Tektronix SG 503 User manual

Brand: Tektronix

Model: SG 503

Type: User manual

Te

k

t

r

o

n

ix,

Inc

.

Ρ

.

Ο

.

Box500

B

eaverton,

O

r

ego

n

97077



Serial

Nu

m

be

r

ο7

ο

-

1622

-oi

Ι

Ν

S

m

Γ

UCTION

MANUAL

F

i

r

st

Pr

i

n

ti

n

g

AUG

1974

'It



,



:

-IONIX

ouio

kA

W?

60i"Oul"lly

rou0sw

~-,-

bv

Tckiro7

,-,

,

-, .f

ied

in

the

United

~

~ntes

of

America

.

.

iebetve

.'

.

Conteni

;

.

i

:

,

f

this

publicatio

: ,

nc~

.y

not

Lie

weyfuMomd

in ai

-

iy

forrivvithout

pemiisL

ti

vii

of

hQuiAm

.

K

c

.

, :

, I ;

"r1'

;j

k

.>'~ 4

01

to

the

O-Kfk(')NIX

Aw

.

"ber

or Pnrt

Numbw

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ScAl

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~

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feWro"m

SECTION

1

S

E

CTIO

N

2

CHA

N

G

E

I

NF

O

RM

ATIO

N

R

E

V

.

C,

OCT

1977

WARNING

THE

F

O

LL

O

W

I

N

G

SER

V

ICI

N

G

I

N

STR

U

CTIO

N

S A

RE

F

O

RU

S

E

BY

Q

U

A

L

I

F

I

E

D

PER

SO

NNEL

O

NL

Y

.

T

O

A

V

OID

PER

SO

N

A

L

I

NJUR

Y,

DO

NOT

PERFORM

ANY

SER

V

ICI

N

G

OT

HER

THAN

THAT

CO

N

TAI

NE

D

IN

O

P

ERATI

N

G

I

N

ST

RU

CTIO

N

S

UNLE

SS

YO

U

A

RE

Q

U

A

L

IFIED

Τ

0DO

SO

.

SECTION

3

AD

JUST

ME

NT

3-1

S

E

CTIO

N

4

M

AINTE

N

ANC

EAND

I

NTERFACIN

G

I

NF

O

RM

ATIO

N

4-1

S

E

CTIO

N

5 CI

RC

U

IT

DESCRIPTION

5-1

SE

CTIO

N

6

OPTIONS

6-1

S

E

CTIO

N

7

REPL

AC

EA

BLE

EL

ECTRICA

L

P

A

R

TS

7-1

SE

CTIO

N

8

DIAG

RA

M

A

N

D

CI

R

CU

IT

B

OA

R

D

ILLUSTRATION

8-1

SE

C

TI

O

N

9

REPL

ACEA

BLE

M

E

C

H

A

N

ICA

LP

A

R

TS

AND

E

X

PL

OD

E

DV

IE

W

9-1

P

age

O

PER

ATI

NG

I

N

STR

U

CTIO

N

S

1-1

S

PE

CIFICATIO

N

AND

PERF

O

RM

A

N

C

E

C

HE

C

K

2-1

F

ig

.

1-1

.

SG

503

L

eveled Sine

W

ave

Generator

plug-in

module

.

SG

503



REV,

Β

,

OCT

1977

Desc

r

i

p

tio

n

I

N

TROD

U

CTIO

N

T

h

e

SG

503

L

evele

d

Si

n

e-

W

ave

Ge

n

erator

p

rovides

α

regulated,

co

n

stant-amplitude

versus

fre

quen

cy

outp

ut

i

n

to

α 50-oh

m

load

.

T

he

SG

503

is

p

rimarily

intended

to

be

u

sed

as an

oscilloscope

cali

b

ration

device

for

measuring

bandwidt

h s

up

to

250

mega

h

ertz

.

The

SG

503can

also

be

used

as α

signal

source

for

general

electronics

design

and

develop

me

n

t

.

N

i

n

e

overla

pp

i

ng

ra

n

ges

cover

t

he

fre

quen

cy ba

nd

fro

m

250

k

ilo

h

ertz

to

250

mega

h

ertz,

wit

h an a

dd

itional

range

reserved

for

α 50 k

ilo

h

ertz

reference

frequency

.

Α

digital

cou

n

ter

wit

h

automatic

rangi

ng a

nd

α

front

panel

L

E

D

readout

is

used

for

freq

u

e

ncy

i

nd

icatio

n

.

REV

.

C,

OCT

1977

F

ig

.

1-2

.

P

lug-i

n

i

n

stallatio

n

and

removal

.

I

n

stallation

and

R

emoval

CA

U

TIO

N

Sectio

n

1--SG

503

Tu

rn

th

e

p

owe

r

mo

d

ule

off

before

i

n

serting

t

heplug-

in

;

otherwise,

d

amage

may

occ

u

r

to th

e

plug-in

circuitry

.

B

ecause

of

t

h

e high

current

d

r

aw

n

by

t

h

e

SG

503,

it

is

also

r

ecommended

t

h

at

t

h

e p

ower

module

be

tu

r

ne

d

off

before

removing

t

he

SG

503

.

R

efe

r

to

Fig

.

1-2

.

C

h

eck

to

see

t

h

at th

e

plastic

barriers

on

t

he

interconnecting

jac

k

of

t

he

selected

power

module

com

p

a

r

tment

matc

h

t

he

cut-outs

in

t

h

e

SG

503

circuit

boar

d

edge

connector

.

Alig

n

th

e

SG

503

ch

assis

wit

h

t

he

upper

and

lower

guides

of

t

h

e

selecte

d

compartment

.

P

us

h

t

h

e

mo

d

ule

i

n

a

n

d

press

firmly

to

seat

t

he

circuit

board

in

t

h

e

i

n

ter-

connecting

j

ac

k

.

O

p

e

r

ati

n

g

I

n

str

u

ctio

n

s-SG

503

LED

Dis

p

lay

T

hr

ee-

d

i

git

r

ea

do

u

t

I

nd

icates

ou

t

pu

t f

r

e-

qu

e

ncy

FREQ

UEN

CY

V

A

R

IA

BLE

Selects

o

u

t

pu

t

fr

e-

qu

e

n

cy

wit

h

i

n

t

he de-

s

i

re

d

fr

e

qu

ency

r

an

ge

OUTPUT

A

MPL

IT

UD

E

V

O

L

TS

Ρ

-

Ρ

Deter

m

i

n

es

t

he

p

ea

k

-

to-

peak a

mp

lit

ud

e

i

n

to

t

he

atte

nu

ato

r

(A

MPL

I-

T

UDE

MUL

TI

PL

I

ER)

FRE

Q

UEN

CY

V

A

R

IA

BLE

FRE

Q

UEN

CY

MHz

ι

A

MPL

IT

U D

E

MUL

TI

PL

I

ER

r

1D0



CALIBRATED

WITH

CA

BLE

ΡΝ

012-

0482

00

250



INTO

500

O

UT

PU

T

2ο

=

5012

τεκτιιοηιχ

®



SG

503

LEVELE

D

SI

NE

W

A

VE

G

ENER

ATO

R

F

ig

.

1-3

.

SG

503

co

n

trols

and

conn

ecto

r

s

.

A

MPL

IT

U

D

E

MUL

TI

PL

I

ER

T

hree-p

ositio

n

leve

r

switc

h

to

allow

c

h

oice

ο

1

un

atte

n

uated o

r

atte

n

-

u

ate

d

o

u

t

pu

t

am

p

lit

ud

e

.

