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OPERATING

AND SERVICE

MANUAL

TIME INTERVAL

CALIBRATOR

Pa

PACKARD

HEWLETT

HEWLEl'T

PACKARD

OPERATING AND

SERVICE

MANUAL

506-59992A

TIME

INTERVAL

CALIBRATOR

SERIAL PREFIX: 2526A

This manual applies

to

Serial Prefix

25264

unless accompanied

by

a

Manual Change

Sheet indicating

otherwise.

Q

Copyright

HEWLETT-PACKARD COMPANY

1985

5301

STEVENS CREEK BOULEVARD. SANTA

CLARA.

CALIFORNIA 95051

MANUAL PART

NUMBER

59992-91094

Printed OCTOBER

1985

www.

.

CERTIFICATION

HewIm-hckard Company certifies that this

product

met

its

published sFificatiohs at the time of shipment

from the faCtOfy. Hewlett-Padcard further certifies that its calibration measurements are traceable to the

United States National Bureau of Standah, to the extent allowed by the Bureau's calibration facility, and to

the calibration facilities of other International Standards Organization members.

WARRANTY

This Hewlett-Padcard instrument produa

is

warranted against defects in material and workmanship for a

period

of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at

its

option, either repair or replace products which prove to

be

defective.

For

warranty service or repair, this product must

be

returned to

a

service facility designated by HP. Buyer shall

prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However,

Buyer shall pay

all

shipping charges, duties, and taxes for products returned to

HP

from another country.

HP warrants that

its

software and firmware designated by HP for use with an instrument will execute its

programming instructions when properly installed on that instrument. HP

does

not warrant that the

operation of the instrument, or software,

or

firmware will

be

uninterrupted or error free.

LIMITATION

OF

WARRANTY

The

foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by

Buyer, Buyer-supplied software

or

interfacing, unauthorized modification or misuse,operation outsideof the

environmental specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY

IS

EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT

BE

LIABLE FOR ANY DIRECT, INDIRECT,SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER

BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

Product

maintenance agreements and other customer assistance agreements are awilable for Hewlett-

Packard products.

for

any assistance, Contad your nearest Hewlett-hckard Sales and Service Office.

Addresses

are provided at

the back of this manual.

www.

Table

of

Contents

Section I

GENERAL

lNFORMATlON

Page

A

?'RODUCTION

....................................................

1.1

1.

2.

GENERAL DESCRIPTION

...............................................

1

.

1

.

1

.

3

.

SPECIFICATIONS

....................................................

1

2

1

.

4

.

EQUIPMENT SUPPLIED

...............................................

1-2

1

.

5

.

RECOMMENDED

TEST

EQUIPMENT

......................................

1

.

3

Section

2

INSTALLATION

Page

2-

1

.

IN?'RODUCTZON

....................................................

2-1

2-2 PREPARATIONFORUSE

..............................................

2-1

..................................................

2-1 2- 3 Power Requirements

.

-On

.......................................................

2-2

2-

5

.

LOCAL OPERATION/REMOTE OPERATION

.................................

2-2

2-6

.

Setting the HP J06-59992A HP-IB Address

...................................

2-2

2-

7

.

HP-IB Interconnections

................................................

2-3

Section

3

OPERATING INFORMATION

Page

Uc'I'ION

....................................................

3-1

3-LADJUSTMENTS

.....................................................

3-1

3-3

.

OPERATION VERIFICA~ON

............................................

3-1

3-4

.

AUTOMATED CALIBRATION ROUTINE --USING HP 5370AIB COUNTER

.............

3-3

3.5

.

AUTOMATED CALIBRATION ROWTINE ..USING HP

5

363B PROBES

................

3-6

3.6

.

TROUBLESHOOTING HINTS AND GENERAL COMMENTS

........................

3-9

3.7

.

HP-IB PROGRAM LISTINGS

............................................

3-9

Section

4

THEORY

OF

OPERATION

Page

UCTION

....................................................

4-1

4.

2.

TIME

INTERVAL CALIBRATOR

..........................................

4-1

4- 3

.

A

l

VHF

Switch Control Board

...........................................

4-1

4.4

.

A2

VHF

Switch Board

................................................

4-1

.4.

5.

Theory of Operation

..................................................

4-1

4.6

.

HP-IB COMMAND OPERATION

........................................

4-1

4.7

.

INPUT SIGNAL CONVERSION

.........................................

4-2

4.8

.

CALIBRATION WITH AN OFFSET VOLTAGE

...............................

4-3

4.9

.

EXAMPLE OF A NON-ZERO TRIGGER LEVEL MEASUREMENT

.................

4-4

4-

1

0

.

Functional

Block

Diagram Theory

........................................

4-5

4-

1 1

.

HANDSHAKE

LOGIC

..............................................

4-5

4.12

.

BUSLOGIC

.....................................................

4-5

4- 1 3

.

DECODE LOGIC

..................................................

4-5

www

.

h

Table of Contents

4-7

4-

1

4

.

REMOTE/LOCAL LOGIC

4-7

4-

1

5 LOCAL LOCKOUT LOGIC

4-

16

.

RELAY

SELECT

LOGIC

.....................................

4-7

.

....................................

....................................

Section

5

REPLACEABLE PARTS

Page

5-

1

.

INTRODUCTION

...........................................

5-1

5-2

PARTS

ORDERING

..........................................

5-1

5-

3

.

COMPONENT LOCATORS

.......................................

5-9

www

.

h

SAFETY

CONSIDERATIONS

GENERAL

This product and related documentation must be reviewed for familiarization with safety markings and

instructions before operation.

This product is a Safety Class

I

instrument (provided with a protective earth terminal).

BEFORE

APPLYING

POWER

Verify that the product is set to match the available line voltage and the correct fuse is installed. Refer

to Section Il, Installation.

SAFETY EARTH GROUND

An uninterruptible safety earth ground must be provided from the mains power source to the product

input wiring terminals or supplied power cable.

SAFETY SYMBOLS

Instruction manual symbol; the

product will be marked with this

symbol when it is necessary for the

user to refer to the instruction

manual.

Indicates hazardous voltages.

The

WARNING

sign denotes

a

hazard.

It

calls attention to a

procedure, practice, or the like,

which, if not correctly performed or adhered to,

could result in personal injury. Do not proceed

beyond a

WARNING

sign until the indicated con-

ditions are fully understood and met.

The

CAUTION

sign denotes a

hazard. It calls anention to an

operating procedure, practice, or

the like, which,

if

not correctly performed or

adhered to, could result in damage to or destruc-

tion of part or all of the product. Do not proceed

beyond a

CAUTION

sign until the indicated con-

ditions are fully understood and met.

/j7

OR

Indicates

terminal

is

'Onnected

to chassis when such connection

is not apparent.

,,,

Directcurrent.

-

Alternating current.

SAFETY

INFORMATION

Any interruption of the protective grounding conductor

r

inside or outside the instrument1 or discon-

necting the protective earth terminal will cause a potential shock hazard that could result in personal

injury. (Grounding one conductor of a two conductor outlet is not sufficient protection.

I

Whenever it is likely that the protection has been impaired, the instrument must be made inoperative

and be secured against any unintended operation.

If

this instrument is to be energized via an autotransformer (for voltage reduction) make sure the common

terminal is connected to the earthed pole terminal (neutral) of the power source.

Instructions for adjustments while covers are removed and for servicing are for use by service-trained

personnel only. To avoid dangerous electric shock, do not perform such adjustments or servicing unless

qualified to do so.

s) of the same current

For continued protection against fire, replace the line fusels

I

only with

250V

fuse1

rating and type (for example, normal blow, time delay). Do not use repaired fuses or short circuited

fuseholders.

GENERAL

INFORMATION

rn

r;7

4-1. INTRODUCTION

This manual contains operating and sewice information for the

306-

59992A

Time Interval Calibrator. Included is the following.

***

general description of the calibrator

**+

specifications

**

equipment supplied and recommended test equipment

H*

installation information

**

operating information

**

automated procedure for determining calibration constants

**

HP-IB program listings

-

**

theory of operation

**

replaceable

parts

lists

component locators

-*

schematic diagrams

1-2.

GENERAL

DESCRIPTION

The

306-59992A

is a special instrument used to increase the accuracy of

precision time interval measurements. When employed to determine the sys-

tematic errors of a particular measurement set-up, the calibrator can provide

for absolute accuracy

on

the order of

+/-

100

ps

when making time interval

measurements with the Hewlett-Packard

5370A/B

Time Interval Counter.

The calibrator can also

be

used to improve the accuracy of the HP

53630

Time Interval Probes when used in conjunction with the

HP

5370A/B

counter.

The instrument itself

is

a linear, passive device which takes a stable input

pulse and produces two output pulses that are effectively in phase or 180

degrees out

of

phase. This provides two identical and coherent signals to the

input of a measurement instrument such,as

a counter. Any time difference

measured by the counter in

a calibration set-up is a measure of the errors as-

sociated with the measurement channels' electrical

path lengths and the trig-

ger level timing error of the counter.

The resuitant computed "calibration

constant" is then subtracted from the measurements that follow, thereby

removing the effect of systematic enon from the measurement results.

Page

1-1

www.

HP

J06-59992A

Time Interval Calibrator

General Information

1-3.

SPECIFICATIONS

The instrument specifications for the 106- 59992A Time Interval Calibrator

are listed in Table

I

-

1.

Table

1

-

1.

J06-59992A

Specifications.

Bandwidth: 1

MHz

to 200

MHz

square wave; 100 kHz to 200 MHz sine wave.

Input Voltage: SV peak-to-peak,

max.

Effective Edge Repeatability

<

1 0

pg

(error

contributed

by

J06- 59992A)

Insertion

Loss

3dB nominal.

Relay Settling Time:

4

ms nominal.

Output Offset Voltage: Input impedance:

1

Mohm NOMINAL

+/-

10V max

@

high impedance output load.

+/-

2V max

@

50

ohm

output load.

Settling time:

SO

ms NOMINAL.

Voltage Error:

DC

Output Resistance: 0.100 ohm, typical.

+/-

2 mV, max

@

high impedance output load

Power

Requirements: 48-66

Hz, 1

1

5

or 230 VAC,

+

1

0

7,

-

15 % 20 VA maximum.

1-4.

EQUIPMENT SUPPLIED

>

J06- 59992A Time Interval Calibrator

>

AC Power Cord

>

Documentation:

306- 59992A Operating and Service Manual

Product Note 53708-2, "Better Than 100

ps

Accuracy in HP 5370%

Time Interval Measurements Through Bias Error Reduction." HP Pub-

lication #02-5952-7770.

Page

1-2

www.

HP

106-59992A

Time Interval Calibrator

Cenenl

Information

1-5.

RECOMMENDED TEST EQUIPMENT

For

Local

Operation:

>

bc

Pulse Generator

measured.

--

a

ignal source capable of simulating the signal to

>

HP

5370A/B Time Interval Counter

>

Oscilloscope

--

dual channel, general purpose

>

DC

Voltage Source (Optional; used to provide offset voltage when

not using Time Interval Probes)

--

>

HP

5363B Time Interval Robes (Optional)

The procedures to follow to determine calibration constants using

Local Operation are contained in Product Note 5370B-2, "Better

Than

100

ps

Accuracy in Time Interval Measurements

Through Bias Error Reduction.

HP

5

"

3

708

For Remote Opention:

All equipment listed under Local Operation above,

PLUS

>

HP

Series 200 Controller such as

HP

9

8

36, 9 826,9

8

17') or 9 8 16f

>

HP-IB

Interconnection Cables

--

HP

108 3 3A/B/C/D

l

These controlIers require a separate disc drive such as the

HP

9

122

for

microfloppy discs or the

HP

9

125

for 5

3

1/2"

1/4"

floppy discs.

Page

1-3

INSTALLATION

Ma

~1

2-1.

INTRODUCTION

This section presents the information needed to prepare the

HP

J06-59992A

Time Interval Calibrator for use. Information to prepare for remote opera-

tion using

HP-IB

(Hewlett-Packard Interface Bus, HP's ~mplementation of

IEEE

Std.

4

8 8-

19

7

8)

is also included.

2-2.

PREPARATION FOR USE

2-3.

Power

Requirements

The

J06-

59992A Time Interval Calibrator operates from either

1

1

S

or

2

30

volts,

48

to 66

Hz

Before applying power, the voltage selector switch

mounted on

position

the

rear panel of the J06-59992A must

be

set to

the

correct

(1

15

or 230) using a small screwdriver, and the correct fuse must

be

installed.

This instrument uses a

50V

.2A

2

50V time-delay (TD) fuse for

volt operation or a .lA 2 time-delay

(TD)

fuse

for

1

1

5

230

volt operation.

Refer to Table

5-3

in Replaceable Parts for the

HP

Part Numbers of these

fuses.

BEFORE

PLUGGING

LINES,

THIS INSTRUMENT

INTO

THE

AC

be

sure the correct voltage and fuse have been

selected.

POWER

This

is

a

Safety

Class I

product (i.e., provided with

a

protective

earth terminal). An uninterruptible safety earth ground must

be

provided from the Mains power source to the product input

wiring terminals, power cord, or supplied power cord set. When-

ever it is likely that the protection has

been

impaired,

the in-

strument must

be

made inoperative and

be

secured against any

unintended operation. If this instrument is to be energized via an

external autotransformer for voltage reduction, make sure that

the common terminal is connected to the earthed pole of the

power source.

Page

2-1

HP

J06-59992A

Time Interval Calibrator

Installation

2-4. Power-On

The

J06-59992A

is

energized whenever

its

power cord is plugged into the

appropriate power source. The power indicator on the front panel will light.

BEFORE

APPLYING

POWER

TO

THE

INSTRUMENT, the

protective earth terminal of the instrument must

be

connected to

the protective conductor of the (Mains) power cord. The Mains

plug shall only

be

inserted in a socket outlet provided with

a

protective earth contact. The protective action must not

be

negated

by

the

use

of

an

extension

cord

(power cable) without

a

protective conductor (grounding). Grounding one conductor of a

two conductor outlet

is

not sufficient protection

2-5. LOCAL OPERATION/REMOTE OPERATION

The

HP

J06-59992A

Time Interval Calibrator

is

capable of being operated

through an external controller as well as in the local mode. The controller

used for remote operation must have

HP-IB

compatibility.

2-6.

Setting

the

HP

J06-59992A

HP-IB

Address

The

HP J06-59992A

HP-IB

instrument address is

set

with the

DIP

switch,

A2S1, which is accessible through an opening in the rear panel. Set the

IB

HP-

address using switches A1 through

AS

(switches

A6

and

A7

are not used).

Setting the switches

as

shown below will allow proper communication be-

tween the controller and the

106-

59992A according to the programs

provided with this documentation.

SWITCH

: A5

A4

A3

A2

A1

SEITING:

0

0

1

0

1

=

05

Decimal

Equivalent

Allowable

other than

HP-IB

05

address codes are

00

through

30.

If

is

used for the J06- the appropriate lines

a

code

59992A,

of the programs must

be

changed to agree with the different

calibrator address before proceeding. (See line

260

in

"CAL

5

3

7

0'

and

"CAL

5

3

6

3"

programs.

)

Page

2-2

HP

106-59992A

Time

interval

Calibrator

InsZalla tion

The

HP-IB

system allows interconnection

of

up

to

15

(including the controI1-

er)

HP-IB

compatjblc

jnstruments. The

HP-IB

cables have identical

"pig-

gyback'' connectors on both ends so that several cables can

be

connected to

a

single source without special adapters or switch boxer System components

can

be

connected in virtually any configuration desired. There must

be,

of

course,

a path from the controller to every device operating on the bus. Be

sure each connector

is

firmly screwed in place (finger tight) to keep it from

working loose during use.

www.

Page

2-3

-

OPERATING INFORMATION

rn

El

3-1.

INTRODUCTION

This

section presents the information needed to operate the

HP

306- 59992A

Time Interval Calibrator. The calibrator is used together with a high per-

formance time interval counter such as the

HP

5370A/B. The calibrator

helps to determine the errors characteristic of any particular measurement

situation. The measured error data is used in a calculation to arrive at a

number which represents the contribution of the systematic errors. This.

number

is

then subtracted from the measurements that follow, thereby in-

creasing the accuracy of the results by factoring out errors introduced

by

the

elements of the measurement set-up itself.

An important element of the documentation for the

HP

J06-59992A is Product Note 5370B-2, 'Better Than 100 ps

Ac-

curacy in

HP

5370B Time Interval Measurements Through Bias

Error Reduction." This Product Note describes the methods for

manually determining the calibration constants for time interval,

pulse width, and transition time measurement set-ups. It also ex-

plains the reasoning behind the mathematical formulas used to at-

rive at the calibration constants. However, it is not necessary to

fully comprehend the mathematical formulas in order to obtain

the calibration constants using the automated routines referenced

in this section.

3-2.

ADJUSTMENTS

There are no adjustments required for the J06-59992A.

3-3.

OPERATION VERIFICATION

Description:

This verification test checks the basic operation of the

HP

306-59992A Time

Interval Calibrator.

Equipment Required.

>

Pulse Generator

>

DC

Voltage Source

>

Oscilloscope

Page

3-1

HP

306-59992A

Time Interval Calibrator

Operating Information

OSCILLOSCOPE

*

---

r-,iiio1=1

IN

A

,It

1-1

BI

PULSE

GENERATOR

1

I

I

TIME

I

CALIBRATOR

INTERVAL

v

OFFSET VOLTAGE

4

I

L

VOLTAGE,

-

SOURCE

-I

Figwe

3-

I.

Operation Verification

Test

Set

-up.

Procedure:

a

Set the pula generator to produce a square wave, 10

MHz

signal with an

amplitude up to

5

V p-p and a

50%

duty cycle.

b. Connect the pulse generator signal to the J06- 59992A Input. Connect

the Outputs to Channel A and

B

of the oscilloscope. Set coupling for both

oscilloscope inputs to 50-ohm.

e.

Select pushbutton #I on the front panel of the J06-59992A and observe

the output signals with the oscilloscope.

d.

Verify that the signals at outputs A and

B

are 10

with an amplitude of approximately

70% of input, centered at 0. OOV,

MHz

in-phase signals,

and a

5WA

duty cycle. There should

be

no signal breakup or distortion. Note that

the reduced output amplitude is due to the nominal 3dB loss of the

J06- 59992A power-splitters.

e. Select pushbutton #2 and verify that the signals appear the same as in step

d.

f.

Select pushbutton

#3

and verify that the signals are now 180 degrees

out-of -phase.

g.

f.

