HP 5304A Operating And Service Manual

OPERATING

AND

SERVICE MANUAL

TIMER/COUNTER

5304A

w.0«

(iOtl

HEWLETT M PACKARD

CERTIFICATION

The

Hewlett-Packard Company certifies that this instrument

was

thoroughly tested

and

inspected

and

found

to

meet

its

published

specifications when

it was

shipped from

the

factory.

The

Hewlett-

Packard Company further certifies that

its

calibration measure-

ments

are

traceable

to the U.S.

National Bureau

of

Standards

to

the

extent allowed

by the

Bureau's calibration facility.

WARRANTY

AND

ASSISTANCE

This Hewlett-Packard product

is

warranted against defects

in

materials

and

workmanship. This warranty applies

for one

year

from

the

date

of

delivery,

or, in the

case

of

certain major

com-

ponents listed

in the

manual,

for the

specified period.

We

will repair

or

replace products which prove

to be

defective

during

the

warranty period provided they

are

returned

to

Hewlett-

Packard.

No

other warranty

is

expressed

or

implied.

We are not

liable

for

consequential damages.

Service contracts

or

customer assistance agreements

are

available

for

Hewlett-Packard products that require maintenance

and

repair

on-site.

For any

assistance, contact your nearest Hewlett-Packard Sales

and

Service Office.

III' M< >1

>EL5;MMA TIMER colINTER

Reeord

of

Revisions (Manual Change I'ages)

REVISION

NUMBER

DATE

ISSUED

DATE

INSERTED

INSERTED

BY

HI'

MODEL :">;{(

M A TIM E R CO

IJNTK

K

Record

of

Revisions (Manual Change Pages)

REVISION

NUMBER

DATE

ISSUED

DATE

INSERTED

INSERTED

BY

I

i

t

I

I

SECTION

IX D

TIMER/COUNTER

5304A

SERIAL PREFIX: 1212A00467

This section applies directly

to HP

Model f>H()lA, Timer

Counters having serial prefix number l2P2A004ti7,

and

must

he

inserted into

the

5300A Measuring System M uiual.

NEWER INSTRUMENTS

This Section with enclosed "Manual Changes Pages"
applies directly

to HP

Model 5.'U)4A Timer Counters having

prefix numbers above 1212A00467.

OLDER INSTRUMENTS

Changes re(|uired

to

back-date this Section

for

older instru-

ments

arc in

Section

IX I),

Subsection

VII.

Copyright HEWLETT-PACKARD COMPANY

1973

5301

STEVENS CREEK BLVD.. SANTA CLARA. CALIF. 95050

Printed:

AUG 1973

HP

PART

NO.

Jjjf

MANUAL 05304-90006 HEWLETT

M,

PACKARD

Model 5304

A

Table

of

Contents

TABLE

OF

CONTENTS

Section i'age

IX I)

5304A Timer/Counter

Subsection

I

GENERAL INFORMATION 91)1-1

91)-1-1. Introduction 9D-1-1

91)-1-2. Description 9D-1-1

91)-1-4. Purpose

and Use of

Section

IX I)

91)-1-1

91)1-6. Instrument Identification 91)1-1

91)1-8. Manual Changes

and

Options 91)1-1

II

INSTALLATION 9D-2-1

9D-2-1. Unpacking

and

Inspection 9D-2-1

9D-2-3. Storage

and

Shipment 9D-2-1

9D-2-5. Installation

and

Removal

of

Plug-On 9D-2-1

9D-2-8. Portable Operation 9D-2-1

III

OPERATION 9D-3-1

9D-3-1. Operating Information

91) 3-1

IV

THEORY

OF

OPERATION 9D-4-1
9D-4-1. Introduction 9D-4-1
9D-4-4. Input Amplifiers 9D-4-1

V

MAINTENANCE 9D-5-1

9D-5-1. Introduction 9D-5-1
9D-5-3. Recommended Test Equipment 9D-5-1
9D-5-5. Instrument Access 9D-5-1
9D-5-7. Periodic Maintenance 9D-5-1
9D-5-9. Maintenance

and

Repair 9D-5-1
9D-5-13. Instrument Troubleshooting 9D-5-1
9D-5-16.

DC

Balance Adjustment 9D-5-3

VI

REPLACEABLE PARTS 9D-6-1

9D-6-1. Introduction 9D-6-1
9I)-o-3. Ordering Information 9D-6-1

VII

MANUAL CHANGES

AND

OPTIONS 9D-7-1
9D-7-1. Manual Changes 9D-7-1
9D-7-3. Newer Instruments 9D-7-1
9D-7-5. Older Instruments 9D-7-1
9D-7-7. Options 9D-7-1

VIII CIRCUIT DIAGRAMS

91) 8-1

9D-8-1. General 9D-8-1

ii

Model 5304A

List

of

Figures

List

of

Tables

LIST

OF

FIGURES

Figure Page

91)1-1. 5304A Timer/Counter 9D-1-0

9D-3-1 Signal Conditioning Using Attenuator, Level

and

Slope Controls 9D-3-1

9D-3-2. Front-Panel Controls

and

Connectors 9D-3-2
9D-3-3. Rear-Panel Connectors 9D-3-4
9D-3-4. Making Self-Check Measurement 9D-3-5
9D-3-5. Making Frequency A Measurements 9D-3-H
9D-3-6. Making Period Average Measurements 9D-3-7
9D-3-7. Making Time Interval Measurements 9D-3-8
9D-3-8. Totalizing 9D-3-10

9D-5-1. Separation Procedure 9D-5-2
9D-5-2. Frequency A Troubleshooting Diagram 9D-5-5
9D-5-3. Period Average A Troubleshooting Diagram 9D-5-7
9D-5-4. Time Interval Troubleshooting Diagram 9D-3-11
9D-5-5. Open/Close Troubleshooting Diagram 9D-5-13
9D-5-6. ('heck Troubleshooting Diagram 9D-5-I5

9D-8-1.

Al

Time Interval Board Assembly,

A2

Attenuator Board Assembly 9D-8-5

LIST

OF

TABLES

1

able Page

9D-1-1. 5304A Timer/Counter Specifications 9D-1-2

9D-5-1. In-Cabinet Performance Checks 9D-5-16

9D-6-1. Replaceable Parts 9D-6-2
9D-6-2. Manufacturers Code List 9D-6-5

9D-8-1. Instrument Interconnection List 9D-8-2

in

Model 5304A
General Information

Figure 91)-1-1. 5304A Timer/Counter

FREQ

A

:»::i :t w

^

XIOO ® PSET^»*»

-

AUTO

ATTEN

xioo

ai oc ^

w

5304A TIMER/COUNTER

OPEN/CLOSE

A

9D-1-0

Model 5.'{(MA

(

ieneral Informatinn

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

I

GENERAL INFORMATION

9D-1-1. INTRODUCTION

9D-1-2. Description

9D-1-3.

The

Hewlett-Packard Model 5304A Timer

Counter, when plugged onto

an HP

Model 5300A

Measuring System,

is

capable

of:

Measuring

fre-

quencies

up to 10 MHz,

Time Interval measurements

from

500

nsec

to

10,000 seconds, Period Average

over a range

of 10 Hz to 1 MHz, and

Totalizing.

The

electrical

and

mechanical specifications

are

listed

in

Table 9D-1-1.

9D-1-4. Purpose

and Use of

Section

IX D

9D-1-5. Section

IX I)

contains

the

documentation

necessary

to

operate, maintain,

and

repair

the HP

Model 5304A Timer Counter plug-on. Also included

are

parts lists, component locators,

and

schematics.

This information

is

intended

to be

inserted into

the

5300A Measuring System manual

as

part

of

Section

IX of

that manual.

9D-1-6. INSTRUMENT IDENTIFICATION

91)1 -7.

Hewlett-Packard uses a two-section, nine-

digit serial number (0000A00000) mounted

on the

rear panel

to

identify

the

instrument.

The

first four

digits

are the

serial prefix

and the

last five digits

refer

to the

specific instrument.

If the

serial prefix

on

your instrument differs from that listed

on the

title page

of

this section, there

are

differences

between

the

manual

and

your instrument. Iiower

serial prefixes

are

documented

in

Section

IX I),

Subsection

VII and

higher serial prefixes

are

covered

by a

manual change sheet included with

the

manual.

9D-1-8. Manual Changes

and

Options

9D-1-9.

The

title page lists

the

serial prefix number

to

which this information directly applies.

If the

serial prefix

is

different from

the one

listed,

a

change sheet

is

included describing

the

required

changes.

If

this change sheet

is

missing,

the

infor-

mation

can be

supplied

by any

Hewlett-Packard

Sales

and

Service office listed

in

Section

VI of the

5300A Measuring System Manual. Options

are

listed

in

Section

IX I),

Subsection

VII.

9D I I

Model 5304A

General Information

Table 91)1-1. 5304 A Timer/Counter Specifications

INPUT CHANNELS

A ANI) B

Range:

DC

coupled;

0 to 10 MHz.

AC

coupled;

100 Hz to 10 MHz.

Sensitivity (min):

25 mV rms

sine wave

to I MHz. 50 mV rms

sine wave

to 10

MHz. 150 mV p-p

pulse

at

minimum

pulse width,

40

nsec. Sensitivity

can be

decreased

by 10 or 100

times using

ATTENUATOR switch.

Impedance:

1 Mil

shunted

by

less than

30 pK

Overload Protection:

250 V rms on Xl()

and

XI00 attenuator settings.

On XI

attenuator setting

120 V rms up to 1 kHz,

decreasing

to 10 V rms at 10 MHz.

Trigger Level: PRESET position centers

triggering about 0 volts

±25 mV, or con-

tinuously variable over

the

range

of 1 V to

+

1 V

times attenuator settings.

Slope: Independent selection

of

triggering

on

positive

or

negative slope.

Channel Inputs: Common

or

separate lines.

Gate Output: Rear panel

BNC. TTL low

level while gate

is

open.

May be

used

to

intensity modulate

an HP

oscilloscope.

TIME INTERVAL

Range:

500

nsec

to 10 • sec.

Input: Channels

A and B; can be

common

or

separate

Overload: Maximum recommended levels

for

pulse signals

is 2 V p-p.

Clipping occurs

at 3 V p-p.

Resolution:

100

nsec

to 10 ms in

decade

steps.

Accuracy:

+1

count + time base accuracy

+

trigger error.*

Display:

fjs, ms, or s

(seconds) with positioned

decimal point.

Time Interval Holdoff: Front panel

con­centric knob which inserts variable delay
of

approximately

100

/jsec

to 100

msec

be-

tween START (Channel

A) and

enabling

STOP (Channel

B); may be

disabled. Elec-

trical inputs during delay time

are

ignored.

Delay

may be

digitally measured

in

CHECK

position. Delay Output: rear panel

BNC.

TTL low

level during delay time.

May be

used

to

intensity modulate

an HP

oscilloscope.

PERIOD AVERAGE

Range:

10 Hz to 1 MHz.

Input: Channel

A.

Period Averaged:

1 to 10'

automatically

selected

for

maximum resolution.

Frequency Counted:

10 MHz.

Accuracy: +1

count + time base accuracy

+

trigger error.**

Display:

/JS, ms

with positioned decimal point.

FREQUENCY

Range:

0 to 10 MHz.

Input: Channel

A.

Gate Times: Manually selected

0.1, 1, or 10

seconds. AUTO position selects gate time

to

fill display

for

maximum resolution with-

in a

1-second measurement time.

Accuracy:

+1

count + time base accuracy.

Display:

Hz, kHz, and MHz

with positioned

decimal point.

OPEN/CLOSE (Totalizing)

Range:

10 MHz

maximum.

Input: Channel

A

Function: Input signal totalized while gate

open. Opening

and

closing

of

gate initiated

by

front panel pushbutton switch.

GENERAL

Check: Inserts internal

10 MHz

reference

frequency into Channels

A and B.

Time

Interval Holdoff

may be

digitally measured

by

switching

to

CHECK

and

TIME

IN

TERVAL positions.

Operating Temperature:

0° to

50°C.

Power Requirements: Including 5300A

mainframe, nominally

10

watts. Minimum

of 3

hours operation (typically

5 hrs) at 20 C

to

30°C operating

and

charging temperatures.

Weight:

Net, 1 lb (0.9 kg).

Shipping,

314

lbs (1.5 kg).

"For any

waveshape, trigger error

is

less than

±

0.005
Signal Slope

(V/ ps) /js

**Trigger error

is

less than

±0.3% of one

period, i periods averaged

for

signal with

40 dB or

better signal-to-noise ratio.

91)1-2

Model 5304

A

Installation

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

II

INSTALLATION

9D-2-1. UNPACKING

AND

INSPECTION

9D-2-2.

If the

shipping carton

is

damaged

ask

that

the

carrier's agent

be

present when

the

instrument

is

unpacked. Inspect

the

instruments

for

damage

such

as

scratches, dents, broken knobs,

etc. If the

instrument

is

damaged

or

fails

to

meet performance

tests when used with

the

5300A Measuring System

notify

the

carrier

and the

nearest Hewlett-Packard

Sales

and

Service office immediately. Performance

check procedures

are

located

in

Section

IX D-5,

and

Sales

and

Service offices

are

listed

in

Section

VI

of the

53(H)A portion

of the

manual. Retain

the

shipping carton

and the

padding material

for the

earner's inspection.

The

Sales

and

Service office

will arrange

for the

repair

or

replacement

of the

instrument without waiting

for the

claim against

the

carrier

to be

settled.

9D-2-3. STORAGE

AND

SHIPMENT

9D-2-4. PACKAGING.

To

protect valuable electronic

equipment during storage

or

shipment always

use

the

best packaging methods available. Your Hewlett-

Packard Sales

and

Service office

can

provide

packaging material such

as

that used

for

original

factory packaging. Contract packaging companies

in

many cities

can

provide dependable customer

packaging

on

short notice. Here

is one

recommended

packaging method:

a. The

original container

is a

corrugated card-

board

box

with

200 lbs.

burst test

(HP No.

9211-1620).

The

instrument

is

secured

and

protected, while

in

the box by a top and

bottom molded form

of

polystyrene foam

(HP No.

9220-1545). Also included

with

the

instrument

is a

plastic dust-protection cover

HP

Part

No.

05300-80004.

9D-2-5. INSTALLATION

ANI)

REMOVAL

OF

PLUG-ON

9I)-2-(>.

The

5304A Timer/Counter must

be

used with

a

mating 5300A Measuring System before

any

measurements

can be

made.

To

mate

the

5304A

Timer/Counter with

the

53(H)A Measuring System,

see

Figure

2-1 and

Paragraph

2-1 of the

5300A portion

of the

manual.

9D-2-7. ENVIRONMENT. Conditions during
storage

and

shipment should

be

normally limited

as

follows:

a.

Maximum altitude: 25,000 feet

b.

Minimum temperature: -40°F ( 40°C).

c.

Maximum temperature: +167"F(+75°C).

9D-2-8. PORTABLE OPERATION

9D-2-9.

The use of the HP

Model

531 OA

Battery

Pack enables

the

5300A Measuring System

and

5304

A

Timer Counter

to be

used

in

areas removed from

ac

power sources.

The 531 OA

Battery Pack provides

a

minimum

of 3

hours operation (typically 5 hours)

at

20°C

to

30°C operating

and

charging temperature.

Tables

1-2 and 1-4 of

5300A portion

of the

manual

list

the HP

5310A Battery Pack

as an

available

accessory. Documentation

on the 531 OA is

also

included

in

Section

IV

through VIII

ol the

5300A

portion

of the

manual.

To

prepare

the

5300A 5304A

for

portable operation, refer

to

Paragraph

2-15 and

Figure

2-2,

steps

a to c of

5300A portion

of

manual.

9D-2-1

OPERATION

(

j

Model 5304A

Operation

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

III

OPERATION

9D-3-1. OPERATING INFORMATION

9D-3-2.

The

5300A/5304A Timer/Counter measures

frequencies

up to 10 MHz,

period average

to 1 MHz,

time interval from

500

nsec

to

10,000 seconds;

or

totalizes input signals.

Figure 9D-3-1. Signal Conditioning Using

Attenuator, Level

and

Slope Controls

TRIGGER
VOLTAGE

NOTE

?

RECOVERY

VOLTAGE

+

SLOPE

0

LEVEL

PSET

HYSTERESIS

(NOTE

I)

-

SLOPE

I.

HYSTERESIS (NOISE REJECTION)

VO.

TAGE

IS

CONSTANT

FOR

EACH ATTENUATOR SETTING

AND

DOES

NOT

VARY WITH

TRIGGER LEVEL

2

THIS ALLOWS ZERO VOLTS TRIGGERING WITH GOOD NOISE

REJECTION

3

ATTENUATOR:

xi,

xio.xioo CHANGES TRIGGER LEVEL

AND

HYSTERESIS VOLTAGES

BY

FACTORS

OF

I.IO.IOO

9D-3-3. There

are

four basic signal conditioning

controls used

in

Channel

A or

Channel

B (the

effect

of

these controls

is

shown

in

Figure 9D-3-1).

These

are:

a.

ATTEN switches

for

Channel

A and B.

b.

SLOPE switches

for

Channel

A and B.

c.

LEVEL controls

for

Channel

A and B.

d.

AC-DC switches

for

Channel

A and B.

9D-3-4. ATTEN.

XI, X10,

XI00 switches (both

Channels. Large amplitude signals

can be

attenuated

by

using

the

ATTEN switches. Setting

the

attenuator

switches increases

the

trigger levels

and the

hysteresis voltages

by

factors

of 1, 10, 100. If

input

signal levels

are

unknown,

the

initial measurements

should

be

made with

the

attenuator switches

set

to

XI00.

The

attenuator settings

are

then reduced

until a stable, useable measurement

is

obtained.

9D-3-5. SLOPE Switches (both Channels).

The

slope switches allow

the

selection

of

triggering

on

the

positive

(+) or

negative

(-)

slope

of the

input

signals

(see

Figure 9D-3-1).

9D-3-6. LEVEL Controls (both Channels).

The

level controls allow adjustment

of the

triggering

point

on the

input signal waveform. With

the

LEVEL

controls

set to

PSET

or "0",

triggering

is

centered

about zero volts.

The

voltage range over which

triggering

may be set is -1

volt

to +1

volt times

the

ATTEN switch settings

(±1 V to +100 V).

9D-3-7. AC-DC Switches (both Channels).

The

AC-DC switches select

ac or dc

coupling.

In AC

position

and

PSET, triggering

is

centered about

ac-zero,

and dc

components

on the

signal have

no

effect.

In DC

position

and

PSET, triggering

is

centered about 0 volts

dc on the

signal.

