Tektronix TR 502 User manual

INSTRUCTION



Part

070-1735-00

MANUAL



Product

Group

502

TRACKING

GENERATOR

~ron~~

coMnnirreo

ExcFi_~Ervce

MANUAL

First

Printing

NOV

1975

Revised

AUG

1984

502

Part

.070-1735-00

Product

Group

TRACKING

GENERATOR

Please

Check

for

CHANGE

lNFORMATlON

the

Rear

This

Manual

'Tronix®

1975

Tektronix,

Inc

All

rights

reserved

Contents

this

publication

may

not

reproduced

any

form

without

the

written

permission

Tektronix,

Products

Tektronix,

Inc

and

its

subsidiaries

are

covered

and

foreign

patents

and/or

pending

patents

TEKTRONIX,

TEK,

SCOPE-MOBILE,

and



are

registered

trademarks

Tektronix,

Inc

TELEQUIP-

MENT

registered

trademark

Tektronix

Limited

Printed

Specification

and

price

change

privileges

are

reserved

SECTION

CIRCUIT

DESCRIPTION

TABLE

CONTENTS

SECTION

ELECTRICAL

PARTS

LIST

Block

Diagram

Description



5-~



SECTION

DIAGRAMSandCIRCUIT

Detailed

Circuit

Description



5-1

and

Microwave

Circuits



5-1



BOARD

ILLUSTRATIONS

Bias

Circuitry

and

Leveling

Loop



5-2

Phase

Lock

Loop



5-3



SECTION

MECHANICAL

PARTS

LIST

Operational

Logic



5-4

Power

Supply

Regulators



5-4



CHANGE

INFORMATION

502

SECTION

GENERAL

INFORMATION



Page



SECTION

MAINTENANCE



Page

AND

SPECIFICATIONS



INSTRUCTIONS

Introduction



1-1



Preventive

Maintenance



6-1

Description



1-1



Cleaning



6-1

ELECTRICALCHARACTERISTICS

1-2



Lubrication



6-1

ENVIRONMENTAL



Visual

Inspection



6-1

CHARACTERISTICS



1-2



Transistor

and

Checks



6-1

ACCESSORIES



1-2



Performance

Checks

and

INSTALLATION



1-2



Recalibration

Schedule



6-1

REPACKAGINGFOR

SHIPMENT



1-3



Troubleshooting



6-2

SECTION

OPERATING

INSTRUCTIONS



Troubleshooting

Aids



6-2

Diagrams



6-2

Introduction



2-1



Circuit

Board

Illustrations



6-2

About

the

Tracking

Generator



2-1



Wiring

Color

Code



6-2

Function

the Front Panel



Connectors



6-2

Controls

and

Connectors



2-1



Capacitor

Marking



6-2

Operational

Check



2-1



Diode

Code



6-2

SECTION

PERFORMANCE

CHECK



Transistor

and

Integrated

Circuit

(IC)

