Resistance Verification - Keithley DMM7510 Calibration Manual

Section 2: Performance verification
Range Nominal calibrator
value
(Ω)
100 0
100.0000
1000 0
1000.000
1.0E+04 0
1900.000

Resistance verification

To check the resistance function, you will:
•
Use shielded, Teflon-insulated or equivalent cables in a 4-wire configuration
•
Characterize the calibrator 1 Ω, 10 Ω, and 909 MΩ nominal values with external reference DMM
•
Verify that the displayed readings fall within specified limits
•
For the 1 Ω, 10 Ω, and 1 GΩ ranges, verify accuracy from reference DMM readings
•
For the 100 Ω to 100 MΩ ranges, verify accuracy from actual calibrator source values
Characterize the calibrator and 909 MΩ resistor
If not already done, complete the procedure for characterizing the calibrator for dry circuit verification.
Characterize the calibrator for 1 Ω and 10 Ω
Refer to
To characterize the resistor:
1. Make connections between the resistor and the reference DMM as shown in the figure below.
2-40
Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
Actual calibrator
value
(Ω)
9.9996340E01
9.9998410E+02
1.8999910E+03
Figure 4: 909 MΩ resistor characterization
Lower limit
(Ω)
-8.00E-03
9.997934E+01
-8.00E-02
9.997241E+02
-8.00E-01
1.898583E+03
(on page 2-38).
DMM7510-905-01 Rev. A / April 2015
Upper limit
(Ω)
8.00E-03
1.000133E+02
8.00E-02
1.000244E+03
8.00E-01
1.901399E+03