Wavetek 3000 Manual de usuario

INSTRUCTION

MANUAL

MODEL

3000

SIGNAL

GENERATOR

WAvaTE

INSTRUCTION

MANUAL

MODEL

3000

SIGNAL

GENERATOR

Serial



/2_5

THIS

DOCUMENT

CONTAINSINFORMATION

PROPRIETARY

WAVETEK

THE

INFORMATION

THIS

DOCUMENT

NOT

USED

DUPLICATED

ANY

MANNER

WITHOUT

THE

PRIOR

APPROVAL,

WRITINGOF

WAVETEK

PRODUCTS,

INC

5808

CHURCHMAN

BY-PASS

INDIANAPOLIS,

46203-6109

TEL

317/788-9351

TLX

(INST

6842041

FAX

317/788-5999

2-88

WARRANTY

All

Wavetek

instruments

are

warranteed

against

defects

material

and

workmanship

for

period

one

year

after

date of

manufacture

Wavetek

agrees to

repair

replace

any

assembly

component

(except

batteries)

found

defective

under

normal

use

during

this

period

Transfermatic

Switch

assemblies,

manufactured

by Wavetek,

are

unconditionally

warranteed

for

the

life

of the

instrument

Wavetek's

obligation

under

this

warranty

limited

solely

repairing

any

such

instrument

which,

Wavetek's

sole

opinion,

proves

defective

within

the

scope

the

warranty

when

returned

the

factory or to an

authorized

service

center

Transportation

the

factory

service

center

prepaid

purchaser

Shipment

shouldnot

made

without

prior

authorization

Wavetek

This

warranty

does

not

apply

any

products

repaired

altered

persons

not

authorized

Wavetek,

not

accordance

with

instructions

furnished

Wavetek

the

instrument

defective

as a

result

of misuse,

improper

repair,

abnormal

conditions

or operations,

repairs

will

billed at

cost

Wavetek

assumes

responsibility

for

its

product

being

used

hazardous

dangerous

manner

either

alone

conjunctionwith

other

equipment

High

voltage

used

some

instruments

may

dangerous

misused

Special

disclaimers

apply

to these

instruments

Wavetek

assumes

liability

for

secondary

charges

consequential

damages

and,

any

event,

Wavetek's

liability

for

breach

warranty

under

any

contract

otherwise

shall

not exceed the

purchase

price

of the

specific

instrumentshipped

and

against

which

claim

made

Any

recommendations

made

Wavetek

for

use

its

products

are

based

upon

tests

believed to

reliable,

but

Wavetek

makes

warranty

of the

results

to be

obtained

This

warranty

lieu

all

other

warranties,

expressed

or implied,

and

representative

person

authorized

represent or

assume

for

Wavetek

any

liability

connection

with

the

sale

our

products

other

than

set

forth herein

SCOPE

THIS

MANUAL

This

manual

provides

descriptive

material

and

instructions

for the

installation,

operation,

main-

tenance,

and

repair

of the

WAVE

Model

3000

Signal

Generator

SECTION

CONTENTS

GENERAL

INFORMATION

INTRODUCTION

.....

....

.... .

1-1

SPECIFICATIONS

.....

...

. .

1-2

OPTIONS

.....

......

....

1-4

ACCESSORIES

....

......

...

1-4

OPERATION

INTRODUCTION

......

...

.....

2-1

MECHANICAL

INSTALLATION

. .

......

2-1

ELECTRICAL

INSTALLATION

. .

...

....

2-2

DESCRIPTION

FRONTPANEL

. .

...

. .

2-2

2 .5

DESCRIPTION

REARPANEL

....

...

2-4

2.6

INSTALLATION

CHECKS

........

. .

2-5

2 .7

OPERATING

PROCEDURE

...

.......

2-7

THEORY

OPERATION

INTRODUCTION

........

. .

...

3-1

OVERALLBLOCKDIAGRAM

.....

... .

3-1

3 .3

C315

- METERBOARD

........

3-8

3 .4

C316

MODULATION

BOARD

.......

