IFR FM/AM-1200A

IFR FM/AM-1200A

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To

use

the

digital

voltmeter

perform

the

following

steps:

STEP

PROCEDURE

!CAUTION\

DO

NOT

EXCEED

100

VDC

OR

100

VRMS

INPUT

OR

DAMAGE

TO

THE

FM/AM-1200S/A

MAY

RESULT.

1.

Connect

unknown

signal

to

SCOPE/DVM

Connector

(20).

2.

Select

digital

voltmeter

function

by

pressing:

,

"''

1

i

[JilL

1 i

llliiiJ

L!...!:l_~_2_j

~c_

3.

Select

AC

or

DC

mode

by

pressing:

ff]

for

the

desired

display

on

the

VFD

(37).

4.

Read

voltage

level

of

input

signal

on

VFD

(37).

The

input

signal

may

also

be

displayed

on

the

CRT

Display

(31)

at

the

same

time

as

a

voltage

reading

is

being

taken.

Refer

to

paragraph

4-8

for

Oscillo-

scope

Operation.

~~AUTION\

WHEN

TAKING

LOW

VOLTAGE

MEASUREMENTS

(10

mV

OR

LESS)

USING

THE

DVM,

PLACE

THE

VERTICAL

ATTENUATOR

SELECTOR

CONTROL

(24)

TO

ANY

''kHz/%X10''

POSITION

TO

DISABLE.

5-5

05

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