Tektronix 492a, 492b schematic

Section

5

Adjustment

Procedure

Adjustment

f ntroductio

n

Procedure

lf

instrument

the

pafiicular
appropriate

performance
repeating

Allow

temperature

illustrations in

construed as
Adjustment

circuit or steps.

STATIC
COMPANENTS USED

Many
static
immediately

characteristics. Devices
JFETS,
damaged
reliability will
reduced

characteristic,

that
instrument

the

DISCHARGE

semiconductor components,

discharge.

and

by

performance

adjustment

specification.

part

of +20o C

the

being representative

steps thal

apparent. lt

high impedance

parts

have

obseruing

the Performance

of

warm

to

to +30" C before

adjustment

interact

CAN

IN THIS INSTRUMENT.

Damage may

may

operate

been severely

the

is nol within

determine

procedure

After

DAMAGE

usually appears as a degradation

that are

following

the cause, repair
to return

any adjustrnent, verify

for

up

at least

procedure

of

flagged

are

especially

nat

be catastrophic and,

particularly

operational amplifiers

within

accepted

impaired.

specified

the instrument

Check.

one hour,

making

may

specilication

MANY

precautions.

any adjustrnents. Waveform

be

and references

SEMICONDUCTOR

MOS

susceptible

limits

Damage

requirements for

if necessary,

performance

in

an ambient

idealized

tolerances.

types,

therefore, not

are: MOS,

(FET

input

over a

can

a

then use

operation

and should

made

can

be

of

the

stages). The

short

be significantly

to

by

not

to the affected

damaged

semiconductor

CMOS,

period,

but

the

be

by

their

492AlP

& 4gzBlP Service,

1 .

Handle
free
work

wrist

2. All
to eafih

Minimize

3.
until
from

4. Hold

Use containers

5.
material for
containers.
returned
one

Vol. 1 5-1

static-sensitive

surface.

plane

strap.

test equipment,

ready

their circuil
the

with

Work

such

as

The

work

ground.

handling

lor

lC

devices

storage
Tektronix,

to
anti-static

by

use.

boards.

made

Any

static sensitive

packaging

station

conductive

accessories,

Minimize

by

and transportation. Avoid

cornponents

areas should contain a

plane

should be connected

keeping

their body

of conductive

Inc.,

the

the

should be

material.

circuit

or

polyethylene

and soldering

components in

removal

rather

material

part

or assembly

packaged

assemblies

sheeting

tools

installation

and

than the

f

illed with

or

using ordinary

in its

at or

static-free

and

to

their

terminals.

(circuit

ground.

earth

should

original

of

conductive

board) that

original

on a static-

bench cover or

grounding

a

be connected'

containers

semiconductors

plastic

is

to be

container

or

Adjustment

Equipment

Procedu re

Required

Table

5-1 lists
adjustment
listed in

adiustment
for

the

checks. Substitute

some test equipment and test fixtures

procedure.

Table 4-1 in

procedure.

characteristics.

Test

Section

4, Performance

The

characteristics

equipment

equipment

listed

must

in

Table

Check,

specified

meet

are
are

or exceed

recommended

5-1

together

required

minimum

the

for

for

with

the

these

the

those

required

Equipment

Return

Loss Bridge

Attenuator

(3

dB

or

miniature)

Autotransformer

Digital

DC
Adapter
Adapter
Three

female
Adapter
Adapter

Cable
Coaxial

Multimeter

Block

(SMB
(BNC

Extension

to

SMB male)
(BNC
(BNC

(20"),

Tip

Cable

male

female

Cables

to SMB)
female

Plugs

(8")

50 O Tenninator
Screwdriver,
Alignment
Screwdriver, Flat,
Screwdriver,
Alfen

Wrenches

Tuning

Tool

6"

Phillips

(3),

7164"
Service

(Extender

Kit

Test Flxture

male)

to

to SMB

mate)

(SMB

to SMA

to

male)

BNC

with 1/8" Tip

No.

1

3132",5164"

Boards)

"

Table

10 MHz

Capable

Vac

90

pV

10

to

Equlpment Required.

