Tektronix 1401 User manual

INSTRUCTION

MANUAL

1401

Serial

Number

02018

SPECTRUM

ANALYZER

MODULE

Tektronix

Inc.

●

Box

500

Beaverton

Oregon

97005

Phone

644-0161

Phone

644-0161

Cables

Tektronix

070-1071-00

1070

arou

WARRANTY

All

Tektronix

instruments

are

warranted

against

defective

materials

and

workmanship

for

one

year

Tektronix

transformers

manufactured

our

plant

are

warranted

for

the

life

the

instrument

Any

questions

with

respect

the

warranty

mentioned

above

should

taken

with

your

Tektronix

Field

Engineer

Representative

All

requests

for

repairs

and

replacement

parts

should

directed

the

Tektronix

Field

Office

representative

your

area

This

procedure

will

assure

you

the

fastest

possible

service

Please

include

the

instrument

Type

(

Part

Number

)

and

Serial

Model

Number

with

all

requests

for

parts

service

Specifications

and

price

change

privileges

reserved

1970

Tektronix

Inc.

Beaverton

Oregon

Printed

the

United

States

America

All

rights

reserved

Contents

this

publication

may

not

reproduced

any

form

without

permission

the

owner

U.S.A.

and

foreign

Tektronix

products

covered

U.S.

and

foreign

patents

and

patents

pending

TABLE

CONTENTS

SECTION

SPECIFICATIONS

Introduction

Electrical

Characteristics

Power

Requirements

SECTION

Environmental

Characteristics

Physical

Characteristics

OPERATING

INSTRUCTIONS

Accessories

for

the

1401

Installation

Power

Source

and

Application

Battery

Care

Function

Controls

and

Connectors

First

Time

Operation

General

Operating

Information

Signal

Application

Resolution

and

Frequency

Span

Using

the

Video

Filter

Selecting

Sweep

Rates

Triggering

the

Sweep

Externally

Using

External

Sweep

Source

Sweeping

the

Companion

Oscilloscope

422/1401

Compatibility

453/1401

and

454/1401

Compatibility

Alternate

Procedure

for

Most

Oscilloscopes

CIRCUIT

DESCRIPTION

Introduction

and

Block

Diagram

Description

Detailed

Circuit

Description

Section

Circuit

Logarithmic

Amplifier

Linear

Amplifier

and

Video

Circuits

Sweep

Generator

Frequency

Span

and

Center

Frequency

Marker

Generator

Sweep

Shaper

Power

Pack

Page

1-1

1-2

1-3

2-1

2-3

2-5

2-8

2-10

2-11

2-12

2-13

3-1

3-3

3-4

3-5

3-7

3-8

3-9

3-12

1401

SECTION

TABLE

CONTENTS

(

cont

)

MAINTENANCE

Access

the

Interior

Preventive

Maintenance

Procedure

Troubleshooting

Corrective

Maintenance

Procedures

Obtaining

Parts

Soldering

Power

Pack

Servicing

Replacing

Circuits

Boards

Assemblies

Replacing

Square

Pins

for

Multi

Connectors

Cam

Switch

Repair

Replacement

Module

and

Sub

assemblies

Physical

Location

Components

PERFORMANCE

CHECK

Introduction

History

Information

and

Equipment

Require

ments

for

the

Performance

Check

Short

Form

Procedure

General

Information

Procedure

Preliminary

Battery

Charge

Level

Indicator

Operation

Center

Frequency

Range

and

Accuracy

Frequency

Span

Resolution

Bandwidth

Incidental

Video

Filter

Operation

Dynamic

Range

Display

Functions

Attenuator

Selector

Check

Video

Output

Level

Sensitivity

Display

Flatness

Spurious

Response

Intermodulation

Distortion

Sweep

Rate

Range

and

Sweep

Output

Amplitude

External

Trigger

Operation

External

Sweep

Voltage

Operation

CALIBRATION

ADJUSTMENT

PROCEDURE

Introduction

History

Information

and

Equipment

Required

Short

Form

Procedure

Preliminary

Procedure

Set

Battery

Charge

Current

Check

Adjust

Power

Regulation

Voltages

Detailed

Alignment

Procedure

and

Circuits

General

Alignment

and

Sections

Frequency

Span

and

Center

Frequency

Accuracy

Adjustments

Adjustment

Linearity

Gain

Page

4-1

4-2

4-7

4-9

4-10

4-11

5-1

5-3

5-4

5-5

5-6

5-7

5-8

5-9

5-10

5-11

5-12

6-1

6-2

6-3

6-6

6-7

6-11

SECTION

TABLE

CONTENTS

(

cont

)