. .

3-9

3 .5

DPS2A-

POWER

SUPPLY

. .

......

3-10

DELETED

. .

......

3-10

M9W

SWEEP

OSCILLATOR

...

.....

3-11

M10W

OUTPUT

AMPLIFIER

. .

...

....

3-12

M172

SWEEP

DRIVE/DAC

.....

....

3-13

.10

M29-1

FM REFERENCE

........

. .

3-14

.11

M30

CRYSTAL

SOURCE

.......

3-15

.12

M31

kHz

STEPS

...........

3-16

.13

M32 - MHz

STEPS

...........

3-17

.14

M33

NARROW

OSCILLATOR

LOCK

......

3-19

.15

M34

WIDE

OSCILLATOR

LOCK

.......

3-20

PERFORMANCE

TESTS

4 .1

INTRODUCTION

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

4-1

4 .2

FREQUENCY

RANGE

AND

RESOLUTIONTEST

. . .

4-2

4.3

FREQUENCY

ACCURACYTEST

.........

4-3

4.4

FREQUENCY

STABILITY

TEST

........

4-5

4.5

OUTPUT

LEVELACCURACY

TESTS

.......

4-5

4 .6

HARMONICS

TEST

...... .

.....

4-11

NON-HARMONIC

TEST

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

4-12

RESIDUAL

TEST

.........

4-14

RESIDUAL

FM TEST

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

4-15

.10

INTERNAL

MODULATION

FREQUENCYTEST

...

4-16

.11

PERCENTAM ACCURACYTEST

........

4-17

.12

BANDWIDTHTEST

. .

...

.......

4-19

.13

DISTORTION

TEST

...

.......

4-21

.14

DEVIATION

ACCURACY

TEST

...

....

4-22

.15

FM BANDWIDTH

TEST

.....

4-23

CONTENTS

CONTINUED

.16

DISTORTION

TEST

..... ......

4-25

.17

IMPEDANCE

TEST

.....

4-26

.18

RFI

TEST

....... .

....." "

4-27

SECTION

MAINTENANCE

5 .1

INTRODUCTION

.......

. .

5-1

SERVICE

INFORMATION

..... .....

5-1

CALIBRATION

PROCEDURE

... ......

5-3

TROUBLESHOOTING

....

.......

5-7

SECTION

REPLACEABLE

PARTS

6 .1

INTRODUCTION

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

. .

6-1

MANUFACTURER'S

CODE

......

... .

6-1

SECTION

SCHEMATICS

INTRODUCTION

....

...

..""."

7-1

SCHEMATICNOTES

. .

...

.......

7-1

7 .3

ABBREVIATION

CODE

....

.......

7-2

7 .4

SCHEMATIC

INDEX

...

.......

. .

7-2

SECTION

MANUAL

CHANGES

AND

OPTIONS

INTRODUCTION

......

....

.."

8-1

MANUAL

CHANGES

......

. .

.....

8-1

8 .3

OPTIONS

. .

......

...

.....

