Keithley DMM6500 Manual page 36

Section 2: Performance verification
To verify 4-wire resistance accuracy:
1. Connect the DMM6500 INPUT and SENSE terminals to the calibrator as shown in the following
figure.
2. Set the calibrator for 4-wire resistance with external sense on.
3. On the DMM6500, press the FUNCTION key and select 4W Res.
4. Press the MENU key.
5. Under Measure, select Settings.
6. Set Offset Compensation On.
7. Verify that Open Lead Detector is Off.
8. On the home screen, select the button next to Range and select 1 Ω.
9. Source the nominal zero and full-scale resistance values for the 1 Ω to 10 kΩ ranges. Source the
nominal zero value for the 100 kΩ range. Refer to the tables in
10. For the 100 kΩ range, only verify 0 Ω with Offset Compensation set to On.
11. Set Offset Compensation to Off.
12. Verify full-scale 100 kΩ on the 100 kΩ range and 0 and full-scale for the 1 MΩ and 10 MΩ ranges.
13. Verify that the readings are within calculated limits.
When Offset Compensation is set to On, ranges are limited to 1 Ω to 10 kΩ. When Offset
Compensation is set to Off, all ranges (1 Ω to 100 MΩ) are available from all interfaces.
2-26
DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
Figure 9: Connections for 4-wire resistance accuracy verification
Calculated limits (on page 2-27).
DMM6500-905-01 Rev. E June 2021