5-1:

Characterlstlcs

to 1 GHz. 50

varying line voltage

of

130 Vac

to

Vdc

350

C)

from

Flecommendation

Wiltron VSWR

Weinchel
No.

015-1053-00

General Radio
TEKTRONIX

Tektronix
Tektronix
Tektronix
Tektronix

Tektronix
Tektronix

Tektronix

Tektronix
Tektronix Part
Tektronix
Tektronix

Tektronix

Bridge

Model

4M,

Variac

DM

5O1A

Part

No.

Part

No.

Part

No. 103.0180-00

Part

No. 175-2902-00

Part

No.

Part

No.

Part

No.

Part

No.
No.

Part

No.

Part

No.

Part

No.

and

Use

Model

OZN50

Tektronix Part

Type

W10MTo

DM

or

5O2A
015-0221-00
103-0098-00

175-2412-00

015-1018-00

175-1178-00

012-0208-00
011-0049-01
003-0675-00
003-0908-00

672-0865-01

a

This

5-2

kit is

psrt

of

the

Servlce

Klt 006-3286-01, llsted in tha

f,tatntenance Seolon.

492AlP

&

492BlP

Service, Vol. 1

P reparatio

n

plepare

To
the

Options

rackmount model for

the

section of this

manual

adjustment,

(Section

8).

Adjustment

refer

to

the

Procedure

Rackrnount

part

of

Remove

1

.

Set the

2.

Loosen
Pull

3.

4. Place
Some circuit boards

gain

to
power

1. Adjust

R6028

This

high-efficiency

kHz. The frequency

66
oscillator components;

procedure.
assembly.

the cabinet

instrument

lour

the

the cover up

instrument

the

access

olf

to some test

before

removing

Low Voltage

and R6061

Parl2

on

screws through

and

or assemblies must

on the

power

adjustment is normally required

therefore, Part

of this step should

follows:

as

face

its

otf.

on the bench

points

the assembly.

front

or

the

or adjustments.

Power

Power

supply

Supply

uses an

1 is

only

panel.

back

reconnect

and

removed

be

Supply

board.

internal
the

required

be

rubber

and

When

oscillator

normal

feet.

power

the

placed

this

only after

adjustment

after repair

cord.

on extenders

is

done, turn

with

a

and

the

frequency

replacing

check

of the

of

Since

the Spectrum

primary

transformer, with
used between
receptacle.

The

ground
suitable transformer.

ground
the

lf
bench,

power
and C6111.

potential
Pan

a.

ground patential

transformer must

through
side

to chassis

input

filter

power

the

Connect
power

the Z-Axis

supply

hazardous

is

disconnected.

A relaxation

exceeds

-

1

Check and

a

input

Analyzer

a turns

power

the

input

the

FL301) .

is

potentials

80

voltage-variable

and set

and

Sweep

WARNING

uses

different

ratio

of

source

have

a three-wire input

and output. Stancor

jumper

A

ground

separated

exisf within

This

is

oscillator

V.

Adiust

the transformerfor 117 Yac. Remove

boards.

high

a

from

1:1

and

should

(emitter

from

due to the

ligltts D55112

Low

transformer

efficiency

cfiassrs or

and a 500

the

Spectrum

also be

of Q2061 and

instrument

the

the supply for

slow

voltages.

in line with

power

ground,

earth

minimum

VA

Analyzer

and output

G1521000
connected

the

and operated

several secands

discharge

(nextto

the

connector
is

between

ground

of capacitars C6101

Spectrum

supply,

rating,

an exampte

C6111)

with

isolation

an

should

power

input

with

the

terminal of

on the

when

Analyzer

the coverover

the

be

a

of

primary

after
the

492AlP

& 492BlP Service,

Vol. 1

5-3

Adjustment

Procedure

Table

Supply

+9V

-5V

-7V

-15

V

+5V

+17 V

+100

V

+300 V

Monitorthe

b.

voltmeter (DVM).
Remove

c.

OUTPUT

to the
Adjust

d.

narrow-bit
this step.

5-2:

+15

R6028 for

Power

the

jack

Supply

point

v

+15

test

Power

V

screwdriver

Supply

the

rear

on

supply adjustment,

V

+15

on the voltmeter.

through

Tolerances.

