Figure 4-7. DC Volts Scale (AN/URM-105) (Sheet 1 of 3).

TM 5-6640-214-14

Figure 4-7. DC Volts Scale (AN/URM-105) (Sheet 1 of 3).

3. To measure 24 volts dc, plug red lead into "50V" jack on left side of meter. (If measuring less

than 10 volts dc, use "10V" jack. If measuring less than 2.5 volts dc use 2.5V jack.)

(b) Simpson 160.

1. Connect black lead to "COM-" jack.

2. Connect red lead to "+" jack.

3. To measure 24 volts dc, set selector switch to "V/DC 50" position. (If measuring less than 10

volts dc, set selector switch to "V/DC 10" position. If measuring less than 2.5 volts, dc, set selector switch to "V/DC 2.5"

position).

4. Set polarity reversing switch to the "+dc" position.

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