DMM800 Series Adjustment Procedures
Handheld and Benchtop Instruments Basic Service
35
Adjustments Part 1
The procedures within this section use the adjustments accessible with the back
case removed from the multimeter.
VR 3
VR 2
VR 1
VR 6
VR 5
VR 4 (DMM850
and DMM870)
Case top
Figure 3: Adjustment locations 1
Perform the following steps to adjust the DC voltage calibration.
1. Set the multimeter dial to V
.
2. Set the calibrator to output 3.0000 VDC.
3. Connect the outputs of the calibrator to the _C V W
and COM input
connectors of the multimeter.
4. Adjust VR5 until the display shows 2.9999 to 3.0001 VDC.
5. Turn the calibrator output off.
6. Disconnect the calibrator from the multimeter.
DC Volts
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