9D-3-1

Model 5304A
Operation

Figure 9D-3-2. Front-Panel Controls

and

Connectors

T.I. A TO B /

FREQ

A

PEP,

10 m« v

AVO/A

\

XlOO

PUT

AYTEN

LEVE

.1 ms

00^ DO

Kg]

5304A TII/ER/COUNTER

OPEN.XCLOSE

A

1.

COM-SEP-CHK. Three position switch

enables selection

of

input signal from

separate

or

common sources

or

enables

the

selection

of a

Self-Check position.

a. COM:

Connects INPUT

A and

INPUT

Bin

parallel.

b. SEP:

Channel

A and

Channel

B

inputs

are

from separate sources.

c. CHK:

Self-Check verifies that

5300A

10 MHz

crystal oscillator

and

counting logic

and the

5304A

gating logic

is

functioning

correctly.

2.

INPUT

A and B.

Input signal frequencies

to be

measured

are

connected

to

INPUT

A.

INPUT

B is

used

in

time interval

measurements.

3.

ATTEN. Three-position input signal

attenuator

for

both channels.

a. XI:

Connects input signals directly

to

input amplifiers.

b. X10:

Attenuates input signals

by

factor

of 10.

c.

XlOO: Attenuates input signals

by

factor

of 100.

9D-3-2

Model 5304A

Operation

Figure 9D-3-2. Front-Panel Controls

and

Connectors (Continued)

4.

AC-DC. Two-position switch allows

selection

of

ac-coupling

or

direct-coupling

to

input amplifiers.

5.

SLOPE

+, -.

Selects

the

triggering

on

positive

or

negative slope

of the

input

signals.

6.

LEVEL. Adjusts

the

input trigger levels.

Preset

to

trigger

at 0

volts.

7.

FUNCTION. Twelve-position switch

enables 4 modes

of

operations

to be

selected.

The

modes

are:

a. T.I. A to B:

Enables time interval

measurements

to be

made from

500

nsec

to

10,000 seconds.

Resolution

is

adjustable from

.1 /JS

to 10 ms in six

decade steps.

b. PER AVG A:

Enables multiple

period averages

to be

made from

8.

Channel A with frequencies

of 10

Hz to 1 MHz.

Periods averaged

are

automatically selected from

1 to 10\

c.

FREQ

A:

Enables frequency

measurements from

0 to 10 MHz

when

dc

coupled

and 100 Hz to

10 MHz

when

ac

coupled.

1)

AUTO: Gate time

is

auto-

matically selected

to

fill

the dis-

play

for

maximum resolution

of

the

signal being measured, without

overflow,

up to a

maximum,

of

1

second.

2) .IS, IS, 10S:

Counter gate time

is

manually selected

for .1

seconu,

1

second

or 10

seconds.

d.

OPEN/CLOSE A (Totalize):

En-

ables input signals

to

Channel

A to

be

totalized. Totalizing

is

initiated

by

pressing OPEN/CLOSE A switch

and

terminated

by

pressing

the

switch a second time.

DELAY. Adjustment inserts a time interval

delay

of 100

/jsec

to 100

msec between

Start (Channel

A)

signal

and

Stop (Chan-

nel B)

signal; when disabled, there

is a

residual delay

of

about 4200 nsec.

9D-3-3

Model 5304A
Operation

Figure 9D-3-3 Rear-Panel Connectors

GATE

OUT

DELAY

OUT

1.

GATE

OUT: A

TTL-LOW level signal

while

the

5300A main gate

is

open.

2.

DELAY

OUT: A

TTL-LOW level signal

during

the

delay time selected

by

front-

panel DELAY control

(in T.I. A to B

mode only).

Model 5304A

Operation

Figure 9D-3-4. Making Self-Check Measurements

NVCLOSE

l(REAR)

/

INPUT

XIO

xioo

I

ATTEN

XI

XIO

XiOC

» DC

mi

5304A TIMER/COUNTER

PSE

SLOPE LEVEL

0

PSET**

I A TO B

FREQ

A

PER

10 ms
I ms
.1 ms

10 ps

I MS

l us

1

Connect

ac

power

to

5300A

ac

receptacle.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

KATE control. Adjust SAMPLE KATE

for

desired display time.

3. Set

5304A

COM

SEP-CHK switch

to CHK.

4. Set

5304A "Function" switch

to

FREQ

A,

AUTO. Display should

he

10.0000

MHz,

+ 1

count.

5. The

time interval hold-off

may be

meas-

ured

by

selecting

on of the T.I. A to B

positions

of the

"Function" switch.

9D-3-5

Model 5304A
Operation

Figure 9D-3-5. Making Frequency A Measurements

XIOO

IMER/

I

(REAR)

/

INPUT

ATTEN

T.I. A TO B

PER

10 ms v AVG '

\ •

t ms —^
.1 ms
10 |iS
I ps

MS

—

OPEN

FREQ

A

AUTO

It
I s

10 8

OSE A

PSET^

SLOPE LEVEL

Q

+

1.

Connect

ac

power

to

5300A

ac

receptacle.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

KATE control

and

adjust sample rate

for

desired display time.

3. Set

COM-SEP-CHK

to SEP.

4.

Connect input signal

to

INPUT A jack.

5. Set

ATTEN

to

XI00; AC-DC

U>

coupling

desired

and

SLOPE

to

polaritv desired.

Set

LEVEL

to

PSET.

(>. Set

"Function"

to

FREQ

A,

AUTO

and

adjust

the

ATTEN switch until a stable

display

is

obtained.

The

gate time

may

be

adjusted

for .Is, Is, or 10 sec.

Model 5304A

Operation

FREQ

A

NPUT

xioo

m DC •

53/4A TIMER/COUN/

Figure 9D-3-6. Making Period Average Measurements

I

(REAR)

1.

Connect

tic

power

to

5300A

ac

receptacle.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

KATE control. Adjust sample rate

for

desired display time.

3. Set

COM-SEP-CHK

to SEP.

4.

Connect input signal

to

INPUT A jack.

5. Set AIT EN to

XI00, AC-DC

to

coupling

desired

and

SLOPE

to

polarity desired.

Set

LEVEL

to

PSET.

(). Set

"Function"

to PER AVG A;

adjust

A'lTEN switch until a stable display

is

obtained.

The

number

of

periods averaged

is

automatically selected.

9D-3-7

Model 5304

\

Operation

l(REAR)

AUTO

Figure 9D-3-7. Making Time Interval Measurements

1.

Connect

ac

power

to

5300A

ac

receptacle.

6.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

RATE control. Adjust sample rate

for

desired display time.

3. Set

"Function" switch

to T.I. A to B,
with desired resolution. Ensure DELAY
control

is

full

ccw.

4. Set

ATTEN switches

for

both channels

to

XI00; AC-DC switches

and

SLOPE controls

switches

to

settings desired;

set

LEVEL

controls

to

PSET.

5. If

Start

and

Stop signals

are

from separate

sources, connect

the

Start signal

to

INPUT

A

connector

and the

Stop signal

to

INPUT

B

connector, then

set the

COM-SEP-CHK

switch

to SEP. If the

Start

and

Stop

signals

are

from a common source, connect

the

signal input

to

INPUT

A and set the

COM-SEP-CHK switch

to COM.

Adjust ATTEN switches until a stable

dis-

play

is

obtained.

Time Interval Holdoff (DELAY).

The

I)p]LAY control inserts a delay

of

about

100

psec

to 100

msec between

the

triggering

of the

START Channel

"A" and the en-

abling

of the

STOP Channel

"B" (see

Figure

B).

This delay

may be

used

to

measure relay

or

other mechanical
switch timing sequences without error
due to

contact bounce.

It may

also

be

used

for

measurements

on

pulse trains;

for

example from

the

start pulse

to a

later

pulse,

in the

presence

of

intervening pulses.

To use the

DELAY, proceed

as

follows:

a. If the

desired delay

is

known,

it

may be set and

measured

by

selecting

T.I. A to B and CHK and

setting DELAY control

to the

desired

delay time.

The

measurement

may

then

be

made

by

switching

COM-

SEP-CHK

in

step

5.

9D-3-8

Model 5304A

Operation

Figure 9D-3-7. Making Time Interval Measurements (Continued)

b. If the

input signals

are

pulse trains,

it is

possible

to

select a pulse

out of

the

train

by

increasing

the

DP]LAY

from full

ccw; the

measured time

interval will increase

in

steps

as the

delay falls after successive pulses

in the

train.

c. For

maximum flexibility

and

ease

of

interpretation,

an

oscilloscope

may be

used

to set up the

measurement

(as

shown

in

Figure

A). The

DELAY

OUTPUT

is

used

to

trigger

(he

time

base

and

intensity modulate

the dis-

play

(see

Figure

A). For a

repetitive

waveform,

the

Channel A input

may

fall during

the

display cycle,

and

therefore might

not

initiate a meas-

urement.

The

GATE output

may be

substituted

for the

DELAY OUTPUT;

this allows intensifying

the

actual

measurement rather than

the

delay.

If the

inputs

are

common,

the

GATE

OUTPUT

or

DELAY OUTPUT

can

be

displayed

on the

second channel

(or a

third channel

of a

four-channel

scope),

and the

other

of

these

two

used

to

intensity modulate.

d. Set

oscilloscope controls

as

follows:

HP 1801 A: Set A and B

Channel

controls

for a

display

of

both input

signal.

Set

DISPI

AY to A+B.

HP

182!A:

Set

TRIGGER

to EXT.

SLOPE

to -.

Coupling

to ACF.

SWEEP MODE

to

NORM.

Time/CM

for one

cycle

of

measured

Time Interval.

e. Set

DELAY slightly

out of

full

ccw

and

selcct

the

time interval delay.

The

SWEEP TIME

may

have

to be

readjusted.

f.

Adjust INTENSITY

to

view only

the

time interval measured.

g.

Oscilloscope time display

and

5300A

time readout should

be the

same.

Figure

B:

Example

of

Delay Control

CH A
INPUT
SIGNAL

CH B

INPUT
SIGNAL

GATE
SIGNAL

DELAY
OUT

SIGNAL

JUL

' I

{

I

' I

.TIME INTERVAL

HOLDOFF DELAY

TIME INTERVAL DELAY SETTING

Figure

A:

Delay Control Setup

1

'DELAY

OUT i

50 OHM

TERMINATIONS

EXT

INPUT

T I

STOP SIGNAL

T. 1.

START SIGNAL

SIGNAL

SOURCE

HPI80A

OSCILLOSCOPE

9! KM)

Model 5304A

Operation

Figure 9D-3-8. Totalizing

OPENXCLOSE OPEN

SAMPLE RATE

GSD

5300A MEASURING SYSTEM

HEWLETT • PACKARD'

l(REAR)

1.

Connect

ac

power

to

5300A

ac

receptacle.

2.

Turn

ac

power

"on"

with 5300A SAMPLE

RATE control. Adjust sample rate

for

desired display time.

3. Set

"Function" switch

to

OPEN ' CLOSE

A.

4. Set

Channel A ATTEN

to X100;

AC-DC

and

SLOPE

to

desired positions.

Set

LEVEL

to

PSET.

5.

Connect signal

to be

totalized

to

INPUT

A; set COM

SEP-CHK

to SEP.

6.

Press RESET; press OPEN/CLOSE

A

switch; C lamp should come

on.

7.

Reduce ATTEN A until counting occurs.

Display will accumulate

at a

rate depend-

ent on

input signal frequency.

8.

When

the

display

has

accumulated

the

desired number

of

counts, press OPEN

CLOSE A switch

to

stop totalizing.

9. If the

operator wants

to

totalize starting

from

the

number accumulated

in the dis-

play, press

the

OPEN/CLOSE A switch.

If a new

totalizing measurement

is to he
made, press RESET before pressing
OPEN CLOSE A switch.

T.I. A TO 8

FREQ

A

PER

10 ms AVG A ,

AUTO

\ ' V

4 *

0

"1 - *

PSET'

SLOPE LEVEL

INPUT

ATTEN

XI00

[Mi

5304* TIMER

9D-3-10

THY

Model 5304A

Theory

of

Operation

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

IV

THEORY

OF

OPERATION

9D-4-1. INTRODUCTION

9D-4-2. This subsection describes

the

theory

of

operation

for the

5304A Timer/Counter. Basic oper-

ation

of

gates, certain amplifiers

and

integrated

circuits

is

found

in

Section

IV of the

5300A portion

of the

manual.

9D-4-3.

To

simplify measurement making refer

to

operating information starting with Paragraph 9D-3-1

for

optimum adjustment

of

various controls.

9D-4-4. INPUT AMPLIFIERS

ANI)

MODES

OF

OPERATION

9D-4-5. CHANNEL

A. The

Channel A input signal

is

applied

to

front-panel INPUT A jack

and

attenu-

ated

by A2

attenuator assembly

(XI, X10, X100)

and

sent

to Al

Channel A input amplifier.

The

A2

Attenuator Board Assembly also contains

the

AC-DC switches, SLOPE switches,

and the

LEVEL

controls

for

both channels.

The

input signal

is

sent

through

A2 to the

input

of

matched

FET

source-

follower pair,

Q2 and Q4.

Diodes

CR2, CR4 are

limiters

for Q2

inputs.

9D-4-6.

One

side

of the FET

source-follower pair

(Q2)

receives

the

input signal from A2J2

and the

other side

(Q4) is

connected

to

LEVEL A trigger-

level control A2R9.

Q2 and Q4 are

connected

to

differential amplifier

Q6 and Q8

respectively

and

provides level shifting

and

gain

of

approximately

.3 for

Channel A signals. Resistor

R20 is a dc

balance

for

differential amplifier

Q6 and Q8.

9D-4-7.

The

output from

Q6, Q8

drives another

differential amplifier, U24B.

The

U24B output

is

shaped

by

Schmitt-Trigger U24A

and

level-shifted

(ECL to TTL)

through

U21B, Q12

combination.

The U21B

expander output

is

used

to

obtain

suf-

ficient signal swing

to

drive

Q12.

9D-4-8. CHANNEL

B. The

Channel B input signal

is

applied

to

front-panel INPUT B jack

and

attenu-

ated

by A2

Attenuator Assembly

(Xl, X10,

XI00)

and

sent

to Al

Channel B input amplifier.

The A2

Attenuator assembly also contains

the

Channel

B

coupling switches, slope switches

and the

Channel

B

level control.

The

Channel B signal

is

routed

through

A2 to the

input

of

matched

FET

source-

follower pair

Ql and Q3.

Diodes

CRl, CR3 are

limiters

for Ql

inputs.

9D-4-9.

One

side

of the

Channel

B FET

source-

follower pair

(Ql)

receives

the

input signal from

A2J1 and the

other side

(Q3) is

connected

to

LEVEL

B

trigger level control A2R10.

Q5 and Q7 are con-

nected

to

differential amplifiers

Qf> and Q7 re-

spectively

and

provide level-shifting

and

gain

of

approximately

.3 for

Channel B signals. Resistor

R19 is a dc

balance

for

differential amplifier

Q5

and Q7.

9D-4-10.

The

output from

Q5, Q7

drives another

differential amplifier U23B.

The

U23B output

is

shaped

bv

Schmitt-Trigger U23A

and

level-shifted

(ECL to TTL)

through

U21A, Qll

combination.

The

U21A

expander output

is

used

to

obtain sufficient

signal swing

to

drive

Qll.

9D-4-11. VOLTAGE REGULATION. Transistors

Q9,

Q10

provide regulated, low-ripple

dc

power

to the

amplifiers

and

time interval hold-off circuits.

9D-4-12. SLOPE SELECTION. Slope selection

for

Channel

A is

accomplished

by

using

U19C,

U20C,

and

U20I)

in

conjunction with A2S7. Slope selection

for

Channel

B is

accomplished

by

using U19I),

U20D,

and

U20A

in

conjunction with A2S(>.

9D-4-13. CHECK MODE.

In the

CHECK mode,

the

operation

of the

5300A

10 MHz

crystal oscillator

and

counting logic

and the

5304A gating logic

is

verified. When

A2S1 is in CHK

mode, ground

is

applied

to

U18A(2), U18I)(12),

and

U13C(5).

The

10 MHz

clock from

the

5300A A1J1(16)

is

routed

through

the

5304A AlPl(16)

and

sent

to

U12D(12).

The

Channel A switch (U18B)

and

Channel B switch

(U18C), gate

the 10 MHz

clock signal through.

The

Channel A switch output

is

also gated through

U12B

and U16B and is

available

as the Fl

signal

at

A1P1(5).

9D-4-14. FREQ A MODE.

In the

frequency

measuring mode, with

the

"Function" switch

S2 in

any of its

four frequency measuring positions

(FREQ AUTO,

.IS, IS, 10S) the

Channel A input

signal

is

gated through "Channel A Slope Selection"

switch comprised

of U19C,

U20C,

and

U20B.

The

input signal

is

then routed through another "Channel

A"

switch made

up of U18A and U18B.

From

U18B(6)

the

Channel A input signal

is

gated through

U12B and U16B as the Fl

signal

to the

5300A

mainframe which controls

the

opening

and

closing

of the

main gate.

The 10 MHz

clock signal from

9D-4-1

Model 5304A
Theory

of

Operation

the

5300A mainframe

at A1

Pi(16)

is

routed through

U12C as the F2

signal

to

control

the

time base,

which clocks

the

opening

and

closing

of the

main

gate.

9D-4-15.

The

positive-going edge

of a

negative pulse

from

U17E is the MAX

TIME signal.

The MAX

TIME signal

at A1

Pi(17) triggers a display cycle

in

the

5300A mainframe. This negative-going pulse

can be

generated from

one of two

sources.

One

of the

sources

is the

positive-going edge

of the

MGFF line

at

A1P1(12) which indicates

the

closing

of the

5300A main gate. This signal

is

inverted

through

U17D and

differentiated

l>y CI4 and R69.

CR18 is a

clamping diode

to

shorten

the dif-

ferentiation recovery time.

The

negative pulse

of the

differentiated waveform, gates

U16A "on"

and the

narrow positive-going pulse

is

inverted

through

U17E as the MAX

TIME signal.

9D-4-16.

The

TIME BASE

OUT

signal

at

AlPl(18)

comes from

the

5300A mainframe

and is

buffered

by Q18

then gated through

U14C, U1HA, and

inverted

through

U17E as the MAX

TIME signal.

9D-4-17.

The

positive-going edge

of the

negative

pulse

at

A1PK17), indicates

the

display cycle

has

been triggered.

9D-4-18. PERIOD

AVG A

MODE.

In

period average

mode

the

"function" switch

S2

enables

UlA, U6D,

U12C, and U14A. The

Channel A signal

is

routed

through "Channel A Slope Selection"

and

"Channel

A

Switch"

at

U18B(6).

The

signal

is

then gated

through

U16C and is

available

at

AlPl(21)

as the 1

MHz

TIME BASE.

The

CLOCK signal

at

A1P1(16)

is

gated through

U12A, U16B as the Fl

signal

to

be

counted.

