Keithley DMM7510 Calibration Manual

Section
2: Performance verification Model DMM7510 7½ Digit Graphical Sampling Multimeter
Calibration Manual
2-40 DMM7510-905-01 Rev. A / April 2015
Range Nominal calibrator
value
(Ω)
Actual calibrator
value
(Ω)
Lower limit
(Ω)
Upper limit
(Ω)
100
0
-8.00E-03
8.00E-03
100.0000
9.9996340E01
9.997934E+01
1.000133E+02
1000
0
-8.00E-02
8.00E-02
1000.000
9.9998410E+02
9.997241E+02
1.000244E+03
1.0E+04
0
-8.00E-01
8.00E-01
1900.000
1.8999910E+03
1.898583E+03
1.901399E+03
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.
Refer to Characterize the calibrator for 1 Ω and 10 Ω (on page 2-38
).
To characterize the resistor:
1. Make connections between the resistor and the reference DMM as shown in the figure below.
Figure 4: 909 MΩ resistor characterization

Keithley DMM7510 Specifications

General

Brand	Keithley
Model	DMM7510
Category	Multimeter
Language	English