Wavetek 2001 User Manual

ser.atNo.

l0;,l60

INSTRUCTION

M0Drr

2001

OTilERATOR

MANUAL

WTEI<'TNDTANA

AVENUE,

IST

N.

66

BEECH GROVE,

317

P.O.

INDIANA

-783-3221

BOX

16107

rNc.

190

WARRAl{TY

All Wavetek

one

year

of

component

Transfermatic

the life

any

the warranty the factory

prior

of the

such instrument

or

authorization

This warranty

Wavetek, defective

be

Mlavetek

either

be

liability

breach specific

Any

reliable,

all

represent

than

or

as a result of

billed

at

cost.

assumes

alone

dangerous

for

secondary

of warranty

instrument

recommendations

but Wavetek

other warranties,

or

forth

set

instruments

after

date

(except

Switch

batteries)

assemblies,

instrument.

which

when returned

service

center is to

by Wavetek.

does

not apply

not in

or

accordance

misuse, improper

no

responsibility

in conjunction

if

misused.

charges or

under

shipped

made

makes no warranty

expressed

assume for

herein.

are warranteed

of manufacture.

found

Wavetek's

in Wavetek's

to

the factory

to any

with

Special

any

contract or

and

against which

by Wavetek

to

manufactured

obligation

prepaid

be

products

with

instructions

for

its

other equipment.

disclaimers

consequential

or implied,

Wavetek

any liability

against defects

Wavetek

in

agrees

be defective.

by Vl/avetek,

under this warranty

sole opinion

or to an

by

proves

authorized

purchaser.

repaired

furnished

repair,

or abnormal

product

for

of the

being

apply to

damages

otherwise,

a claim

use of

its

results

used in a hazardous

High

these

shall

is made.

productsare

to be obtained.

and no representative

in

connection

material

and workmanship

to repair

under normal

are

unconditionally

to

be defective

service

Shipment

or altered

by

by Wavetek.

conditions or

voltage

used in

instruments.

and, in

any event,

not exceed

based

or

with

the

or replace

use during

is

limited

solely to

within

center.

should

persons

the

Transportation

not

lf

the

operations,

or dangerous

some instruments

Wavetek

Wavetek's

purchase

upon tests

Thiswarranty

person

sale of

our

period

for

a

any assembly

period.

this

warranteed

repairing

the

scope

be made

without

authorized

instrument

repairs

manner

assumes

liability

price

of

believed

is

authorized

products

to be

is in lieu

other

or

for

of to

by

is

will

may

no

for

the

of

to

c0lrTtNrs

SECTION

1.1

1.2

1.3

't.4

SECTION

2.1

2.2

SECTION

3.1

3.2

3.3

3.4

3.5

J.b

SECTION

4.'l

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

1

GENERAL

-

INFORMATION

INTRODUCTION.. 11

SPECIFICATIONS ....... 1-1

oPTroNS .......

ACCESSORIES 1-5

2

INSTALLATION

-

MECHANICAL INSTALLATION 2-1

ELECTRICALINSTALLATION. 22

3

OPERATING INSTRUCTIONS

-

INTRODUCTION DESCRIPTION OF DESCRIPTION OF

TYPICAL

SPECIAL OPERATING NOTES

PROGRAMMING

4

-

MECHAN ICAL AR RANGEMENT

SIMPLIFIED BLOCK DIAGRAM

POWER SWEEP SWEEP DRIVE SWEEP OSCILLATOR,

OUTPUT SWEEPOSCTLLATOR,

MARKER ADDER MARKERS

OPERATING SET

CIRCUIT DESCRIPTION

SUPPLY

RATE

AMPLIFIER, BAND 1

(MODULE

FRONT

REAR

. . 37

(MODULE

PANEL

UP

M1H)

M2H)

BAND 1

BANDS 2&3

(MODULE

{MODULE

M5H).

MgH)

MIOH) 46

(MODULE

M19H)

..

.

M6's) 48

1-4

32

3-2

3-4

35

3-6

4-3

43 44

4"4 4-6

46

4-7

4-8

SECTION

5.1

5.2

5.3

5.4

5.5

5.6

SECTION

6.1

6.2

MAINTENANCE

5

-

INTRODUCTION

SERVICE

PERFORMANCECHECKS...

MECHANICAL ADJUSTMENT CALIBRATION

TROUBLESHOOTI NG

SCHEMATICS

6

-

INTRODUCTION

MANUFACTURERS

6-3 SCHEMATIC

6.4 ABBREVIATION CODE

SCHEMATICS

AND

INFORMATION

PROCEDURE

PARTS

&

. .

CODE

NOTES

PARTS

LIST

FREQUENCY INDICATOR TAPES

OF

. .

LIST

.

51 51

53

51

58 512

6-1 6-1

62

rJ-2

FIGURE i _ MODEL

2OO1 SWEEP/SIGNAL GENERATOR

This

manual

maintenance,

SCOPE OF

provides

descriptive material and instructions for the installation, operation,

and repair of the WAVETEK

THIS MANUAL

Model

2001 Sweep/Signal Generator.

SECTION

I

1.1 INTRODUCTION

The compact

Generator

tionally wide

ruggedized inexpensive instrument.

promotes

automatic

Each

of its three

MHz,

and

operation; start-stop,

to-end, up-or-down,

1

to

sweep

curring sweeps

width,

sweep

by external voltages.

Up to six crystal controlled

frequency

Each

module has

Front Panel

adjustment

WAVETEK

programming,

offers

frequency range

sophisticated

production

frequency ranges

900 1400

at any rate

every 100 seconds.

provided

are

output attenuation all

and

or harmonic type) may be

its own Front

amplitude and

of the marker display. ln application, the

MODEL

versatility

laboratory applications, as well as

testing.

MHz)

may

or CW. lt

af

from

and the sweep frequency,

birdy marker

width

2001 Sweep/Signal

and an excep-

(1

to 1400 MHz) in a

lts

unique adaptability

(1-500

be

can

Manual,

plugged

Panel

controls enable optimum

MHz, 450 950

in

used

be

swept

50 sweeps

triggered, or re-

be

may

modules

into the 2001.

On/Off switch.

3 modes

f rom end-

per

second

controlled

(single

GENERAT

markers may be tilted 90o

with steep transition signals

applications by

modulator,

RF output for low level recovery

as an optional

Most

optional

of

for

the basic

struction.

stalled at

laterdate. This concept offers

since updated economically added

Maintenance

several

modules instead of hundreds of discrete com-

ponents.

cut to a

performed

be

Modules

ters around the world.

a

providing

feature.

features, as well as

sweep

This allows optional

the time of

and additional

problems

Servicing

fraction

for

the 2001 are stocked

INFORTI1ATI

for easy viewing

or rectified

Front Panel

100% amplitude modulation of the

generator,

as new test

time of a defective instrument can be

the time

of

switch. A lkHz squarewave

purchase,

protection

greatly

be

can

applications, is available

have

features to be factory

or

customer

features

procedures

previously

by relatively inexperienced technicians.

in

when displayed

for

the functional

modular

against

can

simplif ied by stocking

required and

Wavetek

ON

plotter

X-Y

circuits

plug-in

installed at a

obsolesence

be

simply

dictate.

service

con-

in-

and

can

cen-

1.2 SPECIFICATIONS

1-1. lists the specifications

Table

Signal Generator.