Select pushbutton

#4

and verify that the signals appear the same as in step

h

Apply a +2V signal from the dc voltage source to the Offset Voltage Input

on the rear panel of the J06-59992A and verify that the signals measured on

.

the oscilloscope are both offset from ground by +2V.

Page

3-2

HP

J06-59992A

Tlme

lnterval Calibrator

Operating

Information

i.

Apply a -2V signal to the Offset Voltage Input

and

observe that the signals

measured on the oscilloscope are both offset from ground by

-2V.

j.

Disconnect the test equipment from the J06-59992A Time ~nterval

Calibrator.

3-4.

AUT OMATEO CALIBRATION ROUTINE --USING

HP 5370A/B

COUNTER

Description:

This routine automatically determines the calibration constants for the

5370A/B counter. In this calibration procedure, known signals from the

-

calibrator are fed into the 5370A/B. Counter readings, which depict

measured errors,

are

represented

as

"calibration constants." The eight con-

stants generated by the program apply to measurements with SEP and COM

counter configurations and with combinations of

"+"

and

"-"

slopes.

The calibration signal duty cycle

is

always at

50%;

however, voltage swing,

mid-pulse voltage offset, transition rate, and pulse rate can

be adjusted

by

user to simulate actual measurement conditions.

Equipment Required:

>

HP

5

3

70AD Time Interval Counter

>

DC

Voltage Source to provide an offset voltage if making

measurements at non-zero trigger levels.

--

> HP Series 200 Controller such

as

HP 9836, 9826, 9

8

17*, 9 8 16*

with BASIC

*Requires separate disc drive

>

HP-IB Cables

>

Pulse Generator--must be capable of generating a signal which:

1.

Simulates the voltage swing XI.

5

and the transition rates

(rise/fall times) of the desired signal to

be

measured.

2.

Has a SWA duty cycle, approximately, but the duty cycle must not

change during the few seconds of calibration.

3. Has a constant rate of at least 1

which to calibrate.

MHZ.

User decides the rate at

Page

3-3

Operating Information

HP

J06-59992A

Time Intewal Calibrator

TIME INTERVAL

CALIBRATOR

Figwe

3-

2.

Calibration Using

the

'CALS

370'

Program.

(1)

The signal swing at this point from the Pulse Generator should

k

1.5

times the desired signal to

k

measured.

(2)

The

signals at this point going from the Time Intewal Calibrator to the

Counter should simulate the actual signal to

k

measured later.

counter, and the controller. Set the HP-IB address of the J06-59992A to 05.

Set the HP-IB address of the counter to

07.

b.

Power up the pulse generator and the instruments connected by the HP-IB

bus.

a.

Connect the HP-IB cables between the 106-599924 the

HP

5370A/B

c

Connect a pair of cables from the J06- 59992A calibrator outputs A and B

to the counter's START and STOP inputs

In order for the calibration to be valid, these same cables must

be

uad for the measurements which follow the calibration routine.

d.

Set counter to SEPARATE, 8et START and STOP channels to

DC,

50 OHM,

DMDE-BY

1

ATTENUATION, and TRIGGER LEVEL to

PRESET.

-

Page

3-4

HP

106-59992A

Time

Interval Calibrator

Operating Information

To

allow an offset voltage limit of

+/-

1 OV, the counter should be

set to 1 Megohm, which means the pulse generator must

be

a good

which also necessitates changing two program

50 ohm source, and the counter should

be

set to Divide-By-10,

lines.

Add an ex-

clamation point in front of line

320,

and remove the exclamation

point from in front of line 330

in

"CAL5 3 70."

e.

Set the pulse generator to produce

a

signal with a 50% duty cycle at a

frequency selected by the user. Adjust amplitude to be 1.5 times that of-the

desired signal.

f.

Connect this signal to the Input of the J06-

59992A.

g.

If using an offset voltage, connect this voltage to the Offset Voltage Input

on the rear panel of the Time Interval Calibrator.

identical to the trigger level voltage of the signal to

This dc voltage should

measured.

be

be

h.

Load the "CAL5

3

70"

calibration routine program into memory of the

controller.

i.

Run the program. The user will need to respond to prompts displayed on

the CRT. This involves entering the offset voltage value used and operating

the SEP/START COM switch on the counter.

j. The display provides a summary of the calibration constants to

be

sub-

tracted from the counter measurements, depending on the type of

measurement to be made. Also included is a list

of

the consistency para-

meters. These provide a measure of the typical experimental error that can

be

expected when using the calibration constants.

Example

of

results:

CALS370

CALIBRAnON CONSTANTS:

(TO BE SUBTRACTED FROM COUNTER READINGS)

TIME INTERVAL

TIME INTERVAL

+

-

TO

-

-

18

ps

TO

+

-73

TIME INTERVAL

+

-

TO

- -

ps

52 ps

TIME INTERVAL TO

-

TO

-

+

-48

ps

WIDTH

+

235

WIDTH TO

ps

RISE -TIME SKEW

+

250

168

ps

ps

FALL-TIME

SKEW

107

ps

CALIBRATED AT 50

MHz

with OFFSET

@

CONSISTENCY:

.

5 VOLTS

TI

++,--:

-1

ps

TI

+-,+-:

WIDTH:

16

2ps

ps

Page

3-5

www.

HP J06-59992A

Time Intewal Calibrator

Operating Information

3-5. AUTOMATED CALIBRATION ROUTINE --USING

HP

53638

PROBES

Page

3-6

Description:

This routine automatically determines the calibration constants for the

HP

5370A/B counter when used with the HP 5 36 38 Time Interval Probes. In

this calibration procedure, known signals from the calibrator are fed into the

5

370A/B. Counter readings, which depict measured errors, are represented

as "calibration constants." The eight constants generated by the program ap-

ply to measurements with SEP and

COM

counter configurations and with

combinations of

"+"

and

"-"

slopes.

The calibration signal duty cycle is always at

5(r/.;

however, voltage swing,

mid-pulse voltage offset, transition rate, and pulse rate can

be

adjusted by

user to simulate actual measurement conditions.

Equipment

Required:

>

HP 5370A/B Time Interval Counter

>

HP

5

363B Time Interval Probes

>

HP Series 200 Controller such as HP 9836,9826,981 7*, 981

'6

with BASIC

*Requires separate disc drive

> HP-IB Cables

>

Pulse Generator--must

be

capable of generating a signal which:

1. Simulates the voltage swing

XI.

5

and the transition rates

(rise/fall times) of the desired signal to

be

measured.

2.

Has a 50% duty cycle, approximately, but the duty cycle must not

change during the few seconds of calibration.

3.

Has a constant rate of at least

1

MHz User decides the rate at

which to calibrate.

HP

106-59992A

Time Interval Calibrator

Operating Information

GENERATOR

Figwe

3-3.

Calibration Using the

'CALS363'

Program.

(1)

The signal swing at this point from the Pulse Generator should

be

1.5

times the desired signal to

be

measured.

(2)

The signals at this point going from the Time Interval Calibrator to the

Counter should simulate the actual signal to

be

measured later.

Procedure:

a. Connect the HP-IB cables between the J06-59992A, the HP 5370A/B

counter, HP 5363B Time Interval Probes, and the Controller. Set the

of the counter to

07.

5

HP-IB

address of the J06- 59992A to 05. Set the HP-IB address of the HP 363B

Time Interval Probes to 04, and the address

b.

Power up the pulse generator and the instruments connected

by

the HP-IB

bus.

c.

Connect a pair of cables from the 53638 Probe outputs to the counter's

START and

STOP

inputs.

In order for the calibration to be valid, these same cables must be

used for the measurements which follow the calibration routine.

d.

The Time Interval Probes should

be

pre-calibrated for trigger-level ac-

curacy as explained

in

the HP 5363B Operating and Service Manual. (Insert

probes into 536

38 and press "Level" witch down for several seconds.)

Page

3-7

HP

J06-59992A

Time

Interval Calibrator

Operating Information

Page

3-8

e. Connect a SO-ohm load and a Time Interval Probe to each of the

306-59992A A and B Outputs using the special tee adapters available with

the Time Interval Probes.

f.

Set counter to SEPARATE, set both START and STOP channels to

DC,

50

OHM, DIVIDE-BY

-

1

ATITNUATION, and

TRIGGER

LEVEL to PRESET.

To allow an offset voltage limit of

+/-

1

OV, the 50 ohm loads at

the Outputs of the J06-59992A should

be

removed. In this case,

the pulse generator must

be

a good 50 ohm source.

g.

Set the pulse generator to produce a signal with a 50% duty cycle at a

frequency selected by the user. Adjust amplitude to be 1.5 times that of the

desired signal.

h.

Connect this signal to the Input of the 306-59992k

i

Connect the Trigger Level Output START voltage from the Time Inter-

val Probes rear panel to the Offset Voltage Input on the rear panel of the

Time Interval Calibrator. This dc voltage, set through the program, should

be

identical to the trigger level voltage of the signal to be measured. The

Time Zero knob can be set to any position, but it must remain at that set-

ting during calibration and the measurements which follow.

When using the 5363B Time Interval Probes to produce the offset

voltage, the trigger level of the counter must be set to 0.00

V.

The program automatically sets the trigger level of the counter to

this value regardless of the Probes trigger level.

j.

Load the "CALS 36

3"

calibration routine program into memory of the

controller.

k.

Run the program. The user will need to respond to a prompt displayed on

the CRT. This involves entering the offset voltage value used.

L

The display provides a summary of the calibration constants to be sub-

tracted from the measurements of the probe/counter combination depend-

ing on the type of measurement to be made. Also included

is

a list of the

consistency parameters. These provide a measure of the typical experimen-

tal error that can

be

expected when using the calibration constants.

www.

HP

306-59992A

Time

Interval Calibrator

Operating Information

Example

of

results:

CAL5363

CALIBRATION CONSTANTS:

(TO BE SUBTRACTED FROM COUNTER READINGS)

74, ps

TIME INTERVAL

+

TO

+

TIME INTERVAL TO

46

ps

224 ps

TIME INTERVAL

+

TO

ps

TIME INTERVAL

TO

+

-86

152

ps

WIDTH

+

TO

WIDTH

TO

+

13

P

RISE-TIME SKEW -142

ps

FALL-TIME

SKEW

-239

p~

CALIBRATED AT

50

MHz with OFFSET

@

1.3 VOLTS

CONSISTENCY:

n

++,--:

23

ps

TI

+-,+-:

-42

ps

WIDTH

:

22

ps

-

-

- -

-

-

-

3-6.

TROUBLESHOOTING HINTS AND GENERAL COMMENTS

A

typical calibration takes about 7 seconds. If the programs should

"hang

up", check for the following:

>

Verify that all electrical connections between test instruments are

correct.

> Verify that all test instruments are set properly.

>

Verify that the instrument

HP-IB

addresses correspond to those in the

HP-

IB programs.

>

Verify that the trigger level is not greater than

+/-

2V

for a 50 ohm

out-

put load.

>

When using a dc voltage source to provide an offset voltage it must agree

with the v01tage level entered

by

the user at the program prompt.

3-7. HP-I6 PROGRAM LISTINGS

Following are the listings of the two programs referenced in this section to

run the automated calibration routines with the

HP

306-59992A

Time

In-

terval Calibrator.

a.

Calibration Routine using

HP

5 370A/B

File TAL 5 3

7

0''

b. Calibration Routine using

HP

53638

Time

Interval Probes

File "CAL 5 3

6

3"

Page

3-9

www.

101 RE-STOREJu~~L5370"1

20

PRINT "CAL5370 REV 12

JUN

85"

-

-

30

1

ORIG

6

DEC 84

40

!

THIS

PROGRAM

EXECUTES

THE

CALIBRATION ALGORITHM DESCRIBED IN D. CHUfS

50

1

PAPER "CALIBRATION OF SYSTEMATIC ERRORS IN PRECISION TIME-INTERVAL

60

1

COUNTERSn, INTERNATIONAL TEST CONFERENCE, PHILADELPHIA,

1985;

70

1

80

1

SET-UP PROCEDURE

90

1

1) CONNECT

A

PULSE SOURCE TO

THE

INPUT OF CALIBRATOR,

3

DB

LARGER

100

1

THAN

THE

DESIRED SIGNAL TO BE

MEASURED AND

APPROXIMATELY THE

SAME RISE/FALL TIMES, -50% DUTY-CYCLE, STABLE 1 TO 100

MHz.

110

1

120

1

2)

CONNECT A PAIR OF CABLES FROM CALIBRATOR OUTPUTS

A

61

B

130

!

TO COUNTER START

&

STOP INPUTS RESPECTIVELY

(NOTE: CABLE MISMATCHES

ARE

INCLUDED IN

THE

CALIBRATION CONSTANTS,

140

!

AND SAME CABLES SHOULD BE USED LATER FOR DOING MEASUREMENTS;

150

1

160

!

ALSO "CABLES" INCLUDE LINEAR, PASSIVE OR ACTIVE PROBES)

170

1

3)

SET COUNTER TO SEPERATE: DC/50 ohms/Xl/PRESET to BOTH CHANNELS

180

1

4) HPIB ADDRESSES: COUNTER-707, CALIBRATOR-705

190

1

5) CONNECT A PRECISE OFFSET VOLTAGE SOURCE TO

T#E

OFFSET INPUT: ENTER

200

!

THE EXACT SAME VALUE WHEN PROMPTED. DEFAULT

IS

0.00 VOLT

210

!

220

1

230

1

INITIALIZATION

240

!

250 Ctr707

!

HPIB

ADDRESSES

260 Cal-705

270 Ps=l.E+12

280 OUTPUT Cal;"BlW

290 OUTPUT CtrtWFN1"

300 INPUT

"Type

in

OFFSET (volts); set counter to mwSEPnu and nwCONTIMTEnwtt

Ofs

310 OUTPUT Ctr;wST6n

!CLEARS

ANY

PREI~IOUS

REFERENCE

(IF

DESIRE;)

320 LevelrOf

s

ITHIS LINE USED WITH

X1

ATTENUATION

!THIS LINE USED WITH

X10

ATTENUATION

330 !LevelrOfs*.l

340 OUTPUT CtrtwFN2TRw

fSET COUNTER TRIGGER LEVEL TO MATCH OFFSET

350 OUTPUT Ctr USING nnnTAMm,;Level

360 OUTPUT Ctr USING mwnTOnw,;Level

370 OUTPUT Ctr

t

**FN4GT2MD2MRw

IMEASURE

FREQUENCY/PERIOD

380 OUTPUT Ctrt nMRvl

390 ENTER CtrtPer !PERIOD/FREQUENCY

400

!

410

1

420 DISP

"

TIME-INTERVAL CALIBRATION

IN

PROGRESS"

430 OUTPUT CtrtwFN1ST1SS3AR2EAOMRn

44 0 OUTPUT Ctr

t

nSRSAISOIMRvg

450 OUTPUT CtrtmMRn

460 Tl=FNTi(Per,Ctr)

!

+ +

DIRECT

470 OUTPUT CtrtnSA2S02MRn

480 OUTPUT Ctr:"MRW

490 TZ=F'NTi (Per, Ctr)

1

DIRECT

500 OUTPUT Cal;wB2w

510 WAIT .004

520 OUTPUT Ctr:wMRa

1

SWAPPED

530 T3=FNTi(Per,Ctr)

540 OUTPUT CtrtwSAISOIMRw

550 OUTPUT CtrtWMRn

!

+

+

SWAPPED

560 T4=FNTi (Per, Ctr)

570 OUTPUT CaltnB3tw

580 WAIT .004

590 OUTPUT Ctr;nSA1S02MRn

600 OUTPUT CtrtwMRn

!

+

DIRECT

610 TS-FNTi (Per, Ctr)

620 OUTPUT CtrtWSA2SOlMRa

I

630 OUTPUT Ctr;"MRn

(Page

3-11)

640 T6=FNTi(Per,Ctr)

I

+

DIRECT

650 OUTPUT Cal;wB4w

660 WAIT .004

- -

-

-

-

-

www.

670 OUTPUT CtrtmMRm

680 T7-FNTf (Per, ctr)

1

+

SWAPPED

690 OUTPUT CtrtWSA1SO2MRm

700 OUTPUT CtrtwMRn

710 ~8=F'NTi(Per,Ctr)

!

+

SWAPPED

END

TIME-INTERVAL CALIBRATION

720

!

730

!

740

!

750 OUTPUT Ctr USING mmmTAwm,;Level*.5 !START COM DIVIDES BY 2

@

50

OHM

760 OUTPUT Ctr USING mmmTOmm,;Level*.5 !START COM DIVIDES BY 2

@

50

OHM

770 DISP %et counter to nmSTART COM1*",

and

mmCONTINUEp*w programn

780 PAUSE

790 DISP WIDTH, RISE/FALL SKEW CALIBRATION IN PROGRESSm

800 !SINCE COUNTER INPUTS

ARE

COMMON, THIS MEANS ONLY THE START-CHANNEL IS

810 lBEING USED FOR MEASUREMENTS.

THE STOP-CHANNEL SERVES ONLY AS A 50-ohm

820 !TERMINATION FOR THE CALIBRATOR B-OUT=

830 !IF NOTHING ELSE IS CHANGED, CALIBRATOR SHOULD BE ON B4

840 OUTPUT Ctr;mAR1SA1S02MRn

850 OUTPUT Ctr: nMRt*

860

ENTER

~trt~4

!

+

WIDTH SWAPPED

870 OUTPUT CtrtwSA2S01MRw

880 OUTPUT CtrtmMR"

890 ENTER Ctr;W3

!

+

WIDTH SWAPPED

900 OUTPUT Cal;B*B3m

910 WAIT .004

920 OUTPUT CtrtmMRm

930 ENTER CtrtW2

!

+

WIDTH DIRECT

940 OUTPUT CtrtnSAlS02MRH

950 OUTPUT Ctr

:

"MR"

960 ENTER CtrtWl

1

+

WIDTH DIRECT

970 OUTPUT CaltWBlm

980 WAIT -004

990 OUTPUT CtrtWAR2SA1SOLMRw

1000 OUTPUT Ctr:nMRH

1010 ENTER CtrtR

!

+

+

RISE TfME SKEW

1020 OUTPUT CtrtmSA2S02MRm

1030 OUTPUT Ctr:mMRw

1040 ENTER CtrtF

!

FALL

TIME SKEW

!