O

u

t

pu

t

am

p

lit

ud

e

is

OU

T-

PU

TA

MPL

IT

U

D

EV

O

L

TS

Ρ

-

Ρ

co

n

t

r

ol

setti

ng times

t

h

e

facto

r

i

nd

icate

d by

t

h

e

A

MPL

IT

UD

E

MUL

TI-

PL

I

ER

switc

h

p

ositio

n

FRE

Q

UEN

CY

R

A

N

G

E

(MHz)

Selects

t

he

d

esi

r

ed

f r

e

qu

ency

r

an

ge

as

i

nd

icate

d

O

U

T

PU

T

BN

C

conn

ecto

r

o

u

t

pu

t

te

r

mi n

al

.

U

se prope

r

coaxial

cab

le

as

i

nd

icate

d

on

f r

on

t

p

a

n

el

1622-03

REV

.

Β

,

OCT

1977

To

remove

t

h

e

SG

503,

ρυΙΙ

on

t

h

e

release

latc

h

located

in

t

h

e

lower

left

corner,

until

t

he

interco

nn

ecting

j

ack

d

isengages

an

d

t

he

SG

503

will

sli

d

e ou

t

.

P

ower

application

to

t

h

e

SG

503

is

i

n

dicated

by

t

he

t

h

ree-digit

L

ED

(

L

ig

h

t-

E

mitti

ng Diod

e)

dis

p

lay

being

lig

h

te

d

.

Tur

n

t

he F

REQ

U

E

N

CY

R

A

N

G

E

(MHz)

control

between

t

h

e

deten

t

p

ositio

n

s

to

test

t

he

LE

D's

(888

d

is

p

lay)

.

R

eset

t

he

FREQ

UE

N

CY

R

A

N

G

E

(

MH

z)

co

n

t r

ol

to

t

he

desired

ra

n

ge

.

Allow

15

to

20 min

utes

warmu

p

time

fo

r

all

eq

uipment

before

usi

ng

t

he

SG

503

.

Over

h

eati

ng

T

h

e

SG

503

is

designed

to

o

p

erate

at

an a

m

bie

n

t

tem

p

erature

from

0°

C

to

+50'C

.

H

owever,

w

hen

op

erati

ng

several

p

ower

su pp

lies

i

n

α

multi-plug-in

power

m

odule,

esp

ecially

at

low output

voltages,

or

w

hen

o

p

erating

close

to

ot

h

er

h

eat-producing

equipment,

inter-

nal

tem

p

erature

may

excee

d

safe

limits

an

d

actuate α

t

h

ermal

cutout

i

n

t

he

power

mo

d

ule

.

R

efer to

t

he

power

m

odule

i

n

str

u

ction

man

u

al

for

more

complete

informa-

tio

n

.

Controlsan

d

Connectors

R

efer to

Fig

.

1-3

.

Even

t

h

oug

h

t

he

SG

503

is

fully

calibrated

an d

rea

dy

to use,

t

he

fu

n

ctions

an d

actio

ns

of

t

he

controls

and co nn

ectors

sh

oul

d be reviewed

b

efore

atte

mp

ti

n

g

to

use

it

.

P

ress

t

he

OU

TP

UT

button

to

apply

p

ower

to

t

he

SG

503

.

CAUTION

c

If

t

h

e

instrument

is

op

erate

d

at

t

he

extre

m

e

limit

of,

or

beyon

d

α

ban

d

range,

t

he

front-panel

d

isplay

may

flas

h α

blin

king

indication,

alerting

t

he

use

r

to

an

unleveled out

p

ut

am

p

litude

condition

.

OPERATING

CONSID

I

n

t r

oductio

n

ATIO

N

S

T

he

SG

503

h

as b

een

d

esigned

and

cali

b

rate

d

wit

h α

h

ig

h

qu

ality

coaxial

cable

(

P

art

N

umber

012-0482-00)

to

o

pe

r

ate

as α

closely

matc

hed

system

w

h

e

n

termi

n

ated

into

α 50-o h

m

loa

d

.

See

F

ig

.

1-4

Α

.

The

absolute

amplit

ude

across

t

h

e

loa

d

is

d

irectly

relate

d

to

its

im

ped

ance

.

P

art

N

um

b

er

012-0482-00

should be

connected

d irectly

to

t

he

equ

ipme

n

t

under

test

if

t

h

e

input

impedance

of

t

he

equipment

is

50 oh

ms

.

F

or

eq u

ipment

wit

h an

input

impe

d

ance

muc

h

greater

t

han 50 ohms,

an

accurate 50-

oh

m

termination

s

h

o

u

ld

b

e

connecte

d

b

etween

t

he

coax-

ial

cable

and

t

he

e

qu

ipment

.

Teecon

n

ectors

or

wire

of

any

ty

pe

b

etwee

n

t

he 50-oh

m

terminatio

n and

t

he eq

ui

p

me

n

t

b

ei

ng

tested

will

p

roduce

some

va

r

iatio

n

i

n

t

he

calibrated

output

am

p

litude

at

h

ig

h

er

frequencies

.

R

EV

.

Β

,

OCT

1977

Open-Circuit

O

p

eratio

n

Capacitive

Loads

Operating

Inst

r

uct

i

ons-SG

503

Coaxial ca

b

les

of lesser

quality

or cab

les

t

h

at

are

lo

n

ger

or sh

orter

t

han

P

art

N

um

b

er

012-0482-00

can

be

used,

b

ut

t

h

eo

u

tp

u

t

am

p

lit

ud

e

flatness

specifications

are no

longer

ap p

lica

b

le

.

Cables

t

h

at

are

2

feet

longer

or

2

feet

sh

orter

t

h

a

n P

art

Nu

m

b

er

012-0482-00

can

cause

am

p

litude

variations

t

h

at

are

as

muc

h as 4

ο

/

ο

low

or

2

ο / ο

h

ig

h

(respectively)

w

hen

compared

to

t

he

calibrate

d

amplitu

des

at

250

mega

h

ertz

.

O

p

timum

p

erfor

m

ance

is

obtained

w

hen

t

h

e

setting

of

t

h

e

OUTPUT

A

MPL

IT

UD

E con

trol

is

i

n

t

h

e

1

.0

to

5

.0

ra

n

ge

.

F

or

exam

p

le

;

w

h

e

n

an

out

p

ut

am

p

litude

of

0

.5

volt

pea

k

-to-pea

k

is

desire

d

,

set

OUTPUT

A

MPL

IT

UDE

co n

-

trol

to

5

.0

an d

A

MPL

IT

U

D

E

MUL

T

I

PL

I

ER

switc

h

to

Χ

.1

i

n

stea

d

of

0

.5

and

Χ

1

.

Th

e

si

n

e-wave

o

u

tp

u

t

from

the

SG

503

may

b

e

applie

d

to

an

exter

n

al

d

o

level

t

h

at

d

oes

not

excee

d

11

volt

.

At

h

ig

h

er

do

offset

levels,

couple

t h

e output

t

hroug h

α

do

b

loc

k

ing

capacitor

.

Wh

en operating

t

he

SG

503

always

co n

si

d

er

t

he

total

loa

d

impe

d

ance

an

d

its

effect

on

t

he

output

am

p

lit

ude

.

Wh

e

n

t

h

e

SG

503

is

operating

into

an

im

p

edance

muc

h

greater

t

h

an 50

o

hms,

up

to

twice

t

he

maxim

u

m

ter-

minated

output

amplitude

can be

obtai

ned

.

Und

er

o

pen

-

circ

u

it

con

d

itio

n

s,

t

h

e

actual

outp

ut

am

p

litu

d

e

will

be

two

times

t

he amplitude

i

n

dicate

d by

t

h

e

fro

n

t

panel

controls

.

O

p

e

n

-circ

u

it

amplitu

d

e

flatness

is

not

specifie

d

,

but

is

ade

quate

for

ma

ny

applications

in

t

he lower

fre

q

uency

b

an

d

s

b

ecause

t

h

e

stea

dy

state

50-oh

m

outp

ut

i

m

p

eda

nce

of

t

h

e

SG

503

reverse-terminates

t

he ch

aracteristic

im-

ped

a

nce

of

α 50-oh

m

coaxial

ca

b

le

.