9D4-19. Flip-flop

U4A

prevents very narrow pulses

from triggering

the

time base

but not the

main

gate.

The

first Channel A pulse after

the

INHIBIT

signal goes high

at the end of the

display cycle

"clocks" U4A(5)

to a

high state

and

enables

U16C.

The

next positive-going edge

of the

Channel A signal

is

gated through

U16C as the 1 MHz

TIME BASE

INPUT signal.

The

main gate

is

then closed

by

one of two

events.

The

first event

is: The 9

signal

line from 5300A,

U3

COUNTER, goes

low, and

enables

the

main gate

in the

5300A,

U5

CONTROL,

to

close

on the

next

LOG

pulse. When

the 9

line

goes

low it

indicates that

the

display

is 9%

full.

The

main gate closes

at the end of the

next decade-

multiple

of the

input signal

to

prevent overflow.

The

second event

is: The

TIME BASE

OUT

signal

(A1P1(18)) from

the

5300A,

U4

TIME BASE goes

low

indicating

the I0a periods have been counted.

The

main gate closes because

no

more counts

can

be

stored

in the

5304A exponent counter

U8A and U8B.

The

exponent counter counts

the

number

of

decade-

transitions

of the

input signal that have been

counted

(1, 10, 100, 1000

input transitions

or ex-

ponent counts

of 1, 2, 3, 4).

9D-4-20.

The LOG

OUTPUT signal (generated

by

5300A,

U4

TIME BASE)

is

active

in

Frequency

and

Period Average Modes

and

provides pulses

to

open

and

close

the

main gate. Following a display cycle

and

reset,

the

first

LOG

pulse opens

the

main gate

and a

following

LOG

pulse will close

the

gate only

after

a 9 or MAX

TIME

low

signal enables

the

closing

of the

main gate flip-flop.

9D-4-21. OPEN/CLOSE A MODE.

In

open/close

mode, with

the

"function" switch

S2 in

OPEN/

CLOSE position

the

main gate

is

opened

and

closed

by

successive actuations

of

pushbutton switch

SI.

The

Channel A input signal

is

gated through "Slope

Selection" switch

U19C,

U20B,

and

U20C

to

"Chan-

nel A

Switch"

U18A and U18B.

9D-4-22.

The

Channel A input signal

is

gated

through

U12B, U16B to be

counted.

U4B

"clocks"

on

successive actuations

of the SI

OPEN/CLOSE

switch. When U8B(9) output

is low the

5300A

main gate

is

opened (through U19B). When

U4B(8) output

is low the

5300A main gate

is

closed

(through

U14D and

U22A). When

the

"Function"

switch

S2 is in a

position other than OPEN/CLOSE,

the U4B

Preset

and

Clear lines

(U4B

pins

10 and 13

respectively)

are set

through

U10A and B, so

that

IJ4B,

Q and Q

output

(U4

pins

9 and 8) are

high.

9D-4-23. TIME INTERVAL

A-B

MODE.

In the

time interval mode,

the

"function" switch

S2 may

be set to any one of six

time-interval positions

(.1

/Jsec

to 10

msec).

The

5300A main gate

is

opened

by a

Channel A transition

and

closed

by a

Channel

B

transition. Switch

A2S1

enables

the

input signals

to be

taken from separate sources

or

from

a

common source.

9D-4-24.

The

Channel A signal, after passing

through

A2

Attenuator Assembly,

is

processed

through Channel A amplifier,

Q2 Q4 and

differntial

amplifiers

Q6, Q8, and

U24B.

The

U24B output

is

shaped through U24A Schmitt-Trigger

and

sent

through

an

ECL-to-TTL level-shifter (U21B,

Q21)

to the

Channel A Slope Selection circuits (U19C,

U20C, U20B).

9D-4-25.

The

output from U20B(4)

is

gated through

Channel A switch, comprised

of U18A and B. The

Channel A signal "clocks"

U15B

which

is

gated

through

U9C, U19B, and

opens

the

5300A main gate.

During

the

gate-open time,

the

TIME BASE

OUT

9D-4-2

Model 5304A

Theory

of

Operation

signal from

the

5300A

A1J 1(18) is

gated through

Q18, U17F, U9B, and U16B to be

counted (except

in the .1

fjsec position, where

the 10 MHz

clock

is

gated through

U12A and

U16B).

The

TIME BASE

OUTPUT signal

is a 10 MHz

clock signal divided

down

by the

time base

to

allow counting

in

incre-

ments

of 1

fjsec,

10

fjsec

etc.

9D-4-26.

The

main gate closes when Channel

B

"clocks"

U15A and a

display cycle

is

initiated

by

the

positive-going edge

of the

MGFF signal

at

A1P1(12). This signal

is

inverted through

U17I)

and

differentiated

by C14 and R69. The

negative

pulse

of the

differentiated waveform gates

U16A

"on" and the

narrow positive-going pulse

is

inverted

through

U17E as the MAX

TIME signal.

9D-4-27.

At the end of the

display cycle,

the

RESET signal

at

AlPl(15)

is

inverted through

U13E and

sets U15B(9)

low.

U15A(5)

is set

high

by

the

PRESET signal

at

U15A(4).

The

INHIBIT signal

goes "high"

and

sets U15B(12)

so

that

U15B

changes

states

on the

positive-going transition from U18B(6).

This produces

two

results:

1.

U9C(8) goes

low

which

set the

OPEN signal

at

A1P1(10)

low

through

U19B and

opens

the

5300A main gate.

2. Q16

turns

off and

allows

C12 to

charge

through

R43 and R61.

9D-4-28. Transistor

Q15 is an

emitter-follower

in-

put to

Schmitt-Trigger

Q13, Q14. The

output from

Q13 is

level-shifted

by CR15 and

inverted

by Q17.

Q15, 14, 13, and 17

form a one-shot multivibrator

with a very wide timing range.

U15A

cannot change

states until

Q17

output goes

low;

then U15A(3)

is

clocked

to its

opposite state

by the

positive trans-

ition

of U18C

(Channel B switch output).

The

U15A(5) output

is

gated

and

inverted through

U14I)

and

U22A. This causes

the

CLOSE signal line

to

go low

which

in

turn closes

the

5300A main gate.

9D-4-29.

The

5300A main gate cannot

be

re-opened

until

U15B is

cleared

by the

RESET signal

at

A1PK15)

and

until

the

INHIBIT signal

at

AlPl(8)

sets U15B(12) high. U15B(8) goes high

at

RESET

and

turns

on QI8

which discharges

C12.

When

R43(S2)

is

open (full

ccw), CI2 is not

charged

up and the

one-shot time-interval

is

very short

(about

200

nsec).

The

time-interval

is the

interval

from

the

time U15B(8) goes

low and Q17

collector

goes

low.

9D-4-30. A buffered DELAY

OUT

signal

is

provided

at J3 and may be

used

for

intensifying

the

oscil-

loscope Z axis which permits observing

the

start

and

stop period

in a

time interval measurement.

A

buffered GATE

OUT

signal

is

also provided

at J4

which permits observing

the

gate signal duration

in a

time interval measurement

9D-4-31. EXPONENT COUNTER; EXPONENT

STORAGE. Outputs from

the

5300A,

U5 EXP

line

are

appli<

J to

exponent counter

U8A, U8B

"Clock

input".

The

RESET signal

at A1

Pi(15) clears

USA

and

presets

U8B for

another measurement.

Ex-

ponent signals "clocked" into

U8

indicate length

of

measurements

(10 ms, 100 ms, or 1 sec in

FREQ AUTO mode;

1, 10, 100, 1000

periods

in

PERIOD

AVG

mode). During

the

measurement

cycle, information

is

transferred into

U7A, B

exponent storage

by the

TRANSFER signal. There-

fore,

the

displayed measurement,

the

decimal point

and the

units, change simultaneously.

9D-4-32. Exponent storage

U7A, B is

disabled (both

flip-flops

are

cleared), except

in

AUTO measure-

ments,

by U6I).

Manual reset also clears

U7A, U7B,

the

decimal point

and

measurement units.

9D-4-33.

The

remainder

of the

gates with

the

exception

of U5B

provide time base, decimal point,

annunciator,

and

function decoding.

The U3A out-

put is

high

in any of the

four frequency-measuring

positions.

U5B

locks

out the LOG

OUTPUT signal

in

OPEN CLOSE

A and

TIME INTERVAL

A B,

when

the

open

and

closing

of the

main gate

is con-

trolled

by

OPEN

and

CLOSE.

9D-4-34.

Q19

normally turns

off the 9

line except

during frequency Auto

or

Period Average; this

allows overflow

to

occur,

if

desired,

in

manual

fre-

quency position.

9D-4-3

MAINTENANCE

Model 5304A

Maintenance

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

V

MAINTENANCE

9D-5-1. INTRODUCTION

9D-5-2. This section contains maintenance

and

service information

for

Model 5300A/5304A Timer/

Counter. Included

are

performance check procedures

and

tests

to

localize, isolate,

and

locate defective

components.

9D-5-3. RECOMMENDED TEST EQUIPMENT

9D-5-4. Test equipment recommended

for

perform-

ance checks, maintaining, troubleshooting

and

servicing

the

5300A/5304A Timer/Counter

is

listed

in

Table

5-1 of

5300A portion

of the

manual. Test

equipment with equivalent characteristics

may be

substituted

for

equipment listed.

9D-5-5. INSTRUMENT ACCESS

9D-5-6.

For

access

to

plug-on assembly, separate

the

5300A from

the

5304

A as

follows:

a.

Turn

ac

power

OFF and

disconnect power

cord.

b.

Pull

the

two-side casting latches fully rear-

ward

(it is

necessary

to

press

the

latch handles

gently away from

the

center

of the

instrument

to

unlock them).

c.

When latches

are

fully extended rearward,

the

5300A

and

5304A castings should

be

separated

by

cbout '/g-inch.

d.

Lift

the

5300A gently away from

the

5304A.

e.

Separate 5304A

Al

BOARD ASSEMBLY from

5304A casting

as

follows (refer

to

Figure 9D-5-1):

1.

Press rear, plastic-nylon retaining clips

on

each side

of

5304A casting

and

lift

the

rear

of the Al

Board Assembly

to

release

it

from

the

casting.

2.

Press front plastic-nylon retaining clips

on

each side

of

5304A casting

and

lift

the

front

of the Al

Board Assembly

to

release

it

from

the

casting.

3.

Lift

Al

Board Assembly from

the

casting.

f.

Mate

the

5304A,

Al

Board Assembly

to

5300A

and

reapply

ac

power.

g. To

reinstall

the Al

Board Assembly into

the

casting reverse procedure

of

steps d through

f.

9D-5-7. PERIODIC MAINTENANCE

9D-5-8.

To

determine

if the

53O0A/53O4A

is

oper-

ating properly within specifications, perform

the In-

Cabinet Performance Checks listed

in

Table 9D-5-1.

These checks

may

also

be

used

for the

5300A

per-

formance checks when

the

5300A/5304A combination

is

used.

9D-5-9. MAINTENANCE

AND

REPAIR

9D-5-10. BOARD REMOVAL. When removing

the

printed circuit board

for

replacement, repair,

or

servicing, always remove

ac

power

and

separate

the

board from

the

casting using Paragraph 9D-5-6

steps

a to e.

9D-5-11. COMPONENT REPLACEMENT. When
replacing a circuit board component

use a low

heat

soldering iron. Heat must

be

used sparingly

as

damage

to the

circuit foil

may

result. Mounting

holes

may be

cleaned

out

with a toothpick while

heat

is

applied. Connection should

be

cleaned with

a

cleaning solution after component removal

and

replacement.

9D-5-12. INTEGRATED CIRCUIT REPLACEMENT.
Two

methods

are

recommended

for

removing

integrated circuits:

a.

Solder Gobbler. Solder

is

removed from

board

by a

soldering iron with a hollow

tip con

nected

to a

vacuum source.

The IC is

removed

intact

so it may be

reinstalled

if

diagnosis

is

wrong.

b.

Clip-Out. This method

is

used when

an IC

is

proven defective. Clip leads close

to

case, apply

heat

and

remove leads with long nose pliers.

Clean board holes with a toothpick

and

cleaning

solution.

9D-5-13. INSTRUMENT TROUBLESHOOTING

9D-5-14. Trouble isolation

can

best

be

accom-

plished

by

first obtaining

all

possible information

from

the

controls, connectors,

and

indicators

on the

5300A

and

5304A, then logically using this infor-

mation

to

locate

the

defective component.

If the

9D-5-1

Model 5304A
Maintenance

Figure 9D-5-1. Separation Procedure

Model 5304

A

Maintenance

performance checks indicate a malfunction

or if

instrument operation

is

suspect, perform

the

Self-

Check procedures

in

Table 9D-5-1.

For

further tests,

separate

the

5304A from

the

casting

and

reconnect

to

5300A using Paragraph 9D-5-6 steps

a to e as

a

guide. Operating procedures

in

Subsection

9D-3

can be

used

to

help understand operation.

To

test

the

5304A, obtain

the

test equipment listed

in

Table

5-1 of the

5300A portion

of the

manual.

9D-5-15. Figure 9D-5-2

to

Figure 9D-5-6

are

trouble-

shooting flow diagrams

for

each

of the

five modes

of

operation. Signal flow

is

outlined

for

each mode

and

waveform test points

and

voltage test points

are

indicated.

The

waveforms

or

voltage level

for

each mode

is

included with

the

figures.

To

obtain

the

waveforms and/or levels

for

each mode,

follow

the

directions

for

instrument connections

which

are

listed with

the

troubleshooting flow

dia-

grams

of

each respective mode.

9D-5-16.

DC

BALANCE ADJUSTMENT

9D-5-17.

If

Channel

A or

Channel B fail

to

oper-

ate

with their respective LEVEL controls

in

PSET

position when measuring sine wave signals,

or

when

periodic maintenance/calibration

is

performed,

the

dc

balance

may be

adjusted

as

follows:

a.

Connect

an HP 651B

Oscillator,

set to 10

MHz, 50 mV

rms/5012, through

a 50 OHM BNC

Feed-

thru Termination,

to

Channel A input.

b. Set the

5304 A controls

as

follows;

ATTEN

to XI

(both channels).

AC-DC

to AC

(both channels).

+, - to +

(both channels).

LEVEL

to

PSET (both channels).

SEP-CHK

to SEP

"Function"

to

FREQ

A,

AUTO

c.

Connect

an HP 180A

oscilloscope through

a 10 Mi) pi obe to

U18(6).

d.

Adjust

the

oscilloscope controls

to

monitor

a

useable signal.

e.

Adjust A1R20

for a

symmetrical waveform

with minimum

or no

change

in

duty-cycle when

SLOPE switch

is

changed from

+ to - and

minimum

or no

change when AC-DC switch

is set to AC

or DC.

f.

Connect

the

oscilloscope probe

to

U18(8)

and the 651B

input signal

to

Channel

B.

g.

Adjust

A1R19 for a

similar display observed

in

step

e.

9D-5-3

Model 5304A
Maintenance

FREQ

A,

AUTO MODE.

5304A controls:

Channel

A, SEP, XI, AC, +,

PSET, AUTO

INPUT:

HP 651B set to 10 MHz, 100 mV

rms/50S2.

Oscilloscope:

HP 180A, 1801A

Vert.

Amp. 1821A T.B.

through

a 10:1

probe.

Settings:

AC

coupled (except

as

noted).
NORM sweep mode.
+

SLOPE (except

as

noted).

ACF

(except

as

noted).

Channel

A.

5300A SAMPLE RATE

ccw out of OFF

(except

as

noted). 5300 Display should

be

approximately

the

same

as the HP 651B

setting.

Test points using

HP

10525A Logic Probe

H =

High (lamp

on)

L = Low

(lamp

off)

TPl H

(dim). Flash rate decreases

as

5300

SAMPLE RATE control

is

truned

cw.

TP2 H

(dim). Flash rate decreases

as

5300

SAMPLE RATE control

is

turned

cw.

I^evel goes

Low

when 5300A RESET

is

pressed.

TP3 H

(dim). Flash rate decreases

as

5300A

SAMPLE RATE control

is

turned

cw.

Level goes

Low

when 5300A RESET

is

pressed.

TP4 H

(dim). Hash rate decreases

as

5300A

SAMPLE RATP] control

is

turned

cw.

Level goes High when 5300A RESET

is

pressed.

TP5 H

(dim). Flash rate decreases

as

5300A

SAMPLE RATE control

is

turned

cw.

Level goes High when 5300A RESET

is

pressed.

TP6 L.

Goes High when

53(H)

R&SET

is

pressed.

TP7 L.

Goes High when 5300A RESET

is

pressed.

TP8

9D-5-4

O .01 V/cm

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o .01 V/cm O .01 V/cm O .2 V/cm

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dc

coupled

dc

coupled

dc

coupled

-

slope

-

slope

-

slope

O .2 V/cm

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(isec/cm

dc

coupled

.2 V/cm
. 1

(isec/cm

dc

coupled

® .1 V/cm

.1

fisec/cm

.2 V/cm

10

msec

cm

dc

coupled

-

slope

.1 V/cm

.1

fj-sec/cm

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Figure 9D-5-2. Frequency A Troubleshooting Diagram

9D-5-5

Model 5304A
Maintenance

PERIOD AVERAGE A MODE

5304A Controls:

Channel

A, SEP, XI, AC, +,

PSET,

PER AVG A.

INPUT:

651B set to 1 kHz, 100 mV

rms/5012.

Oscilloscope:

HP 180A, 1801A

Vert

Amp, 1821A T.B.

through

a 10:1

probe.

Settings:

AC

coupled (except

as

noted).
NORM sweep mode.
+

slope (except

as

noted).

Channel

A.

5300A

SAMPLE RATE

ccw out of OFF

(except

as

noted). 5300 Display should

be

approximately

1.00000

MS, C.

HP

10525A Logic Probe

Test points using

H =

High (lamp

on)

L = Low

(lamp

off)

TPl H

(dim). Flash rate decreases when 5300 SAMPLE

RATE

is

turned

cw.

Goes

Low

when RESET

is

pressed.

TP2 H

(dim). Flash rate decreases when 5300 SAMPLE

RATE

is

turned

cw.

Goes Ix>w when RESET

is

pressed.

TP3 H

(dim). Flash rate decreases when 5300 SAMPLE

RATE

is

turned

cw.

Goes High (bright) when

RESET

is

pressed.

TP4 H

(dim). Flash rate decreases when 5300 SAMPLE

RATE

is

turned

cw.

Goes High (bright) when

RESET

is

pressed.

TPS L.

Goes High when RESET

is

pressed.