1050

END

WIDTH RISE/FALL SKEW CALIBRATION

10601

10701

1080 OUTPUT Ctr;94DlW

f

RETURN

COUNTER TO CYCLING MODE

logo! BEGIN

CALCULATE

CALIBRATION CONSTANTS

1100 Cpp=.S*(Tl+T4)

1110 Cnn=.5*(T2+T3)

1120 Cpn=.S*(TS+TS)

1130 CnpmO5*(T6+T7)

1140 IF Wl>Per THEN Wl=Wl-Per

:

1150 IF W2>Per THEN W2=W2-Per

1160 IF W3>Per THEN W3=W3-Per

1170

IF

W4>Per THEN W4-W4-Per

1180 Wpn=.S*(Wl+W4-Per)

1190 Wnp=.5*(W2+W3-Per)

1200

!

END CALCULATE CALIBRATION CONSTANTS

1210

!

1220

!

1230

!

BEGIN CALCULATE CONSISTENCY PARAMETERS (Page 3-12)

. .

1240

Pp-.

S* (Tl-T4)

1250 Nn=,S*(T2-T3)

1260

Pnl-.

S*

(TS-TS)

1270 Pn2r05*(T6-T7)

1280

Wpnl=Wl-.5*Per-.25*(Wl-W2+W3-W4)

1290

Wpn2-W4-.5*Per+.25*(Wl-W2+W3-W4)

1300

Wnpl=W2-.5*Per+.25*(Wl-W2+w3-W4)

1310

Wnp2=W3-.5*Per-.25*(Wl-W2+W3+4)

1320

!

END

CALCULATE CONSISTENCY

PARAMETERS

-

-

-

-

-

-

-

-

www.

1330

PRINT

"

CALIBRATION CONSTANTS:"

1340

PRINT

"

(TO

BE

SUBTRACTED FROM COUNTER READINGS)"

1350

PRINT USING

nn"

TIME INTERVAL

+

TO

+

"*, DDDDDD,

""

p~~w*:Cpp*ps

1360

PRINT USING

"nu

TIME INTERVAL TO

,

DDDDDD,

""

psnWn:Cnn*ps

1370

PRINT USING

"""

TIME INTERVAL

+

TO

"",

DDDDDD,

nn

psnWw;Cpn*ps

1380

PRINT USING ""* TIME INTERVAL TO

+

"",

DDDDDD,

nn

psttHn;Cnp*Ps

1390

PRINT USING

nnN

WIDTH

+

TO DDDDDD,

urn

psnW";w pn*Ps

1400

PRINT USING

nwm

WIDTH TO

+

,

DDDDDD,

nw

pswnn;Wnp*Ps

1410

PRINT USING

"""

RISE-TIME

SREW

"*, DDDDDD, psnnn;R*ps

1420

PRINT USING FALL-TIME SKEW

"",

DDDDDD, psnH*;F*Ps

1430

PRINT "CALIBRATED AT n;INT(1.E-6/Per+.S);u

MXZ

with

OFFSET

@

w;Ofs;ff

VOLTS"

1440

PRINT nCONSISTENCY:t@

1450

PRINT wTI

++,--:

niINT(Ps*(Pp-Nn)*.5);npsn

1455

PRINT @@TI

+-,+-:

w;INT(Ps*(Pnl-Pn2)*.5):ttpsm

1460

PRINT nWIDTH

:

w;INT(Ps*(Wpnl-Wpn2)*.5);npsn

1470

!PRINT ttWIDTfl

-+:

n;INT(Ps*(Wnpl-Wnp2)

*.5)

t"psn

1480

DISP ItEND CALIBRATION't

1490

END

1500

1

1510

!

1520

DEF

FNTI

(P,

Ctr)

!RETURNS

T.I.

1530

ENTER Ctr;T

1540

IF ABS(T) <.S*P

THEN

1570

!WITH PROPER PERIOD

COMPLEMENT

1550

OUTPUT Ctr;ttPCMRw

1560

ENTER CtrtT

1570

RETURN

T

1580

FNEND

-

-

-

-

-

-

"",

"""

(Page

3-13)

'

10

1

RE-STORE

"

363"l

20 PRINT

"-

REV

19

JUL

85"

30

!ORIG 11 DEC 84

40

1

THIS PROGRAM EXECUTES

THE

CALIBRATION ALGORITHM DESCRIBED IN D. CHUtS

50

1

PAPER

n~~~~~~~

OF

SYSTEMATIC

ERRORS IN

PRECISION

TIME-INTERVAL

60

1

COUNTERSn, INTERNATIONAL TEST CONFERENCE, PHILA, 1985, WITH HP5363B

70

1

SET-UP PROCEDURE

80

1

1) CONNECT

A

PULSE SOURCE TO THE INPUT OF CALIBRATOR,

3

DB LARGER

90

!

THAN

THE

DESIRED SIGNAL TO BE MEASURED AND APPROXIMATELY THE

100

1

SAME RISE/FALL TIMES, -50% DUTY-CYCLE, STABLE

1

TO 100

MHz.

110

! 2)

CONNECT A PAIR OF CABLES FROM 5363B PROBE OUTPUTS TO

120

1

COUNTER START

&

STOP INPUTS

(NOTE:

THE

SAME CABLES MUST BE USED

LATER

TO

DO

MEASUREMENTS

130

1

140

!

FOR CALIBRATION TO BE VALID)

150

!

3)

PROBES SHOULD BE PRE-CALIBRATED FOR

TRIGGER-LEVEL

ACCURACY

IN ACCORDANCE WITH HP5363B

MANUAL

(INSERT PROBES TO 5363 AND PUSH

160

1

170

1

SWITCH TO "LEVEL" MOMENTARILY)

INSERT PROBES

180

1

4)

TERMINATE CALIBRATOR OUTPUTS A

&

B

WITH

50 oh

AND

A AND B WITH TWO TEE'S; (MUST

HAVE

50 ohm SOURCE IF NO 50 ohm

LOAD)

190

1

200

1

5) SET COUNTER TO SEPERATE; DC/50 ohms/Xl/PRESET to BOTH

CHANNELS

210

1

6)

CONNECT 5363 TRIG LEVEL OUTPUT (A or B) TO CALIBRATOR OFFSET INPUT

220

!

7) HPIB ADDRESSES: COUNTER-707, CALIBRATOR-705, PROBE-704

230

1

240

!

INITIALIZATION

lHPIB ADDRESSES

250 Ctr-707

260 Cal=705

270 Prober704

280 Ps=l.E+12

1

CONSTANT

290 OUTPUT CtrtWFNln

300 INPUT "TYPE IN OFFSET

(-9.99 TO 9.99 volts

@

Hi

2;

-2 TO +2 V

@

50

OHMS)",V

310 OUTPUT Ctr; wST611 !CLEARS

ANY

PREVIOUS REFERENCE

!A TRICK TO GET LEADING 0

320

LevelS=VAL$(1000+INT(ABS(1OO*V)+.S))

330 Le~elS=~+~&Level$[2,4] lTRADE LEADING "1" FOR

H+n

340 IF

V

THEN

Le~elS=~-~&Level$[2,4] lTRADE

n+n

FOR

"-"

350 OUTPUT

P~O~~;~GA~&L~V~~S&~USRB~~&L~V~~$&~US~!SET

TRIG

LEVEL

(2-PROBE CAL)

360 OUTPUT Ctr;

"FN2TRTAO.

OOtg

!SET COUNTER TO SUIT PROBE OUTPUTS

370 OUTPUT Ctr;

380 OUTPUT Ctr;wSRSAISO1w

390 OUTPUT Ctr; "FN4GT2MRn

!

MEASURE FREQUENCY

(

PERIOD)

400 ENTER Ctr:Per

4 10 OUTPUT ~tr

;