T

he

reverse

termina-

tio

n keeps

t

h

e

out

pu

t

amplitu

de constant

at

t

he

unter-

minate

d

e

nd

of

t

heca

b

le

even

t

h

oug

h

stan

d

ing

waves

may

exist

i

n

t

he

coaxial

ca

b

le

.

T

he

in

p

ut

ca

p

acita

nce

of

t

he

eq

uipme

n

t

u

n

der

test

will

affect

t

he ba

nd

width

.

T

he

equivalent

circuitsshown

i

n

Fig

.

1-4

Β

and F

ig

.

1-4C

are

useful

i

n

estimati

n

g

t

he

am

p

litude

ch

anges

cause

d

b

y

r

eactive

loa

ds

.

N

ote

t

h

at as

system

i

npu

t

cap

acita

n

ce

i

n

creases,

b

a

n

dwidt

h

d

ecreases

.

T

he

b

andwid

t

h

of

an

oscilloscope

wit

h αh

ig

h

i

nputim

p

eda

nce

is

usually

sp

ecified

usi

n

g

an eq

uivale

n

t

25-oh

m

source

.

Wh

en o

p

erati

ng

t

h

e

SG

503

on

t

h

e

h

ig

h

er

fre

q

uency

b

a

n

ds

wit

h

no

out

p

ut

attenuation,

t

h

e

fro

n

t-

pa

n

el

d

is

p

lay

may

flas

h

, i

nd

icati

ng

an

u

n

levele

d

out

p

ut

amplitude

.

Switc

h

the

A

MPL

IT

U

DE

MUL

TI

PL

I

ER

control

to

t

he

Χ

.1

p

ositio

n and

if

t

he

dis

p

lay

flas

h

i

ng

ceases,

t

he p

roblem

may

be

related

to

an

extreme mismatc

h b

etwee

n

t

h

e

SG

503

a

n

d

t

h

e

load

.

If

t

h

e

SG

503

is

op

erati

ng

i

n

to

α h

ig

h

S

WR,

α

3-decibel

atte

nuator

inserted

betwee

n

t

he outp

ut

and

t

h

e

load

may

im p

rove

t

h

e

o

p

eratio

n

at

full

ou

tput

amplitude

(

Χ

1

p

ositio

n

of

t

h

e

A

MPL

IT

U

DE

MULTIPLIER

switc

h

) .

Operating

I

n

st

r

uctio

n

s---

S

G

503

(A)

Matched

system

(C)

Capacitive

load

500

AAN-S-----(

:~



PN

012-0482-00

I



--

---------

-

25

Q

-AV\IV---

ι

V

g

%

c

qj

)

V

c

50

Q



I

W----,a



PN

012-0482-00

(B)

Oscilloscope

with

high

input

impedance

50

Q

FEEDTHROUGH

TERMINATION

vv

-

\



TV"

VC

F

ig

.

14

.

Equivalent

circuits

for

SG

503,

50

ohm

coaxial

cable

and

various

terminations

.

OSCILLOSCOPE

W

IT

H

50

0

INPUT

IMPEDANCE

co

-

3

dB

cutoff

frequency

2xRC

162004

REV

.

E,

OCT

1977

P

erfor

m

ance

Co

n

ditions

C

ha

r

acteristics

Fr

equen

cy

R

a

n

ge

Accuracy

Am

p

litude

R

ange

Accuracy

REV

.

Β

,

oc

-

Γ

197

7

'The

electrical

ch

aracteristics

are

vali

d

only

if

t

he

SG

503

h

as

been

calib

r

ate

d

at

an

ambient

tem

p

erature

betwee

n

-i

20°

C

and

+30°

C

an

d

is

operating

at

an

ambie

n

t

tem

pe

r

ature

between

0°C

and

+50°C

un

less ot

h

erwise

n

oted

.

T

he

SG

503

is

calibrated

for

u

se

wit

h α

fur

n

is

hed

coaxial

cable

accessory

(See

Stan

d

ard

Accessories

i

n

R

ep

laceable

M

echa

n

ical

P

arts

list

section)

terminated

i

n

to

α 50-oh

m

loa

d

.

C

Ι

F

Ι

CΑT

Ι

Table

2-1

Ν

E

LE

CT

R

ICA

L

C

H

A

R

ACTERISTICS

P

erfo

r

mance

R

eq

ui

r

e

m

ents

250

kH

z

to

250

MH

z,

p

lus

50 kH

z

refere

nce

W

it

h

i

n

-i-0

.7

of

o

ne

cou

n

t

of

t

h

e

least

sig

n

ifica

n

t

dis

played

digit

fo

r t

h

e

i

n-

d

icate

d

fre

q

ue

ncy

.

5

m

V

to

5

.5

V

peak

-to-pea

k over

t

h

ree

d

ecade

r

an

ges

a

nd terminated

into

α

50-

Ω

load

.

At 50

kH

z

reference

frequency

;

wit

h

i

n

3

ο

/

ο

of

indicate

d

amplitud

e

on

Χ

1

ra

n

ge,

4

ο

/

ο

on

Χ

.1

range,

and

5

ο/

ο

on

Χ

.01

ra

n

ge

.

ΝΟΤΕ

Items

listed

i

n

t

h

e

P

erforma

n

ce

R

eq

uireme

n

ts

column

of

t

he E

lect

r

ical

C

h

aracteristics

are

verifie

d by

completi

ng

t

he P

erforma

n

ce

C

heck

i

n

t

h

is

manual

.

Items

liste

d

in

t

he

S

u

ppleme

n

tal

I

n

for

m

atio

n

column

are not

verified

in

t

h

is

man

u

al

;

t

hey are

eit

h

er

exp

la

n

atory

notes or

performance

c

h

aracteristics

for

w

h

ic

h no

limits

are sp

ecifie

d

.

Su

pp

leme

n

tal

Information

Section

2----SG

503

Accuracy

must

be

set

to

wit

h

i

n

0

.3

ο/ο

on

Χ

1

ra

nge and ch

ec

k

ed

to

be

wit

h

i

n

2

.

Οο

/ο

on

Χ

.1

a

n

d

Χ

.01

ra

n

ges

.

F

latness

(

Peak

-to-

P

ea

k

)

valid

only

w

h

en

p

r

ecision

coaxial

cable

is

use

d

.

F

latness

referenced

to

NB

S

corrections

of

Tektronix

stan

d

a

r

d

s

.

N

BS

uncertainties

not

included

.

Sp

ecificatio

n

an

d

P

erformance

C

h

ec

k

--SG

503

C

h

a

r

acteristics

Flatness

(

P

ea

k

-to-Pea

k

)

Am

p

lit

ud

e

M

ultiplier

Setti

ng

:

Χ

1,

Χ

.1,

Χ

.01

Amplitude

M

ulti

p

lier

Setti

ng

:

Χ

1

Am

p

litu

de

Mu

ltiplier

Setti

ng

:

X

.1

and

X

.01

H

a

r

mo

n

ic

Co

n

tent

Altitude

O

p

erati

ng

-40'C

to

4-75'C

.

V

ibratio

n

Operating

an

d

Non-

operating

Sh

oc

k

O

p

erati

ng a

n

d

Non-

operating

2-2

ELE

CTRICA

L

C

H

A

R

ACTERISTICS

ηΟ

Performance

R

equirements

F

rom

250

kH

z

to

50

MHz

out

p

ut

amplit

ud

e

will

n

ot

vary

more

t

han

1

ο/

ο

of

t

h

e

value

at

50

kH

z

.