Tolerance

+8.92

V

lo

-4.96

V

to

-7

-14.84
+4'.73 V

+16.81

+95
+280

on

-€.5

V

to

V

V

V

to +105 V

V

to +310 V

Z-Axis

the

to

to +5.23

to

;

cover

screw

panel

(see

Figure

R6028.

the

screw

+10.1

V

-5.05

V

V

-1

5. 1 6 V
V

+18.6

board

located

5-1A).

R6028

hole

that

V

(Figure

berow

This

is

accessed

was

with

5-18)

the 1

0
provide

will

MHz lF

by

removed

a

access

inserting

part

in

c bt

a

vary

e.

t.

the input voltage

supply
Check

remains

the other

against tolerances listed

g.

Remove
Analyzer

Part 2
a. Remove

section,

the voltage-variable

to the

-

Adiustlng

Power

the

remove

then

P3045.
Plug

b.

suitable_p_oryel

the

c. Use

two on/off

d.

Connect

power

the

LINE

SELECTOR

plastic

a

power

test

a

gource

or

oscilloscope
and sweep rate
of the

output

wavelorm,

from

regulated,

supply

and input

voltages

in Table

power

source.

Power

Supply

Power

the

into

cord

the

(1

15 Vac

SwlTCFl).

insulated

switches

of 10

tuning

(S300)

ps/divto

of the oscillator

vac

90

to 1

82

power

at the test

5-2.

transformer

Supply

module

and

Osclllator

as described

Supply module

power

input

receptacle

or 230

Vac,

tool or equivalent,

to close

probe,

with

TP6053

a deflection

(Figure

U6059,

vac.

check

does not
points

indicated

connect

Frequency

in

cover

depending

to

these

switches

5-1A).

is

approximately

that

the +'t 5 V

exceed 210

the

Spectrum

in

Figure

w.

the Maintenance

and

disconnect

and

connect

on the

insert

(Figure

sensitivity of 5

Note

it

to

position

between the

5-1A).

V/div

the amptitude

10

V.

5-18,

a

of

5-4

Adjust

e.

Reconnect

t.

module

R6061

(Oscillator

P3045,

replace

on the Spectrum

Freq Adj)

Power

the

Analyzer.

492AlP &

waveform

for

a

Supply module

period

492BlP

ps

15

of

cover, and

Service,

(66

kHz).

install

Vol.

the

1

F1013
F1017
F201

3

F1

035

Adjustment Procedure

F1 033

s300

R6028
accessible

(+15

V adJust)

through

R1062

is

screw

hole

TP1
Ground

H6061

03 4

TP1035

TP6053

TP1 044

TP1036

-5V

TP1046+

A. Low-voltage
adjustments

*,u Ur,

1047

17V

Q4058

B.

Z-Axls

and

TP1

048

+100

circuit

power

test

V

board

supply

points.

Power

Statu s

Q4059

test

polnts,

492AlP

& 4928/P

Figure

Servlce,

5-1: Low

Vo

l. 1

voltage

power

supply

adiustments.

5-5

Adjustment

Procedure

Sweep

R1

Accuracy

062

Dot

Positlon

R1052

Flgure

Trace

Rotation

Rl

5-2:

Intensity

R1

021

Z.AXIS

cRT

dlsplay adjustment

2.

Adjust

R1021

R3033

and

Geometry

030

Power

Status

Z-Axis

R1027,

,

on the

Rl 051

BRD

LED

R1030,

High

Astigmatlsm

R1058

Trim

R106s

and

and

High

R1051

Voltage

CRT

R2040

test

Voltage

and

,

board.

Bias

Focus

Vertical

potnt

R1OsB

on the Z-Axis

R3033

Horlzontal
R1055

Gain

locations.

Circuits

Gain

R1066

board; R2040

a.

Switch

POWER

INTENSITY
TIME/DIV
MANUAL

b. Remove

the

Limit R1027,

Bias

CRT

c.

d.

Switch
Velical

VIEW
Adjust

1)

POWER

Display mode

B.

