Keithley DMM6500 Manual page 44

Section 2: Performance verification
Zero verify the DMM6500:
1. On the calibrator, select the OPR/STBY key. Make sure that the front panel displays STANDBY.
2. Set the ranges to 100 mA.
3. Verify the DMM6500 zero reading for each range.
4. Source dc current from the following table. For each setting, be sure that the reading is within
stated limits.
5. Repeat these steps for the 1 A and 3 A ranges.
Verify dc current 100 mA range
Description
Full scale (+)
Half scale (+)
Half scale (–)
Full scale (–)
Verify dc current 1 A range
Description
Full scale (+)
Half scale (+)
Half scale (–)
Full scale (–)
Verify dc current 3 A range
Description
*Full scale (+)
Half scale (+)
Half scale (–)
*Full scale (–)
* The 3 A range full-scale test points are limited to 2 A in this table because of the accuracy
limitations of Fluke Models 57xxA and 5725A series calibrators at currents above 2.2 A.
Verify dc current 10 A range
See DC current 10 A range verification
2-34
DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
Calibrator Lower limit
setpoint (A)
100 99.975
50 49.985
-50 -50.015
-100 -100.025
Calibrator Lower limit
setpoint (A)
1 0.99955
0.5 0.49975
–0.5 -0.50025
–1 -1.00045
Calibrator Lower limit
setpoint (A)
2 1.99888
1.5 1.49913
–1.5 –1.50087
–2 –2.00112
(on page 2-47) under
Upper limit
100.025
50.015
-49.985
-99.975
Upper limit
1.00045
0.50025
-0.49975
-0.99955
Upper limit
2.00112
1.50087
–1.49913
–1.99888
Rear-panel verification (on page 2-46).
DMM6500-905-01 Rev. E June 2021