F

rom

100

MHz

to

250

MH

z

am

p

li-

tude

variation

is

wit

h

in

3

ο/ο

of

t

he value

at

50

kH

z

.

50

MH

z

to

100

MH

z

ra

n

ge

;

output

am

p

litude

will

not

vary

more

t

ha

n 1 ο

/

ο

of

t

he

value

at

50 kH

z

.

50

MHz

to

100

MH

z

ra

n

ge

;

output

amplitu

d

e

will

n

ot

vary

more

t

ha

n

-f

1

.5%

and

--1

.0%

of

t

h

e

value

at

50

kH

z

.

H

armo

n

ic

su pp

ressio

n

relative

to

funda-

mental

:

Seco

nd h

armo

n

ic

at

least

35

d

B

down

.

T

h

ird

and

all

h

ig

h

er

h

armo

n

ics

at

least

40

dB

d

own

.

To

15,000

feet

maxim

u

m

operati

ng

tem

p

erature

d

ecrease

d by

1°C/1000

feet

from 5000

to

15000

feet

.

W

it

h

t

he

instr

u

ment

com

p

lete

a

n

d

op

erati

n

g,

vibration

frequen

cy

swe

p

t

from

10

to

55

to

10 Hz

at

1

mi nute

p

er

swee

p

.

V

ib

r

ate

15 mi

n

utes

in

eac

h

of

t

he

t

h

ree

ma

j

or

axes

at

0

.015

inc

h

total

d

isplaceme

n

t

.

H

old

10 mi n

utes

at

any

ma

j

or

resonance, or

in

non

e,

at

55

H

z

.

Total

time,

75 mi

n

utes

.

30

g's

1/2

sine,

11

ms

d

uration,

3

sh

oc

k

s

in

eac

h

d

irection

along 3

ma

j

or

axes,

for

α

total

of

18 s

h

oc

k

s

.

Table

2-1

(cont)

Table

2-2

Su

p

p

lemental

I

n

formation

E

NV

I

R

O

NMEN

TA

L

C

H

A

R

ACTE

R

ISTICS

Τ

`

Pe

r

fo

r

mance

R

eq

ui

r

eme

n

ts



Su

ppleme

n

tal

Info

r

matio

n

R

S

V

.

C,

A

PR

.

197

8

Overall

Dime

n

sions

(measured

at

maximum

points)

H

eig

h

t

W

idt

h

Len

gt

h

N

et

W

eig

h

t

(I

n

stru

m

en

t

Only)

Introductio

n

C

ha

r

acte

r

istics

Με

4

Ν

C

CHECK

Th

is

procedure checks

t

h

e

electrical

ch

aracteristics

of

t

h

e

SG

503

t

h

at

a

p

pear

i

n

t

he

Specification

section

of

t

h

is

ma

n

ual

.

If

t

he instrumen

t

fails

to

meet

t

h

e

re

q

uireme

n

ts

give

n

i

n

t

h

is

p

erforma

nce chec

k

,

t

h

e

calibration

proced

ure

s

h

oul

d

be

p

erforme

d

.

T

h

is

procedurecan

also

be used

by an

i

n

comi

ng

i

n

s

p

ection

facility

to

d

etermine

acce

p

tability of

p

erforma

n

ce

.

The

electrical

c

h

aracteristics

in

Section

2

arevali

d

only

if

t

h

e

SG

503

is

calibrated

at

an

ambie

n

t

temperat

u

re

of

+20°

C

to

-+30°

C

and

operated

at

an

am

b

ient

temperat

u

re

of

0°C

to

-+50°C

.

F

orced

air

circulation

is

re

q

uire

d

for

ambient

tem

p

erature

above

4_40°

C

.

REV

.

Β

,

OCT

197

7

Specificatio

n

a

nd P

erfor

m

ance

C

h

ec

k

----SG

503

Table

2-3

PH

YSICAL

CHA

R

ACTE

R

ISTICS

5

.0

i

n

c

hes

12

.7

cen

timeter

2

.6

inc

hes

6

.6

cen

timeter

12

.2

i

nches

Test

Eq

u

ip

m

e

n

t

R

equired

Tole

r

ances

t

h

at

aresp

ecifie

d

i

n t

h

is

performa

n

ce

check

p

roced

ure

apply

to

t

h

e

i

n

strument

under

test

a

n

d

do

n

ot

i

n

cl

u

de

test

e

q

ui

p

me

n

t

error

.

T

h

e

test

eq

ui

p

me

n

t

listed

i

n

Table

2-4,

or

e

q

uivalent,

is

re

qu

ired

to

p

erform

t

h

e pe

r

forma

nce c

h

eck

.

Test

eq

u

ip-

ment

ch

aracte

r

istics

listed

are

t

h

e

min

imum

require

d

to

verify

t

he

p

erforma

nce

of

t

h

e

equipment

under

test

.

Substitute

equip

me

n t

must meet

or

excee

d

t

he

state

d

re

qu

ireme

n

ts

.

All

test

eq

ui

p

me

n

t

is

assume

d

to

be

operati

n

g

wit

h

i

n

tole

r

ance

.

S

p

ecial

test

d

evices are

use

d

wh

ere

necessary

to

facilitate

t

h

e

procedure

.

M

ost

of

t

hese

are

available

from

Te

k

tro

n

ix,

I

nc

.

an

d

can

be

ordered

t

hroug

h

your

local

Te

k

tronix

F

ield

Office

or

representative

.

2-3

Specification

and

Performance

Check

.

--SG

503

Oscilloscope



Banclv~icltlh,

dc

to

100

MHz

;

minimum

deflection

factor,

1

mV/div

;

sweep

rate,

accuracy,

within

3%

.

Digital

Voltmeter



I

Range,

0

to

50

V

;

accuracy,

Calibration

Generator



Amplitude

calibration,

5

mV

to

5

V

;

accuracy,

±0

.25%

into

1

MO

;

output,

square

wave

at

approximately

1

kHz

.

Spectrum

Analyzer

Peak-to-Pealk

Detector

Coaxial cable

Patch

cord

(2

required)

Coaxial cable

(2

required)

Α

uonu

ο

t

o

r,

2X

Performance

Description



Requirements

(2

required)

.

Tee

connector

Adapter

Termination

Resistor

'Requires

TM

500-Series

P

ower

Module

.

2-4

T

a

W

e

2

-4

UST

OFTEST

EQUIPMENTREQUIREMENTS

R

ο

ngo

.100kHzo

σδ

00

MHz

;

calibrated

levels

in

decade

steps from

-45

dB

to

-35

dB

;

impedance,

50D

;

accuracy,

linear

display, within

1

0%

.

Frequency

range,

50

Hz

to

500

MHz

;

requires

1

.

2Vp-p

input

voltage

.

----------

Impedance,

50

Ω

;

length,

36

inches

;

connectors,

bn

ε

;

(precision

coaxial

cable)

.

-



--

--

-----

------

Β

n

ε

to banana

p!ug

-j

a

ε

k

.

18

inch

.

42

inches

;

connectors,

bn

ε

.

Impedance,

50Q

;

ε

on-

GR

to

bnc

female

.

Impedance,

50D

;

con-

nectors,

bn

ε

.

___

Application

Used

throughout

proced-

ure

t

o

provide

display

.

Provides

signal

intercon-

nection

.

---------

----

--------



---------

Example

TEKTRONIX

7603,

7A1

3,

71370

Oscilloscope

System

.

TEKTRONIX

DM

501

Digital

K

η

uhimo

te

ι

"

Τ

EK

Τ

RO

Ν

!X

Τ

K4503or

Τ

K

η

504

.

TEKTRONIX

PG

506

Calibration

Generator

.'

TEKTRONIX

71-12

Spectrum

Analyzer

.

Tektronix

067-0625-00

Calibration

Fixture

.

Tektronix

Part

No

.