CRT Bias

Using a

voltage

2l rurn

the INTENSITY

screen.
Focus

3)
for

5-3)

4l

set

the

noted in

off and

SCAN

epver

over

on

R2040,

Z-Axis

the

on the

on

and,

follows:

as

voltmeter

of

Q4058

the dot

by

adjusting

the smallest
INTENSITY

part

d,

subpart 1.

preset

following

the

Fully
MNL
Midrange

the Z-Axis

board

High

after

to 2

dB/DlV.

in

the 20 V range,

or

Q4059 on

clockwise

and Sweep

(Figure

Voltage

po_wer-up

lhe

Deactivate

the Z-Axis

untir

R3033

round

dot.

for

a collector

Spectrum

Analyzer

Counterctockwise

5-2)

board

state

boards.

fully

(Figure

Set the

counterclockwise,

5-B)

has

stabilized,

READour,

measure

a

cRT

on

the High

voltage

5.5

board

beam dot

record

and

(see

Voltage

v

higher

controls:

Intensity

lully

clockwise.

change the

vlEW

A,

the collector

Figure

s-18).

appears on

(Figure

board

than

the

and

ari'd

voltage

5-6

492AlP

& 492BlP

ServicE,

Vol.

1

Adlustment Procedure

Flgure

5)

6)

7)

Adjust

e.

Adjustment

5-3:

m odu le.

use
counterclockwise
beam

with

Turn
dot

(Figure
and sharpest

Turn

non-metallic

the

until

just

dot

the

extinguishes

adjustment

the INTENSITY

with

the Focus

for

5-2)

adjustment,

round

a

dot.

the INTENSITY

and again measure

should
less,

repeat

the

CRT

egualor

lhe

cathode

exceed
procedure

and

screwdriver

the

fully

counterclockwise,

clockwise

point

test

to

adjust

CRT beam is

(with

screen

until

a dot is

R3033.

dot; then

refocus

counterclockwise

the

collector voltage

part

set

for

setting

as

in

CRT

follows:

that

current

tocations

cRT Bias,

visible,

then

shaded). lf

will

this

visible:

Adjust

Astigmatism

with R3033

until

the

dot

at

Q4058 or

d, subpan

bias.

Hlgh

on

R2040,

clockwise

no

dot

appears,

be

the

bias setting.

then defocus

Fl105B

for

the

smallest

just

disappears,

Q4059.'Voltage

A.

lf

voltage

the

vottage

until the

the

is-

492AlP

&

492glP

Sarvice,

Vot.

2)

Connect
lug

on the CRT

3)

Switch
2

dB/DlV

4l

Adlglt

TP4028.

at

5)

Switch
board. Turn

1

voltmeter

the

shield.

POWER

and

switch

Intensity

Limit

POWER

POWER

back

Digital

off

and

between

After

on.

Storage

R1027

(Figure

reinstall

on

and

TP4028 (Figure

the instrument

off.

5-2) for a voltage

jumper

the

adjust

INTENSIW

the

5-3)

initializes,

P4036

on the High Vottage

lor normal

and the

activate

reading

ground

V

of 0.9

viewing.

5-7

Adjustment

Procedure

f .

Appfy
controls as

the CAL

follows:

OUT

signal

to the

RF INPUT

and set

Spectrum

lhe

Analyzer

'\

FREQUENCY
FREQUENCY

AUTO

REF LEVEL
MIN RF ATTEN O dB

VERTICAL

NARROW VIDEO
VIEW
TIMSDIV
TRIGGERING FREE RUN

g.

Activate ZERO
approximately
5-2) so

Activate VIEW

h.

positioned
adjust
bottom of the screen.

i.

Change the

Vertical

the
just

visible.

j.

Adjust Delta
characters

visible

iust
setting

INPUT.

RESOLN

A/B

the

trace

at the top then bottom of the screen,

Geometry

REF LEVEL

Display mode

is

after the

photograph purposes.

for

1OO MHZ

SPAN/DIV

DISPLAY

FILTER

SPAN and

mid-screen; then adjust

is

aligned

A

and
R1051

Intensity R1030

slightly

trace

adjust

with

VIEW

(Figure

position

to

of 2 dBlDlV.

higher than the trace. Fleadout

has disappeared. This ratio

10
ON

-20
2

ON
Off
AUTO

REFERENCE

graticule

the

B,

then

5-2) for the

(Figure

Disconnect

MHz

dBm

dB/DIV

LEVEL

Trace Rotation

the

lines.

