Keithley DMM7510 Calibration Manual page 20

Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
100 mV to 1000 V DC voltage verification setup
To check 100 mV to 1000 V DC voltage accuracies, you will:
•
Apply accurate DC voltages from the calibrator to the Model DMM7510 front-panel terminals
•
Verify that the displayed readings fall within specified limits
Use the values in the following tables to verify the performance of the Model DMM7510. Actual values
depend on the published specifications (see
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. Set the calibrator to OPERATE.
2. Set the calibrator output to 0 V.
3. Use a low-thermal cable to connect the Model DMM7510 HI and LO INPUT terminals to the
calibrator HI and LO terminals as shown in the following figure.
4. Allow 5 minutes of settling time.
5. On the Model DMM7510, press the FUNCTION key and select DC voltage.
6. Press the HOME key.
7. Select Range and select 100 mV.
8. Press MENU key. Under Measure, select Settings.
9. Set Input Impedance to Auto.
10. Press the MENU key.
11. Select Calculations.
12. Select Rel Acquire.
13. Source positive and negative full-scale and half-scale voltages and allow for proper settling, as
listed in
14. Select each range on the Model DMM7510, allow for proper settling, and verify the 1 V to 1000 V
ranges according to the following tables.
DMM7510-905-01 Rev. A / April 2015
Figure 1: DC voltage 100 mV to 1000 V verification connections
Verify the DC voltage 100 mV range
Example reading limit calculation
(on page 2-12).
Section 2: Performance verification
(on page 2-8)).
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