VOLTAGE CHECKS (DC)

TM55-1730-228-13&P

3-11. VOLTAGE CHECKS (DC) (Figure 3-13)

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a. Determine exactly what is to be checked, where the meter leads will be connected, and what voltage to expect.

b. Resistance of poor wiring, connections, and switch contacts can causrors when voltages are measured.

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c. Plug the voltmeter leads into the multimeter lacks. Plug the black lead into the lack marked COMMON and the

red lead into the jack marked +.

Set the voltage range selector switch to a range higher than the expected voltage. Determine exactly

which row of figures you will read.

Quick Reference

DC VOLTAGE CHECK

(1) SET SCALE SELECTOR ON +DC.

(2) SET RANGE SELECTOR SWITCH ON A CALE HIGHER THAN KNOWN CIRCUIT VOLTAGE.

(3) CONNECT NEGATIVE LEAD (BLACK) TO SPEMS FRAME.

(4) TOUCH POSITIVE LEAD (RED) TO TERMINAL POST OF BATTERY.

NEEDLE SHOULD MOVE

TOWARD CENTER OF SCALE TO INDICATE VOLTAGE.

Figure 3-13. DC Voltage Check With Multimeter.

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