PEAK/AVERAGE

the

use

as

straightest

the trace within

Adjust

5-2)

INTENSITY

the

so

brightness

CAL

until the trace

R1021

reference

a

lrace

at top and

graticule

the

so the

of

characters

provides

OUT

signal

(Figure

cursor,

line

to

area

trace

readout

the

should be

the

best

from

the

is

with

is

RF

-

Adjust Deflection

3

Respo

C4057, C4061 , C5021,

lection Amplif

Def
C1040, C1030,

492BlP Deflection

When
must be connected
rather than as
ACCESSORIES
manner.

connect

a.

1 ms. Position the

Set the

b.

amplitude
Select

nse

adjusting

shown

the

Function

of

and Ground

ier

C3080, C3060,

Option

to the

in Figura 5-4.

connector

eguipment as shown

test

generator

0 to

+4

Amplifier

C5104,

board.

Amplifier

R1055,

R1055, R1066, R5020,

board.

NOTE

42 instruments,

PEN LIFT

Be sure to

when

using the

trace on

V. Connect a

respectively)

the

bottom

controls for

Gain

and

the output of the

connector

PEN

in Figure

graticule

a 500 Hz

jumper

the ACCESSORIES connector.

on

and Frequency

R1066

at

ground pin

between

on the 492AlP

Function

rear

the

LIFT

connector

5-4. set the

line.

sinewave

pins

and

of

the

t

of the

1

R5030

instrument,

in this

TlMHDlv to

signal,

and 5

the

on

Generator

with

an

(Ext

Video

5-8

4gzLtP &

gzBtP

Servlce,'Vol.

1

justment

Ad

Procedure

c

ooo

oo

Time illark

Ganarator

BNC

Partial
J104

T-Connector

(Rear

Accessory

Panel)

Oscllloscope

Showing

Gonnector

c

MARKER/vIDEo

Input

Spectrum

1 3'\

Analyzer

2 5

i

14

Under

1

Test

I

Jumper

Pln

1 to

Pin

5

Figure

5-4: Test

equipment

Deactivate

c.

produce

d.

fliu9t

492BlP

Disconnect

e.

t.

g.

jurnper

the
Triggering

calibrate

1)

Set

2) Monitor
Multimeter).

3)

{Ojugt

(rP2).

4l

Set the

Reset

the

setup

vert

(Figure

TIMHDIV

for

VIEW

a

stable

Gain,

the 500

between

FREE

to

the cenler

TP2

MANUAL

the

horizontal

MANUAL

adjusting

A

and VIEW

sinewave

R1060

5-6) for

Io MNL.

on

for

a

Hz

signalfrom

pins

1

RUN.

of the

the Sweep

SCAN

POSITION

scAN

the

Deflectlon

B,

and sel TRIGGERING

on

the

spectrum

492Np (Figure

the

full-screen

the MARKER/VIDEO

and

5 of the ACCESSORIES

screen for

control for

0 Vorts

(Figure

board

control

controlto

a

analyzer

display.

as

5-9) with

for

0.0

center the

reading

follows:

V

of +5

Amplifier.

lNT. This

to

display.

5-5) or R1066

input.

c6nnector. Reset

voltmeter

a

reading

on the

CRT beam

v

Tp2.

at

should

for

the

Remove

(Digital

voltmeter

(dot).

492AlP

& 4928/P

Servlce,

Vol.

1

5-9

justment

Ad

Procedu

re

c4057

,

Y

)

I

ltiii'-3133:

ill

Figure

Q4040
Q40 30

Q4020

Q4010

5-5:

Test

polnts

c1030

adjustments

and

c1040

on t'he

R1055 R1065

492AlP

Deflection

Q1070

Ampllfier

Q1090

board.

R5020

5-10

Figure

R5030 c3060

5.6.

4928/P

Deflecilon

Ampllfier

test

Q3080

points

492AlP &

and adiustments.