RF SPECIFICATIONS

Frequency Range

Operating

Modes

for MODEL 2001

Sweep/

TABLE 1.1.

SPECIFICATIONS

to 1400 MHz in three overlapping

1

Band

Band 2 450 Band 3 900

-

Start/Stop, lf,

1 to 500

and CW

to

950

MHz

'l

400 MHz

bands

1-1

GENERAL INFORMATION

Frequency

Calibration

Accuracy

Sweep

Accuracy

Display Linearity

Spurious Signals

Residual

Drift

Width

-

Dial

FM

-

TABLE 1

-1.

Specifications

MHz

10

Band 1 10

Band 2 Band 3

intervals

200 kHz

Band 1

2

Band Band 3

-

2o/o

Band 1 Band 2 Band 3

Less than

100 kHzl5 minutes

(after

112 hourwarm-up at a constant ambient,

a 5

minute

(Con't.)

MHz

2To of

*lected

2% of selected frequency

to 500

MHz-calibrated

MHz

110

frequency

t2OMHz

120 MHz

10 to 500

500 to 950 MHz, 26dB below 900 to 1400

lSkHz

stabilizing

MHz 26dB below output

MHz,26dB

MHz/8

2

-

period

hours

after a

in 10 MHz intervals

output

below

and allowing

frequency

change)

Blanking

RF

Flatness

lmpedance

REMOTE

A Rear

-

Output

Amplitude

at

-

PROGRAMMING

Panel

width and the

amplitude

Frequency

and

-

+10

dBm

REMOTE

0 to 20 dB vernier output

frequency

provides

Jack

modulation.

Retrace blanking

the RF

of

operation. Removed for CW operation.

Continuously

10 dB

increments.

curacv:

steps,

adjustable

plus

Step attenuator and

i0.5

t1

from

a 20 dB

dB to

dB to 1000 MHz

12 dB to 1400 MHz

jack

1

to 1400

1400

for

Remote Control of frequency, sweep

provides

also

programmed

(-16

volts corresponds to LOW

t0.5 dB over

detector)

t0.75 dB over 1

meter)

50 ohms

necessary

control. This

May

a i16 V signal.

connections

be remotely

to

vernier

MHz

(when

provided

-80

dBm; 70

attenuator

read with

EXTERNAL

for

output

+10 vernier, calibrated in 1 dB

500

MHz

connections

within the selected band by

frequency

sweep

dB in

negative

power

a

ac-

1-2

GENERAL

INFORMATION

+16

and

possible.

0-20 dB

40kHz

(Con't.)

volts to HIGH frequency

MHz/volt

by

remote

a

provided

programmed

(-18

volts corresponds to a maximum

Sensitivity:

control.

-18

With average voltage set to mid-range,

possible

is

rate.

(approx.)

potentiometer.

in

possible

Therefore,

volt

Panel

Rear

over a 20 dB range with

at rates

modulation

MHz/volt

16

vernier range must

range

is not exceedd

to 1kHz, 4O% modulation

band end)

(lnput

REMOTE

up to 4kHz.

connections as

and

jack)

rates

(approx.)

a

to

or

TABLE

Sweep Width

Vernier

Output

External

I

External

SWEEP

-

0-20

dB

-

FM

-

AM

-

SPECIFICATIONS

1-1. Specifications

band end

Tuning sensitivity: 16

May

be

controlled

output

May

0 to

ou tpu t)

Full

With reduced deviation and linearity,

100kHz

External

for

be restricted so the 0 to

distortion will occur.

100%

possible

connections

be remotely

-18

volt signal.

deviation of f250 MHz

are

AM signals are applied to same

vernier

modulation

to a

Modes

Sweep

Sweep time

Horizontal

EXTERNAL LEVELING

External

MARKER

Type

-

Accuracy

-

*

Output

Monitor

SPECIFICATIONS

-

(ALC)

Repetative sweep Single sweep External Manual sweep

Line lock sweep

Continuously variable

seconds, in

16

-

An external'-n-egativE-.rsignal, between 0,2 and 2

may be

Birdy by-pass markers with

marker modules.

Markers

(comb.)

0.005%

ly triggered sweep

from

less

peak-to-peak

volts

4-decade

used

steps,

(symmetrical

to level the R F output

plus

Front Panel

than 10

plus

vern ier

provisions

about

ms

ground)

for six

external marker input.

may be either single frequency or harmonic

type.

N{,8.

srAG-€

-$r"-

T0

C

c

(onuy

4rrT€u

(See

a^i

Lc-'A0

eriST.i)r

iiAI.JGE

ccl(s€

riu

l\1i{1-

Ej

Options

n,Aruus

iN

c

Vi,,ipA,*

Fot

_tH'pE0AhrcF

N

-T-HE

FrN€

s

r\4€

Oclt,

rAT:R.

r{

E

T,

A1

LF-,

ql

urf

RATE0

ATTEN

o*erNG.

)

fcsiTrex

r

ptFFFK€NT-

s

}

A2)

and

uA(Krl

AXPuT

crri.i'rI-e

=

AeLa{AcI,

to over 100

volts,

plug-in

rlkffeR

FTE

Q

,

DEPE

.

qA

TbR 5€TTI

(EAs4tF

A

Tr-\E

cF-

"i(J--"a

tl€t\icE

g

Nl0

Dct

g\EP

'kO ARE

\l

CT

Ne

T5*r.

GENERAL INFORMATION

External

Marker

Marker Tilt

Market lnput

Width

Size

Large

-

Small

-

Rectified Birdy

(for

use

-

with X-Y

-

plotters)

TABLE 1

-1.

Specifications

Front Panel for

conversion to a Birdy

into 50 ohms Adjustable from

Adjustable from

Adjustable

Size varies

(approx.)

ohm, or

from

(Con't.)

BNC

connector

(approx.)

(approx.l

(approx.)

from

with

detector's impedance. Adjustable from

V to 1 mV with detector impedance of 1

6

0.5V to 1

0 ohms. Rectified birdy is

Provides

mately

size horizontal

f

rom a horizontal

horizontal markers have a size equal to approxi-

1oo/o of horizontal display. Adjustment

vectorily adds

marker, causing

position

accepts

marker.

15 to 400 kHz

12 V to 15

50 mV

with

mV

positive polarity

the normal

the resu iting

toward a vertical

external CW signal

lnput

level: 100 mV

four

in

peak-to-peak

mV

to 100

detector impedance

peak-to-peak

uV

steps

meg

of

of marker

vertical marker to the

marker to vary

position.

POWER

Line Supplv

MECHANICAL

A B For total height, C

Weight

REOUIREMENTS

SPECIFICATIONS

For

total length, including knobs,

1 1/16 inch

add

including

add 5/8 inch For

total width, including screw

heads, add 3/16 inch

Net

-

Shipping

19

lbs.

25 lbs.

-

1.3 OPTIONS

1.3.1 Marker

A-1. Any single frequency

1.3.2 Marker A-2. Harmonic

1.3.3 Modulator

A-4.