012'048

2

-00

(supplied

with

SG

503)

.

Tektronix

Part

No

.

0

12

00

90-00

(b!u

ε

k)

0

12-0091-00(md)

- -

-----

---

----

-

~

Tektronix

Part

No

.012-0057-01

.

Tektronix

Part

No

.

011-0069-02

.

Tektronix

Part

No

.

103-0030'U0

.

_____________

Τ

*WnonixPa~

Ν

o~017-0083-00

.

Tektronix

Part

No

.

011'0040-01

.

Tektronix

Part

No

.

801-0

2

45-00

.

REV

.

C,

APR

.

197

8

P

reliminary

P

rocedure

1

.

E

nsure

that

all

power

switches

are

off

.

2

.

Ensure

that

all

test

equipment

an

d

t

he

SG

503

under

test

are

suitably

a

d

a

p

ted

to

the

line

voltage

to

be

applie

d

.

3

.

Install

the

SG

503

into

the

p

ower

module,

and

if

applicable,

install

all

other

TM

500-series

test

equipment

into

the

power

module

.

4

.

Connect

the

equi

p

ment

under

test

and

the

test

equipment

to

α

suitable

line

voltage

source

.

T

urn

all

equipment

on

and

allow

at

least

20

minutes

for

the

equipment

to

warm

up

and

stabilize

.

Initial

Control

Settings

Set the

following

controls

d

uring

warm-up

time

:

AMPLITUDE

MULTIPLIER



Χ

1

FR

E

QUENCY

V

ARIABLE



M

idrange

FREQUENCY

R

ANGE

(MHz)



R

EF

-

.05

OUTPUT

AMPLITUDE



5

.0

Intensity,

F

ocus



Set

for

well-defined

trace

and

normal

brightness

.

V

olts/Div

V

ariable

+

Input

--Input

B

andwidth

Limit

Time/Div

V

ariable

Triggering

-t

-Slope

M

o

d

e

Coupling

Source

P

osition

REV

.

Β

,

OCT

197

7

SG

503

Oscilloscope

Differential

Comparator

Time

B

ase

Plug-in

.1

V

fully

clockwise

(cal)

ac

ac

5

MHz

.2

ms

(cal

in)

selected

Ρ

-

Ρ

Auto

ac

h

f

r

ej

Ext

Set so

trace

starts

at

left

si

d

e

of

graticule

.

M

agnifier



Χ

1

P

E

RF

Specification

and

P

erfor

m

a

n

ce

Check---SG

503

R

ί

VIANC

E

CHEC

K

PROCEDURE

ΝΟΤΕ

The

SG

503

m

u

st

be

terminated

into

an

accu

r

ate

50-

o

h

m

load

fo

r

all

c

h

ec

k

s

.

M

easure

t

h

e 50-oh

m

termination

to

determine

p

ercent

of

error

.

Α

2

ο/

ο

error

in

t

he

termination

(1

oh

m)

will

cause

amplitude

e

r

rors of

1

ο/ο

.

F

or

exam

p

le,

α 51-o

h

m

termination

ca

u

ses an

amplitude

erro

r

t

h

at

is

1

ο

/ο

h

ig

h

at

50

k

ilo

h

ertz

.

1

.

Check

Reference

Amplitude

Accuracy

at

0

.05

megahertz

.

α

.

Connect

a

1

k

ilohertz,

5

volt

square-wave

signal

from

the

calibration

generator,

through

α

bnc

tee

connector,

to

the

-i-

input

of

the

differential

comparator,

using α

42-inch

cable

.

Connect

α

42-inch

cable

from

the

tee

connector

to

the

time-base

unit

external

trigger

input

.

b

.

Connect

the

precision

50-ohm

cable

(supplie

d

with

SG

503)

to

the

SG

503

OUTPUT

connector

.

c

.

Connect

α

50-ohm

termination

to

the

remaining

end

of

the

p

recision

50-ohm

cable

;

connect

the

other

end

of

the

50-ohm

termination

to

the

---

input

of

the

d

ifferential

com

p

arator

.

d

.

Set

t

h

e

time-base

triggering

controls

for

α

stable

display

;

α

crt

d

isplay

similar

to

F

ig

.

2-1

is

obtained

.

e

.

Chec

k

---that

the

corners

of

the

idealized

waveform

are

aligned as

illustrated

in

F

ig

.

2-1,

within

1

.5

vertical

divisions

.

Disregard

waveform

tilt

.

F

ig

.

2-1

.

R

epresentation

of

complex

waveform

(idealized)

with

5

volt

reference

amplitude

at

0

.05

MHz,

properly

set

.

2-5

S

p

ecification

a

n

d

P

e

r

fo

r

m

a

n

ce

C

h

eck

--SG

503

f

.

Set

t

he

SG

503

OU

TP

UT

A

MPL

IT

U

DE

co

n

trol

to

0

.5

;

set

t

he

calibratio

n

generator

for

α 0

.5 volt,

1

k

ilo

h

ertz

s

q

uare-wave

signal

.

g

.

Set

t

h

e

differe

n

tial-com

p

arator

d

eflection

factor

for

10

m

V

/div

.

h

.

C

heck

---t

h

at

t

h

e

waveform

is

similar

as

ill

u

strate

d

i

n

Fig

.

2-2,

(wit

h

in

1

.5

vertical

divisio

n

s)

.

i .

Disco

nnect

all

ca b

les

.

F

ig

.

2-2

.

Display

of

com

p

lex

waveform

(idealized)

wit

h

0

.5

volt

r

efere

n

ce

am

p

litu

d

e

of

0

.05

MHz,

pr

o

p

erly

set

.

2

.

C

h

ec

k

H

ar

m

o

n

ic

Su

pp

ression

and

L

eveling

α

.

Co

nn

ect

t

h

e

SG

503

outp

u

t

to

t h

espectru

m

a

n

al

yz

er

input,

usi

ng

t

he

p

recision

50-oh

m

cable

(sup

p

lie

d

wit

h

SG

503)

.

b

.

Set

t

h

e

SG

503

O

UT

P

UT

A

MPL

IT

U

DE

control

to

5

.5

and

t

h

e

A

MPL

IT

U

DE

MUL

TI

PL

IER

switc

h

to

t

h

e

Χ

1

p

ositio

n

.

c

.

Set

t

h

e

SG

503

FR

EQ

UEN

CY

R

ANG

E

(MHz)

switch

to

t

he

100-250

ra

n

ge

.

d

.

P

ositio

n

t

h

e

fu

n

da

m

ental

dis

p

lay

to

t

h

e

to

p

graticule

line

wit

h

t

h

e

spectrum

analyzer

position

con

trol

.

See

Fig

.

2-3

for

refere

n

ce

.

2-6

Fig

.

2-3

.

Dis

p

lay

of

100

MH

z

sig

n

al

a

nd ha

r

mo

n

ics

.

NO

Ϊ

'

Ε

It

will

be

necessary

to

c

h

ange

t

h

e

spectrum

an

alyzer

input

attenuation

(sensitivity)

to

maintain a

reasonable

display

on

screen,

wit

h

harmonics

above

t

h

e

baseline

noise

level

and

within

t

h

e

g

r

at

ί

cule

area

.

e

.

Slowly

a

dju

st

t

he

SG

503

F

RE

Q

UEN

CY

VAR

IA

BLE

control

over

its

en

tire

ra

nge

an

d check

t

h

at

t

h

e

vertical

dista

n

ce

(su

pp

ression)

between

t

h

e

to

p

of

t

he

fu

n

dame

n

-

tal

and

seco

n

d

h

armo

n

ic

display

is

at

least

3

.5

divisio

n

s

;

t

he

to

ps

of

t

he

remaining

h

armo

n

ics

are

separated

at

least

4

.0

d

ivisio

n

s

.