TP6 H

TP7 H

9D-5-6

O .01 V/cm

1

msec/cm

® .01 V/cm

1

msec

/cm

O .2 V/cm

.5

msec/cm

dc

coupled

O .2 V/cm

.5

msec/cm

dc

coupled

O .2 V/cm

10

msec/cm

dc

coupled

-

slope

.2 V/cm
.2fj.sec/cm
dc

coupled

-

slope

0 .05 V/cm

50

jisec/cm

dc

coupled

© .2 V/cm

. 1

fjLsec

cm

dc

coupled

O .2 V/cm

.5

msec/cm

dc

coupled

.2 V/cm

.1

|.isec/cm

dc

coupled

0 .2 V/cm

.2

fxseccm

dc

coupled

-

slope

.2 V/cm

10

msec

cm

dc

coupled

slope

10

msec

cm

A

5

msec/cm

n

1

msec

cm

dc

coupled

dc

coupled

dc

coupled

-

slope

-

slope

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Model 5304A

Maintenance

TIME INTERVAL

A TO B

Mode,

.1

(isec position.

Equipment connections:
shown

in

Figure 9D-5-4A.

Connect equipment

as

Control Settings: 5300/5304A.

ATTEN (both channels)

to XI.

AC-DC (both channels)

to DC.

SLOPE (both channels)

to +.

LEVEL.

Set

Channel A LEVEL slightly positive

(+)

until

the "C"

lamp comes

on. Set

Channel

B

LEVEL

cw

until a stable 5300 display

is

obtained.

Function

to .1

fosec.

COM/SEP/CHK

to SEP.

Oscilloscope:

VOLTS/CM

to 2

(both channels).

DISPLAY

to A + B.

INPUT (both channels)

to DC.

TIME/CM

to 1

}j^ec.

SWEEP MODE

to

NORM.

TRIGGER

to INT.

SLOPE

to +.

Coupling

to ACF or AC.

No. 1 HP

222A:

REP

RATE

to

1K-10K with adjustment centered.

PULSE DELAY

has no

effect.

PULSE WIDTH

to .05 .5.

Vernier adjusted

for

oscilloscope display

of. 1

fisec.

PULSE POLARITY

to +.

PULSE AMPLITUDE

for a +2 V

pulse

on

oscilloscope.

No. 2 HP

222A:

REP

RATE

to

MAN/EXT

+.

PULSE WIDTH

to

.05-.5. Vernier adjusted

for

oscilloscope display

of .1

fisec.

PULSE POLARITY

to +.

PULSE AMPLITUDE

for a +2 V

pulse

on

oscilloscope.
PULSE DELAY

for

approximate display,

on

oscilloscope

and

5300A,

of 10

fj.sec (5300 display

should

be

approximately 00010.0(is

C).

From

the

set-up outlined

in

Figure 9D-5-4A,

dis-

connect

the

Channel A input

to the HP 180A

Oscil-

loscope. Connect

a 10:1

divider probe

and

check

for the

waveforms listed.

Test points using

an HP

10525A I»gic Probe

H =

High (lamp

on)

L = Low

(lamp

off)

TPl H

(dim). Flash rate decreases when DELAY

control

is

turned

cw or

when SAMPLE RATE

is

turned

cw.

TP2 H

(dim). Flash rate decreases when DELAY

control

is

turned

cw or

when SAMPLE RATE

is

turned

cw.

TP3 H

(dim). Flash rate decreases when DELAY

control

is

turned

cw or

when SAMPLE RATE

turned

cw

Figure 9D-5-4A. Time Interval Mode Troubleshooting Set-Up

INPUT

soft

FEEOTHRU

50 A

FEEOTHRU

BNC TEE

BNC TEE

No 2

OELAYED

PULSE

BNC TEE

INPUT

PULSE

OUTPUT

PULSE

OUTPUT

EXT

TRIG

INPUT

HP

5300A

HP

5304A

I80IA

HPISOA

182 lA

9D-5-8

Model 5304A

Maintenance

Part

of

Figure 9D-5-4. Time Interval Troubleshooting Diagram

.1 V/cm
.1

[isec/cm

o

.05 V/cm
. 1

|j.8ec/cm

-

Slope

.05 V/cm

. 1

fisec/cm

dc

coupled

-

Slope

.2 V/cm
.1

jisec/em

dc

coupled

-

Slope

.2 V/cm
. 1

fisec/cm

dc

coupled

.1 V/cm
.1

fj.sec/cm

.05 V/cm
. 1

fisec/cm

.05 V/cm
. 1

fisec/cm

dc

coupled

-

Slope

.2 V/cm
.1

fisec/cm

dc

coupled

-

Slope

.2 V/cm
. 1 p.

sec/cm

dc

coupled

.2 V/cm
. 1

fisec/cm

dc

coupled

9D-5-9

Model 5304A

Maintenance

Part

of

Figure 9D-5-4. Time Interval Troubleshooting Diagram

0

.2 V/cm
. 1

(isec/cm

dc

coupled

o

.2 V/cm
.1

fisec.

<-m

dc

coupled

©

.2 V/cm
.1

jj.8ec/cm

dc

coupled

.2 V/cm
. 1

[iHeccm

dc

coupled

-

Slope

Q A

.2 V/cn

5(i8ec/cm

dc

coupled

-

Slope

(DELAY

IN

DETENT)

Q H

.2 V/cm
.1

msec/cm

dc

coupled

-

Slope

(DELAY just

out of

DETENT. 5300

Dis-

play

and

waveform

should

be the

same)

©

.2 V/cm
.2fjisec/cin
dc

coupled

-

Slope

® A

.2 V/cm
5p.sec/cm
dc

coupled

-

Slope

(DELAY

IN

DETENT)

Q B

.2 V/cm
.1

msec/cm

dc

cdoupled

-

Slope

(DELAY just

out of

DETENT. 5300A

Dis-

play

and

waveform

should

be the

same)

.5 V/cm

)()

usee/cm

dc

coupled

(DELAY

IN

DETENT)

9D-5-10

© H

.5 V/cm

50

|j.sec/cm

dc

coupled

(I)BLAY just

out of

DETENT. .5300A

Dis-

play time should

be

approximately

one-

half

the

oscilloscope

waveform time)

©

.1 V/cm

50

fj.sec/cm

dc

coupled

© A

.2 V/cm
. 1

fisec/cm

dc

coupled

-

Slope

(DELAY

IN

DETENT)

© A

.5 V/cm
50

fisec/cm

dc

coupled

(DELAY

IN

DETENT)

©

.2 V/cm
.1

[isec/cm

dc

coupled

•

Slope

.5 V/cm
50

jisec/cm

dc

coupled

(DELAY just

out <>f

DETENT. 5300A

Dis-

play should

be ap-

proximately

200 > to

240|isec)

©

.2 V/cm
20

fisec/cm

dc

coupled

-

Slope

(DELAY just

out of

DETENT. 5300A

Dis-

play should

be ap-

proximately

200 to

240jasec)

© A

.2 V/cm
.1

/-tsec/cm

dc

coupled

-

Slope

(DELAY

IN

DETENT)

© H

.2 V cm
50

fisec/cm

dc

coupled

-

Slope

(DELAY just

out of

DETENT. 5300A

Dis-

play should

be

approximately

the

total time

of

wave-

form pulse)

.2 V cm

. 1 fj sec cm

dc

coupled

A!

TIME INTERVAL BOARD ASSEMBLY tos*

A2

ATTENUATOR BOARD ASSEMBLY <oao* tooo?)

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TIME INTERVAL HOAHD ASStMbLY (0S304-60000

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INHIBIT

CHANNEL A SWUCH

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7.

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TIME BASE INPUT

DIGIT SELECT

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DIGIT AOOHtii

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Figure 9D-5-4. Time Interval Troubleshooting Diagram

9D-5-11

Modei 5304A
Maintenance

OPEN/CLOSE MODE

5304A Controls:

Channel

A, SEP, XI, DC, +,

PSET

OPEN/CLOSE

A.

Press RESET, then

OPEN/CLOSE; display should

be ac-

cumulating

at a 10 Hz

rate.

INPUT:

651B set to 10 Hz, 100 mV

rms/50<2.

Oscilloscope:

HP 180A, HP 1801A

Vert

Amp, HP 1821A T.B.

through

a 10:1

probe.

Settings:

AC

coupled (except

as

noted).
NORM sweep mode.
+

slope (except

as

noted)

AC

(except

as

noted)

Channel

A

5300A Sample Rate

ccw out of OFF

(except

as

noted).

5304A: OPEN/CLOSE Mode

TPl H.

Goes

Low

when OPEN/CLOSE switch

is

pressed. Reamains Ix>w

if

this switch

is

held depressed.

TP2 L.

Goes High when RESET

is

pressed.

Re-

mains High

if

this switch

is

held depressed.

TP3 L

TP4 L.

Goes High when OPEN/CLOSE

is

pressed

to

stop accumulation

or

when RESET

is

pressed during accumulation.

TP5 H.

Goes

Ix)w

when OPEN/CLOSE

is

pressed

to

stop accumulation

or

when RESET

is

pressed during accumulation.

9D-5-12

o

.01 V/cm

20

msec/cm

® .02 V/cm

20

msec/cm

O .05 V/cm

50

msec/cm

dc

coupled

® .2 V/cm

50

msec

dc

coupled

© .2 V/cm O .2 V/cm O .2 V/cm

50

msec/cm

50

msec/cm

50

msec/cm

dc

coupled

dc

coupled

dc

coupled

AI

TIME INTERVAL BOARD ASSEMBLY

it

A?

ATTENUATOR BOARD ASSEMBLE «m04 6Qoo?i

015

016

El

014

ED >

m

••

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TIME INTERVAL BOARD ASSEMBLY IOSSO*-6000.:

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Or

^9

(5PTSi

^ 10

5.T55T

} a

TIME BASE

OUT

DIGIT SELECT

OANNEL

e

SLOPE SELECTION

9 £V

I

LEVEL

* | I

LEVEL

B |

• 0 0 • 0 0

@,g SD go

lu'W

)i2 M5R

OAW«I

*

SLOPE SELECTION

SI

•HI (/•,

,—

CHANNEL * SWITCH-

1 —' \ ,, "

' •, *

TiMJ BASE INPUT

• V M DIGIT SELECT

6 12

UIZO

P/C

AlPI

I \ M DIGIT AOOBESS

®

rr*t

19

WIST

IIUtMJ

- ; ^3

CHANNlL B SWITCH

EXPONENT STOWAGE

—.

4 5? MAN

RESE

EXPONENT COUNTEH

Ei(51 "M5

CM

J) /<> JV

24 TB

SELECT

*C

• «' OM

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^ «6 DP i

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FA

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OIGIT SELECT

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iOlU"C

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SCHMi'

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± J2 TB

SELECT

"A*

EVEL

.

SHir'

f

[?(«! 1O5

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&y? 1

o

Model 5304A
Maintenance

CHECK MODE

5304A Controls:

COM/SEP/CHK

to CHK;

"Function"

to

AUTO

5300A Display should

be

10.0000

MHz C ±1

count.

Oscilloscope:

HP 180A, HP 1801A

Vert

Amp, HP 1821A T.B.

through

a 10:1

probe

Settings:

AC

coupled (except

as

noted).
NORM sweep mode.
+

Slope (except

as

noted).

AC

(except

as

noted).

Channel

A.

9D-5-14

o

.2 V/cm

. 1

fj.sec/cm

dc

coupled

• .2 V/cm O .2 V/cm

• *

M-

8ec

/cm

1

fisec/cm

decoupled decoupled

.2 V/cm
. 1

fjLsec/cm

dc

coupled

A2

ATTENUATOR BOARD ASSEMBLY COSJO*-coooz)

EJ

fl-n

• 00 00B

Isp.5

oio

1

iP Oh

05 07

Mv -

09

'wouLArmis

Oil

- ten lo |o

02 * 5 04

5

06

06

012

T

Al

TIME INTERVAL BOARD ASSEMBLE

y0'5

016

014

013^

v **

; [5^D

El IS)

"i>IS

-2ULL

mo *"T *•"

Al

TIME INTERVAL BOARD ASSEMBLY <OSJO4

SJ U3* /' 1 }

11

LOG

OUTPfT

^ 9 &rh

••CMMNEL

M

EOK

SELECTION

DIGIT SELECT

I

ttvu

* 1 I

LEVEL

» I

DIGIT AOORfSS

• 00 000

~3.8

S3182

o um

f 16 KJ UHi

CLOCK

OPEN/CLOSET)

ry-a

INHIBIT

CHANNEL * SWITCH

1

r/o

AIPI

flME BASE INPUT
DIGIT SELECT

M

OlGlT AOORESS

WWT

•»; (HZD

CHI7

•

CHANNCL • SWITCH

EXPONENT COUNTER

EXPONENT STORAGE

CRI4

(2 TV

*47 <S»

ClKI

IZ»T]

o ~T t

r>s«

M

> *6 S3

I^ITIUI
REGULATORS

h>4€

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2(2) Oil

»U f»

LEVEL

SHtfTf*

KTj n

Hp-.,,

/5k

joj^)i—

SCHMlTT
|TRIG««I

DIGIT SELECT
DIGIT AOORESS

lEvEi.

E2H) «i

) 22 TB

SELECT

"»

~l(gv 1

>OI SK

> 23 TB

SELECT

*B

CI. C2M

Model 5304A
Maintenance

Table 9D-5-1. In-Cabinet Performance Checks

1. CHK

mode

and

Time Interval Holdoff.

a. Set

5300A

OSC

switch

to INT.

b.

Mate 5300A

to

5304A

and

ensure

ie

casting latches

at

rear

of

5300A

are

latched.

c.

Connect

ac

power

to

5300A

ac

receptacle.

d.

Turn

ac

power

"on"

with 5300A SAMPLE

RATE slightly

cw out of OFF.

e. Set

COM-SEP-CHK

to CHK;

"Function"

switch

to

FREQ

A,

AUTO. Display

should

be

10.0000

MHz +1

count.

f. Set

"Function switch

to T. I. A to B,

.1

psec. Press 5300A RESET switch;

the

5300A display should

be

about

.2

psec

(200

nsec residual holdoff).

It may

also

be

.0/jsec.

g. Set the

DELAY slightly

cw out of the de-

tent position. Display should

be

approxi-

mately 100/jsec.

h.

Adjust

the

DELAY control

cw

until

maximum setting

is

reached. Display

should

be

about * OOOOO.O

/JS (* =

OVER-

FLOW) (100,000.0 jL/sec).

i.

Repeat steps

g and h for the

following

ranges; display should

be as

listed.

T. I. A to B

Approximate 5300A Display with

DELAY control:

ccw out of

Detent

max. cw

1

[j.sec

000100 p.sec

100000 jjisec

lOjosec

0000.10

MS

0100.00

MS

1 ms

00000.0

MS

00100.0

MS

1 ms

000000

MS

000100

MS

10 ms

0000.00

s

0000.10

S

2.

FREQ A Mode.

RANGE:

dc

coupled:

0 to 10 MHz.

ac

coupled:

100 Hz to 10 MHz.

Sensitivity

as in

Table 9D-1-1.

Obtain following test Equipment:

HP 651B

Test Oscillator

HP

11048B 50-0hm Feed-Thru

Termination

Table

5-1 in the

5300A portion

of the

manual

and

Table 9D-5-1 lists equipment used;

equipment with equivalent characteristics

may be

used.

a.

Connect

651B

50-0hm OUTPUT through

the

50-0hm feed-thru

to

5304A

"A

INPUT" connector.

Set

5304A "Func-

tion" switch

to

FREQ

A,

AUTO;

set

COM-SEP-CHK

to SEP,

ATTEN

to XI,

AC-DC

to AC,

SLOPE

to +,

LEVEL

to

PSET

or

adjusted until a stable count

is

displayed.

b. Set

65IB

to

frequencies

and

output

levels listed below: Display should

be

as

listed.

3.

FREQ A Mode, Pulse Measurements.

RANGE: decoupled:

0 to 10 MHz

Sensitivity

as in

Table 9D-1-1.

Pulse Width:

40

nsec minimum

Obtain

the

following test equipment:

HP

Model 222A Pulse Generator

HP

Model 11048B 50-ohm Feed­thru Termination
HP

Model

180A

Oscilloscope

BNC Tee

Connector

a.

Connect equipment

as in

Figure

A.

651B

OUTPUT

mV rms

65IB FREQ

Hz

Approximate

"Function"

(sec)

Approximate Display

+ 1

Count ± Accuracy

of

source

25

10 Hz

10

00010.0

Hz

25 10 kHz

10

10000.0

Hz

25 100 kHz 1

100000

Hz

25

1 MHz .1

1000.00

kHz

50

10 MHz

AUTO

10.0000

MHz

9D-5-16

Model 5304A

Maintenance

Table 9D-5-1. In-Cabinet Performance Checks (Continued)

Figure

A

Figure

H

HP

2??A

HP

iBuA

CHAN

A

VtRT

IN

PULSE

OUTPUT

oNC TEE

HP

S300A

HP

5304A

TO

CHAN

A

soft

FEEDTHRU

b. Set

222A

for "+"

PULSE POLARITY;

40

nsec pulse width;

150 mV p-p as

monitored

on

oscilloscope.

c.

Monitor 222A pulse output with oscil-

loscope

and set REP

RATE

for 10 Hz.

d. Set

5304A Channel A controls

as

follows:

ATT EN

switch

to XI

AC-DC

to DC

SLOPE

to +.

LEVEL

to

PSET

or

adjust until

a

stable count

is

displayed.

e.

5300A display should

be

approximately

10 Hz.

f.

Repeat step c with 222A repetition rates

of 10 kHz, 100 kHz, 1 MHz and 10 MHz.
The

5300A display should

be the

same

as the

222A repetition rate setting.

g. Set

222A PULSE POLARITY

to

Set

5304A Channel A SLOPE

to -.

Repeat steps b through

f.

4. PER AVG A

Mode.

RANGE:

10 Hz(.l sec) to 1 MHz (I

/jsec).

Obtain

the

following test equipment:

HP

Model

651B

Test Oscillator.

HP

Model 11048B

50 OHM

Feed-thru

Termination.

a.

Connect equipment

as

shown

in

Figure

B.

b. Set

5304A Channel A controls

as

follows:

1.

"Function" switch

to PER AVG A.

2.

ATTEN

to XL

3.

AC-DC

to AC.

HP 6510 HP i BOA

CHAN

A

VERT

IN

NPUT

BNC TEE

HP

5300A

HP

5304A

10MHz

FEEDTHRU

4.

SLOPE

to +.

5.

LEVEL

to

PSET

or

adjusted until

a

stable display

is

obtained.

c.

Monitor

the

oscilloscope

and set 651B con-

trols

for 10 Hz, 100 mV rms

output.

d.

Display should

be

approximately * 00.0000

MS , C <* =

OVERFLOW)

(100

msec).

e.

Monitor

the

oscilloscope

and set 651B for

the

following frequencies; display should

be as

listed.