Provides

(See

Figure 1-1.)

feet,

between

type at 1, 10 or 50

100% amplitude

modulation at a 1 kHz rate.

115 or 230

--]

^

T-

q,-L

-l--L

1

1400 MHz.

to

MHz.

T-

LB

(Other

VAC t1O%,50

TOP

SIDE

Figure 1-1

frequencies

available on special order.)

to 60 Hz,

.

(approx

20 watts)

1.3.4

1-4

Penlift

A-5.

Provides

contact closure during

sweep time.

1.4 ACCESSORIES

GENERAL

INFORMATION

1.4.1

1

.4.2

Accessories

Wide-band

a.

b. Service

Rack

c.

Rack Mount Kit

d.

furnished;

Available:

RF Detector

Kit

-

Mount

Kit

lnstruction manual and

Model D-152.

-

Containsa

K102.

K103.

Figure 2-1.

K104.

Figure 2-2.

Mounts one

plug

to mate

Mounts single instruments

with Rear

module extender

Panel

or two instruments

REMOTE

and extension cables.

in a 5-1

in a 7

jacks.

inch space. See

/4

inch space. See

1-5

sEcTroil

2

INSTATIAIIOil

MECHANICAL

2.1

lnspection

lnitial

2.'l

.1

After unpacking

parts

nal

etc. The

be saved

Damage

2.1 .2

the instrument,

for damage

shipping container

in case

Claims

lf the instrument

transit,

area

shipping

spection.

The

arrange

ment.

2.1.3

The

are

notify the carrier

representative

carton

representative,

local

for either

without waiting

Mounting

Rack

instrument

available.

is

The K-103

and

INSTALLATION

knobs,

to

necessary to

it is

is received

and

factory in lndiana.

the

or

packing

or

replacement

the

for damage claim

112 rack size

kit

packing

inspect

surface

material

visually

connectors,

and

reship

mechanically

either the

material

the

for

factory. will immediately

or repair of

two rack mounting

and

provides

damaged

nearest

the carrier's

your

settlements.

necessary

the

the exter-

areas.

should

the unit.

Wavetek

Retain

instru-

hard-

the

in-

kits

These

lnstru-

a7" x

mounting

Mount

operation

desired.

of a

the

19"

and

either the

ware to mount

standard

necessary hardware

may be

ments, ments,

package.

of

in

2.1 .4

A B C

Proced u re:

Remove

item

secure

5 114" x

two

or two

or a combination

instrument

K-1O3,

tem

I

(Side) (Side) (Screw)

the

A or B

with screws

for other

position

to

the unit

19" opening.

1000 or 2000 series

130 or

Facilities are

Rear

Mounting Kit

Rack

screws

against

NOTE:

side.

the

unit

to

The K-104

rack mount

to

140 series

of either.

provided for Front

Panel

CONTENTS

oty.

1 ea.

8

from one

the side

provided

to the

Wavetek. San

connectors.

ea.

side

panel

(item

A

ltems

side of

(Refer

right or left

provides

kit

two instruments.

Wavetek,

This

panel

of

C).

B may

&

lndiana

Diego lnstru-

provides

Panel

Figure 2-1)

to

Part No.

8000-608

c000-610

HS101-806

a time.

at

instrument

the

Repeat

be interchanged

the rack

F--

l|--

Figure

2-1.

K-103

Rack

Mounting

2-1

INSTALLATION

2.1

K-104 Rack Mounting Kit

.5

CONTENTS

Item

(Tray)

A

(Side)

B

(Screw)

C

Procedu

lnstall both

re:

sides

x 3116" screws

tray so that the

provided

are

for

and

instruments. Other

may also

feet.

When one or both instruments are

the

other

(item

NOTE:

a bale, it must be

rack

mounting

most

be

item

C).

lf

the Wavetek

for

Wavetek, San Diego 130, 140, and 700 series

mounted

"A"

kit.

otv.

2 2

12

(item

B) to one

(item

C).

feet

extend

all Wavetek,

instruments not exceeding 5%" x 8"

by drilling additional holes

and secure

instrument has been

removed before installing in the K104

(Refer

tray

Position

into the

lndiana

with

to Figure 2-2)

Part

No.

c000 729

A500-230

HS 101-903

(item

A)

using

10-32

the instrument on the

provided

1000 and 2000 series

properly

seated, install

holes.

for

Holes

their

the remaining screws

supplied

with

ELECTRICAL INSTALLATION

2.2

Primary

2.2.1

These instruments operate

VAC supply mains as selected by a

the Rear

that the fuse

responds to the

Power Requirements

Panel.

Before operating the instrument,

mounted

in the Rear

correct value

from

either 115

Slide Switch located on

Panel

for the selected

VAC

or 23O

Fuse Holder

voltage;

check

cor-

i.e.,

0.5 amp for a 115 VAC, and 0.25 amp for 230 VAC.

power

The

50 or 60

2-2

supply has been designed to operate from either

Hz supply mains,

however, the line operated

Figure

sweep rate function

lnstruments

at 115

Hz

operation.

2.2.2

The electrical

verified.

given

are shipped

VAC,60

Performance

performance

Performance

in

Section

5, Maintenance.

2-2. K-1O4 Rack Mounting

must be adjusted to

from

the

Hz

Checks

unless

specified tor

the line frequency.

factory

adjust to operate

23O

of this instrument should be

checks

for incoming

inspection are

VAC

or

50

'PERATTNG

dfi,J:llril

3-1

OPERATING

INSTRUCT

IONS

3.1

INTRODUCTION

This section

tion,

operating instructions,

provides

for the Model 2001

DESCRIPTION

3.2

enruo switch

@

srnnrlcENTER FREO.

@

sroetswEEPWrDTH

@

naooe

@

3-2

switch

complete functional

programming

and

Sweep/Signal Generator.

FRONT PANEL

OF

-

Figure

control descrip-

instructions

Selects desired band; 1

Controls Start Frequency when MODESwitch isset

Frequency

Controls trols

Selects Start/Stop,

3-1. Front Panel

ln

addition, special

overloading, low networks analyzers

(Refer

Sweep Width

to Figure 3-1 for control location)

to 500

when MODE Switch is set to

Frequency

Stop

when MODE

or continuous

af

MHz,

MODE

when

Switch is set to

operating notes

level measurements and operation with

X-Y

and

450

to 950 MHz

and C.W.

af

Switch is set to S/S

af.

wave

operation.

plotters.

to S/S

sweep rate

cover

900 to 1400

or

(Start/Stop)

errors,

MHz.

or Center

orcon-

unnreRs owtDTH

@

rstzE

Dual concentric

-

four steps;

control;

inner knob

knob adjusts

outer

controls marker

size.

OPERATI

width

marker

I NSTRUCT

NG

from

15 to

400

IONS

kHz in

rvnnrce ns

@

ILT/NoRM

O

unnreR

@

scoee

@

scoee

@

oruoo

@

-

switch

srzE Switch

HoRrZ. out

VERT. out

in

-

push

Six

isengraved

-

Provides

tion

button

vertical

provides

of the horizontal

NOTE:

a vertical

sk

-

This

50mV

peak-to-peak)

markers are for use

BNC connector

ground,

device.