wFN1~~1~~3~~2~

!SET COUNTER FOR T.I.

~~~~2MRn

!DUMMY READ TO CLEAR PIPELINE

420 ENTER CtriPfff

430

1

440

!

450 DISP TIME-INTERVAL CALIBRATION IN PROGRESS"

460 OUTPUT

CaltwBln

470 OUTPUT CtrtWMRw

480 Tl=FNTi(Per,Ctr)

!

+ +

SLOPE DIRECT

490 OUTPUT P~O~~;~GADSRBDS~

500 OUTPUT Ctr;"MRn

510 T2-FNTi (Per, Ctr)

1

SLOPE DIRECT

520 OUTPUT Cal;wB2n

530 WAIT -004

540 OUTPUT Ctr;wMRw

550 T3=FNTi(Per,Ctr)

1

SLOPE SWAPPED

560 OUTPUT ProberNGAUSRBUSw

570 OUTPUT Ctr;WRn

580 TQ=FNTi(Per,Ctr)

1

+ +

SLOPE SWAPPED

590 OUTPUT CaltWB3"

600

WAIT

.004

6 10 OUTPUT Probe

t

"GAUSRBDS

620 OUTPUT Ctr; "MRn

630 TS=FNTf(Per,Ctr)

1

+

SLOPE DIRECT (Page 3-14)

640 OUTPVT P~O~~:~GADSF~BUS~

650 OUTPUT CtrtmMRn

660 Tb-FNTi(Per,Ctr)

1

+

SIDPE

DIRECT

-

-

- -

-

-

www.

'

670 OUTPUT CaltnB4n

680 WAIT .004

690 OUTPUT CtrtnMRn

700 ~7=FNTi(Per,Ctr)

!

+

SLOPE SWAPPED

710 OUTPUT Probe;"GAUSRBDSw

720 OUTPUT Ctr;nMRn

730 T8=F~Ti(Per,Ctr)

1

+

SLOPE SWAPPED

END

TIME-INTERVAL

CALIBRATION

740

!

750

!

760

i

770 DISP

WIDTH,

RISE/FALL SKEW CALIBRATION IN PROGRESSn

780 !SINGLE PROBE

MEASUREMENTS

(PROBE-A)

790 !FOR PROBE-B CALIBRATION, REPLACE

A

BY B IN PROBE C0MMAM)S IN THIS

SECTION

800 !FOR EXAMPLEfWGAUSRADSvv IS CHANGED TO "GBUSRBDSn

810 !IF NOTHING ELSE IS CHANGED, CALIBRATOR SHOULD BE ON B4

820 OUTPUT Ctr;"ARlMR"

830 OUTPUT Probe;"GAUSRADSn

840 WAIT .004

!

PROBE-A

CAL

(ONE-PROBE)

850 OUTPUT CtrfnMRn

860 ENTER CtrrW4

1

+

WIOm

SWAPPED

870 OUTPUT ProbetnGADSRAUSw

880 OUTPUT Ctr;vvMRn

890

ENTER

~trt~3

1

+

WIDTX SWAPPED

900 OUTPUT Cal;vtB3w

910 WAIT .004

920 OUTPUT CtrtnMRn

930 ENTER CtrrW2

!

+

WIDTH DIRECT

940 OUTPUT ProbetWGAUSRADSw

950 OUTPUT Ctr

;

"MRtv

960 ENTER Ctr;Wl

!

+

WIDTH DIRECT

970 OUTPUT Cal tffBln

980 WAIT .004

990

OUTPUT

ctrtNm~mW

1000 OUTPUT Probe;"GAUSRAUSW

1010 OUTPUT Ctr; vfMRgv

1020 R=FNTi(Per,Ctr)

!

+

+

PROBE-A (RISE)

1030 OUTPUT P~O~~;~GADSRADS~

1040 OUTPUT Ctr:vtKRw

1050 F=FNTi(Per,Ctr)

!

PROBE-A (FAU)

10601 END WIDTH RISE/FAU CALIBRATION

1070!

1080!

1090 OUTPUT ProbetwGAUSRBUSn

IBACX TO 2-PROBES TO

TIIERMO

EQUILIZE

1100 OUTPUT Ctr;IvMDln

fRETURN

COUNTER TO CYCLING

MODE

11101

1120

!

BEGIN CALCULATE CALIBRATION CONSTANTS

1130 Cpp=.S*(Tl+T4)

1140 Cnn-.5*(T2+T3)

1150 Cpn=.S*(TS+T8)

1160 Cnp-.

5*

(T6+T7)

1170 IF Wl>Per

THEN

Wl=Wl-Per

1180 IF W2>Per THEN W2=W2-Per

1190 IF W3>Per THEN W3=W3-Per

1200

IF

W4,Per THEN W4-W4-Per

1210 Wpn=.S*(Wl+W4-Per)

1220 Wnp=.

S*

(W2+W3-Per)

1230

1

END

CALCULATE

CALIBRATION CONSTANTS

1240

!

1250

!

1260

1

BEGIN CALCVLATE CONSISTENCY PARAMETERS

(Page

3-15)

1270

Pp.

S*

(Tl-T4)

1280 Nn=.S*(TZ-T3)

1290 Pnl=.S*(TS-T8)

1300 Pn2=.5*(T6-T7)

1310

Wpnl=W1-.5*Per-.25*(Wl-W2+w3-W4)

1320

Wpn2=W4-.5*Per+.25*(Wl-w2+W3-W4)

-

-

-

-

-

-

- -

1330

Wnpl=W2-.5*Per+.25*(Wl-W2+W3-W4)

1340

Wnp2=W3-.5*Per-.25*(Wl-W2+W3-W4)

1350

!

END

CALCULATE

CONSISTENCY PARAMETERS

1360

!

1370

!

1380

!

1390 PRINT

w

CALIBRATION CONSTANTS:w

1400 PRINT

"

(TO BE SUBTRACTED FROM COUNTER READINGS)"

1410 Ps=l.E+12

1420 PRINT USING

"""

TIME INTERVAL

+

TO

+

"",

DDDDDD, psnww;Cpp*Ps

1430 PRINT USING

www

TIME INTERVAL TO

"",

DDDDDD,

uw

psnww;Cnn*Ps

1440 PRINT USING

wwn

TIME INTERVAL

+

TO

"",

DDDDDD,

nw

pswwn;Cpn*Ps

1450 PRINT USING

www

TIME INTERVAL TO

+

"",

DDDDDD, psnww;Cnp*Ps

1460 PRINT USING

www

PROBE-A WIDTH

+

TO

,

DDDDDD,

ww

psnwn;Wpn*Ps

1470 PRINT USING

www

PROBE-A WIDTH TO

+

,

DDDDDD,

ww

psnww;Wnp*Ps

1480 PRINT USING

"""

PROBE-A RISE-TIME

SKEW

"",

DDDDDD,

""

psnnw;R*Ps

1490 PRINT USING

"""

PROBE-A FALL-TIME SKEW

"",

DDDDDD,

ww

psW*'";F*Ps

1500 FreqrINT(1.E-6/Per+.5)

1510 PRINT "CALIBRATION PERFORMED AT ";Freq;"

MHz

@

OFFSET

=

w;V;w voltsw

1520 PRINT nCONSISTENCY:f*

1530 PRINT "TI

++,

--:

f';INT( (Pp-Nn)

*.

~*Ps+. 5)

;

"PS"

1540 PRINT **TI

+-,-+:

*';INT((Pnl-Pn2)*.5*Ps+.5)

;@'psW

1550 PRINT wWIDTH

:

w;INT((Wpnl-Wpn2)*Ps*.5+.5);"ps"

1560

1

"WIDTH

-+:

";

INT(

(Wnpl-Wnp2)

*.

5*Ps+.

5)

;

wpslf

1570 PRINT

'@"

1580 DISP "END CALIBRATIONff

1590 END

1600

!

1610

!

1620 DEF FNTi() !RETURNS

T.I.

1630

ENTER

ctr;T

1640 IF ABS (T)<.S*P

THEN

1670

!WITH PROPER PERIOD COMPLEMENT

16 50 OUTPUT Ctr

:

"PCMRf9

1660 ENTER CtrtT

1670

RETURN T

1680 FNEND

- -

-

-

-

-

(Page

3-16)

www.

THEORY

OF

OPERATION

4-1. INTRODUCTION

This section explains the basic operation of the

HP

J06-59992A

Time Inter-

val Calibrator.

4-2. TIME INTERVAL CALIBRATOR

4-3. A1

VHF

Switch Control Board

The majority of the components on the A1 board make possible the

operation of the Time Interval Calibrator. In addition, the board contains

HP-IB

the Power Supply, which provides +I

-12V, and

Logic to drive the Switch Board.

2V,

+SV,

and the Relay SeIect

A2

4-4. A2

VHF

Switch

Board

This

board contains offset voltage circuitry, the relays, the two power-

splitters, and the

HP-IB

address switch.

4-5. Theory of Operatlon

4-6.

HP-16

COMMAND OPERATlON

The Hewlett-Packard Time Interval Calibrator can

be

operated either

manually or remotely using

commands. The commands

"B

1'B311, and

"B4"

correspond to the front panel switches

HP-IB

I",

"82",

#

1,

#2,#3,

and

64,

respectively.

Page

4-1.

Theory

of

Operation

HP

J06-59992A

Time Interval Calibrator

B1

INPUT

B2

1-1

OUTPUT A

'

SPLITTER P2

Zero

OUTPUT B

OUTPUT

A

OUTPUT B

OUTPUT

A

OUTPUT B

OUTPUT

A

OUTPUT

B

In-phase

B3

INPUT

B4

171

180

eg

SPLITTER P2

In-phase/Swap

SPLITTER N2

Out-of-phase

Out-of-phase/Swap

Figure

4-1. HP-1B

Command

Swnmary.

4-7.

INPUT

SIGNAL CONVERSION

The zero degree power-splitter divides the input signal into two nearly in-

phase output signals, PI and P2 Command "Bl" routes the input signal from

Pl to Output

A

and P2 to Output B;

'732"

routes the input from P1 to Output

B

and P2 to Output

A

Similarly, the 180-degree power-splitter divides the

input into two nearly out-of -phase signals, N 1 and

N2.

Command

"B3"

routes the input signal from N

1

to Output A and N2 to Output

8;

'%4"

routes

the input from

N

1

to Output

B

and N2 to Output

A

Refer to Figure 4- 1

for a diagram illustrating the effect of the HP-IB commands.

The commands "Bl

-B4", (or switches 1-4 if

manually

operated), result in four

binary states defined by the two bits arriving on AD4 pin

4 and pin

6.

The

bit from pin

4,

via buffers in A2U 1 energizes the appropriate relays A2K

1

and A2K2, routing the incoming signal from A2J1 to the desired power-

splitter. The outputs of the selected splitter

are

fed to A2K3 where they are

and B directly, or reversed through

a

cross-over K3

connected to Outputs

A

relay arrangement. Note that the input signal to the splitters and the output

signals from the splitters are ac-coupled via blocking capacitors A2C 1, C8,

and C9. Table

4-

1 summarizes the J06-59992A operation.

Page

4-2

www.

HP

J06-5999tA

Time Interval Calibrator

.Theory of Operation

Table

4-1.

Relay

and

Swifch

Operation

of

HP J06-59992A.

Switch

HP-IB

(man) (remote)

1

Splitter

54

54

pin

4 pin

6

used

..................................................................

..................................................................

B

1

82

Kt

K2

K3

Output

Output

A

B

coila

H

H

L

H

H

L

2

3

4

83

84

L

L

T2

T2

T

1

T

1

OFF OFF

ON

OFF

OFF OFF

ON

ON

ON

ON

OFF

ON

PI

P2

Nf

N

2

.

P2

P

1

N2

N

1

4-8.

CALIBRATION WITH AN

OFFSET

VOLTAGE

When time interval calibration is to be done at a particular trigger level volt-

age, the calibrator

A

and

B

output signals must

be

biased to the same voltage

to simulate the signal to

be

measured.

This is accomplished by applying a

voltage equal to the desired trigger-level to connector

A2J3

on

the

rear panel

of the

J06-59992A.

A

feedback circuit made up of operational amplifiers

(A2U3

and

U4)

and

current sources

(A2U2

and

US)

make it possible to bias both the

A

and

B

calibrator outputs to match a dc voltage appearing at the Offset Voltage In-

put,

AZ13. This

"offset" voltage appears on the

"+"

input of operational

amplifier

A2U3.

The

"-"

input of

U3

senses the dc voltage of the applied

bias voltage signal on the output side of blocking capacitor C8, via

R

1 3. The

difference voltage is amplified, filtered, and controls the cumnt sources

A2U2A

and

U2B

with outputs on pins

1

and 7. The feedback loop es-

tablishes the output voltage at C8 to

be

equal to the input offset voltage.

A

maximum of

40

mA

can be sourced by

A2U2B

or sunk

by

U2A

before

saturation. Similarly, voltage at C9 is sensed by

R

14 and fed back to

A2U4.

Current sources

USC

and

USD

ensure the voltage at C9 will

be

equal to the

input offset voltage. Through relay K3, voltages at C8 and

C9

are connected

to outputs

A

and

B.

With this arrangement, Outputs

A

and

B

can

be

biased up to

+/-

2

volts for

SO-ohm

loads

or

+/-

10 volts for high impedance loads. In the absence of

any input offset voltage,

A2R7

establishes the "input" voltage

as

ground, and

no bias will appear at the outputs.

Page

4-3

HP

106-59992A

Time Interval Calibrator

Theory of Operation

4-9.

EXAMPLE OF A NON-ZERO TRIGGER LEVEL MEASUREMENT

Signal to

be

measured:

10 MHz, 1. OV pulses with mid-pulse at 0. SV.

Signal from the pulse generator: 10

MHz,

1.5V square wave

Signal from the time interval calibrator: 10 MHz, 1. OV square wave, with a

0. SV offset and an approximate

S0'A

duty cycle.

Source of Offset Voltage:

370A/B COUNTER AND THE HP 5 36 38 TIME INTERVAL

FOR THE HP 5

PROBES COMBINATION

Trigger Level Output and connect it to the Offset Voltage Input of the

J06- S9992A (user response to software prompt sets the voltage level from the

probes). The 5370A/B trigger level is set to 0. OOV.

5363B

Time Interval Probes--Take the 0.5V from the rear panel START

FOR

THE

HP 5370A/B COUNTER WITHOUT

THE

TIME INTERVAL

PROBES

DC

Voltage Source--Connect 0.

SV

from the dc voltage source to the Offset

Voltage Input of the J06-S9992A.

Set the S370A/B to a 0. SOV trigger level

for both the START

and

STOP channels (user response to software prompt

sets

the trigger level).

Page

4-4

HP

106-59992A

Time Interval Calibrator

Theory of Operation

4-10.

Functional Block Diagram Theory

Figure

Time Interval Calibrator. The J06-59992A consists of

4-2 illustrates the functional block diagram for the HP J06-59992A

six

mapr circuit

groups: Handshake Logic, Bus Logic, Decode Logic, Remote/Local Logic, Local

Lockout Logic, and Relay Select Logic.

4-11. HANDSHAKE

LOGIC

The three-wire handshake lines to the Handshake Logic circuits synchronize

the operation of the J06- 59992A. The lines are: Ready for Data (RFD),

Data

Valid (DAV),

and Data Accepted (DAC). The handshake logic processes the

DAV signal and produces the Handshake Out (HSOUT) signal for use by the

Bus Logic and the Local Lockout Logic. The DAV signal and the Handshake

'

Enable (HSENABLE) signal combine to output the RFD and DAC signals on

the bus. The basic purposes of this logic is to signal the other J06-59992A

circuits that the Data Input/Output (Dl01 lines contain a character for pos-

sible processing and to interface the circuits to the HP Interface Bus three-

wire handshake system.

4-12.

BUS

LOGIC

The Bus Logic accepts inputs from the DIO lines and the Multiple Response

Enable

(MRE)

signal from the Interface Bus.

with the HSOUT signal, enable the Remote/Local Logic and the Local

These inputs, in conjunction

Loc-

kout Logic. In addition, the Bus Logic processes the relay state codes and

relay select codes present on the DIO lines, and combines them with the

HSOUT and REMOTE signals to output the CLK and CLK signals to the

Decode Logic.

The Bus Logic serves the additional function, in conjunction with the

Remote/Local Logic, of placing the J06-59992A into remote operation or

taking it out of remote operation on command from instructions on the In-

terface Bus

4-13. DECODE LOGIC

The Decode Logic receives the CLK and CLK signals from the Bus Logic and

receives relay select codes and relay state codes from the DIO lines. These

signals are decoded and output to the Relay Select Logic to select switch

B

and to connect switch B to one of two power-splitters and a switch-over

relay. The

CLK

B

signal selects switch B, BIT1 selects power-splitter A2T1

or T2, and BIT2 selects the straight-through or cross-over path through relay

A2K3.

Page

4-5

-

*5v

LOCAL RESET SWITCH

F---

REMOTEILOCAL LOGIC "REMOTE"

I

REN

B

L

0101-7

7

-

,

E

LOCAL

LOCKOUT

W

.

-#&

t-

t

(C

*

7

',

CONTROL LINES

BIT 1

TO RELAYS

BIT 2

RELAY

-

DECODE

'

SELECT

LOGIC

.)

LOGIC

CLKB

CONTROL LINES

TO INDICATORS

B

DAV

-

RFD

-

-

HSENABLE

FRONT PANEL PUSHBUTTON

DAC

t--

-

HANDSHAKE

HSOUT

LOGIC

-

BUS

SWITCHES

LOGIC

MRE

e

4

BCL

ADDRESS SWITCHES

/I

1

L

I

HP

306-59992A

Time

Interval Calibrator

Theory of Operation

4-14. REMOTE/LOCAL LOGIC

The Remote/Local Logic receives the Remote Enable (REN) signal from the

Interface Bus along with the ENABLE and ADDR signals from the Bus Logic

to produce the REMOTE signal. This action put. the J06-59992A in remote

operation When the REMOTE signal

is

removed (by closing the

LOCAL/RESET switch or setting REN high) the J06-59992A is taken out of

remote operation. The LOCAL/RESET switch is disabled and cannot take

the J06-59992A out of remote operation when the Local Lockout (LLO)

sig-

nal is received from the Local Lockout Logic.

When the

REMOTE

indicator

is

illuminated, the J06- 5 99 92A

front-panel pushbutton switches are disabled. This indicator does

not imply that the switches are presently being changed remotely.

This indicator may

be

illuminated even though the J06-

5

9 9 9 2A

is not listening to the bus, e.g., the J06-59992A automatically

unaddresses itself whenever

the DIO lines is not its own listen address code.

MRE

is low and the code present on

4-15. LOCAL LOCKOUT LOGIC

The Local Lockout Logic locks the J06- 59992A in remote operation by disa-

bling the LOCAL/RESET switch with the LLO signal. The function of this

logic

Bus

is

to hold the J06-59992A in remote until the REN signal on the Inter-

face

is high to return it to local operation The logic monitors the DIO

lina for the ASCII character

and HSOUT signals to produce LLO. LLO

DC

1

which is processed along with the MRE

is

cleared by the CLR signal from

the Remote/Local Logic. The Local Lockout Logic will lock the

J06-59992A in remote operation only when the unit is already in remote. If

the J06-59992A is not in remote, this logic will have no effect on the opera-

tion or programming.

4-16. RELAY SELECT LOGIC

The Relay Select Logic controls the state of the

B

switches. The state is

determined

by

which of the power-splitters is connected through which path

of the cross-over relay to output connectors A and

B.

Control is ac-

complished by signals from the Decode Logic (in remote) or by front panel

pushbutton switches (in local). For remote control the REMOTE signal must

be

high and for local control the REMOTE signal must

be

low.

Page

4-7

REPLACEABLE PARTS

.

m

El

5-1.

INTRODUCTION

This section contains a listing of the replaceable

parts

for the

J06-

59992A

Time Interval Calibrator. The parts lists are followed by the component

locators for the

A

1

and

A2

board assemblies. The parts lists are organized as

follows

>

Table

5-1

>

Table

5-2

--

A

1 Board Assembly Replaceable Parts

--

A2

Board Assembly Replaceable Parts

>

Table

5-3

--

Chassis and Miscellaneous Parts

>

Table

5-4

--

Cabinet Parts

The format for the parts lists

is

as follows:

>

Reference Designation helps identify a specific part

using the component locators in this section.

>

HP

Part

Number

identifies a part according to the

Hewlett-Packard part inventory system.

>

Qty specifies the quantity of a particular part used in

the instrument.

>

Description

information.

--

--

--

--

a

short summary of the relevant part

5-2.

PARTS ORDERING

To order a part listed in the replaceable parts tables, quote the Hewlett-

Packard part number, indicate the quantity required, and address the order to

the nearest Hewlett

-Packard office.

Page

5-1

HP

106-59992A

Time Interval Calibrator

Replaceable Parts

Table

5-1.

A1 Replaceable

Parts.

Reference

HP

Part

Designation Number

Q~Y

Description

A1

59992-60001

1

VHF SWITCH CONTROL BOARD ASSEMBLY

AlCl

0180-2101

1

CAP-FXD 4000UF +75- 1

0% 1 SVDC AL

A1C2

01 80-1701

1

CAP-FXD 6.8UF +-2UA 6VDC TA

A1C3

0180-2382

2

CAP-FXD 150OUF +75-1

A 1C4

0140-01 49

1

+-

(r/.

3OVDC AL

CAP-FXD 470PF

5%

300VDC MICA

A1CS

0160-4084

2

CAP-FXD .1UF +-20% SOVDC CER