8-1

INTRODUCTION

The

Model3000

rugged,

completely

solid-state

Signal

Generator

covering

the

frequency

range

520

MHz

The

output

can

amplitude

frequency

modulated

and the

level

canbe

set

be-

tween

+13

and

-137dBm

.1 .1

FrequencyCharacteristics

The

frequency

the

unit

set

via

front

panel

lever/indicator

switches

which

yield

resolution

kHz

addition,

remote

frequency program

mability

standard



Thisfeaturemakes

the

Mode1

.3000

Signal

Generator

ideally

suited

for

both

semi

and

fullyautomatic

test

applications

The

accuracy

the

instrument

based

on a

crystal-controlled

oscillator

that

serves

stable

frequency

source

for

the

derivation

various

reference

frequencies

Thesereference

frequencies

arefed

phase lockedloops

that

enable

the

Model

3000

provide

high

stability

signals

to an

accuracy

.0017

over

its

specified

MHz

520

MHz range

the

and

modes

operation

the

overallaccuracy

the

unit

.0017

including

short

term

drift,

long term

drift,

incidental

and

variations

due

line

voltage

changes

and

temperature

changes

the

mode,

the

frequency

accurate

.0017

t10

kHzup

kHz

peak

deviation

and

.0017

t45 kHz

500 kHz

peak

deviation

ModulationFeatures

TheModel

3000also

featuresboth

inter-

nal

and

external

amplitude

and

frequency

SECTION

GENERAL

INFORMATION

modulation

capabilities

Internal

modulation

frequencies

400

and

kHz

are

available



the

FM mode

operation,



peakdeviations

up to

500

kHz

are

attainable



the

AM mode

amp-

litude

modulation

907

attainable

With

the

MODULATIONMODE

switch

either

the

positions

and

the

MODULATION

FREQUENCY

switch

the

vernier

posi-

tion,

the

front panel slide

control

po-

tentiometer

can

used

continuously

vary

the

output

frequency

over

either

kHz

500 kHz

range

With

the

MODULATIONMODEswitchin

the

positionand

the

MODULATION

FREQUENCY

switch

the

vernier

position

the

out-

put

amplitude

can

be varied via

the

same

front

panel

slide

control

This

provides

a reference

attenuator

for

variation

signal level around

specific

point

interest

This

oper-

ationcan

also

enable

the

user

obtain

greater

than

milliwatts



power

over

portions

the

band

.1 .3

OutputLevel

Features

The

output

power

indicated

frontpanel meter

calibrated

both

dBmandVrms

fifteen-position,

step

attenuator

used

conjunction

withan

vernier

control

provides

the

userwith

range

+13 dBm

-137

dBm

The

calibrated

output

the

Model

3000

leveled

within

±0

.75

dB across

the

complete

frequencyrange

the

instrument

GENERAL

INFORMATION

SPECIFICATIONS

.2 .1

Frequency

RANGE

READOUT

RESOLUTION

ACCURACY

STABILITY

OutputLevel

POWERLEVEL

RANGE

LEVEL

CONTROL

TOTALLEVEL

ACCURACY

ACCURACYBREAKDOWN

.2 .3

Output

Characteristics

IMPEDANCE

SWR

.2 .4

Spectral

Purity

HARMONIC

OUTPUT

SUB-HARMONICS

MHz

520

MHz

selectable

kHz

steps

digit

lever/indicator

switches

kHz

CW andAM modes



±0

.001%

after

min

(Typ ±0.0002%

after

hourswithin

months

calibration)

FMx1

mode



±(0

.001%

+10

kHz)

FMx100

mode



±(0

.001%

+45

kHz)

and

AM modes



ppm/hr

FMx1

mode

500

Hz/10min

+13

dBm

-137

dBm

to .03 vV)

Continuously

adjustable

in 10

steps

and

with

vernier

Output level

in-

dicated

front panel meter

calibrated

volts

and dBm

+13

-7

dBm



±1 .25



(Typ

±0

.75

dB)

-7

-77

dBm



±1 .95



(Typ

±1 .25

dB)

<-77

dBm



±2 .75



(Typ

±1

dB)

Flatness

(+13

to -7 dBm)

±0

.75

(Typ

±0

dB)

Output

Meter



±0

Step

Attenuator



±0

(±0

calibration

error)

±1

130

(±0

calibration

error)

50 ohms

outputlevels

below

>30dB

below

fundamental

from

520 MHz

>26

dB below

fundamental

from

MHz

Nonedetectable

NON-HARMONICS

RESIDUAL



>65

below

carrier

in a 50

kHz

post-detection

bandwidth

RESIDUAL

.2 .5

Amplitude

Modulation



NOTE

These

specifications

apply

for

carrier

level

<+3dBm



possible

above

+3 dBm

thepeak

output

does

not exceed

+13 dBm

FREQUENCY

Internal



400

and

kHz ±5%

External



kHz,

bandwidth),

input

level

required

volts

p-p

into

600

ohm



pro-

videcalibrated

modulation

control

RANGE



0 to

90%

GENERAL

INFORMATION

<200

Hz in 50

kHz

post-detection

bandwidth

(Typ

100

Hz)