-

BNC connector

DEMOD

input.

BNC connector

so RF markers

VE RT.

lncreasing

i rts.

three

peak-to-peak),

to

(An

UTPUT connector).

O

switches control

push

on

position.

position

button).

markers

horizontal markers

display,

the marker

feature is used

This

switch

small

rectified

and

with

provides

drive the

alternate

Horizontal

connection

provides

in is connected)

accepts the

be added.

may

in

when

X-Y recorders.

a

A1 and A2

NORM

the

having

MARKER SIZE

will

size

provides;

markers in its Center

positive

16 volt

large markers

markers

peak-to-peak

(x)

axis of

is available

the combined

for

connection

demodulated,

(The

combined

Marker Options

(down)

a

cause

to identify

position.

fixed

amplitude

is set to minimum.

horizontal marker

the

f requencies

in its Lower

position

its Up

in

triangle

the oscilloscope

the Rear

at

markers

and

to the oscilloscope

swept, signal

signal

(Marker

ln the

of approximately

on Steep

(50mV

position.

wave, symmetrical about

or other

Panel).

demodulated

the device

from

available

is

frequency

(up)

TILT

to tilt toward

position

100uV

to

These

indicating

RF

Vertical

under

at the SCOPE

posi-

10%

response

(12

V

volts

rectified

(when

(y)

axis

test

to

oureur-dBm-bo

@

@nrort-

nrnnrceR

@

rvroo

@

-

nr-c in

exrrrrur

eowen

in

-

Switch

-

ohm

-

Attenuator;

increments

iustment

BNC connector

BNCconnectoracceptsan

f requency marker

a

Push

BNC connector

when

tor

Closes the

NOTE: When

the

use,

tor.

Push

instrument

Outer

RF output

the

provides

switch

accepts

dBm to

on

for 44 option

from 0

of

button

EXT/INT switch

internal automatic

this switch

RF output is unleveled

A.C.

applies

button

is operating.

-70

dBm; inner

+10

from

a

connection

externallygenerated

the display.

an automatic

is in the

is in

power

EXT

leveling loop

the

and not controlled

the

to

providescalibrated

knob

adjustmentof

knob

-10

to

dBm

for RF output

continuouswave

(i

kHz square wave amplitude

(up)

control

position.

leveling

when in INT

position,

EXT

power

supply.

the RF output in 10

provides

dBm.

and

by

calibraied vernier

signal.

from

signal

external

no

the 20 dB vernier

light indicates

The

to

signal

modulation).

remote moni-

a

(down)

monitor

dB

ad-

produce

position.

is in

attenua-

the

that

3-3

OPERATI

NG INSTRUCTIONS

rnrclnECUR

@

sweee TIME

@

VAR/MANUAL

switch

sec.

Control

-

Selects recurring

in RECUR

TRIG/RECUR single sweep operation

This is

-

a six

UAL, LINE

vides

manual

MANUAL,

ranges.

(The

srueep

of the

time selected

(down)

positionSwitch/Control.

and variable

position

Switch is in

Four

or

Decade

frequency

sweep may be

and with

the center

by

momentarily

Ranges

sweeping

adjustment

triggered in

MODE

position,the

contacting

The

outer knob

of variable

when

SWEEP TIME

of sweep

the four

by

SWEEP TIME

Switch in either

sweep

may be

the

TRIG

provides

sweep time.

Sec.

time in

each of the four

decade ranges

Control

S/S or

triggered

(up)

selection

The inner

Switch is

only).

when

aF. When

for

position

MAN-

of

pro-

knob

set

decade

to

3.3 DESCRIPTION

swrrcn

@

rrrreur

@

o.

@

nervrore

@

scoee HoRtz.

@

3-4

i$/23ov

5o/6oHz

LrNE FUSE

Jack

-

Jack

oF

REAR PANEL

-

Figure

(Refer

Selects

prong

3

0.5A for

Provides

(See

level.

a mating

jack

BNC

nector

is in

Panel.

3-2.

Rear Panel

Figure

to

115 or 230

AC

115 V

connection for

'jumpered

provides

V line

plug provides

AC

or 0.25A for

paragraph

connection to

parallel

3-2lor

voltage.

connection

programming

for

3-6

plug"

which

with

the ScoPE

tocation)

230

detailed

provides

(X)

to AC

mains.

V

AC.

frequency,

of

instructions).

Front Panel

axis

of oscilloscope

HoRlz.

connector

sweep

This

control.

width and

jack

is

supplied with

plotter.

or

located

on the Front

RF output

This

con-

OPERATING

INSTRUCTIONS

@

oerrorus

eerrr

LrFT oPTroN

for

-

(A

b)

-

Provides

options.

When

sweep

TIME Selector

mounting

Pen

LiftOption

"ON"

holes

time. This option

set to the

is

tllt:l9,

J;t

"-/h)*-

ll I

\

BNC connectors

is installed,

100-10 SEC.

"to!o

.,1 l.-

these

operates

t-

2 terminals

position.

used

only

with special

provide

when the

modifications

contact closure

Panel

Front

or

during

SWEEP

3,4 TYPICAL

When initially

Panel AC LINE

the instrument

ensure

AC mains.

Make connections

test, and

under

hum,

Since

to a minimum,

kept

be

grounds

and

Use coaxial

RF OUTPUT

The

setting

the oscilloscope

RF leakage,

be maintained

cables

MATCHING

NETWORK

OPERATING

up

VOLTAGE Selector

is set

between

and spurious

SET-UP

instrument,

for operation

Model 2001. the

the

as shown

it is essential

throughout

with BNC connectors

is especially

cable

Figure 3-3.

first

with

and

the

Switch

in

pick-up

signal

good

that

the entire setup.

wherever

critical.

DEVICE

UNDER

TEST

Typical Operating

Rear

check

Fuse to

available

device

Figure

3-3.

must

connections

possible.

lt should

Set-up

a characteristic

have

as short

kept

be

impedance matching

to ensure

under

After

device under

nected to

lator

added

of

RF

Detector

network,

a constant

test.

RF signal

the

the DEMOD

is not a

externally.

demodulator

the

circuit

is recommended

as

device

the

of

as shown

test it must

part

of the device under

(See

tested. The

being

impedance

practical

under

in

amplitude

passes

through

oe demodulated

the

lN of

Figure 3-3) .

present

must

for 50-ohm

50 ohms,

of

(under

3

test

3-3, should

Figure

signal

input

the

Model 2001.

The input

the

Wavetek

should

and

the input

lf

feet)' is not 50-ohms,

be used

the device

to

RF circuit

before being con-

of the

lf a demodu-

test, one must

impedance

proper

Model D152

applications.

load

to

a

be

the

RF

35

OPERATING

I NSTRUCT

IONS

Depress the

button

(Note:

unless

tio ns.

)

After

for

trols put

amplitude, and

POWER

should

This instrument does not require a warmup

it is to be

completing

required

the

on, and adjust their size and

3.5 SPECIAL OPERATING

Errors From

3.5.1

When

sweeping

push-button.