A1C6

01 80-2382

CAP-FXD 1

SOOUF +7 5-

1

0%

30VDC AL

A1C7

01 40-01 92

2

CAP-FXD 68PF +-5% 300VDC MICA

A1C8

0140-0192

CAP-FXD 68PF +-5% 300VDC MICA

A1C9

0160-3879

4

CAP-FXD

.

0

1

UF

+-20% 1 00VDC CER

AlClO

0160-3879

CAP-FXD

.

0 1UF +-20% 100VDC CER

AlCll

0160-3879

CAP-FXD

OlUF +-2UA 100VDC CER

AlC12

0160-3879

CAP-FXD

.

.OI

UF +-20% 1 OOVDC CER

AlC13

0160-4084

CAP-FXD .1UF

+-20%

SOVDC CER

A1C14

0180-1735

1

CAP-FXD .22UF

+-

1

(TX

3 5VDC TA

AlCRl

1901-0040

1

DIODE-SWITCHING 30V SOMA 2NS DO- 3

5

AlCR2

1901 -0029

6

DIODE-POWER RECT 600V 750MA DO-29

A1CR3

190 1-0029

DIODE-POWER

RECT

600V 75OMA DO-29

AICR4

1901-0029

DIODE-POWER RECT 600V 750MA DO-29

AICRS

1901-0029

DIODE-POWER RECT 600V 750MA DO-29

AlCR6

190 1-0029

DIODE-POWER RECT 600V 7SOMA DO-29

AlCR7

190 1-0029

DIODE-POWER RECT 600V 75OMA DO-29

AlDSl

21 40-0043

2

LAMP-INCAND 17 30 6VDC 40MA T- 1

AIDS2

2140-0043

-

-3/4-BULB

3/4-BULB

LAMP-INCAND 1730 6VDC 40MA T- 1

AlDS3-

AIDS6

NOT ASSIGNED

AIDS7

2140-031

1

4

LAMP-INCAND 7

3 33 SVDC 60MA T- 1

AIDS8

21 40-03 1 1

-

3/4-BULB

LAMP-INCAND 73 33 SVDC 60MA T- 1 -3/4-BULB

AIDS9

2140-031 1

LAMP-INCAND 73 33 SVDC 60MA T- 1

AIDS10

2140-031 1

-

-

3/4-BULB

LAMP-INCAND 7 3 3 3 SVDC 60MA T- 1 3/4-BULB

AlJl 1251-3283

1

CONNECTOR 24-PIN FEM MICRO-RIBBON

A112

1200-0473

1

SOCKET-IC 1 6-CONT DIP-SLDR

AlQl

1854-007 1

1

TRANSISTOR NPN SI PD=300MW FT-200MHZ

AIR1

1810-0136

2

NETWORK-RESISTOR

1

0-SIP MULTI-VALUE

AIR2

1810-0136

NETWORK-RESISTOR I

AIR3

1810-0041

NETWORK-RESISTOR 9-SIP Z7K OHM

0-SIP MULTI -VALUE

1

X 8

AIR4

0683-2725 1

RESISTOR 2.7K

5%

.2 SW

AIRS

068.3-1215 3

RESISTOR 1 20 5% .25W

Page

5-2

HP

106-59992A

Time Interval Calibrator

Replaceable Parts

Table 5- 1. A 1 Replaceable Parts. (Continued)

Reference

Designation

AIR6

AIR7

AIR8

AIR9

AlRlO

AlRl 1

AlRlZ

AIR13

AIR14

AIR15

AIR16

AlSlA

AlSlB

AlTl

AlTPl

A lTP2

AITP3

AlTP4

AlUl

AlU2

A1U3

A1U4

AlUS

A1U6

A1U7

A1U8

A1U9

AlUlO

AlUll

AlUl2

AlU13

AlU14

AlUlS

AlU16

AlU17

AlU18

AlU19

AlU20

AlU21

AlU22

A1U23

AlU24

HP

Part

Number

0683-1215

0683-2035

0683-2035

0683-2035

0683-5125

0683-2035

0683-1025

0683-1025

0683-1025

181 0-0055

0683-1215

3101-0572

91

00-4485

0360-0124

0360-01 24

0360-01 24

0360-0124

1 820- 1207

1820-1 197

1820-1416

1 820-0904

1820-1415

1820-1 197

1820-1416

1820- 1202

1820- 1202

1820-0515

1820-1112

1820- 1209

1820-1416

1820-1112

1820-1 197

1820-1112

1820-0621

1820-1 197

1820-1 159

1

820- 1204

1820-121

1

Qty

Description

20

5%

.2 SW

RESISTOR 1

RESISTOR 20K

S%

.25W

RESISTOR 2OK 5% .2 SW

RESISTOR 20K 5%. 25W

RESISTOR 5.1 K

5%

.2 %'5

RESISTOR 2OK

5%

.2 SW

RESISTOR 1 K 5% .25W

RESISTOR 1K 5% .2SW

RESISTOR 1K 5%

.

25W

NETWORK-RESISTOR 9-SIP 10. OK OHM

X

8

RBISTOR 120

5%

.25W

NOT ASSIGNED

SWITCH-PB 4 STATION 15.88MM C-C SPACING

TRANSFORMER-POWER 1 1

5

/230V 4 8- 66HZ

CONNECTOR-SGL CONT-PIN .04-IN-BSC-SZ

CONNECTOR-SGL CONT-PIN .04-IN-BSC-SZ

CONNECTOR-SGL CONT-PIN .O4-IN-BSC-SZ

CONNECTOR-SGL CONT-PIN .04-IN-BSC-SZ

RD

RD

RD

RD

4

1

3

1

1

1

4

1

4

3

1

1

1

2

1

3

1

LS

NAND 8-INP *+SN74LS30N

IC

TTL

IC

TTL

LS

NAND QUAD 2-INP **SN74LSOON

IC

TTL

LS

INV

HEX

1

-1NP SN7 4LS 1 4N

IC COMPTR

TIZ

L MAGTD S -BIT ** 9 3L24PC

IC TTL

LS

NAND DUAL 4-INP *SN74LS13N

IC TTL

LS

NAND QUAD 2-INP +*SN74LSOON

IC

TTL

LS

INV HEX 1 -1NP

*

*SN7 4LS 1 4N

LS

NAND

TPL

3 -1NP **SN 7 4LS 1 ON

IC

TTL

IC TTL

LS

NAND TPL 3-INP "SN74L.S 1 ON

IC MV TTL RETRIG/RESET DUAL **MC8602P

IC

TTL

LS

D-TYPE POS-EDGE **SN74LS74AN

IC

BFR

TTL

LS

NAND QUAD 2-INPtSN74LS38N

IC

TTL

LS

INV HEX 1 -1NP

*%N

7 4LS 1 4N

IC

TTL

LS

D-TYPE POS-EDGE **SN74LS74AN

NOT USED

NOT USED

IC

TTL

LS

NAND QUAD 2-INP *+SN74LSOON

IC

TTL

LS

D-TYPE POS-EDGE USN74LS74AN

IC

BFR

TTL

NAND QUAD 2-INP nSN74 3 8N

NOT USED

IC TTL LS NAND QUAD 2-INP *+SN74LSOON

IC INV ITL

LS

HEX **SN74LS04N

IC TTL

LS

NAND DUAL 4-INP *+SN74LS20N

IC TTL LS EXCL-OR QUAD 2-INP**SN74LS86N

Page 5-3

1

1

1

HP

306-59992A

Time Interval Calibrator

Replaceable Parts

Table 5- 1. A 1 Replaceable

Parts.

(Continued)

Reference HP

Designation

Number

Part

QtY

Description

A1U25 1826-0099 1

IC

V RGLTR-FXD-POS I ZV TO-220 -7

8

1Z UC

AlU26

1826-01 22

1

IC

A1U27 1826-0221 1

IC

V RGLTR-FXD-POS SV TO-220 *7805UC

V RGLTR-FXD-NEG 12V TO-220 **79 1 12 CT

MISCELLANEOUS

A

1

PARTS

MP1

59307-00006

1

BKT-ANNUN

MP2

05330-40002

1

BLOCK ANNUN

0380-0906

6

STANDOFF-RVT-ON

1205-0349

3

SINK

.

I

-IN-LG

6-

3

2-THD

HEAT

SGL PLSTC-PWR-CS

EP

106-59992A

Time Interval Calibrator

Replaceable Parts

Table

5-2.

A2

Replaceable Parts.

Reference

Designation

A2

AZC 1

AZCZ

A2C3

A2C4

A2C5

A2C6

A2C7

A2C8

A2C9

AX10

A2Cll

A2C 1 2

A2C13

A2C14

A2C15

A2C16

A2C17

A2C 1 8

A2C19

AX20

AZCZ 1

AZC22

A2CRl

A2CR2

A2CR3

AD 1

A2J2

A2J3

A2J4

A2J 5

A2J6

AZK

1

A2K2

A2K3

AZR 1

A2R2

A2R3

A2R4

A2RS

HP

Part

Number

59992-60002

01

60-4535

0160-3875

0160-3875

01 60-4557

0160-3875

0160-3875

01 60-4557

01 60-4535

0160-4535

0160-4389

01 60-4389

0160-4389

0160-4389

0180-0210

01 80-0210

0180-2818

01 80-281 8

01 80-281 8

01 80-281 8

01 80-0210

0160-3875

0160-3875

1901-0050

1901 -0050

190 1-0050

1250-1453

1200-0638

1250-1453

1200-0473

1250-1453

1250-1 453

0490- 1507

0490-0508

0490-0508

0757-0458

0698-3153

0698-31 53

0698-3153

0757-0458

Qty

Description

VHF SWITCH BOARD ASSEMBLY

1

3

6

2

OX

SOVDC CER

CAP-FXD 1 UF

+-

1

CAP-FXD 22PF +-5% 2OOVDC CER

CAP-FXD 22PF

+-

5% 2OOVDC CER

CAP-FXD

.

lUF +-20% AXIAL CER

*

CAP-FXD 22PF

+-

5% 2OOVDC CER

CAP-FXD

22PF +-5% 2OOVDC CER

CAP-FXD .1UF +-20% AXIAL CER

CAP-FXD

1

UF

+-

1

0;A

SOVDC CER

UF

+-

1 0"A SOVDC CER

CAP-FXD

1

CAP-FXD 100PF +-30% RADIAL CER

CAP-FXD 100PF

+-

3VA RADIAL CER

CAP-FXD 100PF +-30% RADIAL CER

00% RADIAL CER

CAP-FXD

1 00PF

+-

3

CAP-FXD 3.3UF +-20%

I

SVDC TA

CAP-FXD 3.3UF +-20% 1

SVDC TA

CAP-FXD 2.2UF +-20% 3 SVDC TA

CAP-FXD 2.2UF +-20% 35VDC TA

CAP-FXD 2.2UF +-20% 3

5VDC TA

CAP-FXD 2.2UF +-20% 3

SVDC TA

CAP-FXD 3.3UF +-20"A 1

SVDC TA

CAP-FXD 22PF

+-

5%

2OOVDC CER

CAP-FXD 22PF +-5% 2OOVDC CER

4

3

4

3

DIODE SI GP 30V SOMA

DIODE SI GP 30V SOMA

DIODE SI GP 30V SOMA

CONNECTOR-RF BNC FEM PC SO-OHM

SOCKET-IC 1 4-PIN DIP

CONNECTOR-RF BNC

FEM

PC SO-OHM

SOCKET-IC 1 6-PIN-DIP

CONNECTOR-RF

BNC

FEM

PC

SO-OHM

CONNECTOR-RF BNC FEM PC SO-OHM

4

1

1

1

2

2

6

RF RELAY OMRON 1

2V *GSY 15 4 PDC

1

2

RELAY 2C 1 2VDC-COIL

.

SA 2 8VDC DPDT

2VDC-COIL

.

SA 2 8VDC DPDT

RELAY 2C 1

RESISTOR 51.1K

1%.

125

%

.12 5W

RESISTOR 3.8 3K 1

RESISTOR 3.83K 1

%

.

12 SW

RESISTOR 3.83K

1%.

l25W

RESISTOR 51.1K

1%.

125W

Page

5-5

-

HP

306-59992A

Time

Interval Calibrator

Replaceable Parts

-

2. A 2 Replaceable Parts. (Continued)

Table 5

HP

Part

Number

Description

RESISTOR 1

OK

1

%

.12 SW

RESISTOR 1M 1%. 125W

RESISTOR

3

83K 1%. 125W

OK

1

%

.

I

25

W

RESISTOR 1

RESISTOR 3.8

3K

1%. 125W

RESISTOR 21 5 1%. 125W

125W

RESISTOR 215

1%.

RESISTOR

1 OK 1

%

.125W

RESISTOR

1

OK 1

%

.I25 W

125W

RESISTOR

3.8 3K 1%.

SWITCH SL 7- 1 A DIP

.

I

A

180 DEG POW DIV

2

WY

PC

MINI

PSCJ-2- 1

0 DEG POW DIV 2 WY

PC

MINI

PSC-

2-

I

IC BUF TTL NON-INV

HEX

*+SN74 1 7N

TRANSISTOR ARRAY DUAL PNP NPN *MPQ6700

OP AMP LOW-BIAS-H-IMPD 8-DIP-P PKG'LF411

OP AMP LOW-BIAS-H-IMPD 8-DIP-P PKG'LF41 1

TRANSISTOR ARRAY DUAL PNP NPN +*MPQ6700

MISCELLANEOUS A2 PARTS

STANDOFF-RVT-ON

.

5-IN-LG 6-32

THD

I

Page

5-6

HP

106-S9992A

Time

Interval Calibrator

Replaceable

Parts

Table 5-3.

Chassis

and

Miscellaneous Parts.

Reference

Designation

HP

Part

Number

Qty

Description

CHASSIS PARTS

C1

C2

F1A

FIB

S 1

S2

W1

XF

I

01 60-428 1

0160-4281

21 10-0234

21 10-0235

3101-1261

3101-1234

8120-0616

21 10-0564

2

1

1

1

I

1

1

CAP-FXD 2200PF

+-20%

2SOVAC (RMS)

CAP-FXD 22OOPF +-2VA 2SOVAC (RMS)

FUSE. 1A 25OV

TD

(FOR 220/240V OPER)

00/ 1 20V OPER)

FUSE .2A 250V TD (FOR 1

SWITCH PF SPDT MOM 1 A I

I

SAC

SWITCH-SL DPDT-NS STD 1.5A 25OVAC SLDR

CABLE

ASSY

26AWG 16-CNDCT

FUSE HOLDER BODY 12A MAX FOR UL

MISCELLANEOUS PARTS

0362-01 87

0380-0644

1251-2357

1400-001 7

1400-0090

21 10-0565

21 10-0569

2200-01 41

2200-0528

2420-0022

3101-1820

5040-0270

5080-0098

71 20-3760

7

120-4006

7120-4835

7120-8732

7122-0058

.

8120-1378

59307-00004

59308-60007

1

2

1

2

1

1

1

3

2

6

1

2

1

1

1

1

1

1

1

1

1

CAP-WIRE TERMINAL

STANDOFF-HEX .327-IN-LG

6-

32

CONNECTOR-AC PWR HP-9 MALE FLG-MTG

CABLE CLAMP

FUSE HOLDER RUBBER WASHER

FUSE

HOLDER CAP I 2A MAX FOR

UL

FUSE HOLDER COMP. NUT; THREAD M 1 2.7

SCREW-MACH(HEAT SINK) 4-40.3 12-IN-LG

SCREW-MACH(TRANSF0RMR) 4-40 1.8 7 5-IN-LG

2 THD .2 3 IN-THK

.3

54-OD

NUT-SPCLY 6

3

-

CAP-PUSHBUTTON WHITE .2IN-DIA

.I

55-IN-LG

LAMP HOLDER-WHITE

SERIAL PLATE

LABEL-INFO 3-IN-WD 5-IN-LC AL

LABEL-WARNING .4IN-WD 3.1 5-IN-LG

LABEL-INFO

.7

5-IN- WD 2-IN-LG VINYL

LABEL-WARNING 2-IN-WD 3-IN-LG MYLAR

5-IN-WD 1.5-IN-LG AL

PLATE-SER

.

POWER CORD SET 18AWG 3-COND 90-IN-LG

BRACKET-SWITCH

STRAP-GROUND

2-IN

Page

5-7

HP

106-59992A

Time

Interval

Calibrator

Replaceable Parts

Table

5-4.

Cabinet

Parts.

Reference

HP

Part

Description

Designation

Number

Q~Y

5040-7203 1

TRIM,

TOP

59992-00001

1

PANEL, FRONT

59307-00002

1

PANEL,

5021-5813

1

FRAME, FRONT

SUB

5001-0438

2

TRIM,

SIDE

5040-7201

4

FOOT

5040-7209

1

COVER, BOTTOM

59307-00005

1

BRACKET,

MOUNTMG

5040-72 12

2

COVER,

SIDES

59992-00002

1

PANEL, REAR

5040-7208

1

COVER, TOP

Page

5-8

HP

306-59992A

Time Interval Calibrator

Replaceable Parts

5-3.

COMPONENT LOCATORS

The component locators for the

A

1

VHF

Switch Control Board and the

A2

VHF

Switch Board are displayed on the next two

pages.

Page

5-9

Al

CONTROL

V

HF

SWITCH

- -

BOARD 159992-60001

)

- -

*3TES

DS7

IWU)

DSlO ARE PART OF

SWITCH IWOICATOR THlU

80

RESPECTIVELY.

2

SWITCH

*Isle

IS

A

a-s~~r~ow

DUSHBUITOU SWITCW wnlcw

IS

CAM0

SO

WAT WWN WE

OF

THE

4

STATIONS

IS

CLOSE0 WE

OTHER 3 STATIONS ARE OPEN.

S

REFETYKE MSIGWTIOUS WlTHlW

A00 4SSEMBLY THIS ISSEMBLY NUYWR ARE ABIREVIATED. TO

..

BO

es

ABBREVIATIOW FOR COIRETE

OESCRIPTION.

4

UNLESS OTMElllSE RDCATE~

RESISTAWE IS IN OHMS;

CAP4CITUICE

IS

111 PICOFUADS.

THIS

SECTIW

OF

scnEmATr

IS

UOT

USE0 IU THE JO6-SQWZA TuEREcCeF

UII),U&

L

U20 ARE MOT INCLUDED

011

THE BOARO. WlS WAR0 IS DUAL

PURPOSE ALL COMPONENTS ARE

USED ON THE 595071.

-

FRCUT

VIP* Q

UP3

AM0

U26

FROWT VIEW

OC

UZ7

ED=

ED=

GDOUWD I21

INPUT 111

OUT"

"

GROUWO 131

I

WPUT 121

OUTPUT

Ill

(NOT USED1

--

- -

!

--

--

---

--

- -

J06-59992A

A1

VHF

SWITCH CONTROL BOARD

Page

5-11

C2 C3

00

rrcis

uc20

*

K

1

& J4

LOCATED ON BACK SIDE OF BOARD

A2

(59992-60002) COMPONENT LOCATOR

Page

5-12

HEWLETT

PACKARD

MANUAL PART NUMBER

59992-91094

PRINTED

IN

U.S.A.

2024年9月23日发(作者：班夏菡)

HPARCHIVE

This vintage Hewlett Packard document was

preserved and distributed by

www.

Please visit us on the web!

Scanned by on-line curator: Jack Hudler

**

For

FREE

Distribution Only

**

OPERATING

AND SERVICE

MANUAL

TIME INTERVAL

CALIBRATOR

Pa

PACKARD

HEWLETT

HEWLEl'T

PACKARD

OPERATING AND

SERVICE

MANUAL

506-59992A

TIME

INTERVAL

CALIBRATOR

SERIAL PREFIX: 2526A

This manual applies

to

Serial Prefix

25264

unless accompanied

by

a

Manual Change

Sheet indicating

otherwise.

Q

Copyright

HEWLETT-PACKARD COMPANY

1985

5301

STEVENS CREEK BOULEVARD. SANTA

CLARA.

CALIFORNIA 95051

MANUAL PART

NUMBER

59992-91094

Printed OCTOBER

1985

www.

.

CERTIFICATION

HewIm-hckard Company certifies that this

product

met

its

published sFificatiohs at the time of shipment

from the faCtOfy. Hewlett-Padcard further certifies that its calibration measurements are traceable to the

United States National Bureau of Standah, to the extent allowed by the Bureau's calibration facility, and to

the calibration facilities of other International Standards Organization members.

WARRANTY

This Hewlett-Padcard instrument produa

is

warranted against defects in material and workmanship for a

period

of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at

its

option, either repair or replace products which prove to

be

defective.

For

warranty service or repair, this product must

be

returned to

a

service facility designated by HP. Buyer shall

prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However,

Buyer shall pay

all

shipping charges, duties, and taxes for products returned to

HP

from another country.

HP warrants that

its

software and firmware designated by HP for use with an instrument will execute its

programming instructions when properly installed on that instrument. HP

does

not warrant that the

operation of the instrument, or software,

or

firmware will

be

uninterrupted or error free.

LIMITATION

OF

WARRANTY

The

foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by

Buyer, Buyer-supplied software

or

interfacing, unauthorized modification or misuse,operation outsideof the

environmental specifications for the product, or improper site preparation or maintenance.

NO OTHER WARRANTY

IS

EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

EXCLUSIVE REMEDIES

THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT

BE

LIABLE FOR ANY DIRECT, INDIRECT,SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER

BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.

ASSISTANCE

Product

maintenance agreements and other customer assistance agreements are awilable for Hewlett-

Packard products.

for

any assistance, Contad your nearest Hewlett-hckard Sales and Service Office.

Addresses

are provided at

the back of this manual.

www.

Table

of

Contents

Section I

GENERAL

lNFORMATlON

Page

A

?'RODUCTION

....................................................

1.1

1.

2.

GENERAL DESCRIPTION

...............................................

1

.

1

.

1

.

3

.

SPECIFICATIONS

....................................................

1

2

1

.

4

.

EQUIPMENT SUPPLIED

...............................................

1-2

1

.

5

.

RECOMMENDED

TEST

EQUIPMENT

......................................

1

.

3

Section

2

INSTALLATION

Page

2-

1

.

IN?'RODUCTZON

....................................................

2-1

2-2 PREPARATIONFORUSE

..............................................

2-1

..................................................

2-1 2- 3 Power Requirements

.

-On

.......................................................

2-2

2-

5

.

LOCAL OPERATION/REMOTE OPERATION

.................................

2-2

2-6

.

Setting the HP J06-59992A HP-IB Address

...................................

2-2

2-

7

.

HP-IB Interconnections

................................................

2-3

Section

3

OPERATING INFORMATION

Page

Uc'I'ION

....................................................

3-1

3-LADJUSTMENTS

.....................................................

3-1

3-3

.

OPERATION VERIFICA~ON

............................................

3-1

3-4

.

AUTOMATED CALIBRATION ROUTINE --USING HP 5370AIB COUNTER

.............

3-3

3.5

.

AUTOMATED CALIBRATION ROWTINE ..USING HP

5

363B PROBES

................

3-6

3.6

.

TROUBLESHOOTING HINTS AND GENERAL COMMENTS

........................

3-9

3.7

.

HP-IB PROGRAM LISTINGS

............................................

3-9

Section

4

THEORY

OF

OPERATION

Page

UCTION

....................................................

4-1

4.

2.

TIME

INTERVAL CALIBRATOR

..........................................

4-1

4- 3

.

A

l

VHF

Switch Control Board

...........................................

4-1

4.4

.

A2

VHF

Switch Board

................................................

4-1

.4.

5.

Theory of Operation

..................................................

4-1

4.6

.

HP-IB COMMAND OPERATION

........................................

4-1

4.7

.

INPUT SIGNAL CONVERSION

.........................................

4-2

4.8

.

CALIBRATION WITH AN OFFSET VOLTAGE

...............................

4-3

4.9

.

EXAMPLE OF A NON-ZERO TRIGGER LEVEL MEASUREMENT

.................

4-4

4-

1

0

.

Functional

Block

Diagram Theory

........................................

4-5

4-

1 1

.

HANDSHAKE

LOGIC

..............................................

4-5

4.12

.

BUSLOGIC

.....................................................

4-5

4- 1 3

.

DECODE LOGIC

..................................................

4-5

www

.

h

Table of Contents

4-7

4-

1

4

.

REMOTE/LOCAL LOGIC

4-7

4-

1

5 LOCAL LOCKOUT LOGIC

4-

16

.

RELAY

SELECT

LOGIC

.....................................