SECTION

ELECTRICAL

PARTS

LIST

Abbreviations

and

Symbols

Parts

Ordering

Information

Index

Electrical

Parts

List

Electrical

Parts

List

SECTION

DIAGRAMS

CIRCUIT

BOARDS

MECHANICAL

AND

REPACKAGING

PARTS

ILLUSTRATIONS

Symbols

and

Reference

Designators

1401

Waveform

and

Voltage

Information

MECHANICAL

PARTS

LIST

Mechanical

Parts

List

Information

Index

Mechanical

Parts

Mechanical

Parts

List

Accessories

Abbreviations

and

symbols

used

this

manual

are

based

taken

directly

from

IEEE

Standard

260

Standard

Symbols

for

Units

MIL

STD

12B

and

other

standards

the

electronics

industry

Change

information

any

located

the

rear

this

manual

1401

iii

1401

Com

OFF

POWER

BATTERY

CHARGE

LEVEL

GAIR

ATTEN

VERTICAL

DISPLAY

LOG

LIN

1.500

250

INPUT

500

-30

dBm

MAX

1401

SPECTRUM

ANALYZER

MODULE

1401

TEKTRONIX

SPECTRUM

ANALYZER

MODULE

CENTER

FREQ

MHz

MARKER

FINE

012

VIDEO

FILTER

FREE

RUN

OFF

TRIG

RESOLUTION

kHz

EXT

MODE

SWEEP

Fig

1-1

1401

Spectrum

Analyzer

Module

1000

100

TEKTRONIX

INC

BEAVERTON

OREGON

U.S.A.

SLOW

RATE

FREQ

SPAN

MHz

DIV

VAR

(

CAL

)

FAST

0.01.02.05

SECTION

SPECIFICATION

Change

information

any

affecting

this

section

will

found

the

rear

the

manual

Introduction

The

1401

Spectrum

Analyzer

Module

compact

port

able

instrument

designed

operate

with

Tektronix

Type

323

portable

oscilloscope

that

the

two

instruments

com

prise

portable

spectrum

analyzer

system

that

can

used

for

site

spectrum

surveillance

RFI

testing

etc.

The

1401

has

swept

front

end

which

provides

fre

quency

span

from

MHz

500

MHz

linear

logarith

mic

display

provided

Dynamic

range

the

logarithmic

display

least

The

1401

will

operate

from

any

one

three

power

sources

;

internal

rechargeable

batteries

external

(

)

and

line

Power

consumption

about

4.5

watts

and

watts

when

powered

from

source

WARNING

When

the

1401

used

portable

instrument

common

ground

return

the

signal

source

must

provided

This

insures

that

measurements

are

reliable

and

eliminates

any

possibility

the

instrument

case

becoming

elevated

the

potential

the

signal

source

The

instrument

power

pack

provided

with

three

terminal

polarized

power

receptacle

and

three

wire

line

cord

for

applying

the

power

pack

The

third

wire

directly

connected

the

power

pack

chassis

which

con

nected

interconnecting

wires

the

1401

chassis

This

grounds

the

instrument

when

operating

from

source

protect

operating

personnel

recommended

national

and

international

safety

codes

Performance

Conditions

The

performance

limits

this

section

are

valid

with

the

following

conditions

Power

the

instrument

from

the

battery

external

source

The

instrument

must

have

been

calibrated

with

ambient

temperature

(

Section

provides

description

the

procedure

for

checking

the

1401

)

The

instrument

must

operated

within

ambient

temperature

-15

and

must

allowed

warm

for

least

minutes

after

switching

the

POWER

position

ELECTRICAL

CHARACTERISTICS

Characteristic

Center

Frequency

Accuracy

FINE

Control

Range

Sensitivity

Resolution

Band

width

kHz

100

kHz

1000

kHz

Frequency

Span

Calibrated

MHz

Div

Range

with

division

display

Accuracy

Linearity

Frequency

Stability

Performance

Requirement

MHz

500

MHz

continuously

variable

Within

(

MHz

the

1-500

dial

readout

)