The light in the switch

light, indicating an operating

at the extreme limits of its specifica-

used

the set-up, adjust the

frequency.

center

sweep rate. Turn the desired

width.

Effects

Rate

Sweep

RF

circuits

having rapid

Model

sweep

NOTES

amplitude changes.

condition.

period

2001

width,

markers

con-

out-

errors may occur, due mainly to detector delays. De-

creasing the detector output time constant

this effect.

Figure

illustrates sweep rate effect.

3-4

,+'

,*'

will

minimize

TRUE

RESPONSE

SLIGHT

DUE

RATE

SLIGHTLY

FAST

RESPONSE

LARGE ERROR

DUE

RATE FAR

WITH

ERROR

TO SWEEP

BEING

TOO

WITH

TO SWEEP

BEING

TOO FAST

the

output amplitude until a

ther increase of the output

the

conf iguration of the

tude. lf

flattening

to restore the

3.5.3

When

ground

cables

radiation

can sometimes be

ground

particularly

connection is made at the vertical input terminal,

tional

result in hum

3.5.4 Operation With

To operate

modifications might be required. the removal of the blanking signal during

the response envelope does

at the top, decrease

proper

configuration.

Making Measurements

making

for

measurements

loops become

cables

carrying

problem.

problems.

Ground loops

eliminated by completing only one

connection between each instrument.

to the

ground

properly

scope

at the horizontal input terminal

pick-up.

Network

with

response

is obtained.

amplitude should not

response

envelope except in ampli-

change, such as

the output

Low

At

just

Levels

at low levels, radiation and

Using double shielded

RF signals helps

causing

horizontal

certain

input.

Analyzers

network

Some

analyzers several

analyzers require

the sweep return

far

minimize the

hum

This applies

lf

the

an

will often

trace, This can be accomplished by disconnecting the

wire

connected

modification sometimes required is to

output ramp that

instead

complished pins

vides a horizontal output signal

1 1 volts.

2

of the

and

11

to

varies

standard

by

connecting a

of the

10

the M1H Module.

of

from

-8

to

zero

+8

to

volt

56 K ohm resistor

M1H Module.

from

Another

provide

some

horizontal

a

positive

ramp. Thiscan be

between

This connection

approximately

Fur-

change

enough

pick-up

ground

addi-

single

voltage

ac-

pro-

to

0

Figure

To

its lowest

closely observing the swept output response. Any

for sweep rate effect, first

check

practical

in the response indicates the sweep

true response. When a further reduction of sweep time does

not

3.5.2

The

change

the response, a true response has been

Effects From

excessive

use of

load the receiver

present,

is

not

tion of the device

trols to

3-6

minimum output amplitude. Gradually increase

3-4. Sweep Rate Effects

the

set

amount, then reduce sweep time while

rate

is too

Overloading

from the Model 2001

signal

its. To assure that th is condition

circu

and that the response is a true representa-

under test, turn the OUTPUT dbm con-

sweep

width to

change

fast for

obtained.

over-

can

3.5.5 Operation

With X-Y

Plotters

Two features are incorporated into the Model 2001 to

plotters. First,

facilitate operationwith

switch

that is

a

Switch. This marker

marker signals to a lower

a

with the operating speed of

is

Second

optional feature

an

a contact closure

plotter's

sweep time selector switch is set to its slowest

pen

lift.

X-Y

part

the Front

of

switch converts the hi-frequency

clamp

frequency which

during the

The A5

plotter

the

(A5).

sweep

feature

Panel

pen.

This feature

time to

operates only when the

to 1 00 sec.

3.5.6 Operation

Operation

with an external monitor can

With An

External

Monitor

produce

a marker

clamp

SIZE Selector

is compatable

provides

operate

position,

flatter

a

the

10

OPERATI

NG I NSTRUCTIONS

(less

amplitude

test than

monitor

desired, and

is

impedance

is to level at

fier, in order

the sweep

To operate

controls

put

from the external monitor

jack

labeled ALC

EXT

the

to

must be

the signal

to obtain the

output

Vernier leveled.

from the monitor on

OUTPUT

variation)

is obtainable

point

is located

is not

the device under

of

the output

increase the

to

generator.

with an

for

maximum,

lN and set

position.

of a negative

is larger

less than

Control until

(Refer

to

Figure

external

than 2 volts, use

'-

External

Figure

3-5.

input

with the

point

at the

affected

point

of

monitor,

+10

dBm.

The signal

polarity

2

volts

3-5.)

_,!r-

Monitor

signal to

internal monitor,

by cable

test.

a wide band

output

to the

the ALC

from the external monitor

beh/veen

signal.

an oscilloscope,

the monitor

the device under

since

where

greatest

VSWR or

flatness

Another application

power

capability

first set the OUTPUT

Next,

connect

Front

EXT/INT Switch

0.2 and

a resistive

While observing

Leveled

,,'

the out-

Panel

2

volts.

divider

adjust the

signal becomes

PorliollY

ampli-

y'FLeveled

---------'

Unleveled

Output

Signal

the

input

BNC

the

123

ooo

456

of

ooo

789

ooo

ll 12

10

ooo

lf

13 t4

ooo

Ponel

Reor Remote Jock

SIGNAL SOURCES

VOLTAGE

Pin 1

Pin Pin Pin

10 - Ramp

15

CONTROL

Pin Pin 7 Pin

Pin 12

AND

Ground

-

2

-+16volts

3--16volts

4--18volts

as

Same

-

INPUTS

6

Output

-

Sweep

-

Frequency

9

-

Sweep

-

for Driving

Level

Time

Width Control

Sweep Width

Except lnverted

10

Control

Trigger

Control

(AM

lnput

(FM

15

J lOl

Control

Modulation)

PROGRAMMING

3.6

Connections

TUDE,

AM and

circuit

connector.

shown

F REOUENCYand

FM MODULATION

provided

is

below.

for remote operation

SWEEP

and

Panel REMOTE

jack

programming

The

by

a Rear

of OUTPUT

WIDTH

triggering

its

and

plus

EXTERNAL

of the sweep

programming

functions are

AMPLI-

INTERNAL

Pins

5, 8 and

Output,

UN

Pins 1 3 and

Frequency and Sweep

USED

Y,t4

+ahy

CONTROL

1 1 are used

14 are unused

ca"t 6eryneL*&(

fl^ff

W

t

program

to

Width.

internal operation

W

b-b

s-g

,i-i{

p*

tt(

@

of

emnahd

3-7

"

11

OPERATI NG I NSTRUCT

IONS

3.6.1 OUTPUT AMPLITUDE

(AM

MODULATION)

Normal nected between shown below.

internal

2001

control is

pins

provided

5 and

REMOTE PLUG

*=\-l

a

*"I I

;IJ

FRONT PANEL

VERNIER

CONTROL(Oto2odB)

CONTROL

jumper

by a

wire

6 of the REMOTE

\-_

TO RFOUTPUT AMPLITUDE

OUTPUT

VOLTS

-18

-16

@

i.o

-rz

P

o

!r

-lo

J

(L

ft-e

U^

o

-b

F

d-+

con-

plug

provide

To

nect an external

RF

OUTPUT is a linear function

as

tage

external

shown in Figure

as

control, remove

OUTPUT Control

3-6.

