6½-Digit Multimeter with Scanning Calibration and Adjustment Manual Section 2: Perfo
DMM6500-905-01 Rev. E June 2021 2-7
Verify dc voltage accuracy for the 100 mV to 1000 V ranges
To verify 100 mV to 1000 V dc voltage accuracies, you will:
• Apply accurate dc voltages from the calibrator to the DMM6500 front-panel terminals.
• Verify that the displayed readings are within specified limits.
• Use the values in the tables following the steps below to verify the performance of the DMM6500.
Actual values depend on the published specifications (see Example reading limit calculation
(on
page 2-4)).
Use shielded low-thermal connections when testing the 100 mV and 1 V ranges to avoid errors
caused by noise or thermal effects. Connect the shield to the output LO terminal of the calibrator.
To verify dc voltage accuracy:
1. Use a low-thermal cable to connect the DMM6500 HI and LO INPUT terminals to the calibrator HI
and LO terminals as shown in the following figure.
Figure 1: DC voltage 100 mV to 1000 V ranges verification connections
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