Preliminary Check; How To Use The Push-To-Measure Button - AEMC 1000N User Manual

Megohmmeter Model 1000N/1100N
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When the PUSH-TO-TEST button is in the OFF position, the pointer
should be on zero of the voltmeter scale, and on three of the GΩ scale. If
it is not, use the mechanical zero adjust on the front of the instrument.
• Detach the leads from the instrument.
• Press the PUSH-TO-TEST button into the ON position. The pointer
should deflect completely to the far right of the scale. The green neon
"Bat." lamp should light up.
Note: Ensure that the "Bat." light (green) does not go out at any point
during the testing. If the light does not illuminate, stop the test and
change the batteries before continuing.
Verify that NO VOLTAGE is present on the circuit to be tested.
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OFF: PUSH-TO-TEST button is in the raised position. This is for
measurement of AC or DC voltages (safety check).
Note: Do not depress the PUSH-TO-TEST button if voltage is present.
ON: PUSH-TO-TEST button is depressed and held down for the duration
of the test. This is for insulation resistance tests.
LOCK-IN: PUSH-TO-TEST button is depressed and turned clockwise
90° to lock into position. This is for insulation resistance tests of long
duration such as the Time Resistance or Absorption Test.
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