Equipment
Recommended
Models
Where Used
Minimum Requirements
Double banana plug
with binding posts
Pomona 5405
2-Wire
Resistance
Gold-plated copper
Two insulated low
thermal EMF spade
lugs
Pomona 2305
2-Wire
Resistance
Gold-plated copper
Ammeter
Keysight 3458A
≤1 mA DC
Current
•
≤ 40 ppm uncertainty
(100 µA and 1 mA
ranges)
•
Optional:
–
≤ 160 ppm
uncertainty (10 µA
range)
–
≤ 300 ppm
uncertainty (1 µA
range)
Calibration Procedures
The calibration process includes the following steps:
•
Initial Setup
- Set up the test equipment.
•
Verification Procedures
- Verify the existing operation of the device. This step confirms
whether the device is operating within its specified range prior to calibration.
•
Adjustment Procedures
- Perform an external adjustment of the device that adjusts the
calibration constants with respect to standards of known values.
•
Reverification
- Repeat the verification procedure to ensure that the device is operating
within its specifications after adjustment.
Initial Setup
Note
Ensure that both the calibrator and the PXIe-4081 are warmed up for at least
60 minutes before you begin this procedure.
To set up the test equipment, complete the following steps:
1.
Remove all connections from the four inputs on the PXIe-4081.
2.
Verify that the calibrator has been calibrated within the time limits specified in the
Test
Equipment
section, and that DC zeros calibration has been performed within the last 30
days. Consult the calibrator user documentation for instructions.
PXIe-4081 Calibration Procedure
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© National Instruments
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