Fluke 1520 - Meg Ohm Voltage Source Accuracy Verification; Meg Ohm Voltage Source Test

MegOhmMeter
Performance Test
11
Meg Ohm Voltage Source Accuracy Verification
To verify MΩ Voltage Source Accuracy complete the following procedure:
WWarning
Pushing the TEST button produces a potentially dangerous
voltage, at the Meter output terminals, when the Meter is in the
MΩ function.
1. Connect the DMM, listed in Table 2, to the Meter VΩ and COM input terminals. Set
the DMM to the VDC function.
2. Turn the Meter Rotary Switch to the MΩ function and range listed in Table 7, step 1.
3. Press and hold the TEST button until the Meter reading settles to its final value.
4. Compare the DMM reading with the display reading limits of Table 7.
5. Release the TEST button.
6. Repeat the above process for Table 7, Step 2.
7. Disconnect the DMM from the Meter and connect the HV Divider to the DMM.
8. Connect the DMM, with HV Divider, to the Meter VΩ and COM input terminals.
9. Press and hold the TEST button until the Meter reading settles to its final value.
10. Compare the DMM display reading with the display reading limits of Table 7,
step 3.
Table 7. Meg Ohm Voltage Source Test
Display Reading
Step Function Range Measurement Device
Lower Limit Upper Limit
1MΩ 250 V Test DMM 250 300
2MΩ 500 V Test DMM 500 600
3MΩ 1000 V Test DMM with HV Divider 1.000 1.200