Electrode

Introduction



3-1



Configuration



6-2

Preliminary

Preparation



3-1



Finding

Faulty

Semiconductors



6-2

Check

Frequency

Range



3-1



Diode

Checks



6-3

Check

OUT

Amplitude

Range



3-1



Checks



6-4

Check

Flatness



3-1



General

Troubleshooting

Performance

Checks

Which



Techniques



6-4

Require

Test

Equipment



3-1



Corrective

Maintenance



6-5

Equipment

Required



3-1



Obtaining

Replacement

Parts



6-5

Check

Amplitude

Range



3-1



Parts

Repair

and

Exchange

Check

Output

Flatness



3-1



Program



6-5

Check

Auxiliary

Output

Power



3-2



Soldering

Technique



6-5

Check

Residual



3-2



Transistor

and

Replacement



6-5

Check

for

Spurious

Signals



3-2



Replacing

Square

Pins

for

the

Multipin

Connectors



6-6

SECTION

CALIBRATION

PROCEDURE



Interconnecting

Cable

and

Complete

Partial

Calibration



4-1



Replacement



6-6

Adjustment

and

Test

Point



Replacing

Assemblies



6-6

Locations



4-1



Replacing

Microwave

History

Information



4-~



Assemblies



6-6

Equipment

Required



q-1



Replacing

the 2

GHz

Four

Cavity

Filter

Mixer

Preliminary

Preparation



4-1



Assemblies



6-7

MHz

Oscillator

Mode

Adjust

4-2

Adjusting

the

Normalizing

Attenuator



4-3



SECTION

OPTIONS

and

MODIFICATIONS

Output

Level

Calibration



4-3

Sweep

Trigger

Level

Adjustment

4-3

Fig

1-1

502

Tracking

Generator

Introduction



Section

7-Options

and

Modifications

Provides data

The

abbreviations,

graphic

symbols,

and

logic

sym-



production

options

available

bology

used

the

text

and

diagrams

this

manual

are

accord

and

based

ANSI

.1-1972,

ANSI

Y32

.2-1970,

and

ANSI

Y32

.14-1973

(American

National

Standard



Section

8-Electrical

Parts

List

Provides

information

Institute,

345

East

Street

;

New

York,

10017)



necessary

order replaceable

parts

and

assemblies

the

electrical

functions

the

instrument

Change

information

has

been

integrated

into

the

manual

goldenrod

insert

pages

the

back

the

manual

and

page

revision

Original

pages

are

identified

the

symbol

and

revised

pages

are

identified

revision

date

the

lower

inside

corner

the

page

the

serial

number

your

instrument

lower

than the

one

the

title

page,

the

manual

contains

revisions

that

may

not

apply

your

instrument

History

backlog

information

all

previously applicable

produced

products

with

the

updated

data

integrated

when

the

page

diagram

revised

The

fol

lowing describes

the

sections

and

informa-

tion

provided

this

manual

Section

1-General

Information

and

Specifications

Contains

instrument

description,

electrical

specifications,

environmental

characteristics,

accessories,

installation,

and

repackaging

for

shipment

instructions

Section

2-Operating

Instructions

Information

relative

operating

and

checking

the

instrument operation

Section

3-Performance

Check

Procedure

check

the

operational

performance

and

electrical

specifications

the instrument

Two-part

section

provides

incoming

inspection

type

check

and

detailed

electrical

perfor-

mance

verification

Section 4-Calibration

Procedure

Describes

test



description

equipment

setup

and

adjustment

procedures

required



The

502

Tracking

Generator

operates

with

the

7L13

calibrate

the

instrument



7L12

Spectrum

Analyzer

provide

calibrated

signal

for

swept

frequency

applications

from

100

kHz

GHz

Section

5-Circuit

Description

Provides

basic

and



The

output

frequency

the

502 can

adjusted

general

circuit

analysis

that

may

useful

when

servicing



track

the

spectrum

analyzer

frequency

within

The

operating

the

instrument



502,

a two-wide

unit

compatible

with

the

500

Modu-

lar

Series

instruments,

normally

used

with

the

503

(Option

07)

Power

Module

This

permits

the

optional

use

Section



6-Maintenance



Instructions



Describes



digital

counter

such as the

508A

with

Option

routine

and

corrective

maintenance

procedures

with



bright

dot,

on the

spectrum

display,

identifies

the

frequency

detailed



instructions



for



replacing



assemblies,



sub-



location

the

sweep

that

indicated

by thecounter

High-

assemblies,

and

individual

components

exploded



range

counters

GHz

can

used

connecting

drawing

part

Section 10



their

input

the

502

AUX

OUT

connector

REV

DEC

1981

GENERAL

INFORMATION

AND

SPECIFICATIONS

Section

1-TR

502

Section

9-Diagrams

Provides

functional

block

diagram

and

detailed

circuit

schematics

Located

adja-

cent

the

diagram

(usually

the

back

the

preceding

diagram)