492BlP

Servlce,

Vol.

1

Adjustment

Procedure

h.

fliu_st_Holz
492BlP

(10th

i.

Set

the

graticule

j

Disconnect
Press

k.
t.

Adjust
C3080
shape

Adjust
c1040 for
character

n.

Check
readout,
and readjust

Only

complete

R1055 for

Gain,

(Figure

graticule

MANUAL

line

<Blue-SHIFT>

c5021

for

(no

c4061

5-6), to

line).

SCAN

and check that

voltmeter

the

RESET

and c4057 tor
4928/P

the

overshoot

or

and C5104

the 492BlP

shape.

the appearance

and

the

letter

as needed

part

when

o

rhe 4g2vp

position

the

control to

voltage

the

and set

(Figure

TIME/D|V

restore

to

492AiP (Figure

the

5-6)

roll-off).

for

the 492AlP

(Figure

of lhe

"X"

for

letter

in

MAX

best

5-o)

vertical

NOTE

adjusting the

(Figure

CRT

beam

position

at Tp2

the

for

the

(Figure

for

the best

"7"

in

GHZ
Frequency

of the

and

4928/P

5-5)

on the right

the

CRT

is now

AUTO.

to

power-up

R1055

or

(dot)

beam

-s.0

settings.

graticute

v

5-5) or c3060

best

vertical

horizontal

readout

5-5)

or C1080

readout

of the FREQUENCY

SPAN/DIV

horizontal

Deflection

readout

Amptifier.

for

the

on

the left

t0,z

v.

and

character

and

readout,

shape,

edge

o. Adjust

R5020, R/O

the readout

1)

For

standard instruments,
below
above

2)

For

Option 43
slightly
slightly

4.

Adjust

R1040,
R1033,

a.

R1050,
R1034,

ltanthe

PULSE

STRETCHER,

the instructions

1)

Adjust
Digital

vefiical

the

2l Adjust

Digital

the horizontal

Gain,

and

characters.

the top

the

graticule

baseline.

line,

(reduced graticule),

above

the top

below the

Digital

R1055,
R1045

Digital

Storage Calibration routine

that are

Output

Storage

Output
Storale

Offset

board

graticule

Offset

board

graticule

graticule

baseline.

Storage

R1060

and

and R1046

and

select

displayed on

R1040

place

to

lines.

R1045

place

to

lines.

R5030, R/O

place

and

Offset, for

the

top two rows

place

the

set

the top two rows

line,and

Calibration

on

on the Vertical

itern

and Output

the risers

and

the

2

the

Output

the

steps of

(DIGITAL

Horizontar

by

CRT.

bottom

place

the

storage

pressing

STORAGE

R1050

Gain

of the

adjustment

R1033

Gain

the

adjustment

the best

placement

of readout

readouts

bottom

storage

slightly

readout

of

readouts

board.

6oard.

<Blue-SHIFT>

CAL).

on the

pattern

the

on

pattern

of

slightly

Fonow

Horizontal

on

Vertical

on

492AlP

&

492BlP

Servlce,

Vol.

1

5-11

Adjustment

Procedure

G)

VIDEO AMPL

PROCESSOR

Figure

Digital

5-7:

storage adjustment

b. Connect CAL

controls as

follows:

Oulpul Galn

B1 033

OUT

signalto

Input

Galn

Rl034

Output Gain

locations.

RF INPUT,

the

gugpgl

R1050

Offset

R1 04S

Output

.-'

s1050

Input Offset

Offset

R1055

and setthe Spectrum

R1046

put

Rl 060

Gain

Analyzer

FREQUENCY 100 MHz
FREQUENCY
RESOLUTION

MIN

ATTEN

RF
VERTICAL DISPLAY
NARROW VIDEO
VIEW A/B

PEAK/AVERAGE

c, Set

d.

e. Set the

the REF

the

bottom

Adjust
board, to

repeatedly

of

Input Offset R1046

match

switching

REF LEVEL

graticule.

f . Adjust Input

match

to

g.

Because the offset
as

the

necessary.

