1520
Calibration Manual
10
WWarning
Pushing the TEST button produces a potentially dangerous
voltage, at the Meter output terminals, when the Meter is in the
MΩ function.
1. Turn the Meter Rotary Switch to the MΩ function and set the Meter range as listed in
Table 6.
2. Apply the calibrator output values listed in step 1 of Table 6.
3. Press and hold the Meter TEST button until the Meter display reading settles to its
final value.
4. Compare the Meter displayed reading with the display reading limits of Table 6.
5. Release the TEST button.
6. Repeat the above process for all remaining steps in Table 6.
Table 6. Meg Ohm Test
Display Reading
Step Function Range Calibrator Output
Lower Limit Upper Limit
1MΩ 250 V 250 kΩ 243 257
2MΩ 500 V 250 kΩ 243 257
3MΩ 1000 V 250 kΩ 243 257
4MΩ 250 V 500 kΩ 488 512
5MΩ 500 V 500 kΩ 488 512
6MΩ 1000 V 500 kΩ 488 512
7MΩ 250 V 1 MΩ 0.978 1.022
8MΩ 500 V 1 MΩ 0.978 1.022
9MΩ 1000 V 1 MΩ 0.978 1.022
10 MΩ 250 V 80 MΩ 78.2 81.8
11 MΩ 500 V 80 MΩ 78.2 81.8
12 MΩ 1000 V 80 MΩ 78.2 81.8
13 MΩ 250 V Open >1000 >1000
14 MΩ 500 V Open >2000 >2000
15 MΩ 1000 V Open >4000 >4000
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