TM 10-3930-641-20
(Sheet 6 of 8)
ELECTRICAL TEST EQUIPMENT (CONT)
OHMS SCALE (CONT)
MEASURING RESISTANCE
E Read the meter. If the meter switch is on the RXI or Xl range,
the reading is taken directly from the top scale. If the meter
switch is on a different range, multiply the reading on the scale
according to the table below.
OHMS SWITCH SETTING
SCALE
Xl or RX1
Read number on scale
X10 or RX10
Failure to do the following step can damage the rnultimeter.
Multiply reading by 10
X100 or RX100
Multiply reading by 100
X1K or RX1K
Multiply reading by 1000
X10K or RX10K
B Disconnect the circuit being tested. To be safe, disconnect the
Multiply reading by 10,000
battery ground strap.
NOTE
Zero the meter every time you change ranges.
C If the test calls for an ohms range different than RX1 or Xl, set
the selector switch to that range (like RX10 or X10).
D Connect the probes across the circuit or item to be measured.
The example shows measuring the resistance of one wire in a
three-wire cable.
Go on to Sheet 7
2-55