4-7

.

....................................

....................................

Section

5

REPLACEABLE PARTS

Page

5-

1

.

INTRODUCTION

...........................................

5-1

5-2

PARTS

ORDERING

..........................................

5-1

5-

3

.

COMPONENT LOCATORS

.......................................

5-9

www

.

h

SAFETY

CONSIDERATIONS

GENERAL

This product and related documentation must be reviewed for familiarization with safety markings and

instructions before operation.

This product is a Safety Class

I

instrument (provided with a protective earth terminal).

BEFORE

APPLYING

POWER

Verify that the product is set to match the available line voltage and the correct fuse is installed. Refer

to Section Il, Installation.

SAFETY EARTH GROUND

An uninterruptible safety earth ground must be provided from the mains power source to the product

input wiring terminals or supplied power cable.

SAFETY SYMBOLS

Instruction manual symbol; the

product will be marked with this

symbol when it is necessary for the

user to refer to the instruction

manual.

Indicates hazardous voltages.

The

WARNING

sign denotes

a

hazard.

It

calls attention to a

procedure, practice, or the like,

which, if not correctly performed or adhered to,

could result in personal injury. Do not proceed

beyond a

WARNING

sign until the indicated con-

ditions are fully understood and met.

The

CAUTION

sign denotes a

hazard. It calls anention to an

operating procedure, practice, or

the like, which,

if

not correctly performed or

adhered to, could result in damage to or destruc-

tion of part or all of the product. Do not proceed

beyond a

CAUTION

sign until the indicated con-

ditions are fully understood and met.

/j7

OR

Indicates

terminal

is

'Onnected

to chassis when such connection

is not apparent.

,,,

Directcurrent.

-

Alternating current.

SAFETY

INFORMATION

Any interruption of the protective grounding conductor

r

inside or outside the instrument1 or discon-

necting the protective earth terminal will cause a potential shock hazard that could result in personal

injury. (Grounding one conductor of a two conductor outlet is not sufficient protection.

I

Whenever it is likely that the protection has been impaired, the instrument must be made inoperative

and be secured against any unintended operation.

If

this instrument is to be energized via an autotransformer (for voltage reduction) make sure the common

terminal is connected to the earthed pole terminal (neutral) of the power source.

Instructions for adjustments while covers are removed and for servicing are for use by service-trained

personnel only. To avoid dangerous electric shock, do not perform such adjustments or servicing unless

qualified to do so.

s) of the same current

For continued protection against fire, replace the line fusels

I

only with

250V

fuse1

rating and type (for example, normal blow, time delay). Do not use repaired fuses or short circuited

fuseholders.

GENERAL

INFORMATION

rn

r;7

4-1. INTRODUCTION

This manual contains operating and sewice information for the

306-

59992A

Time Interval Calibrator. Included is the following.

***

general description of the calibrator

**+

specifications

**

equipment supplied and recommended test equipment

H*

installation information

**

operating information

**

automated procedure for determining calibration constants

**

HP-IB program listings

-

**

theory of operation

**

replaceable

parts

lists

component locators

-*

schematic diagrams

1-2.

GENERAL

DESCRIPTION

The

306-59992A

is a special instrument used to increase the accuracy of

precision time interval measurements. When employed to determine the sys-

tematic errors of a particular measurement set-up, the calibrator can provide

for absolute accuracy

on

the order of

+/-

100

ps

when making time interval

measurements with the Hewlett-Packard

5370A/B

Time Interval Counter.

The calibrator can also

be

used to improve the accuracy of the HP

53630

Time Interval Probes when used in conjunction with the

HP

5370A/B

counter.

The instrument itself

is

a linear, passive device which takes a stable input

pulse and produces two output pulses that are effectively in phase or 180

degrees out

of

phase. This provides two identical and coherent signals to the

input of a measurement instrument such,as

a counter. Any time difference

measured by the counter in

a calibration set-up is a measure of the errors as-

sociated with the measurement channels' electrical

path lengths and the trig-

ger level timing error of the counter.

The resuitant computed "calibration

constant" is then subtracted from the measurements that follow, thereby

removing the effect of systematic enon from the measurement results.

Page

1-1

www.

HP

J06-59992A

Time Interval Calibrator

General Information

1-3.

SPECIFICATIONS

The instrument specifications for the 106- 59992A Time Interval Calibrator

are listed in Table

I

-

1.

Table

1

-

1.

J06-59992A

Specifications.

Bandwidth: 1

MHz

to 200

MHz

square wave; 100 kHz to 200 MHz sine wave.

Input Voltage: SV peak-to-peak,

max.

Effective Edge Repeatability

<

1 0

pg

(error

contributed

by

J06- 59992A)

Insertion

Loss

3dB nominal.

Relay Settling Time:

4

ms nominal.

Output Offset Voltage: Input impedance:

1

Mohm NOMINAL

+/-

10V max

@

high impedance output load.

+/-

2V max

@

50

ohm

output load.

Settling time:

SO

ms NOMINAL.

Voltage Error:

DC

Output Resistance: 0.100 ohm, typical.

+/-

2 mV, max

@

high impedance output load

Power

Requirements: 48-66

Hz, 1

1

5

or 230 VAC,

+

1

0

7,

-

15 % 20 VA maximum.

1-4.

EQUIPMENT SUPPLIED

>

J06- 59992A Time Interval Calibrator

>

AC Power Cord

>

Documentation:

306- 59992A Operating and Service Manual

Product Note 53708-2, "Better Than 100

ps

Accuracy in HP 5370%

Time Interval Measurements Through Bias Error Reduction." HP Pub-

lication #02-5952-7770.

Page

1-2

www.

HP

106-59992A

Time Interval Calibrator

Cenenl

Information

1-5.

RECOMMENDED TEST EQUIPMENT

For

Local

Operation:

>

bc

Pulse Generator

measured.

--

a

ignal source capable of simulating the signal to

>

HP

5370A/B Time Interval Counter

>

Oscilloscope

--

dual channel, general purpose

>

DC

Voltage Source (Optional; used to provide offset voltage when

not using Time Interval Probes)

--

>

HP

5363B Time Interval Robes (Optional)

The procedures to follow to determine calibration constants using

Local Operation are contained in Product Note 5370B-2, "Better

Than

100

ps

Accuracy in Time Interval Measurements

Through Bias Error Reduction.

HP

5

"

3

708

For Remote Opention:

All equipment listed under Local Operation above,

PLUS

>

HP

Series 200 Controller such as

HP

9

8

36, 9 826,9

8

17') or 9 8 16f

>

HP-IB

Interconnection Cables

--

HP

108 3 3A/B/C/D

l

These controlIers require a separate disc drive such as the

HP

9

122

for

microfloppy discs or the

HP

9

125

for 5

3

1/2"

1/4"

floppy discs.

Page

1-3

INSTALLATION

Ma

~1

2-1.

INTRODUCTION

This section presents the information needed to prepare the

HP

J06-59992A

Time Interval Calibrator for use. Information to prepare for remote opera-

tion using

HP-IB

(Hewlett-Packard Interface Bus, HP's ~mplementation of

IEEE

Std.

4

8 8-

19

7

8)

is also included.

2-2.

PREPARATION FOR USE

2-3.

Power

Requirements

The

J06-

59992A Time Interval Calibrator operates from either

1

1

S

or

2

30

volts,

48

to 66

Hz

Before applying power, the voltage selector switch

mounted on

position

the

rear panel of the J06-59992A must

be

set to

the

correct

(1

15

or 230) using a small screwdriver, and the correct fuse must

be

installed.

This instrument uses a

50V

.2A

2

50V time-delay (TD) fuse for

volt operation or a .lA 2 time-delay

(TD)

fuse

for

1

1

5

230

volt operation.

Refer to Table

5-3

in Replaceable Parts for the

HP

Part Numbers of these

fuses.

BEFORE

PLUGGING

LINES,

THIS INSTRUMENT

INTO

THE

AC

be

sure the correct voltage and fuse have been

selected.

POWER

This

is

a

Safety

Class I

product (i.e., provided with

a

protective

earth terminal). An uninterruptible safety earth ground must

be

provided from the Mains power source to the product input

wiring terminals, power cord, or supplied power cord set. When-

ever it is likely that the protection has

been

impaired,

the in-

strument must

be

made inoperative and

be

secured against any

unintended operation. If this instrument is to be energized via an

external autotransformer for voltage reduction, make sure that

the common terminal is connected to the earthed pole of the

power source.

Page

2-1

HP

J06-59992A

Time Interval Calibrator

Installation

2-4. Power-On

The

J06-59992A

is

energized whenever

its

power cord is plugged into the

appropriate power source. The power indicator on the front panel will light.

BEFORE

APPLYING

POWER

TO

THE

INSTRUMENT, the

protective earth terminal of the instrument must

be

connected to

the protective conductor of the (Mains) power cord. The Mains

plug shall only

be

inserted in a socket outlet provided with

a

protective earth contact. The protective action must not

be

negated

by

the

use

of

an

extension

cord

(power cable) without

a

protective conductor (grounding). Grounding one conductor of a

two conductor outlet

is

not sufficient protection

2-5. LOCAL OPERATION/REMOTE OPERATION

The

HP

J06-59992A

Time Interval Calibrator

is

capable of being operated

through an external controller as well as in the local mode. The controller

used for remote operation must have

HP-IB

compatibility.

2-6.

Setting

the

HP

J06-59992A

HP-IB

Address

The

HP J06-59992A

HP-IB

instrument address is

set

with the

DIP

switch,

A2S1, which is accessible through an opening in the rear panel. Set the

IB

HP-

address using switches A1 through

AS

(switches

A6

and

A7

are not used).

Setting the switches

as

shown below will allow proper communication be-

tween the controller and the

106-

59992A according to the programs

provided with this documentation.

SWITCH

: A5

A4

A3

A2

A1

SEITING:

0

0

1

0

1

=

05

Decimal

Equivalent

Allowable

other than

HP-IB

05

address codes are

00

through

30.

If

is

used for the J06- the appropriate lines

a

code

59992A,

of the programs must

be

changed to agree with the different

calibrator address before proceeding. (See line

260

in

"CAL

5

3

7

0'

and

"CAL

5

3

6

3"

programs.

)

Page

2-2

HP

106-59992A

Time

interval

Calibrator

InsZalla tion

The

HP-IB

system allows interconnection

of

up

to

15

(including the controI1-

er)

HP-IB

compatjblc

jnstruments. The

HP-IB

cables have identical

"pig-

gyback'' connectors on both ends so that several cables can

be

connected to

a

single source without special adapters or switch boxer System components

can

be

connected in virtually any configuration desired. There must

be,

of

course,

a path from the controller to every device operating on the bus. Be

sure each connector

is

firmly screwed in place (finger tight) to keep it from

working loose during use.

www.

Page

2-3

-

OPERATING INFORMATION

rn

El

3-1.

INTRODUCTION

This

section presents the information needed to operate the

HP

306- 59992A

Time Interval Calibrator. The calibrator is used together with a high per-

formance time interval counter such as the

HP

5370A/B. The calibrator

helps to determine the errors characteristic of any particular measurement

situation. The measured error data is used in a calculation to arrive at a

number which represents the contribution of the systematic errors. This.

number

is

then subtracted from the measurements that follow, thereby in-

creasing the accuracy of the results by factoring out errors introduced

by

the

elements of the measurement set-up itself.

An important element of the documentation for the

HP

J06-59992A is Product Note 5370B-2, 'Better Than 100 ps

Ac-

curacy in

HP

5370B Time Interval Measurements Through Bias

Error Reduction." This Product Note describes the methods for

manually determining the calibration constants for time interval,

pulse width, and transition time measurement set-ups. It also ex-

plains the reasoning behind the mathematical formulas used to at-

rive at the calibration constants. However, it is not necessary to

fully comprehend the mathematical formulas in order to obtain

the calibration constants using the automated routines referenced

in this section.

3-2.

ADJUSTMENTS

There are no adjustments required for the J06-59992A.

3-3.

OPERATION VERIFICATION

Description:

This verification test checks the basic operation of the

HP

306-59992A Time

Interval Calibrator.

Equipment Required.

>

Pulse Generator

>

DC

Voltage Source

>

Oscilloscope

Page

3-1

HP

306-59992A

Time Interval Calibrator

Operating Information

OSCILLOSCOPE

*

---

r-,iiio1=1

IN

A

,It

1-1

BI

PULSE

GENERATOR

1

I

I

TIME

I

CALIBRATOR

INTERVAL

v

OFFSET VOLTAGE

4

I

L

VOLTAGE,

-

SOURCE

-I

Figwe

3-

I.

Operation Verification

Test

Set

-up.

Procedure:

a

Set the pula generator to produce a square wave, 10

MHz

signal with an

amplitude up to

5

V p-p and a

50%

duty cycle.

b. Connect the pulse generator signal to the J06- 59992A Input. Connect

the Outputs to Channel A and

B

of the oscilloscope. Set coupling for both

oscilloscope inputs to 50-ohm.

e.

Select pushbutton #I on the front panel of the J06-59992A and observe

the output signals with the oscilloscope.

d.

Verify that the signals at outputs A and

B

are 10

with an amplitude of approximately

70% of input, centered at 0. OOV,

MHz

in-phase signals,

and a

5WA

duty cycle. There should

be

no signal breakup or distortion. Note that

the reduced output amplitude is due to the nominal 3dB loss of the

J06- 59992A power-splitters.

e. Select pushbutton #2 and verify that the signals appear the same as in step

d.

f.

Select pushbutton

#3

and verify that the signals are now 180 degrees

out-of -phase.

g.

f.

Select pushbutton

#4

and verify that the signals appear the same as in step

h

Apply a +2V signal from the dc voltage source to the Offset Voltage Input

on the rear panel of the J06-59992A and verify that the signals measured on

.

the oscilloscope are both offset from ground by +2V.

Page

3-2

HP

J06-59992A

Tlme

lnterval Calibrator

Operating

Information

i.

Apply a -2V signal to the Offset Voltage Input

and

observe that the signals

measured on the oscilloscope are both offset from ground by

-2V.

j.

Disconnect the test equipment from the J06-59992A Time ~nterval

Calibrator.

3-4.

AUT OMATEO CALIBRATION ROUTINE --USING

HP 5370A/B

COUNTER

Description:

This routine automatically determines the calibration constants for the

5370A/B counter. In this calibration procedure, known signals from the

-

calibrator are fed into the 5370A/B. Counter readings, which depict

measured errors,

are

represented

as

"calibration constants." The eight con-

stants generated by the program apply to measurements with SEP and COM

counter configurations and with combinations of

"+"

and

"-"

slopes.

The calibration signal duty cycle

is

always at

50%;

however, voltage swing,

mid-pulse voltage offset, transition rate, and pulse rate can

be adjusted

by

user to simulate actual measurement conditions.

Equipment Required:

>

HP

5

3

70AD Time Interval Counter

>

DC

Voltage Source to provide an offset voltage if making

measurements at non-zero trigger levels.

--

> HP Series 200 Controller such

as

HP 9836, 9826, 9

8

17*, 9 8 16*

with BASIC

*Requires separate disc drive

>

HP-IB Cables

>

Pulse Generator--must be capable of generating a signal which:

1.

Simulates the voltage swing XI.

5

and the transition rates

(rise/fall times) of the desired signal to

be

measured.

2.

Has a SWA duty cycle, approximately, but the duty cycle must not

change during the few seconds of calibration.

3. Has a constant rate of at least 1

which to calibrate.

MHZ.

User decides the rate at

Page

3-3

Operating Information

HP

J06-59992A

Time Intewal Calibrator

TIME INTERVAL

CALIBRATOR

Figwe

3-

2.

Calibration Using

the

'CALS

370'

Program.

(1)

The signal swing at this point from the Pulse Generator should

k

1.5

times the desired signal to

k

measured.

(2)

The

signals at this point going from the Time Intewal Calibrator to the

Counter should simulate the actual signal to

k

measured later.

counter, and the controller. Set the HP-IB address of the J06-59992A to 05.

Set the HP-IB address of the counter to

07.

b.

Power up the pulse generator and the instruments connected by the HP-IB

bus.

a.

Connect the HP-IB cables between the 106-599924 the

HP

5370A/B

c

Connect a pair of cables from the J06- 59992A calibrator outputs A and B