are

pictorial

layout

drawings

which

show

sub-

assembly

and

component

locations

Voltage

and

signal

level

information,

applicable,

included

aid

troubleshooting

Section

10-Mechanical

Parts

List,

Exploded

Drawings

and

Accessories

Provides

information

necessary

order

replaceable

mechanical

parts

The

Parts

List

cross-

referenced

the

Electrical

Parts

List

when

appropriate

Exploded

drawing

shows

sequence

assembly

and

identifies

assemblies

Changes

and

Corrections

Provides updating

informa-

tion

for

the

manual

the

form

inserts

These

inserts

are

incorporated

into

the

manual

text

and

diagrams

when

the

manual

updated

General

Information

and

Specifications-TR

502

The

following

characteristics

and

features

apply

the

502

and

502/7L13

Spectrum

Analyzer

system

They

are

applicable

over the

environmental

specification

limits

for

the

500-

and

7000-Series

mainframes

Frequency

Range



The

502

tracks

the

7L13

tuned

input

frequency from

100

kHz

GHz

Output

Level

Two

coaxial cables,

Maximum

Out-



dBm

±0

put

Position



inches

Logic

Interface

Cable

dBm)



Adapter,

male

BNC

female"

Range



-59

dBm

and



Adapter,

SMA

Male

steps



BNC

Female

Retainer

Plug-in

Relative

Level



±0

dB/1

step

maximum

Manual,

Instruction

Accuracy



±2

front

panel

control

provides

additional



Optional

Accessories

attenuation



attenuator

Output

Impedance



nominal,

VSWR

less

GHz

Flatness

ELECTRICAL

CHARACTERISTICS

502



Within

±0

.65

dB,

from

100

kHz

GHz

502/7L13



Within

±1

.65

dB, from 100

kHz

System



GHz

and

within

±2dB

GHz

Dynamic

Range

502/7L13



110

System

Residual

(peak

peak)

Installation

502



less

This instrument

may

shipped

installed

the

502/7L13



less



500-Series

Power

Module

and

ready

for

use

as a

bench

instrument,

may

shipped

as an

individual

Auxiliary

Output



rms

minimum,

into

i2load



unit

The

instrument

held

the

mainframe

means

mounting

screw

and

shoulder

washer

through

Spurious

Output



existing

hole

bottom

cross-member

The

retainer

screw

threads

into

a bracket

that

mounted

the

back

Harmonic



below

the

carrier



the

502

(See

list

accessories

ACCESSORIES

Content



tab

page

the

back

this

manual

Removethis

screw

Non-Harmonic



below

the

carrier



free

the

502

from

the

mainframe

shipped

Content



individual

unit,

install

the bracket

assembly

removing

the

two

center

screws

the

rear of

the

502

and

use

ENVIRONMENTAL

CHARACTERISTICS



them

mount

the bracket

;

install

the

502

into

the

500

Power

Module

illustrated

Fig

1-2

After

installation,

connect

the

500

suitable

power

This instrument

will

meet

the

electrical

characteristics



source

and

proceed

directed

the

Operating

Instruc-

over the

environmental

limits

the

500-Series

Test



tions

section

this

manual

and

Measurement

System

Power

Module

Complete

details

test

procedure, including

failure

criteria,

etc

can

be obtained

from

Tektronix,

Inc

Contact

your

local

Tektronix

Field

Office

representative

Operating

and

Storage

Requirements

Operating

Temperature

Range



0°C

+55°C

Storage

Temperature

Range



-54°C

+75°C

ACCESSORIES

StandardAccessories

Refer

the

ReplaceableMechanical

Parts

Section

for

part

numbers

standard

and

optional

accessories

Initial

Inspection

INSTALLATION

This instrument

was

inspected both

mechanically

and

electrically

before

shipment

should

free of

mars

scratches

and

electrically

meet

exceed

all

specifications

confirm

this,

inspect

the

instrument

for

physical

damage

incurred

transit

and

test

the

electrical

performance

following

the

Operating

Instructions

Section 2

and

Performance

Check

Procedure

Section

there

damage

deficiency,

contact

your

local

Tektronix

Field

Office

representative

REV

MAY,

1978

the

Tektronix

instrument

shipped

Tektronix

Service

Center

for

service

replacement,

attach

a tag

showing

;