EXTERNAL OUTPUT

.CONTROL

jumper

as shown below.

of the

rox

wire and

programming

con-

The

vol-

I

2001

REAR PANEL\

I

tr

\__

--lL

-,,"I

I

;;ll

TO

RFOUTPUT

FRONT PANEL VERNI

CoNTROL(Oro

ER

OUTPUT

AMPLITUDE

20dB)

provide

To

The

reactance

down

having a DC offset.

all

cases, the

must be within

Figure

quency

tion as shown

the DC

3-8

AM MODULATION,

frequency

low

of capacitor

to DC, can be

peak

the limits of

or distortion

3-6,

limits the maximum

in

Figure

level set to

connect as shown at

modulation will

C1. Lower frequency

provided

ln this

modulating

will

3-7.

-8

volts.

with

case, resistor R1

voltage

-18

occur. The

useable

graph

This

<-1 E

3o

o-

+?

o.t.2

Figure

be limited

a modulating

plus

+2

to

volts, as shown

percentage

was obtained

i!\

.J}+'r{

3-6.

.3

,-

pronrr,.n

right.

by the

modulation,

source

is omitted. ln

the

DC offset

modulation fre-

of

modula-

with

.4 .5

.6

orrrr/lr.o^

#lu-J./ n r

in

.7 .8

o rtpuof

20 V

lOO

Modulolion

At Moximun

Outgul

.9

l.o

+ro

P-to-P

lor

P€rcsnl

2001

REAR PANEL\

Exlernol

Percent

Modu lol ion

Control

<{

c

RI

loK

REMOTE PLUG

FRONT PANEL

VERNIER

OUTPUT

(

CONTRoL

-

AMPLITUDE

T

UIT

to

O

20d B)

roo

80

z

9

F J

B60

o

tr-

o

U40

F

z

td

o

r H20

IKHz

OPERATING

INSTRUCTIONS

FREOUENCY

3.6.2

Normal

jumper

REMOTE

,.ffi81,r.1

provide

To

connect

below.

REAR PANEL\

IOOHz

CONTROL

internal control

wire connected

plug

as shown

control,

an external

external

9 to

Figure

frequency

of

between

below.

FREQUENCY CONTROL

3-7.

pins

T PANEL

remove

Frequency control

REI\,IOTE

lKHz

Percentage

provided

is

and 8 of

9

jumper

the

PLUG

MODULATION

FREQUENCY

Modulation/Modulating

3.6.3 SWEEP

Normal

jumper

plug

REAR PANELT

provide

To

nect

page

on

as

by a

the

and

shown

tOKHz

WIDTH

internal control

wire between

as shown

200t

external control,

12 to an external

3-10.

Frequency

below.

/to

CONTROL

of

pins

(FM

width is

sweep

11 and

REMOTE PLUG

f-L--/

,t:-

,1

Y

I

TO

I

CONTROL

PANEL

FRONT

SWEEP WIDTH

CONTROL]

remove

Sweep Width control

Modulation)

12 0f the

WIDTH

SWEEP

CIRCUIT

jumper

the

IOO KH z

provided

REMOTE

and con-

as shown

by a

Tuning shown

;II II

---------+<-

-ro

sensitivity,

graphically

I I I

I'o*flJ

I I IFRoNT

I I rREourrucv

lcoNTRoL

I

which is approximatley 16

in

Figure

3-8.

I I

-conrRoLct

PANEL

'

TOFREQUET

MHz/volt, is

3-9

OPERATING

provide

To

set the

FM

Front Panel

INSTRUCTIONS

EXTERNAL

SWEEP WIDTH

CONTROL

f

FRONT PANEL SWEEP

WIDTH

CONTROL

modulation,

MODE

connect as shown

Switch for CW operation.

REMOTE PLUG

. r*.., *,0*

CONTROL

CIRCUIT

at right

and

TO

EXTERNAL

MODULATING

RCE

SOU

PERCENT MODULATION

I

coNTRoL

I

a+

rl

I I

=

,.f88lrrr-.

----]ro,',tE

FRONT PANEL

SWEEP WIDTH

CONTROL

The

modulating *.u. form should have

tial of

zero volts.

mately 16

The maximum

ing the 16 MHz/volt

4 kHz

at maximum deviation to 20 kHz for

(See

tion.

frequency

shaded area of

Figure

up to 200 kHz can be

Frequency

MHz/volt,

is shown

modulating

relationship,

frequency,

3-9.) With decreased frequency

Figure

3-9 on

REMOTE PLUG

V

,tr*.., *,0-,

|

CONTROL

sensitivity, which

graphically

varies

page

CIRCUIT

an average

while

still maintain-

from

approximately

used, as shown in the

1.

3-1

poten-

is approxi-

Figure

in

1 MHz devia-

3-8.

sensitivity,

U

a+4

J

9+z

L-z

E

o o

E

c

BAND

BAND 3

+t6

+14 +12

+to

+8

-lo

-t4

-16

]

2

+6

-a

-6

-8

o

.O .45O

.9OO

]oo r50

peak

The

voltage supplied

REMOTE amplitude band

200 250 300

700

il50

FREOUENCY

amplitude of the

plug)

should not

would

limits.

modulating signal

to the Frequency

exceed

program

the

450 500

950

I 400

unit

plus

Control

+

-16

or

volts.

to

sweep beyond

the DC

(pin

9 of

This

the

310

Figure 3-8. Program

Voltage

(pin

l2llFrequency

9 or

OPERATING

INSTRUCTIONS

250

4KHz

Mox. Mod.

req.

)

200

'150

N

T

2

loo

o

F

;

UJ

o

50

Mox. Mod. Freq

lKHz

MODULATION FREQUENCY

(Sine -Wove)

Figure

FM Modulation Frequency

3-9.

\

.

l0 KHz

Limits

Usoble

\

Decreosed

\ Sensitivitv-

I I

Areo With

Freq.

)

'lOOKHz

REMOTE TRIGGERING

3.6.4

The SweepTime Circuit

ing a 10 volt

proper

For

Selector must be set

positive pulse

operation, the

OF SWEEP TIME CI RCUIT

be remotely

can

to

Front Panel

for

one of the four

triggered by apply-

7 of the REMOTE

SWEEP TIME

variable sweep

plug.

positions,

time

position.

TRIG

should be slower

Panel

Front

Control.

