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National Instruments Corporation
61
NI PXI-4070 Calibration Procedure
2-Wire Resistance
Note
Tolerances are provided for 2-wire resistance instead of absolute limits because the
limits depend on the actual resistance value output by your calibrator.
0 Ω
1 M
Ω
±10 ppm
±2 ppm
0
Ω
100 k
Ω
±6 ppm
±2 ppm
0
Ω
10 k
Ω
±3 ppm
±2 ppm
0
Ω
1 k
Ω
±3 ppm
±2 ppm
0
Ω
100
Ω
±10 ppm
±10 ppm
Table 14.
NI 4070 2-Wire Resistance Verification Tolerances
Calibrator
Resistance
Range
2-Year Tolerance
(ppm of Range)
24-Hour Tolerance
(ppm of Range)
100 M
Ω
100 M
Ω
±2040 ppm
±920 ppm
10 M
Ω
10 M
Ω
±410 ppm
±102 ppm
1 M
Ω
1 M
Ω
±100 ppm
±22 ppm
100 k
Ω
100 k
Ω
±86 ppm
±14 ppm
10 k
Ω
10 k
Ω
±83 ppm
±14 ppm
1 k
Ω
1 k
Ω
±83 ppm
±14 ppm
100
Ω
100
Ω
±90 ppm
±25 ppm
Table 13.
NI 4070 4-Wire Resistance Verification Tolerances (Continued)
Calibrator
Resistance
Range
2-Year Tolerance
(ppm of Range)
24-Hour Tolerance
(ppm of Range)