©
National Instruments Corporation
59
NI PXI-4070 Calibration Procedure
4-Wire Resistance
Note
Tolerances are provided for 4-wire resistance instead of absolute limits because the
limits depend on the actual resistance value output by your calibrator.
5 V
300 kHz
5 V
AC/DC
4.8475 V
5.1525 V
50 V
30 Hz
50 V
DC
49.945 V
50.055 V
50 V
50 Hz
50 V
AC/DC
49.965 V
50.035 V
50 V
1 kHz
50 V
AC/DC
49.965 V
50.035 V
50 V
20 kHz
50 V
AC/DC
49.965 V
50.035 V
50 V
50 kHz
50 V
AC/DC
49.945 V
50.055 V
50 V
100 kHz
50 V
AC/DC
49.74 V
50.26 V
50 V
300 kHz
50 V
AC/DC
48.475 V
51.525 V
219 V
30 Hz
300 V
DC
218.751 V
219.249 V
219 V
50 Hz
300 V
AC/DC
218.8305 V
219.1695 V
219 V
1 kHz
300 V
AC/DC
218.8305 V
219.1695 V
219 V
20 kHz
300 V
AC/DC
218.8305 V
219.1695 V
219 V
50 kHz
300 V
AC/DC
218.7429 V
219.2571 V
219 V
100 kHz
300 V
AC/DC
217.845 V
220.155 V
70 V
300 kHz
300 V
AC/DC
67.75 V
72.25 V
Table 13.
NI 4070 4-Wire Resistance Verification Tolerances
Calibrator
Resistance
Range
2-Year Tolerance
(ppm of Range)
24-Hour Tolerance
(ppm of Range)
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
Table 12.
NI 4070 AC Voltage Verification Limits (Continued)
Calibrator Output
Range
Coupling
2-Year Limits
Amplitude
Frequency
Lower
Upper