FINE

control

MHz

within

least

100

dBm

1401

least

-90

dBm

least

-80

dBm

500

MHz

kHz

Div

MHz

Div

sequence

Within

FREQ

SPAN

MHz

Div

selection

with

VARiable

control

CAL

position

Within

with

division

dis

play

Within

kHz

over

any

minute

interval

after

minute

warmup

Temperature

efficient

less

than

0.5

MHz

1-1

Specification

1401

ELECTRICAL

CHARACTERISTICS

(

cont

)

Characteristic

Intermodulation

Distortion

Maximum

Input

Power

ATTEN

Display

Flatness

Resolution

Band

width

Incidental

GAIN

Control

Range

Dynamic

Range

LOG

Display

VIDEO

OUTPUT

External

Trigger

Level

Duration

Frequency

External

Sweep

Level

Performance

Requirement

1-2

Down

least

-30

dBm

(

Linear

operating

limit

)

+30

dBm

(

Power

rating

atten

uator

)

Within

maximum

amplitude

variation

over

the

entire

frequency

range

1000

kHz

100

kHz

within

Sweep

Range

(

FREE

sweep

less

least

100

RUN

Mode

)

sweeps

second

than

kHz

MHz

center

frequency

kHz

less

500

MHz

center

frequency

least

1.2

for

full

screen

deflection

+10

peak

least

100

MHz

less

with

corresponding

frequency

and

corres

ponding

500

MHz

Maximum

Sweep

100

sweeps

second

Rate

Maximum

Input

Voltage

ELECTRICAL

CHARACTERISTICS

(

cont

)

Characteristic

ATTENuator

Accuracy

Sweep

Output

(

FREE

RUN

EXT

TRIG

Mode

)

Characteristic

Line

Voltage

Range

Frequency

POWER

SOURCE

REQUIREMENTS

Power

Consumption

External

Volt

age

Range

Power

Consump

tion

Battery

Pack

Charge

Time

Operating

Time

(

charge

temperature

operating

tem

perature

)

Characteristic

Performance

Requirement

Temperature

steps

Within

(

0.5

read

ing

)

Without

Batteries

0.25

Performance

Requirement

136

180

272

440

watts

maximum

115

+16

Surge

current

requirement

ampere

4.5

watts

maximum

Six

size

NiCd

cells

ENVIRONMENTAL

CHARACTERISTICS

hours

for

full

charge

least

3.5

hours

Performance

Requirement

Non

operating

With

Batteries

-40

ENVIRONMENTAL

CHARACTERISTICS

(

cont

)

Characteristic

Operating

Charging

Altitude

Non

operating

Operating

Vibration

Operating

Height

Width

handle

Depth

panel

cover

Depth

handle

Performance

Requirement

-15

50,000

feet

30,000

feet

;

maximum

ambient

temperature

rating

must

creased

per

1000

feet

from

15,000

30,000

feet

minutes

along

each

the

major

axes

0.025

inch

peak

displacement

(

g's

)

minute

cycles

Net

approximate

weight

accessories

Domestic

shipping

weight

Export

packed

weight

3-1

8-1

10-5

1401

lb.

≈7

1/2

Humidity

ENVIRONMENTAL

CHARACTERISTICS

(

cont

)

Characteristic

Non

operating

and

Operating

Electromagnetic

Finish

8.9

21.6

27.0

33.0

≈3.4

5.9

9.5

3-1

8-1

10-5

lb.

≈7

≈21

323

Performance

Requirement

cycles

(

120

hours

)

relative

humidity

reference

MIL

16400F

(

Par

4.5.9

through

4.5.9.5.1

Class

)

Meets

radiated

interference

require

ments

MIL

1-6181D

and

MIL

1-1690C

over

the

range

150

kHz

one

GHz

(

Instrument

must

battery

operated

)

PHYSICAL

Specification

1401

Front

panel

has

anodized

finish

;

cabinet

made

vinyl

clad

aluminum

8.9

21.6

27.0

33.0

3.2

5.9

9.5

1401/323

9-3

10-5

14-5

lb.

≈14

1/2

≈30

17.8

23.8

27.0

37.2

≈6.6

≈10.0

13.6

1-3

NOTES

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