SWEEP

the TRIG/RECUR Switch set to the

and

The repetition

than the frequency running rate set by the

rate

TIME Selector and

the external trigger

of

VAR/MANUAL

3-11

SECTION

4

CIRCUIT

DESCRIPI

r0N

4-1

CIRCUIT DESCRIPTION

I

a

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CIRCUIT DESCRIPTION

MECHANICAL

4.1

Before

well to consider

cuit

thereby,

TOP

beginninE

the mechanical

enable

will

This

ment.

description

strument. ferring

rear chassis

4.2

The

module module

The

of

modules.

to

VIEW

SIMPLIFIED

block

information.

are

Power

-18,

+18,

M1A

The

horizontal voltages.

scope

M2H module

The

reference

sweep ramp

Thetwo

provide

the signals

width controls.

the sweep

to

are combined

determined varactor

Necessary level

provided

RF signal

The

M9H module

the

are combined

tors

difference signal,

then to the

variable

The output

module

RF outputcircuit.

the

to

providing

mechanical

The

Figure

shows

Power

diagram

indicated

Supply

and

module

supply,

reference

The signal

drive circuit

into a

shifting,

by the

for BAND

M 10H module.

attenuator

from this

a

where

ARRANGEMENT

description,

the actual

be associated

a better

5-17 in the

Supply

in

provides

-20

generates

contains a

supplies

to the

single signal,

sweep drive

where

circuit

arrangement

foilowing

the

block diagram

with

understanding

arrangement

Maintenance

the

plug'in

Panel,

Front

sections.

BLCICK

Figure 4-1 contains

The

by

volts

DIAGRAM

blocks contained

the red module

regulated

three

for corrnections

the sweep

four distinct circuits;

+16

and the sweep

ref

volt

erence

and the two

Panel

F

ront

drive circuits.

from these

M2H

in the

wh ich drives

diodes in the sweep

shaping and

circuit.

(1

1

to 500

the signal

from two sweep

physical

its

of

can

outline.

ramp, blanking

supply,

sweep

f requency

controls

module,

oscillator

amplitude control

MHz)

in a diode mixer.

pre-amplifier

fed to a 1-500

is

This module

and the

amplifier

PIN diode switch completes

MHz

final 1-500

is then

fed to the

contains

would

it

the instru-

of

and

position,

the overall

be seen

section.

moduie

both

voltage

to

is

by

This

and

block

each

within

sources

plug-in

the

-16

a

inverted

an

ramp voltages

and sweep

is then

they

where

frequency

the

modules.

generated

oscilla-

The resultant,

a voltage

MHz amplifier.

Mi9H

the circuit

be

cir-

in-

re-

the

and

volt

fed

and

is

in

to

between the

error amplifier

then connected

is

input of

system

monitor

in the

also order

resistor

and

The sweep

M19H

through

output

2 & 3

The

module

ln

module,

sweep

output

tude sweep

which is

output

also standardizes

instruments, stalled

This constant the individual

mixer

different signal,

located

final 1 to 500

the

maintains

point,

sweep oscillator.

creates

a zero

to create

is connected

RF output

the

oscillators

module.

voltage

circuit

is accomplished

marker circuit

M5H, and the

addition

to

it also

sample

was

signal

sample

extremely

from the harmonic

which

markers.

M6 marker

with a crystal

to the marker

plified,

signal

Front

the

and

is then

Panel

shaped

two voltages

the M10H module.

in

voltage variable

to the

a constant

which compensates

impedance

a 50 ohm

between

system.

for bands

RF output

The

variable

is amplified

MHz amplifier.

amplitude

for amplitude

mixer,

and amplifier

at the

source

impedance,

the zero

2 & 3

from the

attenuators

without amplification.

in the same

is

comprised

individual

the marker

provides

in the same

signal

leveled.

signal

important

the sweep

insures

amplitude

which is the

adder

sweep

modules

controlled

module

into a

fed through

vertical output

for selection

to the

marker

adding

manner

provides

This

individual

to obtain

generating

sample

proper

sample

where

CW signal.

birdy marker,

they are combined,

where

single composite

the

marker

connector.

in the leveler

error voltage

The

attenuator

This

closed

RF signal

variation

circuit

monitor

point.

a 50

impedance

are located

oscillators

directly

Leveling

manner

of

function of

and

marker modules.

amplitude

operation

signal

to the

for bands

for

as

the marker

generators

the

leveling of

as the main

a constant

marker

"flat

a

in all

of field in-

is then

it is combined

The

is then

signal.

control

size

the

at

loop

at the

and

ohm

point

in the

fed

is

RF

band

adder

M6's.

MsH

the

RF

ampli-

modules

comb"

2001

fed to

in a

resultant

fed

back

am-

This

and to

ln

1.

lt

l

Leveling of diode

reference voltage

the RF output

which measures

the

supply by

is accomplished

RF

voltage

the vernier output

and compares

by a monitor

it to a

control.

Any

4-3

CIRCUIT DESCRIPTION

following

The

schematics appearing in

POWER

4.3

PS6

The

an optional

POWER

AC

A dual-primary

tage

of 115 or 230

wire receptacle

circuit descriptions are referenced

Section 6.

(PS6)

provides

circuit.

power

"pen-lift"

&

SUPPLY

supply

RECTIFIER

transformer

volts. AC

from the Front

The transformer is located

module to reduce

regulated

wave

plug.

to three

-18,

signal for

lift

PEN lnstallation

closure which occurs during

normally

of the 12

the relay

plus

rectifier

mounted

unregulated

-20V.

and

connection

switching

LIFT

OPTION

of K50 and

conducting

pin plug. is energized by the turn-on

early failure

gized

during slow

of the front

panel

magnetically coupled

and minus

circuits

to the

This

voltages

f

and

iltered

printed

voltages as well

plug

also accepts a scope horizontal

to a Rear

circu it is also

Rear

from

current supplied

When the base

the relay

of

sweep speeds and in the manual

sweep rate selector.

contacts,

three regulated

CIRCUITS

allows operation

power

is

supplied through

Panel

ON/OFF switch.

from

away

the

line ripple.

are supplied

by C1 and

circuit board,

Panel

enabled

jacks

Panel

provides

as the regulated

connector.

through this

provides

the sweep on-time.

through

drive to 011 is removed,

of 412. To

the relay is only ener-

to the

voltages and

at a line

sweep drive

by two full

C7. A 12

access

The

plug.

a contact

O11

prevent

position

vol-

a 4

Un-

+18

pen-

-20

VOLT

SERiES

The reference

differential

with

similar to the

CR 17

provided

is

through

tage

conduction of CR13

vo I ts.

provides

08

provides

by shutting

CR

1

to the base

4.4 SWEEP RATE

M1H

SWEEP RATE

This

module

waveform. Front Panel

gered,

or manual

peak-to-peak

volt

1Oms

to i00

constant at the fastest angular waveform

is

9

the scope

The square wave

volt level

level

used

time.

horizontal

corresponcis to

corresponds to the retrace

provide

to

REGULATOR

voltage for

amplifier.

09 and

a compound

pass

element

reverse

voltage

down

4

to the base

of 09. This

if the

(MODULE

GENERATOR

generates

a variable rate

modes. The

signal with

seconds in four

sweep time

is

used to

signals.

output is

blanking

-20V

the

supply

Q10, which in

emitter following

-'l

of the

8V supply.

protection.

-18

of the

of 05, reducing

action is helped

-20

volt supply drops

MlH)

square

switching

a

the sweep time

of the RF

provides

triangular waveform

a sweep time

steps. Retrace

of each range.

provide

-1

to

the sweep

+15

time.

output

is applied

conjuncrion

action

Current

volt supply

the reference

recurring,

limiting

by 07

along

by the

below

and triangular

is

a 32

variable from

time

is held

The

drive and

volt

and whose 15

The square wave

signal

whose

during retrace

to a

vol-

-18

trig-

tri-

-1

volt

is

+18

VOLT

Regulation nal reference supply. R9

volts. An external

capability,

istics of lCi

+18

The CR7.

