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

Meg Ohm Voltage Source Accuracy Verification

To verify M Voltage Source Accuracy complete the following procedure:
Pushing the TEST button produces a potentially dangerous
voltage, at the Meter output terminals, when the Meter is in the
M function.
1. Connect the DMM, listed in Table 2, to the Meter V and COM input terminals. Set
the DMM to the VDC function.
2. Turn the Meter Rotary Switch to the M 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 V 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.
Step Function
1 M
2 M
3 M
WWarning
Table 7. Meg Ohm Voltage Source Test
Range Measurement Device
250 V Test DMM
500 V Test DMM
1000 V Test DMM with HV Divider
Performance Test
Display Reading
Lower Limit Upper Limit
250 300
500 600
1.000 1.200
MegOhmMeter
11