65 IB
10 kHz

100 kHz

I MHz

5300A/5304A

100.000/isC

10.0000 fjsC

01.0000 MsC

NOTE

Periods averaged

are

automati-

cally selected

to

provide maxi-

mum

resolution.

5. T. I. A to B

(Time Interval) Mode.

RANGE:

500

nsec

to

10,000 seconds.

Obtain

the

following test equipment:

HP

Model 222A Pulse Generator

(2

required).

HP

Model 11048B 50-0hm Feed-thru

Termination

(2

required).

HP

Model

180A

Oscilloscope.

BNC Tee

Connectors,

(3

required).

a.

Connect equipment

as

shown

in

Figure

C.

9D-5-17

Model 5304A

Maintenance

Table 9D-5-1. In-Cabinet Performance Checks (Continued)

HP

??2A

PULSE

OUTPUT

,

n

Figure

C

. Z

AXIS

. * 1 L

INPUT

i pJ

HPM 30A

I80IA
A T f

182 IA

50A

FEEOTHRUS

BNC TEE

HP

222A

EXT

TRIG

INPUT

PULSE

OUTPUT

b.

While monitoring generator

No. 1

output

with oscilloscope,

set No. 1

generator

controls

as

follows:

1. REP

RATE

to

Ik-10k with adjust-

ment centered.

2.

PULSE WIDTH

for .2 /^sec

pulse

at

2 V

amplitude.

3.

PULSE POLARITY

to +.

c.

While monitoring generator

No.2

output

with oscilloscope,

set No. 2

generator

controls

as

follows:

1. REP

RATE

to

MAN/EXT

+.

2.

PULSE POLARITY

to +.

3.

PULSE WIDTH

for .2

A/sec pulse

at

2 V

amplitude.

4.

PULSE DELAY

for .5

/jsec.

d. Set

Oscilloscope DISPLAY control

to

A + B to

monitor

No.2

pulse position.

e. Set

5304A control

as

follows:

1.

ATTEN (both channels)

to XI.

2.

AC-DC (both channels)

to DC.

3.

SLOPE (both channels)

to +.

4.

LEVEL (both channels

to

PSET.

5.

COM-SEP-CHK

to SEP.

30IA 182IA

,

BED

T

INPUT

INPUT

I

DELAY

•

• OUT l

l 1

A

INPUT

D

SOft

fl

FEEOTHRUS

II

A

BNC TEE

DELAYED

PULSE

f.

5304A should display 00000.5 psec;

verify time interval with oscilloscope.

g.

While monitoring oscilloscope, adjust

No.

2

generator PULSE DELAY

for

time

intervals from

.5

/jsec

to 150

/jsec. 5300A

Display should

be the

same

as

oscil-

loscope display.

h. Set No. 1

generator

REP

RATE

to 100-

lk and

adjustment centered.

i.

While monitoring oscilloscope, adjust

No. 2

generator PULSE DELAY

for

time

intervals from

150

/jsec

to

2000 /jsec.

5300A display should

be the

same

as

oscilloscope display.

j. Set No. 1

generator

REP

RATE

to

10-100

and

adjustment full

ccw.

k.

While monitoring oscilloscope, adjust

No. 2

generator PULSE DELAY

for

time

intervals from 2000 /jsec

to

6000 /jsec.

5300A display

and

oscilloscope display

should indicate

the

same time intervals.

NOTE

Measurement resolution

may be

adjusted from

.1

|j.sec

to 1

msec

with

the T.I. \ to B

switch.

9D-5-18

Model 5.J04A

Maintenance

Table 9D-5-1. In-Cabinet Perfomrance Checks (Continued)

6.

Totalizing (OPEN/CLOSE

A)

Measurements.

Obtain

the

following test equipment:

HP

Model 65IB Test Oscillator.

HP

Model U048B 50-0hm Feed-thru

Termination.

a.

Connect

651B

50-0hm output,

set to

10 Hz at 100 mV rms, to

5304A Chan-

nel A

INPUT connector.

b. Set

Channel A ATTEN switch

to X100,

AC-DC

to AC;

SLOPE

to • and

LEVEL

toPSET.

c. Set

"Function" switch

to

OPEN/CLOSE

A.

d.

Instrument gate

is

controlled

by

oper­ator when OPEN/CLOSE A pushbutton
is

pressed.

e.

Press OPEN/CLOSE A switch;

ft MX) A C

lamp will

tum on;

adjust Channel

A

ATTEN

to Xl;

5300A display should

accumulate.

f. To

stop 5300A from accumulating, press

OPEN/CLOSE

A. To

continue accumu-

lation from

the

number displayed press

OPEN/CLOSE

A,

otherwise press

RESET

to

clear display.

90-5-19

Model 5304A

Maintenance

PERFORMANCE CHECK TEST CARD

Hewlett-Packard Model 5300A/5304A

TIMER/COUNTER
Serial

No -

Test Performed

by

Date

Description

1.

CHECK Mode

and

Time Interval Holdoff.

Display

is 10 MHz ±1

Count.

Hold

off as in

Table 9D-5-1, item

1,

step

i.

2.

FREQAMode.

0 to 10 MHz dc

coupled.

100 Hz to 10 MHz ac

coupled.

3.

FREQ A Pulse Measurement Mode.

Channel

A; 0 to 10 MHz

40

nsec minimum.

4.

PERAVGAMode.

10 Hz (.1 sec) to 1 MHz (1

|j.sec).

5.

TIME INTERVAL Mode

500

nsec

to

10,000 seconds.

(tested

to

6000|osec).

6.

Totalizing (OPEN/CLOSE

A).

Controlled accumulation.

Check

•

•

•

•

•

•

9D-5-19a

PARTS

LIST

Model 5304A

Replaceable Farts

SECTION

IX I)

5304A TIMER/COUNTER

SUBSECTION

VI

REPLACEABLE PARTS

9D-6-1. INTRODUCTION

9D-6-2. This subsection contains information

for
ordering replacement parts. Table 9D-6-1 lists parts
used

in the HP

5304A.

9D-6-3. ORDERING INFORMATION

9D-6-4.

To

obtain replacement parts address order

or

inquiry

to

your local Hewlett-Packard Sales

and

Service Office

(see

lists

in

Section

VI,

5300A Manual

for

addresses). Identify parts

by

their Hewlett-

Packard part number.

To

obtain a part that

is not

listed, include:

a.

Instrument model number.

b.

Instrument s ?rial number.

c.

Description

of the

part.

d.

Function

and

location

of the

part.

assembly

mot ii i

iui(>

I V
i-apacitor
i

Duplet

diode

((•-lay

Inn

(It |i «

.-.ll'.ll.l

ll n,

I11ISC

• U 11 "III.

}>.«11

HI Fl

HKNCK

DKSIGNATOHS

F 1 Use

MP

mechanical part

U

integrated circuit

Fl.

lllter

P

plug

V

vacuum, tube, neon

IC

integrated circuit

W

transistor

Imllt, photoi

e||, etc.

.1

jack

It

resistor

VH

voltage regulatoi

K

i

elay

KT

thermistor

vy

cable

1.

inductor

S

switch

X

socket

I>

loud speaker

r

transform!!

Y

crystal

M

meter

TB

terminal board

/.

tuned cavity.

MK

unciophone

TP

test point

network

AHBHKVIATIONS

A
AFC
AMI'I

HFO
UK CI
BH
HI'

Uh.S
i two

c i
CKH
('.Mil
COt F
COM
COM I'
COM I'l
CONN
CI'
CUT

DKPC
I)H

I

LKCT
I

NCAP

I XT

F

FH

Kll. II

FXI)
G

GF
til.

OKI)

ampe

r e»
automatic liitjin'iicy control
amplilier

in .ii 11 H|ui iu \

oscillator

In i v

Ilium copper

1)1

Hill I 1)1.1(1

iMhdpass
brass
liai kward wave osnllatoi

>

ountcr-dockw

isi

••••ramie
cabinet mount only
coefficient
coin

mon
lompi iMlion
complete

iniimi'loi

cadmium plat<
i

.itliodi

-1 ay

lulu

clockwist

d«

posited

cat lmn

drive

. I.

clrolytic

encapsulated

• \ii i nal
laiads

ll.it

In ad

llllisler

In ad

fiM-d

giga
germanium
glass
ground(ed)

II
HDW
III X

lie;
iii<

ii/

IF

IMPC.
INCI)
INC!

INS
INT

1.11
I.IN
I K U ASH
UM,

LPF
M

MM.

Ml I FKM
MKT OX
MFK

Mil/
MINAT

MOM
MOS

MTG

MY

henries

ha id v. an

hexagonal

mercury

hour(s)

In rt/.

intermediate

Ini|

impregnate

<1
incandescent
Hit

ludc(s)
insulatioli(ed)
internal

kil.

KHHI

NK

M PI.

I' ll

hand
linear taper
lock washer
logarithmic taper
low

pass

11

Iter

mi 111 10

3

nieu

I0'

1

metal

him
metallic oxide
manulactui

<r
mega hertz
miniatui

<
inonientary
metal o/.idi- .suhstiat)
mounting
"mylai"

iiano (I0'9)
normally closed
neon
nickel plati

N 'O
Nt)M
NPO

NPN

NH FH

NSH

OBI)
(III
OX

I'
PC
I'F

I'll

Biti
PHI
PIV

I'NP

P O

POLY

POKC
PUS

POT

PT

PWV

HI CT
HF
HII

12

normally open
nominal
negativi positive

/i n

(/.ero tempct atui

•
coefficient)
ncgative-positiv<

­negative
not

recommended

loi

In Id

replacement

not

separately

replaceable

order

liy

description

oval head

oxide

peak
printed circuit
picolarads

10'
farads
phosphor bron/i

Phillips
peak inver.se voltaic
positivi - negative
pohitivc
part

of

polvsty ri'iu

porcelain

posit ioii(s)

potent lometel

peak-to-peak

point
peak woiking voltage

• •

ctifier

radio

Ii

et|ueiicy

round head

m

right hand

HMO
HMS
HWV

SB
SCH
St
SKCT
SKMICON
SI
Sll.
SI
SPG
SPI
SST
SH

STL
TA

Tl)

TGI

rill)

Tl
TOL
TH1M
T\V I

i;

VAH
VI)C\V

yy

yy

uiv

\y\y
\y o

i ack

mount only

i. M ii mi .in

squai

1

reverse

woi

king

voltage

slow -lilow
.sci i «

selenium
se.'tionfs)
semiconductor
silicon
silver
slide
spring
special
stainless steel
split ring
sleel

tantalum
time delay
toggle
tin cad
titanium
tolerance
ti

immi

r

tiaveling wave

tu

micro

I0-

6

vari.ilih
dc

*oiktlit; volts

with
waits
working i ivcrse
volfagi
wirewound
w

itliout

9D-6-1

Model 5304

A

Replaceable Parts

Table 9D-6-1. Replace Parts

Reference

Designation

HP

Part Number

Qty

Description

Mfr

Code

Mfr

Part Number

A1

05304 60001

i

BOAHD ASSY TIMR INTERVAL

(Not

available

for

field

28480

05304 60001

replacement

or

vile) (Includes

A2.

05304 6000?)

A1C1

01

w-ooso

2

C:FK0

CER 1000 PF

*80-20* 1000VDCW

562 *9 C 06 7 B1^2f

102/S26-CDH

A1C2

0150-0050 CsFXD

CER 1000 PF

*80-201 1000V0CW

56289

C06

7B102F102/S26-CDH

A1C3

0150-0075

6

CsFXD

CER

*700

PF

*100-20* 500V0CW 72982

851

-OQO-X5UO-* 72*7

A1C*

0150-0075 CsFXO

CER

*700

PF

*100-20* 500VDCW

*2982 851-010-X5U0-*

72/

AIC5

0180-0106

3

CsFXD ELECT

60 UF 20*

6VDCW

28*80

01P0-0106

A1C6

0180-0106 C:FXD ELECT

60 UF 20*

6VDCW 28*80 O180-0106

AIC7

0180-0197

2

C: FXO

ELECT

2.2 UF 10*

20VDCW

562 H9

150D225X9Q20A2-0VS

A1C8

0180-0197 CsFXD FLECT

2.2 UF 10*

20V0CW 56289

150D225X«»020A2-OVS

A1C9

01

50-00

75

CsFXO

CER

*700

PF

*100-20* 500V0CW 72982 851-000-x5u0-*

72/

A1C10

0150-0C75 CsFXO

CEP

*700

PF

*100-20* SOOVOCW 72982 851-000-X500-*

72/

A1C11

0180-0106

C: FXO

ELECT

60 UF 20*

6VDCW

2

8*80 0180-0106

A1C12

0160-0168

I

C:FXD

MY 0.1 UF 10*

200V0CW 56289

1°2P10*92-PT

S

AIC13

0160-2204

1

CsFXO MICA 100PF

5* 721 *6

PDM15F10IJ3C

A1C1*

01*0-0198

19

CSFXO MICA

200 PF 5* 721 36

RDM1SI

201 J3C

A1CI5

0180-1702

I

CSFXO ELECT

180 UF 20*

6VDCW

562 89

150018/X0006R2-OYS

AICRI

1901-0376

* 1)1

OOFs

5 II IC IN 35 V

2«*80

1901 - 0 4 76

AICR2 1901-0376 OIOOE sSILICON

35V

2

8*80 1901-03

76

A1CR3 1901-0376 DIODE SSILICON

35W

28*80

1

901-13

76

A1CR* 1901-0376

OIOOE sSII ICON

35V

2 8*. 80

1901-0376

AICR5 1901-00*0

10

OIOOE:SILICON 30MA 30WV

0 7261

FOG1088

A1CR6 1901-00*0 OIOOEsSILICON 30MA 3CWV

0 72 61

FOG!188

A1CR7 1901-00*0 OIOOESSILICON

30 MA

30WV

0/261

FDG10

88

A1CR8 1901-00*0 OIOOE

sS

ILICON 30MA 30WV 07263 FDG1088

A1CR9

1901-00*0 OlOOEsSILICnN 30HA »OWV 07263

F DG10 88

AICR10

1901-00*0 OIOOESSILICON 30MA 30WV

07263

»

0G1O88

A ICR 11

1901-00*0 OIOOE:S1LI

CON

30MA 30WV 07263 FDG10B8

A1CR12 1901-00*0

UIOOESSILICON 30MA 30WV

0 72 63

F0G10

8B

A1CR13

1902-0031

2

OIOOE BREAKDOWNS

12.7V 5*

28*80

I

902-00

31

AIC4I*

1902-0031

DIOOE BREAKDOWNS

12.7V 5* 2

8*80

I

902-0011

A1CR15 1902-31*9

1

OlOOf BREAKDOWNS9.09V

5*

28*80

1902- 31 *•)

A1C4I6 1901-00*0 OIOOESSILICON 30MA 30WV

0

7263

»

Dr.10HH

A1CR1 7

1901-00*0

01

OOFSSILICON 30MA 30WV

07263 FDG1088

A1CR1 8

1901-0*60

1

DIOOFSSILICON 3-JUNCT1UN STABISTOR 03508 STBS

' 3

A1E1

1810-00*1

2

RsNETWORK,8

RES. 2.7K OHM 5*

28*80

1B10-00*!

A1E2

i810-00*1

Is S NF T

WORK

, 8 RES. 2.7K OHM 5*

28*80 1810-00*1

A1P1

1251-2

*56

1

CONNECTORsR

t P, 50

CONTACT 7*868

5

7-20500-

31

A101

0530*-»0001

2

TR

ANSISTORsFET MATCHED 28*80 0530*- 80001

Aia? 0530*-8000I

TRANS I STOP sFET MATCHED

28*80

0530*- 80001

A183

(PART

OF A1Q1)

A13*

(PART

OF A102)

'

A105

1853-0036

6

TSTPsSI

PNP 801 31 2N

<90h

A1Q6

1853-0036 TSTRsSI

PNP

80131

2N3906

A137

1853-0036 TSTRsSI

PNP

80PI

2N3906

A108

1853-0036 TSTRsSI

PNP 80131

?N1906

A109 1853

0036

1

TSTR

SI NPN 80131

2N3906

A 1U10 1854

0246

TSTR

SI NPN

80131

2N3643

A1Q11

185*-009*

*

TSTRsSI

NPN 801 <1

2N'6*6

A1012

185*-009* ISTRsSI

NPN

80 m

2N36*6

A1QI3 185*~0071

*

TSTRsSI NPN(SELECTED FROM 2N370*) 28*80

1 8*)*- 00 71

A1Q1*

185*-0071 TSTRsSI NPNISELECTFD FROM 2N370*)

28*80

1

8S*-0O71

A1915

IB

5*-O0

71

TSTRSSI NPN(SELECTED FROM 2N370*) 28*H0

1

85*-"07I

A1Q16

IB5*-0071 TSTRsSI NPNt SELECT

FO

FROM 2N370*)

28*80

1 85*- On 71

A1Q17

185*-009* TSTRsSI

NPN

80 in

2N16*

b

AIQ18 185*-009* TSTRsSI

NPN

801 31

2N36*6

A1Q19 •

1853-0036 TSTRSSI

PNP 80111

2N390b

AIR 1

0683-10*5

3

RSFXD COMP

100 K

OHMS

5* 1/*W 01121 CB 10*5

A1R2

0683-1

0*5 R S FXO

COMP

100K

OHMS

5* 1/*W

01121

fB 10*5

A1R3

0683-2215

2

RSFXD COMP

220 OHM 5* l/*W

01 121 CB 2215

AIR* 0683-2215

R

SFXO COMP

220 OHM 5* 1/*W

01121 CB 2215

A1R5

0698-3159

*

RSFXO

MET FLM

26.IK

OHM 1* 1/8W

28*«0

0698-315Q

A1R6

0698-3159

RSFXD

MET FLM

26.IK

OHM 1 * 1/8W

28*80 0698-31SQ

A1R 7

0698-3159

RSFXD

MET FLM 26.1K OHM 1* 1/8W

28*80

0698-

31 5«)

AU8

0698-3159

f. S FXO MET FLM

26.IK

OHM 1< 1/RW

28*80 0698-3159

A1R9

0683-1055

5

RSFXD COMP 1 MEGOHM

5* l/*W

01121

CB 1055

AIR 10

C683-1055

RSFXD COMP I MEGOHM

5* 1/*W

01121 fB 1055

A1R11

0683-5125

12

RsFXO COMP

5100 OHM 5* l/*W

01121 CB 5125

AIR I 2

0683-5125 RSFXO COMP

MOO OHM 5* 1/*«

01121

Cr 5125

A1R13

0683-5125 RSFXO COMP

5100 OHM 5* 1/*W

01 121

C« 5125

AIR1* 0683-5125

RSFXD COMP

5100 OHM 5* 1/*M

01121 CB 5125

AIR 1 5

0757-0280

*

RSFXO

MET FLM IK OHM 1* 1/8W

28*80

0 75

7-0280

AIR 16

0698-3***

*

RSFXO

MET FLM 316 OHM 1* 1/HM

28*80 0698-3***

AIR 1 7

0757-0280 RSFXO

MET FLM IK OHM 1* 1/8W

28*80

0 75 7-02 80

AIR 1 8

0698-3*** RSFXD

MET FLM 316 OHM 1* 1/RW

28*80

0698-1***

A1R19

2100-1768

2

RsVAR

WW 70 OHM 5*

TYPE

H 1W

28*80

2100-1768

See

introduction

to

this section

for

ordering information

9D-6-2

Model 5304A

Replaceable Parts

Table 9D-6-1. Replaceable Parts (Continued)

Reference
Designation

HP

Part Number

Qty

Description

Mfr
Code

Mfr

Part Number

A1R20

2100-1768

PSVAS

WW 20 OHM 5* T VPF H 1W

28480

2100- 1 '68

AM2I

0757-028C

P:FX()

MKT »LM IK OHM 1* 1/RW

284 8r

r757-P?»0

AM22

06

<>8-1444

rt:FXf)

MET »IH 316 OHM If I/8W

2 84 °0

n»,q8- 3444

Al)<>

»

•5757-0?