(Ad

j

ust

t

he

s

p

ectr

u

m

analyzer

F

re

q

ue

ncy

Span/Div

control

as

necessary

to

main

tai

n

t

he h

armonic

d

isplay

on

scree

n

.)

See

Fig

.

2-3

.

f

.

Set

t

he

SG

503

F

REQ

U

E

N

CY

R

A

N

G

E

(

MH

z)

switc

h

to

t h

e 50-100

range

.

g

.

R

epeat

part

e

of

t

h

is

ste

p

for

t

he

remaining

frequency

ra

n

ges,

usi

ng

Table

2-5

as

reference

.

(Supp

ressio

n

limit

of

45

decibels

down

corres

po

nd

s

to

4

.5

d

ivisions

on

t

h

e

dis

p

lay

.)

ΝΟΤΕ

All

coil

a

dj

ustments

h

ave

been

a

dj

usted

fo

r

mi

ηί

mum

harmonic

amplitude

at

t

h

e h

ig

h

end

of

t

he

associated

r

a

n

ge

(wo

r

st

case

h

armonic

conditions)

.

C

h

eck

th

at

t

h

e outp

u

t

remains

levele

d

(display

will

blink

if

unlevele

d

condition

occurs)

as

t

h

e

SG

503

FREQ

UEN

CY

V

AR

IA

BLE

control

is

slowly

rotate

d

over

its

associate

d

f

r

eque

n

cy

range

.

REV

.

Α

,

A

PR

.

197

8

SG

503

FREQU

E

NCY

(RANGE

(MHz)

100-250

50-100

25-50

10-25

5-10

2

.5-5

1-2

.5

_

.25-

.5

R

EF~

.05

REV

.

Α

,

A

PR

.

1978

Table

2-5

SG

503__

_



__

FR

E

Q

U

E

N

CY

V

ARIABLE

Typical

Displayed

Count

(Frequency

97

.5-260

.240-_

.5_20

_

.

.,

Ο

49-

.051

vary

slightly

b

etween

instruments

.

Typical H

armonic

Suppression

(2nd

and

all

h

igher

harmonics,

relative

to

fund

amental)

>,40

dB

down

,>

40

dB

d

own

.

.

._

:

._

_-

>40

dB

dowc

-_

.

,>45

dB

down

>-45

dBdown

_>45

dBdown

>45

dB

down

_>45

dBdown

_>45

dBdown

~

__

._

._~45

-

dBdown

-

._~-

'The

minimum

and

maximum

displayed

count

on

each

range

will

h

.

Disconnect

the

cable

from

the

spectrum

analyzer

.

3

.

Check

F

latness

(Peak-to-Peak

A

m

plitude

R

egulation)

α

.

Set

the

SG

503

controls

as

follows

:

FREQUENCY

R

ANGE

(MHz)

switch

to

REF

-

.05

position,

and

t

he

AMPLITUDE

MULTIPLI

E

R

switch

to

Χ

1

.

b

.

Connect

α 2

.4

megohm,

5

ο

/

ο

resistor

across

the

digital

voltmeter

floating

input terminals

.

Connect

the

SG

503

via

b

nc

female-to-GR

a

dapte

r

to

the

input

of

the

peak-to-peak

detector

.

U

se

two

bnc

to

banana-plug-jack

patch

cords

to

connect

the output

of

the

p

eak-to-peak

detector

to

the

floating

input

terminals

on

the

digital

voltmeter

;

maintain

correct

polarity,

HI to

+

and

LO

to

-

.

Set the d

igital

voltmeter

to

the

20

volts

do

range

.

c

.

Slowly

adjust

the

SG

503

OUTPUT

AMPLITUDE

V

OLTS

Ρ

-

Ρ

control

until

the

digital

voltmeter

display

indicates

χ

_

.000

.

Output

amplitude from

the

SG

503

should

be

about

1

.1

to

1

.2

volts

;

this

establishes

α Ο

.

Οο

/

ο

reference

setting

at

.050

megahertz

.

d

.

Slowly

adjust

the

SG

503

FREQUENCY

V

ARIABLE

control

over

its

entire

range

at

each

of

the

frequency

range

positions

of

the

FREQUENCY

R

ANGE

(MHz)

switch

.

S

pecification

and

Performance

Check-SG

503

e

.

Check-the

flatness

d

eviation

from

0

.25

megahertz

to

50 megahertz,

must

be

within

1 ο/

ο

of

the

value

at

.050

megahertz

.

The

total

percentage

deviation

calculation

must

includethe

digital

voltmeter

reading

andthe

calibra

tionfactor

of

th

e

p

ea

k

-to-pea

k

d

etector

.

F

or

example,

α

reading

of

- χ -

.008

volt

on

the d

igital

voltmeter

is

equivalent

to

+0

.8

ο/ο

deviation

.

Ap

p

lying

α

correction

factor

of

-0

.3

ο/

ο

results

in

α

total

p

ercentage

deviation

of

40

.5

ο/ο

.

f

.

Check--the

flatness

d

eviation

from

50

megahertz

to

100

megahertz,

must

be

within

1

ο/ο

of

the value

at

.050

megahertz

.

The

same

calculation

must

be

considered

for

this

d

eviation

reading as

described

in

part

e

of

this

step

.

ΝΟΤΕ

Α

1

ο / ο

total

p

ercentage

d

eviation

ensures

f

latness

specification

w

h

en

t

h

e

SG

503

is

operating

at

the

X

.

1

and

Χ

.01

A

MPL

ITU

D

E

MUL

TI

PL

I

ER

switc

h

positions

.

g

.

Check----the

flatness

deviation

fro

m

100

megahertz

to

250

megahert

z

,

must

be

within

3

ο/ο

of

the

value

at

.050

megahertz

.

The

same

calculation

must

be

considered

for

this

d

eviation

reading as

d

escribed

in

part

e

and

f

of this

step

.

h

.

To

check

t

he

flatness

d

eviation

at

α

h

igher

voltage

output

from

the

SG

503,

insert

two

2

Χ

attenuators

between

the

SG

503 cable

and

t

he

p

eak-to-

p

eak

detector

.

R

epeat

p

art

c

of

this

step

to

obtain

another0

.0%

reference

reading

of

about

4

.7

volts

outp

ut

from

the

SG

503

.

i

.



After

obtaining

the

new

Ο

.

Οο

/ο

reference

indication

on

the

digital

voltmeter,

r

epeat

p

arts

e

and

f

of

this

step

to

check

flatness

d

eviation

for

about

4

.7

volts

output

from

the

SG

503

.

Tolerance

limits

are

the

same

as

in

parts

e an

d

f

of

this

step

.

j

.

Disconnect

all

cables

fro

m

t

he

SG

503

.

This

completes

the

P

erformance

Check

procedure

of

the

SG

503

L

eveled

Sine

W

ave

Generator

.

2-7

I

n

t r

od

uction

T

h

is

ad

ju

stme

n

t

proce

dure

is

to

be

used

to

restore

t

he

SG

503

to

origi

n

al

p

erforma

nce sp

ecifications

.

A

dj

ust-

me

n

t

nee

d notb

e

p

erfo

r

me

d

unless

t

he

instrume

n

t

fails

to

meet

t

he

P

erforma

nce

R

eq

uireme

n

ts

of

t

h

e

Electrical

C

h

a

r

acte

r

istics

listed

i

n

t

heS

p

ecification

section,

or

t

he

P

e

r

formance

C

h

ec

k

ca

nn

ot

be

com

p

lete

d

satisfactorily

.

Com

p

letion

of

all

ad

j

ustme

n

t

ste

ps

in

t

h

is

proce

d

ure

e

nsu

r

es

t

h

at

t

he

i

n

str

u

me

n

t

will

meet

t

h

e

performa

nce

re

q

uireme

n

ts

liste

d

i

n

t

h

e

Specification

section

.

