Keithley DMM7510, Calibration Manual, Page: 51 / 142

Section 2: Performance verification Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
2-42 DMM7510-905-01 Rev. A / April 2015
8. Press the HOME key.
9. Set the range to
1 Ω
.
10. Source the nominal zero and full-scale resistance values for the 1
Ω to 10 kΩ ranges. Source the
nominal zero for the 100
kΩ range. Refer to the following tables.
11.
For the 100 kΩ range, only verify 0 Ω with Offset Compensation set to
On .
12. Set Offset Compensation to Off .
13. Verify full-
scale 100 kΩ on the 100 kΩ range and 0 and full-scale for the 1 MΩ and 10 MΩ ranges.
14. Verify that the readings are within calculated limits.
When Offset Compensation is set to On, ranges are limited to 1 Ω to 100 kΩ. When Offset
Compensation is set to Off, all ranges (1 Ω to 1 GΩ) are available from all interfaces.
You can use either the front-panel controls or remote interface commands to set measurement
parameters for verification. For calibration, you must use remote interface commands. The example
below is an example of remote interface commands, which will generate event messages.
To do the same steps over the remote interface, send the commands:
dmm.measure.func=dmm.FUNC_4W_RESISTANCE
dmm.measure.offsetcompensation.enable=dmm.ON
dmm.measure.range=1e6
The following warning message is displayed:
1131, Parameter, measure range, expected value from 1 to 100000
Set
dmm.measure.offsetcompensation.enable=dmm.OFF
, and then
dmm.measure.range=1e6
to run without warnings.
Verify that the readings are within calculated limits.
Calculated limits
Use the following values to verify the performance of the Model DMM7510. Actual values depend on
published specifications (see
Calculating resistance reading limits (on page 2-8)).
Range
(Ω)
Nominal calibrator
values
(Ω)
Typical reference
DMM reading
(Ω)
Lower limit
(Ω)
Upper limit
(Ω)
1 0 -5.00E-05 5.00E-05
1.00E+00 1.000 1.00 1.00
10 0.00E+00 -5.00E-05 5.00E-05
1.00E+01 9.900 9.900 9.900
Range
(Ω)
Nominal calibrator
values
(Ω)
Actual calibrator
value
(Ω)
Lower limit
(Ω)
Upper limit
(Ω)
100 0.00E+00 -4.00E-04 4.00E-04
1.00E+02 9.901 9.901 9.901
1000 0.00E+00 -3.00E-03 3.00E-03
1.00E+03 9.902 9.902 1.003