80

P :f X0 MI T FLM IK OHM 1* 1 / 8W

284 80 075

7-028"^

AM24

-#,•>8-3444

R : F X 0 MFT FLM 316 OHM 1* I/8W

28480

0608-3444

AIS/^,

06P 3- I

00*>

2

o;FXl) COMP

10 OHM 5t 1/4W

Oil 21

cn

i005

AM26

068

3-1005

R:»X0 COMP

10 OHM 5? |/4W Ol 121

CR 10C«,

AU/7

0683- 680**

2

RtEXO COMP

68 OHM 5* I/4W

01 1 21

CB

6805

AIR28

06P3-6805

R:FXD COMP

68 OHM 5* I/4W 01121

CB

6805

Al^7

068

3-?715

2

n:rxn COMP

270 OHM 5* i/4w 01121 CO 2715

AM JO

C6 8 3-2 71 5

R:FX0 COMP

270 OHM 5* 1/4W 01 1 21

CB 2 715

AM 31

*683-5105

2

R:FX0 COMP

51 OHM 5T 1/4W 01 121

CB 5105

A |R 32

C6P3-5I15

2

PlFXO COMP

510 OHM 5* 1/4W 01121

CB 51 IS

AHU

0683-51

I 5

Birxo COMP

5 10 OHM 5* 1/4W 01 121 CB M 15

AH 34

P6P3-5105

P:f XO

COMP

51 OHM 5T 1/4W 01121

CB 51 ns

AM35

OG83-4715

2

RlFXO COMP

470 OHM 1/4W 0! 121 CB 4715

A13 36 069

3-1025

P:FXD COMP

1000 OHM 5? I/4W

01121

CB 1025

AM 3 7

0683-4715

3

R:FXD COMP

470 OHM 5* 1/4W 01121

CB 4 7 15

AM 3t)

06*3-10?5

R: F X 0

COMP

10O0 OHM 5* 1/4W 01 121 CB 1325

AM 39

0683 2425

1

R FXD

COMP 2400

OHM 5% 1 4W

FACTORY SELECT

01 1 21

C8 24 .' 5

A|R<iJ C6B3-5125 »:FXD COMP

51 *>" OHM 5T 1/4W

CI 121

CB 512*.

A1UI

P6P 3-512 5

R:FXD COMP

5100 OHM 5* 1/4W 01 1 21

CB 51 2

t>

A1HV

0693-24

35 1

":rxn

COMP

?4K OHM 5* |/4W

ri Ui

f B 24 35

AlUf

0683-1055

R : F XD

COMP 1 MFC,OHM

5* 1/4W

01121

CB 1055

AM4«.

0683-5125

R : F X D

COMP

5100 OHM 5* |/4W

01 121

CB 5125

AM<.i

n

68 3-512 5

P : 1 XO

COMP

5100 OHM 5* 1/4W

•>1121

r« 5125

AM<ib

068

1-3075

3

OJFXI) COMP 3000

OHM 5* 1/4W OH 21

CB '>

A1RW

0693-1045 PlF-XC) COMP

100K

OHMS

5* 1/4W

•1 121

IB 1045

AM4BI PART

OF

1801-0041 RFXD2

7K

PART OFE1.E2

28480

1801-01)41

AM60f

El, E2

AMSl 0693-1025 P:IXD COMP IO0O

OHM ** 1/4W

02121

CB 1025

AM62 0683-3025 RtlXD COMP 3000

OHM 5* 1/4W

n

l 1 21

CB

3025

AM6 i

0683-51?5 R:FXD COMP

5100 OHM 5* 1/4W

"1121

CB 5125

A M 64

0683-1035

3

R:FXI) COMP

1 OK OHM 5* 1/4W

"11 21

CB l'MS

AM65

0683-S125

R : F X 0

COMP SlfO

OM* 5t 1/4W

01 121

CB 5|2'

AM 66

0683-5125

R:FXD C0MO 5jpo

OHM 5t 1/4W

01121

CB 5125

AM6 7

0683-5125 H:FX0 COMP

5100 OHM 5* J/4W

01121

CB 512 5

AM6B

069

3-1035

R:FX0 COMP

1 OK OHM 5* 1/4W

01121

CB 10 35

A1R69 0683-1035

RlFXO COMP

1 OK OHM '<T 1/4W

CI 121 C H 10 35

AM 70 f

683-3025 o:FXO COMP <000

OH* bt |/4W 01121

CB

3025

A 1J I

1820-044!

1

IC

:DUAL 5-INPUT NANO GATF

04 '1 1

SC. 81 ' 1 PK

AI j? 1

8?0-00*<4

2

IC:0TL JIJAI) 2-INPT

GAT F

2

8480

1820-0004

A1 J 3

1P20-0C61

I

IC :TTL

DUAL 4-INPT

POS

NANO GAFF 312«»f

c

N4344

Al dV

1820-C077

4

IC : T T I

OUAL

0 IF

(LATCH1

"1 205

SN4354

AIJ5 1820-0273

2

!C:OTL 'OUAl) 2-INPT

ANO

GATF 28480

182°-0?73

A1U6

1820-0014

ICtOTL QUAD 2-INPT GATE

2 84 80

|

»?0-C0f»4

A 1J 7

19

20-00

7 7

1C : TTl.

HUAL

0 F F

ILAICH1

31 2'''-

SN43S4

A1UB

I8'0-P0

77 tC:T TL

DUAL

0 IF 1

LATCH!

0129*

"•-N4

A1 JH

1820-006

8

2

IC : T TI

TRIPLE 3-INPUT

POS

NANI) GATT

12^40

SN '4| 0*j

A1U10

1820-^307

1

IC:D1GITAL

OTL HEX

INVEPTFR

2

848f

1820-0307

A1JI1

1820-0273 ICM1TI QUAD 2-INPT

ANO

GATF 28480

I

8_>0-"2

' <

AJJ12 1820-0370

1 IC :T TL

UUAI)

?-

INPT NANO GATF

11295

SN44

A1J 1 i

1820-0174

2

INTEGRATED CIRCUIT:TIL

Hrx 1NVE

RTER

295

SN"111

A1 III <i

18

20-0054

2

IC : T T L

OUAO 2-INPUT NANO GATE

01

2«>5

r

N4»4

'

A1J15

l«?0-0077

IC : T TL

OUAl

0 FT 1

LATCH)

H )o«>

•=N4 »«<4

A1 J16

1820-0068

IC : 1 TL

TRIPLE 3-INPUT

POS

NANO GATE

1

2040

ru\

A1J1 7

1820-0174 1NTEGRAT

10

CIRCUIT:TTl'"FX 1NVIRTIP

012^5

SN8199

A1JI 4

18

20-0-154

IC 3T TL

OUAO 2-INPUT NANO GATE

n i *

N434?

A IJ 1 9

1820-051

I

1

IC : TTl

OUAO 2-INPT F./ATI

01 2°5

SN2C572

A1J2 0

18 *0-0 32 8

1

IC : T TI

QUAD 2-INPT

NOW GAT I 01

?«»5

r

N4«».

7

A1J 21

1820-057H

1

1C:01G1T

Al

OUAl 2-INPT OR/NUR GATE

04 71 3 SC. 7 38 ?PK

A1 J??

1820-057'

1

1C:0IGITAL

TTL HEX

1NVERFFR

n i

?«»«.

SN22

7 •«;

A1J2 3

1820-0253

2

INTIGRATFO C IRCU1T

: |) | . I T Al ECL

OUAl

04 71 3

MC. ir t'-p

A1D24

192P-0253

INTEGRATED CIRCUIT:OIGITAl

ECL

OUAl

04 71 « Mf 1

A2

05304-00003

1

IIOARD ASSY: ATTENUATOR

2 84 H f

05304-60003

A2XA Mis>c

".5

300-20007

1

PIN

CONNECTOR GROUP

PC

Contains

36 pc

right angle

284 PO

0 5 3 00 -2 n00 7

CONNECTORS Only

14 are

used

A2C 1

0160-2250

2

C:l XO O R 5.1 PF

500VDCW

72982

3 01 -000

-COHP-

*'• 191

A2C2 "l6^-2250

C:FXD

CI R 5.1 PF

500V0CW

72 982 101

-ooo-rfHti

A2: •

C140-02C«

2

CtFXD

M|CA 680 PF *T

721 16

0f)M15f

t-Ml JV

A2t'«

01 40-0 "'Of C:F X0

MICA

680 PI" •>*

721

RDM15I »>«l

1 «(

A2C 5

0160-2!^''

2

C: F X 0

MICA

PI 5*

300VDCW '8480

r 16P - .

A2Ct>

01 60-2 !«<>

( :»X0

MICA

"<0 PF 5*

300VOCW

28480

0160-.!•'>

A2C 7

-> | «;<• - r p J r-

C:F XD CER 4'no PI

*tC3-20T 5Q0VDCW

72982

«•-1 - T( - *•

u(i-<,

t>;

A2C8 015C-CC7S

ClFXD

CFP 4 7O0 PI

•1C7-20* 50CVDCW 7298?

H51 11

Sff

introduction

to

llns section l«»r ordi-rinu information

*

9D-6-3

Model 5.304A
Replaceable Parts

Table 9D-6-1. Replaceable Parts (Continued)

Reference
Designation

A2J1
A2J2
A2SU
A2R2
A21 3

A2R4
A2«5

A2^ 6

A24 7
A2R8

A2*9
A2R10
A2S2

A2S3
A2S4

A2S5
A2S6
A2S7

J2
RAJ

HP

Part Number

1250-1163

1250-1163

06*13-91

*5

C6P3-9145

06B3-9125

06B3-9125
06

98-35

76

C6

98-3576
0683-1055
0683-1055

2100-3228

2100-3228
3101 1598
3101 1598
3101 1596

3101 1596
3101 1596
3101 1596

1250-0083
0160-0182

1250-0083
2100-30

78

3101-1159
3100-2922

05304-60004

03

70-1005

0370-1100

03

70-2102

05245-2016

05

300-40003

05300-40004

05301-20005

05300 80004

05304-00001
05

304-00004

0624 0208

05300-20010

5040 7032

Qty

Description

CONNf CTDP

:RF 8NT.

INPUT

CONNf CT0R:Rr

RNC

INPUT

R:IXD COMP

91 OK OHM 5* 1/4H

R:FX0 COMP

910K OHM 5* 1/4H

R:fX0 COMP

9100 OHM 5* 1/4H

R:FXD COMP

9100 OHM 5* 1/4W

R:FXD COMP

11OK OHM 5* 1/4H

R: FXO

COMP

110K OHM 5t I/4H

P:FXD COMP 1 MEGOHM

5* 1/4H

R:FXD COMP 1 MFGOHM

5* I/4H

K:VAR CERMET

1 OK OHM 10* I IN

R:VAR CERMET

10K OHM 10* I IN

SH|TCH:SLIDF 0P3T

0. 5A 12 SV

AC/DC

SH1TCH:SLIDE 0P3T

0.5A 125V

AC/DC

SW1TCH:SLIDE DPOT

0.5A 12 5V

AC/OC

SMITCH:SLIOE DPOT

0.5A 125V

AC/OC

SHIT

CH: SL IDE

OPDT

0.5A 125V

AC/DC

SW I TCH: SL 1 OF.

DPOT

• -5A 125V

AC/OC

CHASSIS PAPTS

CO:NFCTOP:BNC

C:FXD

47 pf, 5%,

300V

CONNECTOR:BNC
R:VAR COMP 1 MEGOHM

20*

I

PART

OF S 2 >
SHITCH:PUSHBUTTON SPOT
SHITCH:RCTAKY

(PAOT

OF R4 31

CABLE ASSY

MISCELLANEOUS PARTS
KNOB:JADF GREY
KNOB:JADE GREY

KNOB
COUPLER
SUPPORT:BOARD
GUIDE:SLIDE
STAND:I

ILT

COVER PLASTIC DUST PROTECTION

PANEI.: FRONT

PANEL:REAR

SCREW SELF

TAP. CAD

PLATE.

6/32 * 1/2"

CASE: ALUMINIUM CAST

FOOT REAR

Mfr
Code

2B4H0
28480
01121
01 121
01121

01121
28480
284 80

01 121

01 171

28480
28480
28480
28480
28480

28480
28480
28480

02660

14655

02660
28480

82389

28480

284 80
28480

28480
78480
28480

28480

28480

28480

284HU
284 80

28480

Mfr

Part Number

1250-1163

1250-1163
CH 0|45
f.B 9145
CB 11 25

CH 9125

0608-35

76

0698-35

76
CB 1055
CB 1055

2100-3228
2100-3228

3101 1598
3101 1598
3101 1596

3101 1596
3101 1596
3101 1596

31-221-1020

31-221-1020

2100- 30 78

1

OS-1051

3100-

2*>22

0

5304 60004

03

70-1005

0370-lino

0370-210?
05245-2016
05

300-4C003

05

300-40004
05301-20005
05300 80004

05

304-00001

05304-00004

0624 0208

05300-20010

5040 7032

See

introduction

to

this section

for

ordering information

9D-6-4

Model 5304A

Manual Changes

and

Options

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION

VII

MANUAL CHANGES

AND

OPTIONS

9D-7-1. MANUAL CHANGES

9D-7-2. Section

IX I)

applies directly

to

Models

5304A Timer/Counter having serial prefix number

1212A00467.

9D-7-3. NEWER INSTRUMENTS

9D-7-4.

As

changes

are

made, newer instruments

may

have serial prefix numbers

not

listed

in

Section

IX I).

The

manuals

for

these instruments will

be

supplied

with "manual changes" pages containing

the

required

information; replace

the

affected pages with

the

"replacement manual changes" pages. Contact

the

nearest Hewlett-Packard Sales

and

Service Office

for

information

if

this sheet

is

missing.

9D-7-5. OLDER INSTRUMENTS

9D-7-6. Changes

for

5304A instruments with serial

numbers 111(>A()0466

and

below

are

listed

as

replace-

ment pages

in

Table 9D-7-1,

7-2, 7-3, and

Figure

9D-7-1.

To

back date

the

manual,

do the

following:

Replace

the

5304A Title Page with

the

replacement

page containing Tables 9D-7-1

and 7-2.

Replace page

9D-6-3

and

9D-6-4 with replacement page containing

Table 9D-7-3

and 7-4.

Replace page 9D-8-5 with

replacement page containing Figure 9D-7-1.

9D-7-7. OPTIONS

9D-7-8.

No

options

at

time

of

printing.

90-7-1

Model 5304A

Manual Changes

and

Options

Table 9D-7-1. 5304A Section

IX I)

Timer/ Counter Title Page

SECTION

IX D

TIMER/COUNTER

5304A

SERIAL PREFIX:

1116A

This section applies directly

to HP

Model 5304A, Timer/

Counters having serial prefix number 1116A,

and

must

be

inserted into

the

5300A Measuring System Manual.

NEWER INSTRUMENTS

This Section with enclosed "Manual Changes Sheet(s)"
applies directly

to HP

Model 5304A Timer/Counters

having prefix numbers above 1118A.

OLDER INSTRUMENTS

Changes required

to

back-date this Section

for

older

instruments

are in

Section

IX 1),

Subsection

VII.

Copyright HEWLETT-PACKARD COMPANY

1971

5301

STEVENS CREEK BLVD . SANTA CLARA. CALIF 9505,0

Model r»:wMA
Manual Changes

and

Options

Table 9D-7-2. Table

of

Contents

TABLE

OF

CONTENTS

Section Page

IX D

5304A Timer/Counter

Subsection

I

GENERAL INFORMATION

91) 11

91)1-1. Introduction 91)1-1
9D-1-2. Description 91)1-1

91)1-4. Purpose

and Use of

Section

IX I)

91)1-1

91)1-6. Instrument Identification 91)1-1

91)1-8. Manual Changes

and

Options 91)1-1

II

INSTALLATION 9D-2-1

9D-2-1. Unpacking

and

Inspection 9D-2-1

9D-2-3. Storage

and

Shipment 9D-2-1

9D-2-5. Installation

and

Removal

of

Plug-On 9D-2-1

9D-2-8. Portable Operation 9D-2-1

III

OPERATION 9D-3-1

9D-3-1. Operating Information 9D-3-1

IV

THEORY

OF

OPERATION 9D-4-1
9D-4-1. Introduction 9D-4-1
9D-4-4. Input Amplifiers 9D-4-1

V

MAINTENANCE 9D-5-1

9D-5-1. Introduction 9D-5-1
9D-5-3. Recommended Test Equipment 9D-5-1
9D-5-5. Instrument Access 9D-5-1
9D-5-7. Periodic Maintenance 9D-5-1
9D-5-9. Maintenance

and

Repair 9D-5-1
9D-5-13. Instrument Troubleshooting 9D-5-1
9D-5-16.