owner

(with

address)

and

the

name

individual

your

firm that

can

contacted,

plus

complete

instrument

serial

number

and

description

the

service

required

General

Information

and

Specifications-TR

502

Fig

1-2

Plug-in

Module

Installation/Removal

1735-2

REPACKAGING

FOR

SHIPMENT



Wrap

the

instrument

heavy

paper

orpolyethylene

sheeting

protect

the

finish

of the

instrument

Protect

the

front

panel

with

urethane

foam

cardboard

strips

Cushion

the

instrument on

all

sides

tightly

packing

dunnage

urethane

foam

between

the carton

and

the

instrument,

allowing

three

incheson

all

sides

Seal

the

carton

with

shippingtape

industrial

stapler

Save

and

re-use the

shipping

container

your

instru-



TABLE

1-1

ment

was

shipped

the

original

packaging

not

available or

unfit

for use,

repackage

follows



GrossWeight

(Ib)



Carton

Test

Strength

(Ib)

10-30

275

30-120



375

Obtain

shipping

container

made

heavy

cor-



120-140



500

rugated

cardboard

wood

with

inside

dimensions



140-160



600

less

than

six

inches

than

the

instrument

dimensions

;

this

will

allow

room

for

cushioning

Refer

Table

1-1 for



you

have

any

questions,

contact

your

local

Tektronix

carton

test

strength

requirements



Field

Office

representative

Introduction



VAR

This

control

provides

continuous

output

level

This

section

describes the

function

the

front

panel



adjustment

over a

range

;

