Figure 4-6. Reading the Ohm Scale.

TM 5-6640-214-14

(e) Read the meter (fig. 4-6). If the meter switch is on the "RX1" or "X" 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

X1 or RX1

Read number on scale

X10 or RX10

Multiply reading by 10

X100 or RX100

Multiply reading by 100

X1K or RX1K

Multiply reading by 1000

X10K or RX10K

Multiply reading by 10,000

Remember: K=1000

c. Using the DC Volts Scale (fig. 4-7). The dc volts scale is used to measure all voltage on the equipment except

the 115 ac and 220 ac voltage.

(1) Before using the multimeter to measure dc voltage, do the following steps that match the multimeter you

have:

(a) AN/URM-105. Set meter switch to dc volts range given in TM (To measure 24 volts dc, set switch on

"100 dc VOLTS" range).

Figure 4-6. Reading the Ohm Scale.

1. Set FUNCTION switch to "DIRECT". (RANGE switch can be at any position).

2. Put black lead in "DC/+AC/UHMS" jack.

4-9