SPAN/DIV

BANDWIDTH

FILTER

LEVEL

so the

signal

graticule.

(Figure

the stored display to

VIEW

B on and

to bring the signal

and

(Figure

to

gain

H1034

Gain

stored display

kHz

2A0
1 MHz
O dB
2

dB/DIV
On
Off
Fully

Counterclockwise

peak

is

about

5-7), on the

non-stored

the
off .

peak

on the

5-7),

non-stored display.

the

adjustments

interact, repeat

one division above the

Vertical

close

Digital

display

the top of

to

Storage

while

the

Vertical Digital Storage board,

steps

c through

f

5-12

4g2AlP

&

4gz}lP

Service,

Vol. 1

h.

Select

these

settings:

Adjustment

Procedure

FREOUENCY
FREQUENCY
RESOLUTION
REF

LEVEL

MIN

RF ATTEN

VERTICAL
NARROW
VIEW

A/B

PEAK/AVERAGE

Adjust

match

signal

k.

f{ust

5-7),

stored

5. Adjust

R1062

When
must
rather
ACCESSORIES

Input

oflset,

the horizontal

at center

Input

Gain, R1060

match

to

signal

Sweep

on the Sweep

adjusting

be connected

than as

Option 42 instruments,

shown in

connector when

manner.

SPAN/DIV

BANDWIDTH

DISPLAY

VIDEO FILTER

R1055

on the

position

screen.

on

horizontal

the

near

the

right

edge of

Timing

board.

to

PEN

the

Figure

LIFT

5-4. Be

600 MHz

100

MHz

Auto

-20

dBm
O dB
1O

dB/DIV
Off
Off
Fully

Countercfockwise

Horizontal

of

the

stored

Horizontal

the
position

ol lhe

the screen.

NOTE

the

output of

connector

sure to

using the PEN

Digitar

signal

to that

Digital
stored

the

rear

at the

ground

L\FT

Storage board,

of the non,stored

Storage

signal

pin

connectar

board

to

that of

Functian

instrument,

of

the

I

of the

in

Generator

this

to

(Figure

non-

thb

a.

Connect

the test

Spectrum Analyzer

FREQ
TIMSDIV
TRIGGERING

b.

Connect

jumper

a

respectively)

c. set

e_ditpt_Sryeep

d.

492BlPr,

the

Time

for

align markers

e.

Check

the

accuracy

center eight

f .

Reset
AUTO
mark
pins
moved in

TlMgDlV

the

RESOLN.

generator

1

and 5 of the ACCESSORIES

part

equipment

controls :

SPAN/DIV

between

on

Mark

1 marker

with

ACCESSORIES

the

Generator

Timing,

R1062

per

graticule

of

the

divisions must

AUTO

to

Return Triggering

from

the Spestrum

d.

as shown in

10 MHz
10

EXT

pins

1

and 5

controls for 10

(see

Figure

division.

lines.)

remaining

not

(Use

exceed x5

FREQ

and

to

Analyzer.

conneclor.

Figure

less

or

ms

(Ext

Video

connector.

ms

for 492NP

5-9

Horizontal

TlMgDlV

%.

SPAN/D|V

FREE

RUN.

Remove

5-8.

Set

the

Select

and Ground

time marks.

and

Position

selections.

Error

to MAX,

Disconnect

jumper

the

Reposition

the trace

following

Figure

5-5

adjustment to

over

the

and activate

the time-

between

if

for

492AlP

& 492glP

Service,

Vo

l.

1

5-13

Adjustment

Procedure

To

MARKER/VIDEO

Time Mark

Generator

I

Trigger

Marker

Out

Out

-\l/

: ­::

Partial
Accessory

Back Panel

To HORIZ/TRf

Showing J104

Connector

g

Connect

Between

G

rtttlG?rt
cltrtlrrtilFrEt-

-n-EtILg

u

J

Pins

t3

mper

1

rarlt

&

Flgure 5-8:

Test

W*P1o2o

Figure

5-9: Sweep

equlpment setup

U

board tlming

adjustment

for

adlustlng sweep

and

test

polnt

tlmlng.

locations.

5-14

492AlP

&

492BlP

$ervice,

Vol,

1