H

owever,

to

fully

ensure

satisfacto

r

y

performance,

it

is

recommend-

e

d

t

h

at

t

he

P

erforma

n

ce

C

hec

k be

perfor

m

ed

after

any

a

dj

ustment

is

made

.

Services

Available

Te

k

tro

n

ix,

I

nc

.

p

rovides

co

m

p

lete

i

n

str

u

me

n

t

re

p

air

a

nd ad

j

ustme

n

t

at

local

F

iel

d

Service

Centers

a

nd

at

t

he

F

acto

r

y

Service

Cente

r

.

Contact

your

local

Te

k

tro

n

ix

F

ield

Office

or

re

p

resentative

for

furt

h

er

informatio

n

.

Desc

r

i

p

tion

Oscillosco

pe

Digital

V

oltmeter

P

owe

r

M

o

d

ule

_

Calibration

Ge

n

erator

Spectru

m

Analyzer

P

e

r

forma

n

ce

B

a

ndwid

t

h

,

dc

to

100

MHz

;

minimum

d

eflection

factor,

1

m

V

/

d

iv

;

sweep

rate,

10

ms/

d

iv

to

1

μ

s/div

;

acc

u

racy,

ωι

t

h

1

η

3%

ο

.

A

mp

litu

d

e

calibration,

50

mV

to

5

V

;

accuracy,

±0

.25%

i

n

to

1

ΜΩ

;

out

put,

square

wave

at

a

pprox-

imately

1

kH

z

.

R

an

ge,

100

kH

z

to

300

MH

z

;

calibrate

d

levels

i

n

deca

d

e

steps

from

--45

db

to

-35

db

;

im

p

edance,

50

Ω

;

acc

u

racy,

li

near

___

.

._

.

.

. . . .

:



__display,

within

10%

ο

. ;

'

Re

qu

ires

TM

500-Se

r

ies

P

owe

r

M

o

du

le

.

REV

.

C,

ΜΑΥ

,

197

8

Ta

b

le

3-1

Test

E

qui

p

m

ent

R

eq

uired

T

he

test

e

q

ui

p

me

n

t

listed

in

Ta

b

le

3-1,

or eq

uivalent,

is

require

d

fo

r

a

dj

ustment

of

t

h

e

SG

503

.

Sp

ecifications

given

for

t

he

test

equi

p

ment

are

t

h

e

minim

u

m

necessary

for

acc

u

rate

a

dj

ustment

and

meas

u

reme

n

t

.

All

test

e

qu

i

p-

ment

is

assume

d

to

be

cor

r

ectly

cali

b

rate

d

and op

erati

ng

wit

h

in

specificatio

n

.

If

ot

h

er

test

eq

ui

p

me

n

t

is

substituted,

co

n

trol

settings

or

calibration

setu

p

may

n

eed

to

be

altere

d

to

meet

t h

e

re

qu irements

of

t

h

ee

qu

i

p

ment

used

.

Α

flexible

plug-in

exte

n

der,

Te

k

tronix

P

art

No

.

067-

0645-02,

is

useful for

tro

u

bles

h

ooti

ng

or

ad

ju

sting

t

he

SG

503

;

however,

t

he

complete

A

d

j

ustment

P

roced

u

re

can

be

performe

d

wit

h

ou

t

use

of

t

he exten

d

er

.

L

IST

OF

TEST

E

Q

U

I

PMEN

T

R

E

QU

I

R

E

M

EN

TS

Sectio

n

3-SG

503

t

Used

throughout

p

roced

-



ΤΕΚΤ

R

ΟΝΙΧ

7603,

7A1

3,

71370

ure

to

p

rovi

d

e

d

isplay

.



Ι

Oscillosco

pe

System

.

V

oltage

meas

u

re

ι

n

e

n

ts

.



TEKTRONIX

D

M

501

Digital

Output

voltage

flat

n

ess



M

ultimeter

.'

check

.

^

ΑΙ

Ι

tests

.



TEKTRONIX

TM

503

ο

r

ΤΜ

504

.

Am

p

litu

de Set ch

ec

k

an

d

TEKTRONIX

P

G

506

Cali

b

ratio

n

ad

ju

stme

n

t

.



~

Ge

n

erator

.'

Bu

ffer

Distortion,

H

armo

η

-

TEKTRONIX

71-12

Spectru

m

is

Supp

ressio

n

ch

eck

.



~

A

n

alyzer

.

A

dj

ustme

n

t--SG

503

Description

Peak-to-Peak Detector

Autotran

sformer

wit

h

ac

voltmeter

Coaxial

cable

P

atc

h cord

(2 re

q

uire

d

)

Coaxial

cable

(2 re

qu

ired)

Atte

n

uator,

2

Χ

(2

re

q

uire

d

)

Tee

connector

Ada

p

ter

Termi

n

atio

n

R

esistor

Screwdriver

Alig

n

me

n

t

tool

Alignme

n

t

tool

3-2

LIST

OF

TEST

EQ

U

IP

M

E

N

T

R

E

QU

I

R

E

M

EN

TS

P

erfo

r

mance

R

equire

m

e

n

ts

F

requency

r

an

ge,

50

Hz

to

500

MHz

;

re

q

uires

1

.2

V

ρ

-

ρ

input

voltage

.

Im peda

n

ce,

50

Ω

;

le

n

gt

h

,

36

inc

h

es

;

connectors, bnc

;

(

p

recisio

n

coaxial

cable)

.

B

nc

to

bana

n

a-

p

lug-

j

ac

k

,

18

i

nch

.

Imp

eda

n

ce,

50

Ω

;

le

n

gt

h

,

42

i

n

c

hes

;

connectors,

bnc

.

Im p

ed

a

n

ce,

50

Ω

;

co

n

-

n

ectors,

bnc

.

Co

nn

ectors,

b

n

c

.

G

R

to

bnc

fe

m

ale

.

Im

p

edance,

50

Ω

co

n

-

n

ectors,

b

n

c

.

F

ixed,

2

.4

ΜΩ

,

1/2

W,

5

ο/ο

.

T

h

ree-inc

h

sh

aft,

3/32

inc

h

b

it

.

F

its

5/64-inc

h

(ID)

h

ex

cores

.

F

ive-i

n

c

h

,

for

slotte

d cores

.

Table

3-1 (cont)

A

p

plication

O

u

tput

voltage

flat

ness

check

.

Capable

of

su p

p

lyi

ng

an

o

u

t-

put voltage

from

90

to

132

V,

ac

;

120

watts

of

p

ower

at

t

he

u

pper

limit

.

P

ower

su pp

ly

check

.

P

rovides

sig

n

al

intercon-

n

ectio

n

.

P

rovi

des

signal

i

n

tercon-

n

ectio

n

.

R

eference

amplitude

ch

ec

k

.

-

--

-----

---------

--

Out

p

ut

voltage

flatness

------ -

-

-

----

Out

p

ut

voltage

flatness

U

se

d

to

a

dju

st

coils

i

n

h

armo

n

ic

s

up

pressio

n

check

.

------

------

U

sed

to

ad

j

ust

coils

i

n

h

ar

m

onic

su

pp

ressio

n

E

xam

p

le

Te

k

tronix

067-0625-00

Calibration

F

ixture

.

Gene

r

al

R

adio

W

10

M

TR3

W

V

ariac

Autotran

sformer

.

Te

k

t

r

o

n

ix

P

art

No

.

012-0482-00

(su

p

plie

d

wit

h

SG

503)

.

Te

k

tro

n

ix

P

art

No

.

012-0090-00

(blac

k

)

012-0091-00

(re

d

)

Te

k

tro

n

ix

P

art

No

.

011-0069-02

.