to the counter's START and STOP inputs

In order for the calibration to be valid, these same cables must

be

uad for the measurements which follow the calibration routine.

d.

Set counter to SEPARATE, 8et START and STOP channels to

DC,

50 OHM,

DMDE-BY

1

ATTENUATION, and TRIGGER LEVEL to

PRESET.

-

Page

3-4

HP

106-59992A

Time

Interval Calibrator

Operating Information

To

allow an offset voltage limit of

+/-

1 OV, the counter should be

set to 1 Megohm, which means the pulse generator must

be

a good

which also necessitates changing two program

50 ohm source, and the counter should

be

set to Divide-By-10,

lines.

Add an ex-

clamation point in front of line

320,

and remove the exclamation

point from in front of line 330

in

"CAL5 3 70."

e.

Set the pulse generator to produce

a

signal with a 50% duty cycle at a

frequency selected by the user. Adjust amplitude to be 1.5 times that of-the

desired signal.

f.

Connect this signal to the Input of the J06-

59992A.

g.

If using an offset voltage, connect this voltage to the Offset Voltage Input

on the rear panel of the Time Interval Calibrator.

identical to the trigger level voltage of the signal to

This dc voltage should

measured.

be

be

h.

Load the "CAL5

3

70"

calibration routine program into memory of the

controller.

i.

Run the program. The user will need to respond to prompts displayed on

the CRT. This involves entering the offset voltage value used and operating

the SEP/START COM switch on the counter.

j. The display provides a summary of the calibration constants to

be

sub-

tracted from the counter measurements, depending on the type of

measurement to be made. Also included is a list

of

the consistency para-

meters. These provide a measure of the typical experimental error that can

be

expected when using the calibration constants.

Example

of

results:

CALS370

CALIBRAnON CONSTANTS:

(TO BE SUBTRACTED FROM COUNTER READINGS)

TIME INTERVAL

TIME INTERVAL

+

-

TO

-

-

18

ps

TO

+

-73

TIME INTERVAL

+

-

TO

- -

ps

52 ps

TIME INTERVAL TO

-

TO

-

+

-48

ps

WIDTH

+

235

WIDTH TO

ps

RISE -TIME SKEW

+

250

168

ps

ps

FALL-TIME

SKEW

107

ps

CALIBRATED AT 50

MHz

with OFFSET

@

CONSISTENCY:

.

5 VOLTS

TI

++,--:

-1

ps

TI

+-,+-:

WIDTH:

16

2ps

ps

Page

3-5

www.

HP J06-59992A

Time Intewal Calibrator

Operating Information

3-5. AUTOMATED CALIBRATION ROUTINE --USING

HP

53638

PROBES

Page

3-6

Description:

This routine automatically determines the calibration constants for the

HP

5370A/B counter when used with the HP 5 36 38 Time Interval Probes. In

this calibration procedure, known signals from the calibrator are fed into the

5

370A/B. Counter readings, which depict measured errors, are represented

as "calibration constants." The eight constants generated by the program ap-

ply to measurements with SEP and

COM

counter configurations and with

combinations of

"+"

and

"-"

slopes.

The calibration signal duty cycle is always at

5(r/.;

however, voltage swing,

mid-pulse voltage offset, transition rate, and pulse rate can

be

adjusted by

user to simulate actual measurement conditions.

Equipment

Required:

>

HP 5370A/B Time Interval Counter

>

HP

5

363B Time Interval Probes

>

HP Series 200 Controller such as HP 9836,9826,981 7*, 981

'6

with BASIC

*Requires separate disc drive

> HP-IB Cables

>

Pulse Generator--must

be

capable of generating a signal which:

1. Simulates the voltage swing

XI.

5

and the transition rates

(rise/fall times) of the desired signal to

be

measured.

2.

Has a 50% duty cycle, approximately, but the duty cycle must not

change during the few seconds of calibration.

3.

Has a constant rate of at least

1

MHz User decides the rate at

which to calibrate.

HP

106-59992A

Time Interval Calibrator

Operating Information

GENERATOR

Figwe

3-3.

Calibration Using the

'CALS363'

Program.

(1)

The signal swing at this point from the Pulse Generator should

be

1.5

times the desired signal to

be

measured.

(2)

The signals at this point going from the Time Interval Calibrator to the

Counter should simulate the actual signal to

be

measured later.

Procedure:

a. Connect the HP-IB cables between the J06-59992A, the HP 5370A/B

counter, HP 5363B Time Interval Probes, and the Controller. Set the

of the counter to

07.

5

HP-IB

address of the J06- 59992A to 05. Set the HP-IB address of the HP 363B

Time Interval Probes to 04, and the address

b.

Power up the pulse generator and the instruments connected

by

the HP-IB

bus.

c.

Connect a pair of cables from the 53638 Probe outputs to the counter's

START and

STOP

inputs.

In order for the calibration to be valid, these same cables must be

used for the measurements which follow the calibration routine.

d.

The Time Interval Probes should

be

pre-calibrated for trigger-level ac-

curacy as explained

in

the HP 5363B Operating and Service Manual. (Insert

probes into 536

38 and press "Level" witch down for several seconds.)

Page

3-7

HP

J06-59992A

Time

Interval Calibrator

Operating Information

Page

3-8

e. Connect a SO-ohm load and a Time Interval Probe to each of the

306-59992A A and B Outputs using the special tee adapters available with

the Time Interval Probes.

f.

Set counter to SEPARATE, set both START and STOP channels to

DC,

50

OHM, DIVIDE-BY

-

1

ATITNUATION, and

TRIGGER

LEVEL to PRESET.

To allow an offset voltage limit of

+/-

1

OV, the 50 ohm loads at

the Outputs of the J06-59992A should

be

removed. In this case,

the pulse generator must

be

a good 50 ohm source.

g.

Set the pulse generator to produce a signal with a 50% duty cycle at a

frequency selected by the user. Adjust amplitude to be 1.5 times that of the

desired signal.

h.

Connect this signal to the Input of the 306-59992k

i

Connect the Trigger Level Output START voltage from the Time Inter-

val Probes rear panel to the Offset Voltage Input on the rear panel of the

Time Interval Calibrator. This dc voltage, set through the program, should

be

identical to the trigger level voltage of the signal to be measured. The

Time Zero knob can be set to any position, but it must remain at that set-

ting during calibration and the measurements which follow.

When using the 5363B Time Interval Probes to produce the offset

voltage, the trigger level of the counter must be set to 0.00

V.

The program automatically sets the trigger level of the counter to

this value regardless of the Probes trigger level.

j.

Load the "CALS 36

3"

calibration routine program into memory of the

controller.

k.

Run the program. The user will need to respond to a prompt displayed on

the CRT. This involves entering the offset voltage value used.

L

The display provides a summary of the calibration constants to be sub-

tracted from the measurements of the probe/counter combination depend-

ing on the type of measurement to be made. Also included

is

a list of the

consistency parameters. These provide a measure of the typical experimen-

tal error that can

be

expected when using the calibration constants.

www.

HP

306-59992A

Time

Interval Calibrator

Operating Information

Example

of

results:

CAL5363

CALIBRATION CONSTANTS:

(TO BE SUBTRACTED FROM COUNTER READINGS)

74, ps

TIME INTERVAL

+

TO

+

TIME INTERVAL TO

46

ps

224 ps

TIME INTERVAL

+

TO

ps

TIME INTERVAL

TO

+

-86

152

ps

WIDTH

+

TO

WIDTH

TO

+

13

P

RISE-TIME SKEW -142

ps

FALL-TIME

SKEW

-239

p~

CALIBRATED AT

50

MHz with OFFSET

@

1.3 VOLTS

CONSISTENCY:

n

++,--:

23

ps

TI

+-,+-:

-42

ps

WIDTH

:

22

ps

-

-

- -

-

-

-

3-6.

TROUBLESHOOTING HINTS AND GENERAL COMMENTS

A

typical calibration takes about 7 seconds. If the programs should

"hang

up", check for the following:

>

Verify that all electrical connections between test instruments are

correct.

> Verify that all test instruments are set properly.

>

Verify that the instrument

HP-IB

addresses correspond to those in the

HP-

IB programs.

>

Verify that the trigger level is not greater than

+/-

2V

for a 50 ohm

out-

put load.

>

When using a dc voltage source to provide an offset voltage it must agree

with the v01tage level entered

by

the user at the program prompt.

3-7. HP-I6 PROGRAM LISTINGS

Following are the listings of the two programs referenced in this section to

run the automated calibration routines with the

HP

306-59992A

Time

In-

terval Calibrator.

a.

Calibration Routine using

HP

5 370A/B

File TAL 5 3

7

0''

b. Calibration Routine using

HP

53638

Time

Interval Probes

File "CAL 5 3

6

3"

Page

3-9

www.

101 RE-STOREJu~~L5370"1

20

PRINT "CAL5370 REV 12

JUN

85"

-

-

30

1

ORIG

6

DEC 84

40

!

THIS

PROGRAM

EXECUTES

THE

CALIBRATION ALGORITHM DESCRIBED IN D. CHUfS

50

1

PAPER "CALIBRATION OF SYSTEMATIC ERRORS IN PRECISION TIME-INTERVAL

60

1

COUNTERSn, INTERNATIONAL TEST CONFERENCE, PHILADELPHIA,

1985;

70

1

80

1

SET-UP PROCEDURE

90

1

1) CONNECT

A

PULSE SOURCE TO

THE

INPUT OF CALIBRATOR,

3

DB

LARGER

100

1

THAN

THE

DESIRED SIGNAL TO BE

MEASURED AND

APPROXIMATELY THE

SAME RISE/FALL TIMES, -50% DUTY-CYCLE, STABLE 1 TO 100

MHz.

110

1

120

1

2)

CONNECT A PAIR OF CABLES FROM CALIBRATOR OUTPUTS

A

61

B

130

!

TO COUNTER START

&

STOP INPUTS RESPECTIVELY

(NOTE: CABLE MISMATCHES

ARE

INCLUDED IN

THE

CALIBRATION CONSTANTS,

140

!

AND SAME CABLES SHOULD BE USED LATER FOR DOING MEASUREMENTS;

150

1

160

!

ALSO "CABLES" INCLUDE LINEAR, PASSIVE OR ACTIVE PROBES)

170

1

3)

SET COUNTER TO SEPERATE: DC/50 ohms/Xl/PRESET to BOTH CHANNELS

180

1

4) HPIB ADDRESSES: COUNTER-707, CALIBRATOR-705

190

1

5) CONNECT A PRECISE OFFSET VOLTAGE SOURCE TO

T#E

OFFSET INPUT: ENTER

200

!

THE EXACT SAME VALUE WHEN PROMPTED. DEFAULT

IS

0.00 VOLT

210

!

220

1

230

1

INITIALIZATION

240

!

250 Ctr707

!

HPIB

ADDRESSES

260 Cal-705

270 Ps=l.E+12

280 OUTPUT Cal;"BlW

290 OUTPUT CtrtWFN1"

300 INPUT

"Type

in

OFFSET (volts); set counter to mwSEPnu and nwCONTIMTEnwtt

Ofs

310 OUTPUT Ctr;wST6n

!CLEARS

ANY

PREI~IOUS

REFERENCE

(IF

DESIRE;)

320 LevelrOf

s

ITHIS LINE USED WITH

X1

ATTENUATION

!THIS LINE USED WITH

X10

ATTENUATION

330 !LevelrOfs*.l

340 OUTPUT CtrtwFN2TRw

fSET COUNTER TRIGGER LEVEL TO MATCH OFFSET

350 OUTPUT Ctr USING nnnTAMm,;Level

360 OUTPUT Ctr USING mwnTOnw,;Level

370 OUTPUT Ctr

t

**FN4GT2MD2MRw

IMEASURE

FREQUENCY/PERIOD

380 OUTPUT Ctrt nMRvl

390 ENTER CtrtPer !PERIOD/FREQUENCY

400

!

410

1

420 DISP

"

TIME-INTERVAL CALIBRATION

IN

PROGRESS"

430 OUTPUT CtrtwFN1ST1SS3AR2EAOMRn

44 0 OUTPUT Ctr

t

nSRSAISOIMRvg

450 OUTPUT CtrtmMRn

460 Tl=FNTi(Per,Ctr)

!

+ +

DIRECT

470 OUTPUT CtrtnSA2S02MRn

480 OUTPUT Ctr:"MRW

490 TZ=F'NTi (Per, Ctr)

1

DIRECT

500 OUTPUT Cal;wB2w

510 WAIT .004

520 OUTPUT Ctr:wMRa

1

SWAPPED

530 T3=FNTi(Per,Ctr)

540 OUTPUT CtrtwSAISOIMRw

550 OUTPUT CtrtWMRn

!

+

+

SWAPPED

560 T4=FNTi (Per, Ctr)

570 OUTPUT CaltnB3tw

580 WAIT .004

590 OUTPUT Ctr;nSA1S02MRn

600 OUTPUT CtrtwMRn

!

+

DIRECT

610 TS-FNTi (Per, Ctr)

620 OUTPUT CtrtWSA2SOlMRa

I

630 OUTPUT Ctr;"MRn

(Page

3-11)

640 T6=FNTi(Per,Ctr)

I

+

DIRECT

650 OUTPUT Cal;wB4w

660 WAIT .004

- -

-

-

-

-

www.

670 OUTPUT CtrtmMRm

680 T7-FNTf (Per, ctr)

1

+

SWAPPED

690 OUTPUT CtrtWSA1SO2MRm

700 OUTPUT CtrtwMRn

710 ~8=F'NTi(Per,Ctr)

!

+

SWAPPED

END

TIME-INTERVAL CALIBRATION

720

!

730

!

740

!

750 OUTPUT Ctr USING mmmTAwm,;Level*.5 !START COM DIVIDES BY 2

@

50

OHM

760 OUTPUT Ctr USING mmmTOmm,;Level*.5 !START COM DIVIDES BY 2

@

50

OHM

770 DISP %et counter to nmSTART COM1*",

and

mmCONTINUEp*w programn

780 PAUSE

790 DISP WIDTH, RISE/FALL SKEW CALIBRATION IN PROGRESSm

800 !SINCE COUNTER INPUTS

ARE

COMMON, THIS MEANS ONLY THE START-CHANNEL IS

810 lBEING USED FOR MEASUREMENTS.

THE STOP-CHANNEL SERVES ONLY AS A 50-ohm

820 !TERMINATION FOR THE CALIBRATOR B-OUT=

830 !IF NOTHING ELSE IS CHANGED, CALIBRATOR SHOULD BE ON B4

840 OUTPUT Ctr;mAR1SA1S02MRn

850 OUTPUT Ctr: nMRt*

860

ENTER

~trt~4

!

+

WIDTH SWAPPED

870 OUTPUT CtrtwSA2S01MRw

880 OUTPUT CtrtmMR"

890 ENTER Ctr;W3

!

+

WIDTH SWAPPED

900 OUTPUT Cal;B*B3m

910 WAIT .004

920 OUTPUT CtrtmMRm

930 ENTER CtrtW2

!

+

WIDTH DIRECT

940 OUTPUT CtrtnSAlS02MRH

950 OUTPUT Ctr

:

"MR"

960 ENTER CtrtWl

1

+

WIDTH DIRECT

970 OUTPUT CaltWBlm

980 WAIT -004

990 OUTPUT CtrtWAR2SA1SOLMRw

1000 OUTPUT Ctr:nMRH

1010 ENTER CtrtR

!

+

+

RISE TfME SKEW

1020 OUTPUT CtrtmSA2S02MRm

1030 OUTPUT Ctr:mMRw

1040 ENTER CtrtF

!

FALL

TIME SKEW

!

1050

END

WIDTH RISE/FALL SKEW CALIBRATION

10601

10701

1080 OUTPUT Ctr;94DlW

f

RETURN

COUNTER TO CYCLING MODE

logo! BEGIN

CALCULATE

CALIBRATION CONSTANTS

1100 Cpp=.S*(Tl+T4)

1110 Cnn=.5*(T2+T3)

1120 Cpn=.S*(TS+TS)

1130 CnpmO5*(T6+T7)

1140 IF Wl>Per THEN Wl=Wl-Per

:

1150 IF W2>Per THEN W2=W2-Per

1160 IF W3>Per THEN W3=W3-Per

1170

IF

W4>Per THEN W4-W4-Per

1180 Wpn=.S*(Wl+W4-Per)

1190 Wnp=.5*(W2+W3-Per)

1200

!

END CALCULATE CALIBRATION CONSTANTS

1210

!

1220

!

1230

!

BEGIN CALCULATE CONSISTENCY PARAMETERS (Page 3-12)

. .

1240

Pp-.

S* (Tl-T4)

1250 Nn=,S*(T2-T3)

1260

Pnl-.

S*

(TS-TS)

1270 Pn2r05*(T6-T7)

1280

Wpnl=Wl-.5*Per-.25*(Wl-W2+W3-W4)

1290

Wpn2-W4-.5*Per+.25*(Wl-W2+W3-W4)

1300

Wnpl=W2-.5*Per+.25*(Wl-W2+w3-W4)

1310

Wnp2=W3-.5*Per-.25*(Wl-W2+W3+4)

1320

!

END

CALCULATE CONSISTENCY

PARAMETERS

-

-

-

-

-

-

-

-

www.

1330

PRINT

"

CALIBRATION CONSTANTS:"

1340

PRINT

"

(TO

BE

SUBTRACTED FROM COUNTER READINGS)"

1350

PRINT USING

nn"

TIME INTERVAL

+

TO

+

"*, DDDDDD,

""

p~~w*:Cpp*ps

1360

PRINT USING

"nu

TIME INTERVAL TO

,

DDDDDD,

""

psnWn:Cnn*ps

1370

PRINT USING

"""

TIME INTERVAL

+

TO

"",

DDDDDD,

nn

psnWw;Cpn*ps

1380

PRINT USING ""* TIME INTERVAL TO

+

"",

DDDDDD,

nn

psttHn;Cnp*Ps

1390

PRINT USING

nnN

WIDTH

+

TO DDDDDD,

urn

psnW";w pn*Ps

1400

PRINT USING

nwm

WIDTH TO

+

,

DDDDDD,

nw

pswnn;Wnp*Ps

1410

PRINT USING

"""

RISE-TIME

SREW

"*, DDDDDD, psnnn;R*ps

1420

PRINT USING FALL-TIME SKEW

"",

DDDDDD, psnH*;F*Ps

1430

PRINT "CALIBRATED AT n;INT(1.E-6/Per+.S);u

MXZ

with

OFFSET

@

w;Ofs;ff

VOLTS"

1440

PRINT nCONSISTENCY:t@

1450

PRINT wTI

++,--:

niINT(Ps*(Pp-Nn)*.5);npsn

1455

PRINT @@TI

+-,+-:

w;INT(Ps*(Pnl-Pn2)*.5):ttpsm

1460

PRINT nWIDTH

:

w;INT(Ps*(Wpnl-Wpn2)*.5);npsn

1470

!PRINT ttWIDTfl

-+:

n;INT(Ps*(Wnpl-Wnp2)

*.5)

t"psn

1480

DISP ItEND CALIBRATION't

1490

END

1500

1

1510

!

1520

DEF

FNTI

(P,

Ctr)

!RETURNS

T.I.

1530

ENTER Ctr;T

1540

IF ABS(T) <.S*P

THEN

1570

!WITH PROPER PERIOD

COMPLEMENT

1550

OUTPUT Ctr;ttPCMRw

1560

ENTER CtrtT

1570

RETURN

T

1580

FNEND

-

-

-

-

-

-

"",

"""

(Page

3-13)

'

10

1

RE-STORE

"

363"l

20 PRINT

"-

REV

19

JUL

85"

30

!ORIG 11 DEC 84

40

1

THIS PROGRAM EXECUTES

THE

CALIBRATION ALGORITHM DESCRIBED IN D. CHUtS

50

1

PAPER

n~~~~~~~

OF

SYSTEMATIC

ERRORS IN

PRECISION

TIME-INTERVAL

60

1

COUNTERSn, INTERNATIONAL TEST CONFERENCE, PHILA, 1985, WITH HP5363B

70

1

SET-UP PROCEDURE

80

1

1) CONNECT

A

PULSE SOURCE TO THE INPUT OF CALIBRATOR,

3

DB LARGER

90

!

THAN

THE

DESIRED SIGNAL TO BE MEASURED AND APPROXIMATELY THE

100

1

SAME RISE/FALL TIMES, -50% DUTY-CYCLE, STABLE

1

TO 100

MHz.

110

! 2)

CONNECT A PAIR OF CABLES FROM 5363B PROBE OUTPUTS TO

120

1

COUNTER START

&

STOP INPUTS

(NOTE:

THE

SAME CABLES MUST BE USED

LATER

TO

DO

MEASUREMENTS

130

1

140

!

FOR CALIBRATION TO BE VALID)

150

!

3)

PROBES SHOULD BE PRE-CALIBRATED FOR

TRIGGER-LEVEL

ACCURACY

IN ACCORDANCE WITH HP5363B

MANUAL

(INSERT PROBES TO 5363 AND PUSH

160

1

170

1

SWITCH TO "LEVEL" MOMENTARILY)

INSERT PROBES

180

1

4)

TERMINATE CALIBRATOR OUTPUTS A

&

B

WITH

50 oh

AND

A AND B WITH TWO TEE'S; (MUST

HAVE

50 ohm SOURCE IF NO 50 ohm

LOAD)

190

1

200

1

5) SET COUNTER TO SEPERATE; DC/50 ohms/Xl/PRESET to BOTH

CHANNELS

210

1

6)

CONNECT 5363 TRIG LEVEL OUTPUT (A or B) TO CALIBRATOR OFFSET INPUT

220

!

7) HPIB ADDRESSES: COUNTER-707, CALIBRATOR-705, PROBE-704

230

1

240

!

INITIALIZATION

lHPIB ADDRESSES

250 Ctr-707

260 Cal=705

270 Prober704

280 Ps=l.E+12

1

CONSTANT

290 OUTPUT CtrtWFNln

300 INPUT "TYPE IN OFFSET

(-9.99 TO 9.99 volts

@

Hi

2;

-2 TO +2 V

@

50

OHMS)",V

310 OUTPUT Ctr; wST611 !CLEARS

ANY

PREVIOUS REFERENCE

!A TRICK TO GET LEADING 0

320

LevelS=VAL$(1000+INT(ABS(1OO*V)+.S))

330 Le~elS=~+~&Level$[2,4] lTRADE LEADING "1" FOR

H+n

340 IF

V

THEN

Le~elS=~-~&Level$[2,4] lTRADE

n+n

FOR

"-"

350 OUTPUT

P~O~~;~GA~&L~V~~S&~USRB~~&L~V~~$&~US~!SET

TRIG

LEVEL

(2-PROBE CAL)

360 OUTPUT Ctr;

"FN2TRTAO.

OOtg

!SET COUNTER TO SUIT PROBE OUTPUTS

370 OUTPUT Ctr;

380 OUTPUT Ctr;wSRSAISO1w

390 OUTPUT Ctr; "FN4GT2MRn

!

MEASURE FREQUENCY

(

PERIOD)

400 ENTER Ctr:Per

4 10 OUTPUT ~tr

;

wFN1~~1~~3~~2~

!SET COUNTER FOR T.I.

