A.C VOLTAGE MEASUREMENT.

TM 9-2350-222-20- 1-2

USE OF

OR ME-77 C/U MULTIMETER

(Continued)

VOLTAGE MEASUREMENT.

EXAMPLE: THE METER SHOWN BELOW HAS THE

FOLLOWING READINGS:

The only

the red scale used

when the selector

set

READING

SELECTOR SWITCH

to the AC VOLTS 10 position.

AC VOLTS1O . . . . . . . . . . ..4.0 VOLTS (RED SCALE)

AC VOLTS1OO . . . . . . . . .40 VOLTS (BLACK SCALE)

AC VOLTS 1OOO . . . . . . .400 VOLTS (BLACK SCALE)

AC VOLTS

Read position of needle on

and interpret reading according to selector

NEEDLE

Set

selector switch to the AC VOLTS scale

indicated in your troubleshooting procedure.

WARNING

De-energize/energize circuits as in-

your troubleshooting

dicated

procedure.

- - C A U T I O N -----

you are unsure of the amount of

SELECTOR

I voltage to be measured always start I

SWITCH

the selector switch, at AC

for the first reading.

first reading is less than 100 volts,

set selector switch to AC VOLTS 100.

second reading is less than 10

set selector switch to AC

VOLTS 10 and take third reading.

L- -

. Connect meter probes to circuit under test as indicated

in your troubleshooting procedure.

Read position of needle on

AC VOLTS scale

PROBES

and interpret reading according to the following table:

POSITION OF NEEDLE ON

SELECTOR SWITCH

RED/BLACK AC VOLTS

SETTING

SCALE IS:

READ DIRECTLY ON RED

AC VOLTS 10 (10 VOLTS AC

10 (BLACK SCALE)

MULTIPLIED

1111

VOLTS AC MAX)

MULTIPLIED BY

(B1 ACK

CIRCUIT UNDER TEST

VOLTS AC MAXI

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