pg508.pdf

TM 11-6625-2980-14

TECHNICAL MANUAL

OPERATOR'S, ORGANIZATIONAL,

DIRECT SUPPORT AND GENERAL

SUPPORT MAINTENANCE MANUAL

FOR

PULSE GENERATOR AN/USM-359A

(NSN 6625-01-077-4620)

(TEKTRONIX MODEL PG 508 WITH TM 503)

HEADQUARTERS, DEPARTMENT OF THE ARMY

27 MARCH 1981

TM 11-6625-2980-14

SAFETY SUMMARY

This manual contains safety information which the user must follow to ensure safe operation of this instrument.

WARNING information is intended to protect the operator; CAUTION information is intended to protect the instrument.

The following general safety precautions must be observed during all phases of operation, service, and repair of this

instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety

standards of design, manufacture, and intended use of the instrument.

Warning statements precede potentially dangerous procedures throughout this manual. The instructions contained in

the warnings must be followed. The following warning statements are found in this manual.

WARNING

Use a proper power source. This instrument is designed to operate from a power source with its neutral

at or near ground potential with a separate safety-earth conductor. It is not intended for operation from

two phases of a multi-phase system, or across the legs of a single-phase, three-wire system.

WARNING

Avoid live circuits. Dangerous voltages exist at several points throughout this instrument. When the

instrument is operated with the cover removed, do not touch exposed connections or components. Some

transistors have voltages present on their cases. Disconnect power before cleaning the instrument or

replacing parts.

WARNING

Avoid contact with chemicals. Handle silicone grease with care. Avoid getting silicon-in grease in

eyes. Wash hands thoroughly after use.

WARNING

Adequate ventilation should be provided while using TRICHLOROTRIFLUOROETHANE. Prolonged

breathing of vapor should be avoided. The solvent should not be used near heat or open flames; the

products of decomposition are toxic and irritating. Since TRICHLOROTRIFLUOROETHANE dissolves

natural oils, prolonged contact wit h skin should be avoided. When necessary,-use gloves which the

solvent cannot penetrate. If the solvent is taken internally, consult a-physician immediately.

WARNING

Compressed air is dangerous and can cause serious bodily harm if protective means or methods are not

observed to prevent a chip or particle (of whatever size) from being blown into the eyes or unbroken skin

of the operator or other personnel. Compressed air shall not be used for cleaning purposes except where

reduced to less than 30 p.s.i.f. and then only with effective chip guarding and personnel protective

equipment. Do not use compressed air to dry parts when Trichlorotrifloroethane has been used.

CAUTION

Avoid power surge damage. Do not remove or install plug-in unit while power is on as damage may

occur to circuitry.

TM 11-6625-2980-14

This manual contains copyright material reproduced b)y permission of Tektronix. Inc.

TECHNICAL MANUAL

HEADQUARTERS

DEPARTMENT OF THE ARMY

No. 11-6625-2980-14

WASHINGTON, DC, 27 March 1981

OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, AND

GENERAL SUPPORT MAINTENANCE MANUAL

FOR

GENERATOR, PULSE AN/USM-359A

(TEKTRONIX MODEL PG 508 WITH TM 503)

(NSN 6625-01-077-4620)

REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this manual. If you find any mistakes or if you know of a way to

improve the procedures, please let us know. Mail your letter, DA Form 2028 (Recommended

Changes to Publications and Blank Forms), or DA Form 2028-2 located in back of this

manual direct to: Commander, US Army Communications and Electronics Materiel

Readiness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, New Jersey 07703.

This manual is an authentication of the manufacturer's commercial literature which, through usage, has been found to

cover the data required to operate and maintain this equipment. Since the manual was not prepared in accordance with

military specifications, the format has not been structured to consider levels of maintenance.

TM 11-6625-2980-14

TABLE OF CONTENTS

Page

Section 0

INTRODUCTION

0-1

APPENDIX A TM 503 MAINFRAME

Section I.