Te

k

tro

n

ix

P

art

No

.

103-0030-00

.

Te

k

t

r

o

n

ix

P

art

No

.

017-0063-00

.

Te

k

tronix

P

art

No

.

01

1-0049-01

.

T

ek

tronix

P

art

No

.

301-0245-00

.

------

------

-----------

-

Xcelite

R

-3323

.

Te

k

tronix

P

art

No

.

003-0307-00

(

h

andle)

003-0310-00

(i

n

sert)

REV

.

C,

OCT

197

7

Pr

epa

r

ation

α

.

R

emove

t

he

left

a

nd

rig

h

t

si

d

e

covers

of

t

h

e

SG

503

to

gai

n

access

to

t

h

e

component

side

of

t

h

e

circuit

boards

.

Pull

t

he

rear

en d

of

t

he

si

d

e

cover

outward

from

t

he

side

of

t

he

i

n

str

u

ment

(t

h

e

coversnaps

into

place)

.

b

. I

n

stall

t

h

e

SG

503

into

t

he

left

p

ower

m

od

ule

com

p

a

r

tme

n

t,

or

if

a

pp

ro

p

riate,

co

nnect

t

he

SG

503

to

t

h

e

p

ower

mo

d

ule

b

y

means

of

t

h

e

flexi

b

le

plug-in

exten

d

er

.

c

.

Set

t

h

e

power

mod

u

le

for

t

he

li

ne voltage

to

be

a

p

p

lied

(see

p

ower

mo

d

ule

ma

n

ual)

and co

nn

ect

it

to

t

h

e

varia

b

le

autot

r

ansfo

r

mer

;

connect

t

he

autotra

n

sformer

to

t

h

e

line

voltage

sou

r

ce

.

Be

sure

t

h

at

t

he p

ower

switc

h

is

off

.

d

.

I

n

stall

t

he

TM

500-series

eq

ui

p

ment,

i

n

clu

d

i

n

g

t

h

e

SG

503

into

t

h

e

p

ower

mo

d

ule

.

e

.

Co

n

nect

all

test

eq

ui

p

ment

to

α

suitable

li

n

e

voltage

sou

r

ce

.

f

.

'Turn

on

all

test

eq

ui

p

me

n

t

and

allow

at

least

20

minutes

for

t

he eq

ui

p

ment

to

warm

up

an

d

stabilize

.

I

n

itial

Control

Settings

Set

t

he

followi

ng

co

n

trols

during

warm-up

time

:

SG

503

AM

PL

IT

U

D

E

MUL

TI

PL

I

ER



Χ

1

FREQ

U

E

N

CY

V

A

R

IA

BLE



M

i

d

range

F

R

E

QU

E

N

CY

R

ANG

E

(MHz)



REF

-

.05

O

U

T

PU

T

A

MPL

IT

U

DE



5

.0

Oscillosco

pe

Inte

n

sity,

F

ocus



Set

fo

r

well-defined

trace

an

d

n

ormal

brig

h

t

ness

.

Differe

n

tial

Comparator

V

olts/

d

iv



.1

V

V

ariable



fully

cloc

k

wise

(cal)

+Inpu

t



ac

-Input



ac

B

an

dwid

t

h L

imit



5

MHz

Time

Base

Plug-in

Time/Div



.2

ms

V

ariable



(cal

i

n

)

Triggeri

n

g

-i-Slo

pe



selected

M

ode



Ρ

-

Ρ

Auto

Cou

p

ling



ac h

f

re

j

Source



E

xt

P

ositio

n

Set

so

trace

starts

at

left

side of

graticule

.

M

ag n

ifier



Χ

1

The

SG

503

must

be

terminated

into

an

accu

r

ate

50-

o

h

m

loa

d

fo

r

all

c

h

ec

k

s and

adj

ustme

n

ts

.

M

easure

t

h

e

50-oh

m

termination

to

determine

percent

of

e

rr

o

r

.

Α

2

ο/ο

e

rr

o

r

in

termination

(1

o

h

m)

will

cause

am

p

litu

d

e

e

r

rors of

1 ο/ο

.

Fo

r

example,

α

51-o

h

m

termination

ca

u

ses an

amplit

u

de e

rr

o

r

t

h

at

is

1

ο

/ο

high

at

50 k

ilo

h

ertz

.

Ad

ju

stment--SG

503

ADJUSTMENT

PROCEDUR

ΝΟΤΕ

71-12

Spectrum

Analyzer

F

re

quen

cy

Ce

n

ter

selected

Coa

r

se

0000

F

i

n

e

midrange

10

dB

/

d

iv

selecte

d

Triggering

Ρ

-

Ρ

auto

selected

F

ree

R

un

selected

L

evel

midra

n

ge

Slope

-i-

RF

d

B

50

(on

knob)

R

efe

r

ence

level

20

V

ariable

CA

L

(ccw)

Time/Div

S

PE

CT

RUM

V

ariable

i

n

B

ase

L

i

ne

Cli

pp

er

ccw

H

oriz

P

os mi

d

ra

n

ge

V

ideo

F

ilters

30

kH

z

V

i

d

eo

Processor not

selected

AutoPh

ase

L

oc

ked

on

(up)

F

re

qSpa

n

/Div

100

MHz

Hz

R

esolutio

n 3

MHz

(3M)

V

aria

b

le

Cal

V

e

r

t

P

os

midrange

Adjustment---SG

503

σ

υ

υ

1

.

A

d

just

-

α

-22

V

olt

Power

Supply

e

.

Disconnect

the d

igital

voltmeter

.

υc

υσυο

+5

.2

ν

T

E

ST

POINT

F

_

α

.

Connect

the

digital

voltmeter

between

the

--22

V

test

point

on

the

M

ain

circuit

board,

and

chassis

ground

.

See

F

ig

.

3-1 for

voltage

test

p

oint

location

.

b

.

Check-for

α

meter

reading

of --22

volts,

+50

millivolts

.

c

.

Adjust---

---22

V

adj,

R

694,

for

α

meter

r

eading

of

---22

volts

.

See

Fig

.

3-1 for

ad

justme

n

t

location

.

d

.

A

d

just

the

autotransformer

output voltage

from

the

low

limit

to

the

h

igh

limit

as

indicated

i

n

Table

3-2

.

M

eter

r

eading

should not

vary

more

than

±-50

millivolts

.

R

eturn

the

autotransformer

to

the

nominal

line

voltage

setting

.

-22

V

T

EST

POI

NT

R

694

--22

V

AD

J

Fig

.

3-1

.

L

ocation

of

test

p

oints,

L

100,

and

--

β

2

volt

adjustment

.

L



90

V

ac

to

110

Vac

Μ



99

V

ac

to

121

V

ac

108

V

ac

to

132

V

ac

Line F

use

Data



1

.6

Α

slow-blow

2

.

Check

+5

.2

V

olt

Supply

Table

3-2

c

01

3

-

Φ

=_ _=1

αΙ

Ι

=

ΙΙ

ΙΦ

-1

P

OWER

M

ODULE

UNIVERSAL

T

RANSFOR

M

ER

Line



R

egulating

R

anges

Selector

Block

Position



110-Volts

N

ominal



220-Volts

N

ominal

180

V

ac

to

220

V

ac

-

198

V

ac

to

242

V

ac

.

216

V

ac

t_

0264

V

ac

_

0

.8

A

.

slow-blow

_

.-

α

.

Connect

the

d

igital

voltmeter

between

t

he

+5

.2

V

test

point

on the

M

ain

circuit

board,

and

c

hassis

ground

.

See

F

ig

.

3-1

for

voltage

test

point

location

.

b

.

Check--for

meter

reading

of

-+5

.0

to

+5

.4

volts

.

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Tektronix SG 503 User manual

Brand: Tektronix

Model: SG 503

Type: User manual

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