18 VOLT

The +18

back which is

ing

volt supply

voltage

volt supply through R20,

05 to maintain

03 and Q4

nected as across R13 is

of 05 is

05,

and CR

4-4

provided

when

10.

ES

SERI

is

and Q1 improves the

SERIES

REGULATOR

provided

pass

providing

by

protected

is

SHUNT REGULATOR

reference

applied to

for this

a shunt

provide

a compound emitter follower

the series

not loaded heavily.

by

CR8. Current limiting

06

conducts sufficiently to

Reverse

voltage

by lC1 which

provides

transistor, 02, boosts

contains

an adjustment

current limiting

amplif ication before

against reverse

supply is obtained from

provides

R19

and

lC2 which

provides

regulated

pass

element

voltage

so that the voltage

Short circuit

forward

protection

provided

is

its own inter-

+18.00

to

the

current

character-

limiting.

voltage by

the feed-

gain

high

forc-

across R13.

and are con-

protection

provided

is

bias CR9

by CR 12.

the

by

Triangular

03, to the integrator

output

switch is switched, reversing input, another threshold. lf ring

producing

output is

blanking

The

switch

TIME

waveforms are

and 04,bV applying

input. When

exceeds a threshold

causing the triangular waveform

mode. the negative ramp

continuous

clipped on the negative

(pin

10)

.

symmetrical square wave

(pin

9) isconnected,

vernier and one of the range

generated

positive

the module is

oscillations. The

the SWEEP TIME selector

(pin

7). Since the integrator

portional

nier

switch

to the input

provides

output

voltage level, the

a sweep time increase by reducing the

polarity

if

the

in an integrator,

and negative

the integrator

voltage, a bi-stable

polarity

the

to

programmed

will trip the

polarity

output

through

the Front Panel

determining resistors

voltage levels

positive

hysteresis

of the

integrator dc

start down toward

in

hysteresis switch

hysteresis

and is

from

the hysteresis

switch, to the integrator

output voltage

is negative. lf

change

SWEEP

the

TIME

hysteresis

polarity

Q1

,

ramp

a recur-

switch

used

SWEEP

input

pro-

is

ver-

Q2,

for

of

is

CIRCUIT

DESCRIPTION

positive,

ground

time.

For

switch nected

position.

until

parator.

less a trigger is applied to the

cannot

reached because the triggers must

which is

du cts.

Triggers

(pin

to open

tage at the way

Since the integrator

(pin

full output is retained

connection)

triggered modes, the negative

is shifted out of the

through O14 or through S102D. when in

The integrator will now

producing

it is stopped by a clamp circuit turned on by a com-

The inteErator output

flip the hysteresis switch until this clamp level is

gated

off

until

prevented

are

6) by a voltage at

FET

switch O14.

1

is to shift

to allow

7) and output

from reaching the hysteresis switch pin

the

free-running

is an inverting amplifier,

(pin

8) are available, a

network allows the SWEEP

a dc

as

level shifter in

amplifier consisting of

provide

sweep drive. This output is divided by R18

vide a horizontal drive of about

impedance of about 23K ohms.

A centering adjustment

of pin

a 32 volt

the integrator and horizontal outputs

11) by shifting both

the

06,

peak-to-peak

(R41

positive

the hysteresis switch. A size adjustment

amplitude adjustment

hysteresis window. Symmetry of trace and retrace time

(for

grator) control

centering

rotation of

The gram

listed below:

Section A

Section B

Section

Section D

positive

equal

is established by adjusting the integrator balance

R7. This

and the sweep

the

four

sections

M1A

the

C

by effectively

and negative

adjustment

SWEEP

module.

TIME

of the

SWEEP

The functions

I

ntegrator input selector

Clamp level shift

d i scon nect

Trigger source selector

Line trigger routing,

(a

diode

nearly constant retrace

a

threshold of the hysteresis

way by a diode and resistor con-

opens

the

vernier

"line"

continue

is now held

hysteresis

pass

the clamp comparator

1, which

primary

The

clamp comparator

oscillations.

TIME

vernier,

manual mode.

07 and

wave

output

16

provides

)

and negative thresholds of

input

also affects

period

for

vernier.

TIME

its negative ramp

this level

at

switch.

through an amplif ier

A trigger

(O9)

causes comparator 08

function

feedback resistor R102, to be

input

and

the

of

outof

both input

A non-inverting

and

8,

gain

a

is used

R53 to

12, and

provides

mode

019, with

which

peak-to-peak

volts

a dc level adjustment

(pin

(R45)

varying the size of

voltages to the inte-

the manual

fully counterclockwise

selector

switch

of each section are

routing

and

switch

hysteresis

un-

con-

vol-

used

ut

for

pro-

at an

an

the

pro-

switch hold.

Circuit

be

RATE,

MANUAL Section

output

converting shifts the amplif ier output voltage to R 104. When the

Section

disconnected

operation as modif

understood by considering

positions

LINE

and

POSITION

A. A feedback resistor R113 is

(pin

8) to input

it to an inverting

R'l 02 is

is suff icient

fully

clockwise,

to

if t the ou tput voltage to

sh

B. The clamp

ing

+18V

i,

to

causing

from any internal source of triggers

ing the routing switch

shift bias is

Section

applying

This causes the output

positive

a

to R102 and

2,

VAR IAB LE RATE

Section A.

decade

Section

unless

vo I ts.

Section C. Two trigger sources are

external trigger

from the

Section D. four

LINE

Section A. The

by-passing the

sweep

Section B. of the

Section C. The line rate square wave

is

connected

disconnected when O14 is open.

C. The

D. The

-18

feedback

trigger input

hysteresis switch is

volts to its input

preventing

POSITIONS

Proper

integrator input resistors

increments in these

The

B.

the

clamp

"pull

trigger" switch is

from REMOTE

Panel

Front

No

connection is made to

positions.

variable

rate

POSITION

proper

SWEEP

retrace

and

Clamping, works in this

"pull

trig" switch.

to the trigger input.

ied by the

switch

the MANUAL, VARIABLE

one at a time.

connected

(pin

7) of the integrating amplifier.

dc

dc level to

SWEEP TIME vernier control

the negative input voltage to

is disabled in this

the hysteresis switch input to be

(since

014

ier. Resistor R 114

amplif

-8

volts

position

OB is turned off). The

point pin

held in one state by

through a 33K ohm

to be negative

ier)

amplif

(this

providing

bistable circuit

the

blanking of the

positions,

is disabled

R105 R108.

and triggers are held off

opened,

connected

jack

J101-7 and triggers

momentary TRIG

integrating resistor is selected,

value

TIME vernier, to

periods.

position

from

the

positions

for

zero input

+8

volts

by apply"

by

open-

grounded.

4

is

resistor.

polarity

proper

RF

output.

are selected in

removing

to

switch S103.

in

6

any of the

produce

independerrtly

power

supply

may

from

R

104

dc.

+18

4;

equal

is

an

4-5