DC

Balance Adjustment 9D-5-3

VI

REPLACEABLE PARTS 9D-6-1

9D-6-1. Introduction 9D-6-1
9D-6-3. Ordering Information 9D-6-1

VII

MANUAL CHANGES

AND

OPTIONS 9D-7-1
9D-7-1. Manual Changes 9D-7-1
9D-7-3. Newer Instruments 9D-7-1
9D-7-5. Older Instruments 9D-7-1
9D-7-7. Options 9D-7-1

VIII CIRCUIT DIAGRAMS 9D-8-1

9D-8-1. General 9D-8-1

9D-7-4

Model 5304A

Manual Changes

and

Options

Table 9]>-7-8. Replaceable Parts

Reference

Designation

HP

Part Number

Qty

Description

Mfr
Code

Mfr

Part Number

A1K20

7100-1768

: VAF MM 70 OHM 5*

TVPF

H 1M

28*80 7100-1768

A1X21

0757-0280

P:FXD

MET FLM IK OHM 1* 1/8M

284 80

O757-P780

A1R22

0698-3444

RtFXO

MFT FLM 31h OHM It I/8M

784 80

0698-3444

»

3757-028C

R:F*0

MFT FtM IK OHM 1* I/8M

78480

075

7-0780

A1R24

?698-3444

R:FX0

MFT FLM 316 OHM 1* 1/8M

784 80

06t>8- 3444

Al»25

0683-1005

2

PtFXD COMP

10 (JHM 5* 1 MM 01171

CB 1oos

A1R26

0683-1005

RtFXD COMP

10 OHM 5* 1/4M

01121

C 8 1005

AIR?

7

0683-6805

2

RtFXD COMP

68 OHM St 1 MM

01171

CB

680S

A1R28

0683-6805

9:FXO COMP

68 OHM ST 1 MM

01171

CB

6805

AIA29

0683-2715

2

RtFXO COMP

7 70 OH" 5* 1MM 01121

CB 271S

AIR 30

C683-27I5

RtFXD COMP

270 OHM 5* 1MM

0117!

CB 2 7 IS

AlUt

O683-5105

7

RtFXO COMP

51 OHM 5t 1MM

01121

CB 51"S

AIR 32

C6e3-5115

7

RtTXO COMP

510 OHM 5? 1/4M

01121

CB 5115

A1R33

0683-5115

RtFXO COMP

510 OHM 5* 1 MM

01121

CB SI 1S

A1R34

06B3-5105

RtFXO COMP

51 OHM 5T I MM

01171

CB 5105

A1R35

0683

4715

2

RtFXD COMP

470 OHM 5t 1 MM

01171 CB 4715

AIR 3b

0683-1025

PtFXD COMP

1000 OHM St I MM 01171

CB 1025

A1R37

0683-4715

3

RtFXD COMP

470 OHM 5* 1/4M 01171

CB 4715

A1R38

0683-1025

RtFXD COMP

1000 OHM 5* 1 MM

01171

CB 1025

A1R39

0683-2425

1

R FXD

COMP 2400

OHM 5% 1/4W

FACTORY SELECT

01171

CB

2425

AIR 40

C683-5125

RtFXO COMP

5100 OHM 5T 1 MM 01121

CB 512S

Aim

0683-5125

RtFXO COMP

5100 OHM 5* 1/4M

01171

CB SI 25

A1R42

0683-7435

1

PtFXD COMP

74K OHM SX 1 MM C1171

CB 24 35

AIR43

0683-1055

RtFXO COMP 1 MFC,OHM

St 1 MM 01171

CB 105S

AIR44

0683-5125

RtFXO COMP

5100 OHM 5* IMM

01121

CB 5125

A1R45

0683-5175

PtFXD COMP

5100 OHM 5t 1 MM

01121

f B 5125

AIR <.6

0683-3025

3

PtFXD COMP 3000

OHM i»t 1 MM

f>l 171 CB

3025

AIR W

06 8

3-1045

P t FXO

COMP

100K

OHMS

5* 1/4M

01171

CB 1045

A1R4BI PART

OF

1801-0041

RFXD2.7K PART OFE1.E2

28480

1801 0041

A1R60I

E1.E2

AlRbl

0683-102S

RtFXD COMP

1000 OHM 5T I MM 01171

CB 1025

AIR ^2

06P3-3025

RtFXD COMr 3000

OHM 5t 1 MM

01171

CB

3075

A1R63

0683-5125

PtFXD COMP

S100 OHM 5t 1MM

HI 171 CB SI 75

A1R64

0683-1035

3

RtFXD COMP

1 OK OHM 5t 1 MM 11171

CB 10 35

A1R65

0683-5125

RtFXO COMP

S1O0 OHM 5t I MM 01171

CB

si2«,

A1R66

0683-

5125

RtFXD COMP

5100 OHM 5t 1 MM 01121

CO 5175

AIR67

0683-5125

RtJXO COMP

5100 OHM 5* 1MM 01121

CB SI 75

AH66

0683-1035

RtFXD COMP

10K OHM 5t t MM 01121

CB 103S

A

lRb9 0683-1035

RtFXD COMP

1CK OHM St 1/4M 01121

CB 1035

AIR TO

C683-3025

PtFXD COMP iOOO

OHM 5t 1 MM

01171

CH

3075

A1J 1

1820-0441

1

ICiDUAL 5-INPUT NANO GATF

04713 SC8171PK

A1U2

1820-0014

2

ICtOTl QUAD 2--INPT

C AT F

28480 1870-0094

A1U3

ie20-0C61

1

ICsTTL DUAL 4-INPT

POS

NAND GATF

01 2Q5

SN4 344

A1UV

1820-0077

4 IC t T TI

DUAL

0 FF

(LATCH!

0129« SN43S4

A1J5

1870-0773

2

ICtOTL QUAD 2-INPT

AND

GATF

78480

18

70-0773

Al Uf>

1870-0091.

ICtOTl QUAD 7-1NPT GATE

78480

1*70-0094

All)/

1820-0077

ICtTTL DUAL

0 FF

(LATCHI

0129S SN4354

A1U8

1870-0077

ICtTTL DUAL

0 FF

(LATCH)

0129*-

SN43S4

AIJ9

1820-0068

2

ICtTTL TRIPLE 3-INPUT

POS

NAND GATF

12«40 SN74ION

A1U10

1820-1307

1

If

tDIGITAt

DTL HFX

INVERTER

28480 1820-0307

A1U11

1820-0273

ICtOTl QUAD 7-INPT

AND

GATF

28480

1

8->0-o?

7<

A1U12

18

70-03

70 1

ICtTTL QUAD '-1NPI NAND GATE

0129S SN447P

A1JI 3

1820-0174

7

INTEGRATED CIRf.UITtTTL

HFX

INVFRTER

01795

SN8 | 99

A1U14

1870-0054

2

ICtTTL QUAD 2-INPUT NAND GATE

01

?9*> rN414

7

A 1J 1 l>

1870-007

7

ICtTTL DUAL

0 FF

(LATCH)

m

?<>s

•-N4 354

A1J16

1870-0068

ICtTTL TPIPLF 3-INPUT

PUS

NANO GATF

17040

SN 741 ON

A 1J1 7

1870-0174

INTEGRATED CIPCUITtTTL

HEX

INVE

RTF R

01 ?9S

SN8I99

A1JI 8

1870-0054

ICtTTL OUAD 2-INPUT NAND GATE

01295

*>N4

<4?

A 1J19

1P20-0511

1

ICtTTL QUAD 7-INPT G GATE

01 295

SN205

77

A1U20

1870-0378

1

ICtTTl QUAD 2-INPT

NOR

GATE

1 ,>95

*°> N4 4 6 7

A1J21

18

70-OS78

1

ICtOIGITAL DUAL 7-INPT OR/NOR GATE

04713

SC 738 <PK

A1J22

1820-0577

1

ICtOIGITAL

TTL HEX

INVERTFR

o 1 795

SN727

79

A1U2J

1870-0253

7

INTEGRATED CIRCUIT tDIGITAl

ECL

DUAL

04 71 3

MC1035P

A1U 2 <>

1870-0753

IMTEGPAT

FD

CIRCUITtDIG ITAl

ECL

OUAl 04713

MCI

035P

A2

05304-60007

I

BOARD ASSY

t AT

T(NUATOR

78480

05304-60002

A?XA MlSC 05300-70007

1

PIN

CONNECTOR GROUP

PC

Contains

36 pc

ught angle

78480 05300-20007

CONNECTORS Only

14 are

used

A2C1

0160-2750

2

CtFXD

CER 5.1 PF

500VDCM 72987 3OI-OOO-COHO-5191

A2C2

0160-2750

CtFXD

CER 5.1 PF

SOOVOCM 77982

301

-000-CHH0-S1

91

A2C3

CI

40-0208

7

CtFXD MICA

680 PF S*

72136

R0M15F

*81 J3C

A2C%

0140-0708

CtFXD MICA

680 PF St

771 J6

8DM15F681

J3C

A2C5

0160-7199

2

CtFXD MICA

30 PF St

300V0CM '8480 0160-2199

A2C6

01 60-71 99

CtFXD MICA

30 PF 5*

300VDCM

28480

0160-2199

A2C7

0150-0075

CtFXD

CEP

47O0

PF

*100-207 SOOVOCM

77987

8S1-OCO-XSUO-4

72Z

A2C8

01

SC-0C75

CtFXD

CER

4700

Pt

*103-70^ SOOVDCM 77987

851-0C0-X5U0-4

727

St»e introduction

to

this section

for

ordering information

9D-7-5

Model 5304A

Manual Changes

and

Options

Table 90-7-4. Replaceable Parts

Reference

Designation

HP

Part Number

Qty

Description

Mfr
Code

Mfr

Part Number

A2J 1

1250-1163

2

CONNECTOR

sRF BNC

INPUT

28480

1250-1163

A2J2 1250-1163

CONNFCTORsRF

BNC

INPUT

28480

1250-1163

A2RI 0693-9145

2

RsFXD COMP

91OK OHM 5* 1/4*

01121 CH 9145

A2R2 C6P3-9145

R:FX0 COMP

910K 0HH 5* 1/4W

01121 CB 9145

A2R3

068

3-9125

2

RSFXD COUP

9100 OHM 5f 1/4W

01121

CB 9125

A2R4 0683-9125

R:FXD COMP

9100 OHM 5* 1/4W

01121

CB 9125

A2R5

0698-^576

2

R:FX0 COMP llOK

OHM 5* 1/4M

284 "0

0698-35

76

A216

C698-3576

RSFXD COMP

110K OHM 5* 1/4W

28480

0698-

35 76

A247

0683-1055

RSFXD CONP 1 MEGOHM

5* 1/4W

01121 CB 10S5

A2R8

06P3-1055

RSFXD COMP 1 MFGOHM

5* 1/4W

01 121 CB 105*'

A2R9 2100-2905

2

RSVAR CERMET

1 OK OHM 10T LIN

28480

21

00-290*>

A2RI0 2100-2905

RSVAR CERMET

10K OHM 10* tIN

28480 2100-290S

A2S2

3101-1313

SWITCHsSlIOF 0P3T

0.5A 125V

AC/OC

79 72 7

G128S-0034

A2S3

3101-1313

SWITCHSSLIDE DP3T

0.5A 125V

AC/DC

79727

G128S-0004

A2S4

3101 1596

4

SUITCHSSLIDE DPDT

0.5A 125V

AC/DC

28480

3101 1596

A2S5

3101 1596

SWITCHSSUUE DPDT

0.5A 125V

AC/DC

28480

3101 1596

A2S6

3101 1596

SW IT CHS SI IDE

DPDT

0.5A 125V

AC/DC

28480

3101 1596

A2S7

3101 1596

SWITCHSSLIDE DPDT

0.5A 125V

AC/DC

W80 3101 1596

CHASSIS PARTS

3101 1596

,U

1250-0083

2

CONNFCTOPsBNt

02660

31-221-1020

Cl

0160-0182

1

C:FXD

47 pf, 5%,

300V

14655

31-221-1020

J2

1250-0083

CONNECT

OR S BNC

02660

31-221-1020

R43

2100-3078

1

RSVAP COMP I MEGOHM

20*

28480

2100-30

78

IPART

OF S2I

si

3101-1159

1

SMITCHsPUSHBUTTON SPOT

82389

1

OS-1051

S2

3100-2922

1 SM

ITCHSROT

ARV

28480

3100-2922

S3

IP APT OF R4 3)

HI 05

304-60004

1

CABLF ASSY

28480 05304-60004

MISCELLANEOUS PARTS

03

70-1005

2

KNOBSJADF GREY

28480

03

70-1005

0370-1100

1

KNOBS JADE GREY

28480

0370-11*0

0370-2102

1

KNOB

28480

0370-210?

05245-2016

I

COUPLER

28480

05245-2016

05

300-40003

4

SU°POPT sBOARD

23480

05300-4010^

05300-40004

4

GUIDES

SI IDE

28480

05

300-40004

05301-20005

1

STANDsTILT

28480

05301-20005

05300 80004

1

COVER PLASTIC OUST PROTECTION

28480

05300 80004

05

301-40001

2 F001

28480

05301-40001

0

304-00001

1

PANFLSFRONT

28480 05304-00001

1r304-00004

1

PANELsREAR

28480 05304-00004

'40208

8

SCREW SELF

TAP. CAD

PLATE. 6/32*1/2" 28480 0624 0208

See

introduction

to

this section

for

ordering information

9D-7-6

»

»

i

E2( I) — R48
E2(2) — R54

E2(6) — R55
E2(7)—

R5 I

A2

Bottom

E2(8)—R53

A1

E2(3)—R52
E2(4)—R59

E2(5) — R57

El(6) — R50

EU7)—

R56

El(8) — R58

NOTES

1

REFERENCE DESIGNATIONS WITHIN THIS

ASSEMBLY

AWE

ABBREVIATED

ADD

ASSEMBLY NUMBER

TO

ABBREVIATION

EOR

COMPLETE DESCRIPTION

2

UNLESS OTHERWISE INDICATED

RESISTANCE

IN

OHMS.

CAPACITANCE

IN

PICOFARADS

A2

ATTENUATOR BOARD ASSEMBLY ioiJO« sooo?.

REFERENCE DESIGNATIONS

NO

PREFIX

CI 15
CRI-IB
El.?

R4 5
SI.?

01-19
Rl - 70

IAHIE

OF

ACTIVE COMPONENTS

CRI 4
CRVIZ.I6.I7
CRlS.

14
CRI5
01 - 4

05.9.19
010
QII.I2.I7,18
013 16
Ul
U?.6
U3
U4.7.8.I5
U5.ll
U9.I6
1110
UI2
UI3.I7
UI4, IB

U??
U?3. 24

PART NUMBERS

1901

0376

1901

-0040
1902-0031
190? 3149
1855-0081
1853-0036
1854

0246

1854

0094

1854-0071
1820 0441
1820

0094

1820

0069

1820

0077
1820-0273
1820-0068
1820-0307
1820-0370
1820-0174
1820

0054
1820 051 i
l8?0-03?8
1820-0578
1820-0577
1820

0253

•»rp(

I \

WHT-VIQ

I

WHT-OWA

S?'R43

R» AH Vlf W

YEL

[

LCVtL

A I I

iCVtl

•

00E0l2]B

5*3 £

roHHXMi

!J O

z-.mB

P/0

AlPI

JJ It rv

£2181 l-5

' " twi 3TS

3

* '»

'7"

ciin

u

© o

Mil OX

Ai

TiME NTEPVAL BOARD ASbEMBLY <0530« - 6000

•

016

000000

m

P/Q

AIPl

oxr

0 Oh

->33 fir

012

Figure 9D-7-1.

Al

Time Interval Board Assembly

A2

Attenuator Board Assembly

on 7 7

1

SCHEMATIC

DIAGRAMS

SECTION

IX D

5304A TIMER/COUNTER

SUBSECTION VIII

CIRCUIT DIAGRAMS

9D-8-1. GENERAL

9D-8-2. Subsection VIII contains:

a.

Schematic diagram notes

are

contained

in

Section

V III of the

5300A portion

of the

manual.

b.

Instrument interconnection

pin

list

of

signals

listing where they originate

and

where

the go.

c.

Component locators, circuit

and

block

diagrams

of

assemblies.

Model 5304A
Circuit Diagrams

Table 9D-8-1. Instrument Interconnection List

PIN NO.

SIGNAL NAME

DESCRIPTION

1

+5 V

2 -5 V

Input

DC

from 5300A

3 -1 7 V

4

GROUND

5 * Fl

This

is the

signal

to be

accumulated

in the

counter after gating

by the

control circuit.

6 *

"9"

Goes

low

when

the

counter reaches

9%

full scale.

7 *

F2 The

input signal

to the

time base gated

by the

control circuit.

8

INHIBIT High during

the

measurement cycle,

low

during

the

display cycle.

9 *

OPEN

Low

signal forces

the

main gate flip-flop

to the

open position.

10 *

CLOSE

Ix)w

signal forces

the

main gate flip-flop

to the

close position

11

LOG

logarithmic output pulse train from time base triggers main gate
flip-flop

on

rising edge.

12

MGFF Main gate flip-flop signal

is low

when gate

is

open.

13

EXPONENT

Inverted

log

pulses while main gate

is

open indicates number

of

auto ranging steps.

14

NO

CONNECTION

15

RESET

High signal resets

all

registers.

16

CLOCK

10 MHz

reference signal from crystal oscillator.

17 *

MAX

TIME

Low

signal enables closing

of the

gate

on

next

log

pulse.

Rising edge initiates display cycle.

18

TIME BASE OUTPUT

Output from

the

time base decade position selected

by the

time

base select code

on

pins

22, 23, and 24.

r

19

PRINT

Ix)W

signal provides print command

to

rear panel connector.

^20

TRANSFER

I>ow signal transfers data

to

display. High signal stores data.

21 * 1 MHz

TIME BASE INPUT

Input direct from plug-on bypasses control circuit.
22 *
23 *

24 *

TIME BASE SELECT

A

TIME BASE SELECT

B

TIME BASE SELECT

C

Time base select code

A. B, and C

selects

the

time base

division factor

of the

signal

at the

time base output

at pin 18.

r

*\50

+22 V

Full wave rectified voltage from

the

power transformer secondary.

Provides power

to

charge

the

battery pack.

If no

battery pack

is

used,

pin 2ft is

connected

via the

plug-on

to pin 50.

26 + 17 V
27 *

H7

28 *

"M

Pins

27

through

31

provide

the

drive

to the

annunciator lights.

29 *

s

on the

front panel.

A low

signal lights

the

corresponding indicator.

30 *

K

31 *

71

32

MANUAL RESET

Ixjw signal from front panel pushbutton switch

on

rear panel

input clears

the

system

to

zero.

33 * DPT

lx)w

signal activates decimal point

1.

34 *

DP2

Ix)w

signal activates decimal point

2.

* -

Source

9D-8-2

Model 5304A

Circuit Diagrams

Table 9D-8-1. Instrument Interconnection List

PIN NO.

SIGNAL NAME

DESCRIPTION

35 NO

CONNECTION
p-36
^37

DIGIT ADDRESS

X

p-36
^37

DIGIT SELECT

X

Digit address code

X, Y, Z

from

the

display scanner indicates

a

digit being displayed.

[•*38

DIGIT ADDRESS

Y

^39
p-40
*•41

DIGIT SELECT

Y

DIGIT ADDRESS

Z

DIGIT SELECT

Z

DIGIT select code

X, Y, Z is the

corresponding code which selectes

the

digit

at the

output

of the

counter.

