NI 4070/4072 Calibration Procedure
60
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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.
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 19.
NI 4070/4072
4-Wire Resistance Verification Tolerances
Calibrator
Resistance
Range
2-Year Tolerance
±
(ppm of Calibrator Resi ppm
of Range)
24-Hour Tolerance
±
(ppm of Calibrator Resi ppm
of Range)
10 M
Ω
10 M
Ω
400 + 10
100 + 2
1 M
Ω
1 M
Ω
90 + 10
20 + 2
100 k
Ω
100 k
Ω
80 + 6
15 + 2
10 k
Ω
10 k
Ω
80 + 3
12 + 2
1 k
Ω
1 k
Ω
80 + 3
12 + 2
100
Ω
100
Ω
80 + 10
15 + 10
0
Ω
10 M
Ω
0 + 10
0 + 2
0
Ω
1 M
Ω
0 + 10
0 + 2
0
Ω
100 k
Ω
0 + 6
0 + 2
Table 18.
NI 4070/4072 AC Voltage Verification Limits (Continued)
Calibrator Output
Range
Coupling
2-Year Limits
Amplitude
Frequency
Lower
Upper