INSTALLATION PROCEDURE A-1

SECTION 1 OPERATING INSTRUCTIONS

Instrument Description

1-1

Section II. TM 503 OPERATING

I NSTRUCTIONS

A-3

Installation and Removal

1-1

Introduction

A-3

BASIC OPERATION

1-2

Powering Up

A-3

Period and Duration Selection

1-2

Building a System

A-5

Duty Factors

1-2

Specifications

A-6

Delayed and Paired Pulse Selection 1-2

Transition Time Selection

1-3

Section III. TM 503 SYSTEM MAINTENANCE

A-7

Transition Time Selection

1-3

General

A-7

External Triggering and Gating

1-3

Troubleshooting Aids

A-8

Trigger Output

1-4

Troubleshooting Techniques

A-8

Manual Trigger

1-4

Parts Replacement

A-10

Control Error Light

1-4

Diagrams and Circuit Board

Control Error Light

1-4

Illustrations

A-14

OPERATING CONSIDERATIONS 1-4

Power Module Interface Pin

Output Termination’s and

Assignments

A-15

Connections

1-4

Detailed Block Diagram

A-16

Connections

1-4

Parts Location Grid

A- 17

Rise Time Measurements in Linear

Parts Location Grid

A-17

Systems

1-5

Replaceable Mechanical Parts

A-19

Counted Burst Using the DD 501

APPENDIX BR EFERENCES

External Voltage Control 1-5

Digital Delay Unit 1-5

Definitions of Pulse Characteristics 1-8

APPENDIX C COMPONENTS OF END ITEM AND

SPECIFICATIONS

1-9

BASIC ISSUE ITEMS LIST

Environmental Requirements

1-11

Section I.

INTRODUCTION

C-1

Using the Rear Interface

Scope

C-1

Connectors

1-12

General

C-1

Explanation of Columns

C-1

SECTION 2 THEORY OF OPERATION

Introduction

2-1

Section II. COMPONENTS OF END ITEM

C-2

Input Circuitry

2-1

Section III. BASIC ISSUE ITEMS

C-3

~ TRIG'D/GATED Light Circuitry

2-1

Triggered Mode

2-1

APPENDIX DADDITIONAL AUTHORIZATION

Period Generator

2-2

LIST (Not Applicable)

Delay Generator

2-2

Duration Generator

2-2

APPENDIX E MAINTENANCE ALLOCATION

Duration and Delay Control Error

Section I.

INTRODUCTION

E-1

Light Circuitry

2-3

General

E-1

Variable Transition Time Circuitry 2-3

Maintenance Function

E-1

Transition Time Control Error

Column Entries

E-2

Light Circuitry

2-3

Tool and Test Equipment

Level Control Multiplier

2-5

Requirement

E-2

Output Amplifier

2-6

Power Supply

2-6

Remarks

E-2

Section II. MAINTENANCE ALLOCATION

SECTION 3 SERVICE INFORMATION

CHART OR PULSE

Symbols and Reference Designator s3-1

GENERATOR AN/USM-359A

E-3

General Maintenance and

Section III. TOOL AND TEST EQUIPMENT

Adjustments

3-2

REQUIREMENTS FOR PULSE

Maintenance

3-2

GENERATOR AN/USM-359A

E-5

Circuit Board Removal

3-2

Circuit Board Removal

3-2

APPENDIX FE XPENDABLE SUPPLIES AND

Test Equipment

3-2

MATERIALS LIST

General

3-2

Section I.

INTRODUCTION

F-1

SECTION 4 CONTROLS AND CONNECTORS

Scope

F-1

AND SCHEMATIC DIAGRAMS

4-1

Explanation of Columns

F-1

SECTION 5 REPLACEABLE MECHANICAL

Section II. EXPENDABLE SUPPLIES AND

PARTS LIST

5-1

MATERIALS

F-2

iii

TM 11-6625-2980-14

LIST OF ILLUSTRATIONS

F ig.

Page

No.

1-0

Pulse Generator AN/USM-359A.

FO-1 Controls and connectors.

4-1

1-1 PG 508 installation and removal.

1-1

FO-2 Block diagram.

4-3

1-2 Locations of period, delay and duration

FO-3 Input circuit schematic diagram.

4-5

custom timing capacitors and TRIG/GATE

FO-4 Period generator schematic diagram.

4-7

input impedance switch.

1-2

FO-5 Delay generator schematic diagram.

4-9

1-3 Location for transition custom timing

FO-6 Duration generator and control error circuit

capacitor.

1-3

schematic diagram.

4-11

1-4 Equivalent circuit of external input for output

FO-7 Transition time generator schematic diagram.

4-13

voltage control.

1-5

FO-8 Level control multiplier schematic diagram .4-15

1-5 Location of trigger jumpers in DD 501 for

FO-9 Output amplifier schematic diagram.

4-17

selecting trigger or delay interval output

1-6

FO-10 Tracking voltage supply schematic diagram.

4-19

1-6 PG 508-DD 502 interconnections for counted

FO-11 PG 508 power supply schematic diagram.

4-21

burst operation.1-6

FO-12 TM 503 power supply schematic diagram.

4-23

1-7 Typical propagation delays using PG 508 with

5-1

Al board component locations.

5-2

DD 501 in counted burst mode at 50 MHz

FO-13 A2 board component locations.

5-3

repetition rate.

1-7

FO-14 A3 board component locations.

5-5

1-8 Pulse characteristics.

1-8

FO-15 A4 board component locations.

5-7

1-9 Locations for user installed rear interface

FO-16 PG 508 exploded view.

5-9

connections.

1-12

2-1 Simplified schematic for

control error indicator

logic with control settings

causing illumination.

2-4

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