~~~~2MRn

!DUMMY READ TO CLEAR PIPELINE

420 ENTER CtriPfff

430

1

440

!

450 DISP TIME-INTERVAL CALIBRATION IN PROGRESS"

460 OUTPUT

CaltwBln

470 OUTPUT CtrtWMRw

480 Tl=FNTi(Per,Ctr)

!

+ +

SLOPE DIRECT

490 OUTPUT P~O~~;~GADSRBDS~

500 OUTPUT Ctr;"MRn

510 T2-FNTi (Per, Ctr)

1

SLOPE DIRECT

520 OUTPUT Cal;wB2n

530 WAIT -004

540 OUTPUT Ctr;wMRw

550 T3=FNTi(Per,Ctr)

1

SLOPE SWAPPED

560 OUTPUT ProberNGAUSRBUSw

570 OUTPUT Ctr;WRn

580 TQ=FNTi(Per,Ctr)

1

+ +

SLOPE SWAPPED

590 OUTPUT CaltWB3"

600

WAIT

.004

6 10 OUTPUT Probe

t

"GAUSRBDS

620 OUTPUT Ctr; "MRn

630 TS=FNTf(Per,Ctr)

1

+

SLOPE DIRECT (Page 3-14)

640 OUTPVT P~O~~:~GADSF~BUS~

650 OUTPUT CtrtmMRn

660 Tb-FNTi(Per,Ctr)

1

+

SIDPE

DIRECT

-

-

- -

-

-

www.

'

670 OUTPUT CaltnB4n

680 WAIT .004

690 OUTPUT CtrtnMRn

700 ~7=FNTi(Per,Ctr)

!

+

SLOPE SWAPPED

710 OUTPUT Probe;"GAUSRBDSw

720 OUTPUT Ctr;nMRn

730 T8=F~Ti(Per,Ctr)

1

+

SLOPE SWAPPED

END

TIME-INTERVAL

CALIBRATION

740

!

750

!

760

i

770 DISP

WIDTH,

RISE/FALL SKEW CALIBRATION IN PROGRESSn

780 !SINGLE PROBE

MEASUREMENTS

(PROBE-A)

790 !FOR PROBE-B CALIBRATION, REPLACE

A

BY B IN PROBE C0MMAM)S IN THIS

SECTION

800 !FOR EXAMPLEfWGAUSRADSvv IS CHANGED TO "GBUSRBDSn

810 !IF NOTHING ELSE IS CHANGED, CALIBRATOR SHOULD BE ON B4

820 OUTPUT Ctr;"ARlMR"

830 OUTPUT Probe;"GAUSRADSn

840 WAIT .004

!

PROBE-A

CAL

(ONE-PROBE)

850 OUTPUT CtrfnMRn

860 ENTER CtrrW4

1

+

WIOm

SWAPPED

870 OUTPUT ProbetnGADSRAUSw

880 OUTPUT Ctr;vvMRn

890

ENTER

~trt~3

1

+

WIDTX SWAPPED

900 OUTPUT Cal;vtB3w

910 WAIT .004

920 OUTPUT CtrtnMRn

930 ENTER CtrrW2

!

+

WIDTH DIRECT

940 OUTPUT ProbetWGAUSRADSw

950 OUTPUT Ctr

;

"MRtv

960 ENTER Ctr;Wl

!

+

WIDTH DIRECT

970 OUTPUT Cal tffBln

980 WAIT .004

990

OUTPUT

ctrtNm~mW

1000 OUTPUT Probe;"GAUSRAUSW

1010 OUTPUT Ctr; vfMRgv

1020 R=FNTi(Per,Ctr)

!

+

+

PROBE-A (RISE)

1030 OUTPUT P~O~~;~GADSRADS~

1040 OUTPUT Ctr:vtKRw

1050 F=FNTi(Per,Ctr)

!

PROBE-A (FAU)

10601 END WIDTH RISE/FAU CALIBRATION

1070!

1080!

1090 OUTPUT ProbetwGAUSRBUSn

IBACX TO 2-PROBES TO

TIIERMO

EQUILIZE

1100 OUTPUT Ctr;IvMDln

fRETURN

COUNTER TO CYCLING

MODE

11101

1120

!

BEGIN CALCULATE CALIBRATION CONSTANTS

1130 Cpp=.S*(Tl+T4)

1140 Cnn-.5*(T2+T3)

1150 Cpn=.S*(TS+T8)

1160 Cnp-.

5*

(T6+T7)

1170 IF Wl>Per

THEN

Wl=Wl-Per

1180 IF W2>Per THEN W2=W2-Per

1190 IF W3>Per THEN W3=W3-Per

1200

IF

W4,Per THEN W4-W4-Per

1210 Wpn=.S*(Wl+W4-Per)

1220 Wnp=.

S*

(W2+W3-Per)

1230

1

END

CALCULATE

CALIBRATION CONSTANTS

1240

!

1250

!

1260

1

BEGIN CALCVLATE CONSISTENCY PARAMETERS

(Page

3-15)

1270

Pp.

S*

(Tl-T4)

1280 Nn=.S*(TZ-T3)

1290 Pnl=.S*(TS-T8)

1300 Pn2=.5*(T6-T7)

1310

Wpnl=W1-.5*Per-.25*(Wl-W2+w3-W4)

1320

Wpn2=W4-.5*Per+.25*(Wl-w2+W3-W4)

-

-

-

-

-

-

- -

1330

Wnpl=W2-.5*Per+.25*(Wl-W2+W3-W4)

1340

Wnp2=W3-.5*Per-.25*(Wl-W2+W3-W4)

1350

!

END

CALCULATE

CONSISTENCY PARAMETERS

1360

!

1370

!

1380

!

1390 PRINT

w

CALIBRATION CONSTANTS:w

1400 PRINT

"

(TO BE SUBTRACTED FROM COUNTER READINGS)"

1410 Ps=l.E+12

1420 PRINT USING

"""

TIME INTERVAL

+

TO

+

"",

DDDDDD, psnww;Cpp*Ps

1430 PRINT USING

www

TIME INTERVAL TO

"",

DDDDDD,

uw

psnww;Cnn*Ps

1440 PRINT USING

wwn

TIME INTERVAL

+

TO

"",

DDDDDD,

nw

pswwn;Cpn*Ps

1450 PRINT USING

www

TIME INTERVAL TO

+

"",

DDDDDD, psnww;Cnp*Ps

1460 PRINT USING

www

PROBE-A WIDTH

+

TO

,

DDDDDD,

ww

psnwn;Wpn*Ps

1470 PRINT USING

www

PROBE-A WIDTH TO

+

,

DDDDDD,

ww

psnww;Wnp*Ps

1480 PRINT USING

"""

PROBE-A RISE-TIME

SKEW

"",

DDDDDD,

""

psnnw;R*Ps

1490 PRINT USING

"""

PROBE-A FALL-TIME SKEW

"",

DDDDDD,

ww

psW*'";F*Ps

1500 FreqrINT(1.E-6/Per+.5)

1510 PRINT "CALIBRATION PERFORMED AT ";Freq;"

MHz

@

OFFSET

=

w;V;w voltsw

1520 PRINT nCONSISTENCY:f*

1530 PRINT "TI

++,

--:

f';INT( (Pp-Nn)

*.

~*Ps+. 5)

;

"PS"

1540 PRINT **TI

+-,-+:

*';INT((Pnl-Pn2)*.5*Ps+.5)

;@'psW

1550 PRINT wWIDTH

:

w;INT((Wpnl-Wpn2)*Ps*.5+.5);"ps"

1560

1

"WIDTH

-+:

";

INT(

(Wnpl-Wnp2)

*.

5*Ps+.

5)

;

wpslf

1570 PRINT

'@"

1580 DISP "END CALIBRATIONff

1590 END

1600

!

1610

!

1620 DEF FNTi() !RETURNS

T.I.

1630

ENTER

ctr;T

1640 IF ABS (T)<.S*P

THEN

1670

!WITH PROPER PERIOD COMPLEMENT

16 50 OUTPUT Ctr

:

"PCMRf9

1660 ENTER CtrtT

1670

RETURN T

1680 FNEND

- -

-

-

-

-

(Page

3-16)

www.

THEORY

OF

OPERATION

4-1. INTRODUCTION

This section explains the basic operation of the

HP

J06-59992A

Time Inter-

val Calibrator.

4-2. TIME INTERVAL CALIBRATOR

4-3. A1

VHF

Switch Control Board

The majority of the components on the A1 board make possible the

operation of the Time Interval Calibrator. In addition, the board contains

HP-IB

the Power Supply, which provides +I

-12V, and

Logic to drive the Switch Board.

2V,

+SV,

and the Relay SeIect

A2

4-4. A2

VHF

Switch

Board

This

board contains offset voltage circuitry, the relays, the two power-

splitters, and the

HP-IB

address switch.

4-5. Theory of Operatlon

4-6.

HP-16

COMMAND OPERATlON

The Hewlett-Packard Time Interval Calibrator can

be

operated either

manually or remotely using

commands. The commands

"B

1'B311, and

"B4"

correspond to the front panel switches

HP-IB

I",

"82",

#

1,

#2,#3,

and

64,

respectively.

Page

4-1.

Theory

of

Operation

HP

J06-59992A

Time Interval Calibrator

B1

INPUT

B2

1-1

OUTPUT A

'

SPLITTER P2

Zero

OUTPUT B

OUTPUT

A

OUTPUT B

OUTPUT

A

OUTPUT B

OUTPUT

A

OUTPUT

B

In-phase

B3

INPUT

B4

171

180

eg

SPLITTER P2

In-phase/Swap

SPLITTER N2

Out-of-phase

Out-of-phase/Swap

Figure

4-1. HP-1B

Command

Swnmary.

4-7.

INPUT

SIGNAL CONVERSION

The zero degree power-splitter divides the input signal into two nearly in-

phase output signals, PI and P2 Command "Bl" routes the input signal from

Pl to Output

A

and P2 to Output B;

'732"

routes the input from P1 to Output

B

and P2 to Output

A

Similarly, the 180-degree power-splitter divides the

input into two nearly out-of -phase signals, N 1 and

N2.

Command

"B3"

routes the input signal from N

1

to Output A and N2 to Output

8;

'%4"

routes

the input from

N

1

to Output

B

and N2 to Output

A

Refer to Figure 4- 1

for a diagram illustrating the effect of the HP-IB commands.

The commands "Bl

-B4", (or switches 1-4 if

manually

operated), result in four

binary states defined by the two bits arriving on AD4 pin

4 and pin

6.

The

bit from pin

4,

via buffers in A2U 1 energizes the appropriate relays A2K

1

and A2K2, routing the incoming signal from A2J1 to the desired power-

splitter. The outputs of the selected splitter

are

fed to A2K3 where they are

and B directly, or reversed through

a

cross-over K3

connected to Outputs

A

relay arrangement. Note that the input signal to the splitters and the output

signals from the splitters are ac-coupled via blocking capacitors A2C 1, C8,

and C9. Table

4-

1 summarizes the J06-59992A operation.

Page

4-2

www.

HP

J06-5999tA

Time Interval Calibrator

.Theory of Operation

Table

4-1.

Relay

and

Swifch

Operation

of

HP J06-59992A.

Switch

HP-IB

(man) (remote)

1

Splitter

54

54

pin

4 pin

6

used

..................................................................

..................................................................

B

1

82

Kt

K2

K3

Output

Output

A

B

coila

H

H

L

H

H

L

2

3

4

83

84

L

L

T2

T2

T

1

T

1

OFF OFF

ON

OFF

OFF OFF

ON

ON

ON

ON

OFF

ON

PI

P2

Nf

N

2

.

P2

P

1

N2

N

1

4-8.

CALIBRATION WITH AN

OFFSET

VOLTAGE

When time interval calibration is to be done at a particular trigger level volt-

age, the calibrator

A

and

B

output signals must

be

biased to the same voltage

to simulate the signal to

be

measured.

This is accomplished by applying a

voltage equal to the desired trigger-level to connector

A2J3

on

the

rear panel

of the

J06-59992A.

A

feedback circuit made up of operational amplifiers

(A2U3

and

U4)

and

current sources

(A2U2

and

US)

make it possible to bias both the

A

and

B

calibrator outputs to match a dc voltage appearing at the Offset Voltage In-

put,

AZ13. This

"offset" voltage appears on the

"+"

input of operational

amplifier

A2U3.

The

"-"

input of

U3

senses the dc voltage of the applied

bias voltage signal on the output side of blocking capacitor C8, via

R

1 3. The

difference voltage is amplified, filtered, and controls the cumnt sources

A2U2A

and

U2B

with outputs on pins

1

and 7. The feedback loop es-

tablishes the output voltage at C8 to

be

equal to the input offset voltage.

A

maximum of

40

mA

can be sourced by

A2U2B

or sunk

by

U2A

before

saturation. Similarly, voltage at C9 is sensed by

R

14 and fed back to

A2U4.

Current sources

USC

and

USD

ensure the voltage at C9 will

be

equal to the

input offset voltage. Through relay K3, voltages at C8 and

C9

are connected

to outputs

A

and

B.

With this arrangement, Outputs

A

and

B

can

be

biased up to

+/-

2

volts for

SO-ohm

loads

or

+/-

10 volts for high impedance loads. In the absence of

any input offset voltage,

A2R7

establishes the "input" voltage

as

ground, and

no bias will appear at the outputs.

Page

4-3

HP

106-59992A

Time Interval Calibrator

Theory of Operation

4-9.

EXAMPLE OF A NON-ZERO TRIGGER LEVEL MEASUREMENT

Signal to

be

measured:

10 MHz, 1. OV pulses with mid-pulse at 0. SV.

Signal from the pulse generator: 10

MHz,

1.5V square wave

Signal from the time interval calibrator: 10 MHz, 1. OV square wave, with a

0. SV offset and an approximate

S0'A

duty cycle.

Source of Offset Voltage:

370A/B COUNTER AND THE HP 5 36 38 TIME INTERVAL

FOR THE HP 5

PROBES COMBINATION

Trigger Level Output and connect it to the Offset Voltage Input of the

J06- S9992A (user response to software prompt sets the voltage level from the

probes). The 5370A/B trigger level is set to 0. OOV.

5363B

Time Interval Probes--Take the 0.5V from the rear panel START

FOR

THE

HP 5370A/B COUNTER WITHOUT

THE

TIME INTERVAL

PROBES

DC

Voltage Source--Connect 0.

SV

from the dc voltage source to the Offset

Voltage Input of the J06-S9992A.

Set the S370A/B to a 0. SOV trigger level

for both the START

and

STOP channels (user response to software prompt

sets

the trigger level).

Page

4-4

HP

106-59992A

Time Interval Calibrator

Theory of Operation

4-10.

Functional Block Diagram Theory

Figure

Time Interval Calibrator. The J06-59992A consists of

4-2 illustrates the functional block diagram for the HP J06-59992A

six

mapr circuit

groups: Handshake Logic, Bus Logic, Decode Logic, Remote/Local Logic, Local

Lockout Logic, and Relay Select Logic.

4-11. HANDSHAKE

LOGIC

The three-wire handshake lines to the Handshake Logic circuits synchronize

the operation of the J06- 59992A. The lines are: Ready for Data (RFD),

Data

Valid (DAV),

and Data Accepted (DAC). The handshake logic processes the

DAV signal and produces the Handshake Out (HSOUT) signal for use by the

Bus Logic and the Local Lockout Logic. The DAV signal and the Handshake

'

Enable (HSENABLE) signal combine to output the RFD and DAC signals on

the bus. The basic purposes of this logic is to signal the other J06-59992A

circuits that the Data Input/Output (Dl01 lines contain a character for pos-

sible processing and to interface the circuits to the HP Interface Bus three-

wire handshake system.

4-12.

BUS

LOGIC

The Bus Logic accepts inputs from the DIO lines and the Multiple Response

Enable

(MRE)

signal from the Interface Bus.

with the HSOUT signal, enable the Remote/Local Logic and the Local

These inputs, in conjunction

Loc-

kout Logic. In addition, the Bus Logic processes the relay state codes and

relay select codes present on the DIO lines, and combines them with the

HSOUT and REMOTE signals to output the CLK and CLK signals to the

Decode Logic.

The Bus Logic serves the additional function, in conjunction with the

Remote/Local Logic, of placing the J06-59992A into remote operation or

taking it out of remote operation on command from instructions on the In-

terface Bus

4-13. DECODE LOGIC

The Decode Logic receives the CLK and CLK signals from the Bus Logic and

receives relay select codes and relay state codes from the DIO lines. These

signals are decoded and output to the Relay Select Logic to select switch

B

and to connect switch B to one of two power-splitters and a switch-over

relay. The

CLK

B

signal selects switch B, BIT1 selects power-splitter A2T1

or T2, and BIT2 selects the straight-through or cross-over path through relay

A2K3.

Page

4-5

-

*5v

LOCAL RESET SWITCH

F---

REMOTEILOCAL LOGIC "REMOTE"

I

REN

B

L

0101-7

7

-

,

E

LOCAL

LOCKOUT

W

.

-#&

t-

t

(C

*

7

',

CONTROL LINES

BIT 1

TO RELAYS

BIT 2

RELAY

-

DECODE

'

SELECT

LOGIC

.)

LOGIC

CLKB

CONTROL LINES

TO INDICATORS

B

DAV

-

RFD

-

-

HSENABLE

FRONT PANEL PUSHBUTTON

DAC

t--

-

HANDSHAKE

HSOUT

LOGIC

-

BUS

SWITCHES

LOGIC

MRE

e

4

BCL

ADDRESS SWITCHES

/I

1

L

I

HP

306-59992A

Time

Interval Calibrator

Theory of Operation

4-14. REMOTE/LOCAL LOGIC

The Remote/Local Logic receives the Remote Enable (REN) signal from the

Interface Bus along with the ENABLE and ADDR signals from the Bus Logic

to produce the REMOTE signal. This action put. the J06-59992A in remote

operation When the REMOTE signal

is

removed (by closing the

LOCAL/RESET switch or setting REN high) the J06-59992A is taken out of

remote operation. The LOCAL/RESET switch is disabled and cannot take

the J06-59992A out of remote operation when the Local Lockout (LLO)

sig-

nal is received from the Local Lockout Logic.

When the

REMOTE

indicator

is