itaffects

both

the

OUT

controls

and

connectors,

installation

the

502

into



and

AUX

OUT

levels

the

500-Series

mainframe,

interface

connections

the



spectrum



analyzer



and



frequency



counter,



ad-



DOT

INTENSITY

This

control

sets

the

brightness

the

justmentsrequiredtocalibratetheTR

502

the

spectrum



displayed

frequency

indicating

dot

when

the

502

analyzer,

and

how

use the

tracking

generator



used

with

502

Option

equivalent

frequency

counter,

and

the

502/7L13

Spectrum

Analyzer

operating

the

sweep

stop

mode

About

the

Tracking

Generator

The

502

Tracking

Generator

two

wide

plug-in

unit

for

the

500-Series

(Option

Power

Modules

operates with the

7L13

7L12 Spectrum

Analyzer

provide a

constant,

level-calibrated

signal

source,

that

precisely

tracks

the

spectrum

analyzer

input

frequency

from

100

kHz

GHz

Signal

output

level

calibrated

and

adjustable

from

dBm

-59

dBm

steps

The

Spectrum

Analyzer/Tracking

Generator

system can

used

display

frequency

response

carious devices

such

filters,

amplifiers,

etc

that

are

connected

between

the

tracking

generator

OUTput

and

the

spectrum

analyzer

input

connector

When

the

502

installed

a modified

three-wide



AUX

OUT

source

the

output

signal

for

auxiliary

larger,

power

module,

frequency

counter

such

as the



test

equipment

such

frequency

counter

This

502 can

connected

the

AUX

OUT

and

used



output

connector

must

be terminated

load to

accurately

measurethefrequencyforanyfixedpositionof



maintain

flatness

span

When

the analyzer

is in

the

non-sweep

mode,

the

502

output

signal

and

the

counter

reads

continuously

502

Option

similar

counter



INPUT

CONNECTORS

used, the

TRACKING

GEN

LOGIC

interfaced

with

the

7L13 Spectrum

Analyzer

operational

logic

from

the



1st

and 2nd

These

interface

the

502

controls

the

sweep

function

the

spectrum



spectrum

analyzer

and2nd

Output

connec

analyzer

and

the

frequency

counting

the

counter

dot



tors

displayed

sweep

center

indicate

where

and

when

the

frequency

count

taken



TRACK

GEN

LOGIC

Interfaces

operational

logic

between

the

tracking

generator

and

the

spectrum

The

502

installed

the

500-Series

mainframe



analyzer

operate

the

system

with

compatible

aligning

the

upper

and

lowerguide

rails

with

the

plug-in



frequency

counter

compartment

tracks

and

pushing

the

502

into

the

compartment

until

the

front

panel

flush

with

the

mainframe

front

panel

remove,

pull

the

release

latch

disengage

the

locking

mechanism

and

pull

t(~e

unit

out



Operational

Check

and

Calibration

See

Fig

1-2



The

502

plugs

into

and

receives

its

power

from

500-Series

mainframe

operates

with

the

7L13

7L12

Spectrum

Analyzer

The

1st

and 2nd

signal

from

Function



the



Front



Panel



Controls



and



the

spectrum

analyzer

are

applied,

via

coaxial cables,

Connectors



the

1st

and 2nd

INput

connectors

for

the

502

the

The

following

description

the

controls

and



502/7L13

system

used

with

502

Option

connectors

the

502



Digital

Counter, a

third

cable

interfaces

between

the

502 and

7L13 Spectrum

Analyzer

supply

the

OUTPUT

LEVEL

Selects

attenuation



necessary

logic

data

for

the

various

counter

and

spectrum

steps

the

calibrated

output

signal to

the

OUT

;



analyzer operating

modes

This

interface

cable

used

has

effect

the output

level of

the

AUX

OUT



when

counter

part of

the

system

REV

MAY,

1978

OPERATING

INSTRUCTIONS

Section

2-TR

502

TRACK

ADJUST

Adjusts the

frequency

offset

between

the

502

Tracking

Generator

output

signal

and

the

tuned

input

frequency

the

spectrum

analyzer

OUTPUT

CONNECTORS

OUT

dBm

-61

dB,

S2,

signal

source

with

frequency,

that

tracks

the

spectrum

analyzer

Output

level

depends

the

setting

OUTPUT

LEVEL

and

VAR

controls

2-7

Operating

Instructions-TR

502



Preliminary



Set the

spectrum

analyzerSpan/Divto

Max,

Resolu-



Insert

the

502

500

power

unit

mainframe



Lion to

MHz,

Display

Mode

to 10

dB/Div,

Reference

(TM

500

Option

and

the

spectrum

analyzer

(7L13)

into



Level

dBm,

and

switch

the

power

all

units

7000-Series

mainframe



Using

the

coaxial cables,

supplied

with

the

standard

accessories,

connect

the

1st

and

2nd

Output

ports

the

spectrum

analyzer

the

and

2nd

Input

ports



Check

Output

Level

the

502,

then

connect

the

OUT

the

Input

the

spectrum

analyzer

frequency

counter

used,



Change

the

spectrum

analyzer

Reference

Level

connect

the

AUX

RFOUTput

the

502

the

Input



dBm

Set

the

502

OUTPUT

LEVEL

and

VAR

the

counter

Fig

2-1

illustrates

system

hookup



controls

for

output

dBm

(fully

clockwise)

2-2

FREQUENCY

COUNTER

AUX



OUT



TRACK

GEN



TRACK

INPUT

LOGIC



GEN

N-TO-BNC

ADAPTER

TR502

3mm,

SMA-TO-BNC

ADAPTER

2nd

7st

Set the

OUTPUT

LEVEL

the

502

-10

dBm

and

check

for

level

(±3 dB)

across the

spectrum

analyzer

display

(100

kHz

GHz)

Fig

2-1

502/7L13

Spectrum

Analyzer

System

with

FrequencyCounter

aooo

0000

0 0

1735-3A

REV

MAY,

1978

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