<100

Hz in

300

kHz

post-detectionbandwidth

(Typ

Hz)

DISTORTION



<3%

distortion

to70%

(

:<5%

90% AM)

frequency

kHz

(Typ

<1 .5I to

30%

AM)

MODULATIONCONTROL



Calibratedfrom

0 to

1001

ACCURACY



t(5%of

reading

+5I) at

frequency

kHz

.2 .6

Frequency

Modulation

FREQUENCY

Internal



400

and

kHz,

±5%

External



DC to 25 kHz,

bandwidth),input

level

required=

volts

p-p

into

600

ohms

pro-

vide

calibrated

deviation

control

DEVIATIONPEAK



Two bands,

kHz,

and

500 kHz

DEVIATIONCONTROL



Calibrated

from

kHz, xl

and

x100

ACCURACY



±250

range

±35 kHz

on x100

range

DISTORTION



<4%

kHz

deviation),

<2%

(10

500

kHz

deviation)

frequency

kHz

FundamentalNon-HarmonicNon-Harmonic

(MHz) (MHz)

level

(dB

be-

low

fundamental)

>60

250

250 >65

350

350 >55

520

to 1000

>35

GENERAL

INFORMATION

.2 .7

Programmability



Frequency

programmablevia

rear

panel

input

connectorusing

BCD-coded

TTL

voltages

BCD-coded

contactclosures

.2 .8

General

OPERATING

TEMPERATURE



25 t5

oC,

all

specifications

apply

t15

0C,

with

slight

degradation

speci-

fications

OUTPUTCONNECTOR



TypeN

RFI



<1 VV

induced

two-turn,

one-inch

diameter

loop

which

held

one

inch away

fromanysurface



Loop

feeds

ohmre-

ceiver

;

POWER



115/230

±10%,

50/60

Hz,

DIMENSIONS



(30

cm)

wide,

5k in

(13

cm)

high,

3/4

(34

am)

long

WEIGHT



25 lb



(11

kg)

net, 30 lb

(13

kg)

shipping



OPTIONS



Options

1A, 1B, 4,

and

are

factoryinstalled

Option

may

factory

field

installed

Level

Programming

For

bothOptions

and

1B,

the

instruments

are

calibrated

for

+13 dBmat

MHz

a standard

unit,

but

due

greater

losses

Programmable

Attenuators,

calibrated

output

onlyguaranteed

+12 dBm

Option

Program

Level

Range

109

dB in

steps

(programmed

via

rear-panel

plug)

dB reference

+13

dBm

Front-panel

level

range

Continuously

adjustable

from+13

dBm

-97 dBm

in 10 dB

steps

and

VERNIER

Reverse

power

protection

also

providedby

this

option

Option

Program

Level

Range

to 90 dB

in 10

steps

(programmed

via

rear-panel

plug)

reference

set

front-panel

attenuators

Remotecontrol

CW/AMmode

also

provided

Front-panel

Level

Range



See

Section

.2 .2

Reverse power

protection

also

provided

this

option

.3 .2



ReversePowerProtection



Option

"3"

preventsdamage

the

instrument

(100

max)

or RF

(50

max)voltages

are

accidentally

applied

the

output

connector

(This

option

not

required

whenusingoptionlA

1B)

.3 .3

Auxiliary

Output



Option"4"

provides

leveled

(-10 dBm)

signal

available

from

rearpanel

BNC

con-

nector

Normally

used

drive

frequency

counter

.3 .4

LowLeakage

ACCESSORIES

GENERAL

INFORMATION

Option

reduces

the

leakagespecification

Section

.2 .2

by a factor

Furnishedwithinstrument



Instruction

Manual

Rear-panel

PROGRAMMING

plug

and

pins

Additional

Accessories



Rack

Mount

Kit,

K108

Programmers

for

single

push-button

or GPIB

control

selectedfrequencies

and

output

levels,

Series

3900

Module

Service

Kit,

K004

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