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 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:
READING
SELECTOR SWITCH
Read position of needle on black DC VOLTS scale
DC
. . . . . . . . . . . . . . . . ..0.4 VOLTS
and interpret reading according to selector switch
DC VOLTS 10 . . . . . . . . . . . . . . . . . ..4 VOLTS
DC VOLTS 100 . . . . . . . . . . . . . . . ..4OVOLTS
DC VOLTS 1000 . . . . . . . . . . . . . ..400 VOLTS
q Set
selector switch to the DC VOLTS scale
indicated in your troubleshooting procedure.
\
WARNING
De-energize/energize circuits as in-
dicated in your troubleshooting
procedure.
---
--
r
I
you are unsure of the amount of
, voltage to be measured always start
, with selector switch at DC VOLTS
1000 for the first reading. If first
I reading is less than 100 volts, set
selector switch to DC VOLTS 100. If
second reading is less than 10
o
set selector switch to DC VOLTS 10
------ ---- J
and take third reading, etc.
SWITCH
r
q Connect
meter probes to circuit under test as indicated
in your troubleshooting procedure.
q Read
position of needle on black DC VOLTS scale and
interpret reading according to the following table:
SELECTOR SWITCH
POSITION OF NEEDLE ON
BLACK DC VOLTS SCALE IS:
SETTING
DC VOLTS (1 VOLTS DC MAX)
DIVIDED BY 10
READ DIREcTLY
SCALE
DC VOLTS 10 (10 VOLTS DC MAX)
BY
DC VOLTS 100
VOLTS DC
DC VOLTS
VOLTS DC MAX)
MULTIPLIED BY
METER
PROBES
CIRCUIT UNDER TEST
4-46
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