If the

main frame

counter

is

displayed directly

the

corresponding lines

of the

digit

address code

and the

digit select code

are

connected together.

42 NO

CONNECTION

43

44

NO

CONNECTION

NO

CONNECTION

44 NO

CONNECTION

45

NO

CONNECTION

46 *

DP3 Ix)W

signal activates decimal point

3.

47 *

DF4

Low

signal activates decimal point

4

48 * I)P5

Low

signal activates decimal point

5.

49

NO

CONNECTION
j^50

DC IN DC

power

to

power supply from battery pack

or

from

22

volt input

power from

pin 25.

L25

*=Source

9D-8-U

Model 5304A
Circuit Diagram

Part

of

Figure

91) 8-1.

5304A Block Diagram

PER

AVERAGE FREO AUTO
EXPONEN.CONTROL

EXP

TRANS

A

INPUT

T.I. A TO

AUTO

DPI.2.

3.4.5

TB

OUTPUT

INHIBIT

IMH2TB INPUT

CHA

CH

CHECK

GATE CONTROL

•

CLOSE

OPEN

DELAY

OUT

J3BNC

INPUT

MAX

TIME

MGFF

CHA

SLOPE

SWITCH

CHB

SLOPE

SWITCH

011

LEVEL

SHIFTER

U12C

U24A

SCHMITT

CHA

AMP

CHB

AMP

U23A

SCHMITT

012

LEVEL

SHIFTER

USA/B

EXPONENT

COUNTER

U7A/B

EXPONENT

STORAGE

U17D. U16A.

U17E

013.14.15.16.17
DELAY

HOLD

OFF

CONTROL

U9C

OPEN & DELA,

OUT

SWITCH

U13B-F

DELAY

INVERTERS

U12B-U16B

F1

GATED

U14D-U22D

CLOSE GATE

CONTROL

U4B

OPEN CLOSE

FF

CONTROL

U16C

TB

GATED

OUT

U18

CHA'B

SWITCH

OPEN/CLOSE

SWITCH

U15A

GATE CLOSE

AND

DELAY

CONTROL

U1SB
GATE OPEN
AND

DELAY

CONTROL

S2

FUNCTION

SWITCH

DECODERS

ANNUNC..

TB

SELECT

TRIGGER

DELAY

CONTROL

FF

PA/TB

9D-8-4

EfflEI

H*

•^yywA.

El (3) — R60 E2( I) — R48

E2(6)—R55

EI (5) — R49 E2 (2) — R54

E2(7)-R5I

EU6) — R50 E2(3) — R52 E2(8)

—R53

El (7) — R56

E2(4)—R59

El (8) — R58 E2(5) — R57

A1

RIO R9

S6

S7
R7 R8
S4 R4 S5

R6
S2 S3

Rl

R2

Jl J2

SI

A2 Top

R9

1

,A_

RIO

^ |! £7

* Re k

m ? - \\

A2

Bottom

NOTES

1

REFERENCE DESIGNATIONS WITHIN THIS

ASSEMBLY

ARE

ABBREVIATED

ADD

ASSEMBt* NUMBER

TO

ABBREVIATION

FOR

COMPUTE DESCRIPTION

2

UNLESS OTHERWISE INDICATED

RESISTANCE

IN

OHMS.

CAPACITANCE

IN

PICOFARADS

A2

ATTENUATOR BOARD ASSEMBLY 3»JO« -soooi)

Rlf

FRENCt DESIGNATIONS

CI - is
CRI-18
El. 2

U22
U23, 24

Hi 10
SI-7

TAHl

f OF

ACTryf COMPONENTS

CART NUMBERS

1901

-0376

1901

0040
190? 0031
1902

-3<49

1855

OOBl
1853

0036
IBM-0246
1854

0094
1854 0071
:B?0 0441
1820

0094
1820

00fc9

>820

00 n
1820-0273
1820

0068
I820-0307
1820

0370
1820 0174
.•820 0054
i820

05"
1820-0328

I820 057B
1820-0577
1820-0253

CRI5
01 4
05,9,19
010
Oil. 12.1 7, 18
013 If.

Ul

\*MT

t",RA

(° r\ v- 3}L 7,

HT ORN Y . y \/

|

HVIL

A I I

LlVtL

> I

• 0 0 3 0 0
Si 1EI3

-Hi

P/0

AlPl

•• : (^3

© o

C»»i

: n

© o

iSEMBLY 35S04-6000?>

Ai

TiME INTERVAL BOARD ASSEMBLY iOSJ04-60(X>o

f >0

C55T

|

ItVtL

i | |

LtVtL

»|

• E E • 13 0
& 5*3

I—&»'

«

I LA y,

OKJ'T

4ium

S.CH* SCLCCTlO*

tluix

[OPf

KC.05Ct|

<*"• tan

P/O

AlPt

j

ui»o

^ ?4 *B

JCUCt

"C*

*4« 0*

>4*

2

'* EM) 3>5

• " [Ml 5i

* '• run H

77^^--

r—+>-

r"

1 L> 40 ?*"

© o

A ?? re

sfLtcT

v

l«4>

555

rr>M °**

Figure 9D-8-1.

Al

Time Interval Board Assembly

A2

Attenuator Board Assembly

9D-8-5

I

MANUAL

CHANCES

MANUAL CHANGES

CHANGE DATE: December

15, 1981

This change supersedes

all

earlie*

dated changes.

***

Make

all

corrections listed
under ERRATA before making
other changes.

***

Check following table

for

your

instrument's serial prefix

or

series number

and

make listed

change(s)

to

manual.

MANUAL DESCRIPTION

«««*««««««**«**««»«

*

INSTRUMENT: 5304A

*

Timer-Counter Module

*

Operating

and

Service Manual

*
*

*

SERIAL PREFIX:

1212A

ft

*

DATE PRINTED:

AUG 1973

* HP

PART

NO:

05304-90006

*

MICROFICHE

NO:

05304-90009

ftftftftftftftftft**********

0

INDICATES

NEW OR

REVISED ITEM

>

INDICATES ACTION

TO BE

TAKEN

NPC = NO

PREFIX CHANGE

SERIAL PREFIX

OR

SERIES NUMBER

MANUAL

CHANGE(S)

SERIAL PREFIX

OR

SERIES NUMBER

MANUAL

CHANGE(S)

1704A

1
1716A 1,2
1804A

1,2,3

1940A 1,2,3,4

2024A 1,2,3.4,5

2148A

1

thru

6

#(NPC)

1

thru

7

Information

for any

optional circuit boards described

in

this manual agrees

with

the

series numbers

on the

circuit board(s)

for the

option, which

may

not be the

same

as the

Serial Prefix Number

on the

rear

of the

instrument.

(C5304AS)7061-7096/7485/9455/7080E/6=12160/7=13167

ma|

HEWLETT

ll'iZJ PACKARD

MANUAL CHANGES MODEL 5304A (05304-90006) Page

1

ERRATA

Page 9D-2-1, 9D-3-2, 9D-3-6,

and

9D-3-10:

>Add

the

following:

WARNING

TO

AVOID POSSIBILITY

OF

BODILY INJURY AND/OR EQUIPMENT

DAMAGE,

DO NOT

CONNECT

"HOT"

SIDE

OF

POWER LINE

TO
INSTRUMENT CHASSIS GROUND. HEWLETT-PACKARD RECOMMENDS
USING

AN

ISOLATION TRANSFORMER WHEN MEASURING

AC

LINE

FREQUENCIES. ADDITIONALLY,

DO NOT

EXCEED

THE

INPUT VOLTAGE

LIMITATIONS SPECIFIED

IN

TABLE 9D-1-1.

Page 9D-3-8, Figure 9D-3-7. Paragraph

6:

>Change

to

read

as

follows:

Adjust ATTEN switches

and

LEVEL controls until a stable display

is

obtained.

Page 9D-5-18, Table 9D-5-1, In-Cabinet Performance Checks:

>Change step

e.4. to

"COM-SEP-CHK

to SEP."

>Change step

e.5. to

"i-EVEL (both channels)

to

position giving most stable

display."

Page 9D-8-5, Figure 9D-8-1,

A1

(05304-60001) Schematic Diagram:

>Add "NOTE

3"

just above line showing connection between A1U12D(13)

and

junction

of

A1U12A(2)

and

A1U12C(9).

>Add

the

following under NOTES:

3. IN "REV D" CKT

BOARDS, A1U12D(13)

IS

CONNECTED

TO

A1U12C(8);

NOT TO

THE

JUNCTION

OF

A1U12A(2)

AND

A1U12C(9).

Page 9D-6-4, Table 9D-6-1, Replaceable Parts:

>Add

A2S1;

3101-1598; SWITCH-SLIDE DP3T

0.5A 125V

AC/DC; 28480; 3101-1598.

//Page 9D-6-4, Table 9D-6-1, Miscellaneous Replaceable Parts:

>Change CASE part number from 05300-20010

to

05300-20006

in HP and Mfr

Part

Number columns.

MANUAL CHANGES MODEL 5304A (05304-90006) Page

2

CHANGE 1 (1704A)
Page 9D-6-2, Table 9D-6-1,

A1

(05304-60001) Replaceable Parts:

>Add "SERIES

1704" to

Description

for A1

circuit board.

>Change

A1Q1 and A1Q2

from 05304-80001

to

1855-0213; DUAL JFET N-CHANNEL

2N5912; 28480; 1855-0213.

>Change

A1R19 and

A1R20 from 2100-1768 (20-ohm)

to

2100-2010; RESISTOR-VAR

COMP 10-ohm

20%;

32997; 3329H-1-10R.

. .•

Page 9D-8-5,

A1

(05304-60001) Schematic Diagram:

>Add "SERIES

1704" at top of A1

(05304-60001) schematic.

>Add "NOTE

4"

between A1Q1/A1Q3

and

A1Q2/A1Q4.

>Add

the

following under NOTES:

"4.

A1Q1/A1Q3

AND

A1Q2/A1Q4

ARE

DUAL JFET N-CHAN UNITS WITH.CENTER LEAD

TO

CASE CJJT

OFF."

>Change

Q1-4 in

TABLE

OF

ACTIVE COMPONENTS

to

Q1/Q3, Q2/Q4;

and HP

PART

NUMBER

to

1855-0213.

>Change

the

values

of A1R19 and

A1R20 from

20 to

10-ohm..

CHANGE 2 (1716A)

Page 9D-6-2, Table 9D-6-1,

A1

(05304-60001) Replaceable Parts:

>Change

A1

from series

1704 to 1716.

>Change

A1U15

from 1820-0077 (3N7474N)

to

1820-1112;

IC TTL LS

DUAL-D FLIP-

FLOP; 01295; SN74LS74N.

Page 9D-8-5. Figure 9D-8-1,

A1

(05304-60001) Schematic Diagram:

>Change series number,

at top of

diagram, from

1704 to 1716.

>Change

A1U15 in

TABLE

OF

ACTIVE COMPONENTS

to

1820-1112.

>Change

A1

schematic

by

disconnecting A1U15B(13) from

the

junction

of

U13E(10)

and

U8(1,10).

>Add a connection between A1U15B pins

12 and 13.

CHANGE 3 (1804A)

Page 9D-6-2, Table 9D-6-1,

A1

(05304-60001) Replaceable Parts:

>Change

A1

series number from

1716 to 1804.

>Change

A1R19 and

A1R20 from 2100-2010 (10-ohm)

to

2100-1985; RESISTOR-TRMR

20-ohm

20% C

TOP-ADJ 1-TURN; 32997; 33294-1-20R.

Page 9D-8-5* Figure 9D-8-1,

A1

(05304-60001) Schematic Diagram:

>Change

A1

series number from

1716 to 1804.

>Change

the

values

of A1R19 and

A1R20 from

10 to

20-ohm.

CHANGE 4 (Serial Prefix 1940A)
Page 9D-6-3, Table 9D-6-1,

A2

(05304-60003) Replaceable Parts:

>Add (SERIES

1940) to A2

Description.

>Change

A2S1, S2 and S3

from 3101-1598

to

3101-2383

in HP and Mfr

Part Number

columns.

>Change A2S4 thru

S7

from 3101-1596

to

3101-2334

in HP and Mfr

Part Number

columns.

Page 9D-8-5, Figure 9D-8-1,

A2

Schematic Diagram:

>Add (SERIES

1940) at top of A2

schematic diagram.

MANUAL CHANGES MODEL 5304A (05304-90006) Page

3

CHANGE 5 (Serial Prefix

No.

2024A)

Page 9D-6-3

A2

(05304-60003), Replaceable Parts:

>Change

A2

(05304-60003) Series Number

to

2024A.

Page 9D-6-4

A2

(05304-60003)* Replaceable Parts:

>Change

A2S1, S2 and S3

from 3101-2383

to

3101-1313;SWITCH-SLIDE DPDT

0.5A

125V

28480; 3101-1313.

CHANGE

6

Pages 90-6-3

and

9D-6-4, Table 9D-6-1.

A2

(05304-60003) Replaceable Parts:

>Change

A2

SERIES number

to 2148.

>Change

A2S1, S2 and S3 to

3101-2383; SWITCH-SLIDE DP3T MINTR

,5A

125VAC

PC

Page 9D-8-5# Figure 90-8-1.

A2

Attenuator Board Assembly Schematic Diagram:

>Change

A2

SERIES number

to 2148, at top of

schematic.

//CHANGE

7

Page 9D-6-3, Table 9D-6-1.

A1

(05304-60001) Replaceable Parts:

>Change

A1U21 to

05300-80013;

IC

GATE

ECL

0R-N0R, DUAL 2-INP

Page 9D-8-5, Figure 9D-8-1.

A1

Time Interval Board Assembly Schematic Diagram:

>Change

A1U21

part number

to

05300-80013

in

TABLE

OF

ACTIVE COMPONENTS.

•* <1

MANUAL CHANGES

MANUAL IDENTIFICATION

~

Model Number: 5304A

Date Printed: August

1973

Part Number: 05304-90006

This supplement contains important information

for

correcting manual errors

and for

adapting

the

manual

to

instruments containing improvements made after

the

printing

of the

manual.

To use

this supplement:

Make

all

ERRATA corrections.

Make

all

appropriate serial number related changes indicated

in the

tables below.

—

Serial I'rcfix

or

Number

132311-01151
1632U
1714U

Make Manual Changes

—

1
1-2
1-3

Serial Prefix

or

Number

Make Manual Changes

# NEW

ITEM

ERRATA

Pages 9D-2-1, 9D-3-2, 9D-3-6

and

9D-3-10:

Add the

following:

WARNING

TO

AVOID POSSIBILITY

OF

BODILY INJURY AND/OR EQUIPMENT DAMAGE>

DO

NOT

CONNECT

"HOT"

SIDE

OF

POWER LINE

TO

INSTRUMENT CHASSIS GROUND.

HEWLETT-PACKARD RECOMMENDS USING

AN

ISOLATION TRANSFORMER WHEN

MEASURING

AC

LINE FREQUENCIES. ADDITIONALLY,

DO NOT

EXCEED

THE

INPUT VOLTAGE LIMITATIONS

AS

SPECIFIED

IN

TABLE 9D-1-1.

Page 9D-3-8, Figure 9D-3-7, Paragraph

6:

Change

to

read

as

follows:

"Adjust ATTEN switches

and

LEVEL controls until a stable display

is

obtained".

NOTE

Manual change supplements

are

revised

as

often

as

necessary

to

keep manuals

as

current

?nd

accurate

as

possible. Hewlett-Packard recommends that

you

periodically request

the

latest edition

of the

supplement. Free

copies

are

available from

all IIP

offices. When requesting copies quote

the

manual identification infoimation

from your supplement

or the

model number

and

print date from

the

title page

of the

manual.

15-9-77

Page

1 of 3 ]

HEWLETT

ihp,

PACKARD

Pnntfid

«n U K

Model

No.

5304A

05304-90006

ERRATA (Cont'd):

Page 9D-5-18, Table 9D-5-1,

In

Cabinet Performance Checks:

Change Step

e.4. to

"COM'SEP-CHK

to SEP".

Change Step

e.5. to

"LEVEL (both channels)

to

position giving most

stable display".

Page 9D-6-2/3, Table 9D-6-1:

*

Change A1R19/20

to

2100-1985.

Add MP 1

Part Number 1460-1312 Spring Clip.

Add MP1

Part Number 0905-0479 Gasket.

CHANGE

1

Page 9D-6-2, Table 9D-6-1:

Add A1

Part Number 05304-20001 Board Blank RevD.

Page 9D-8-5, Figure 9D-8-1,

A1

(05304-60001) Schematic Diagram:

Add

"NOTE

3"

just above line showing connection between A1U12D

(13) and

junction

of

A1U12A

(2) and

A1U12C

(9).

Add the

following under NOTES:

3. IN "REV D" CKT

BOARDS, A1U12D

(13) IS

CONNECTED

TO A1U12 (8);

NOT TO

JUNCTION

OF

A1U12A

(2) AND

A1U12C

(9).

Page 9D-6-4, Table 9D-6-1:

Under Miscellaneous Parts:

Change 05300-20010

to

05300-20025.

CHANGE

2

Page 9D-6-2, Table 9D-6-1:

Change A1Q13/A14

to

Part Number 1854-0094 XSTR

NPN SI.

Page 9D-7-7, Figure 9D-7-1:

In

Table

of

active components:

Change A1Q13/14

to

1854-0094.

Page 9D-8-5, Figure 9D-8-1:

In

Table

of

active components:

Change A1Q13/14

to

1854-0094.

CHANGE

3

Page 9D-6-2, Table 9D-6-1,

A1

(05304-60001) Replaceable Parts:

Change

A1Q1 and A1Q2

from 05304-80001

to

1855-0213; DUAL JFET N-CHANNEL

2N592.

Page

Model

No.

5304A

05304-90006

CHANGE 3 (Cont'd):

Page 9D-6-3, Table 9D-6-1:

Change

A1U15 to

1820-1112

INT CCT

SN74LS74.

Page 9D-8-5,

A1

(05304-60001) Schematic Diagram:

Add

"NOTE

4"

between A1Q1/A1Q3

and

A1Q2/A1Q4.

Add the

following under NOTES:

4.

"A1Q1/A1Q3

and

A1Q2/A1Q4

ARE

DUAL JFET N-CHAN UNITS WITH

CENTER LEAD

TO

CASE

CUT OFF".

Change

Ql-4 in

TABLE

OF

ACTIVE COMPONENTS

to

Ql/q3, Q2/Q4

and HP

PART NUMBER

to

1855-0213.

Page 9D-8-5:

In

table

of

active components:

Change

U15 to

1820-1112.

Alter Schematic

to

show change

of

wiring:

a)

Connect Pins

12 and 13 of U15

together.

b)

Remove track from

U13 Pin 10 to U15 Pin 13.

Page

3.