National Instruments NI 4070/4072 6 1/2-Digit FlexDMM ユーザーズマニュアル
© National Instruments Corporation
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NI 4070/4072 Calibration Procedure
Frequency
Capacitance and Inductance
Note
Because the actual capacitance verification values can differ from the following
values, Table 22 provides tolerances that correspond to the NI 4072 accuracy
specifications
specifications
Table 21. Frequency Limits
NI 6608 Output Frequency
2-Year Limits
Lower
Upper
1 Hz
0.9999 Hz
1.0001 Hz
20 kHz
19.998 kHz
20.002 kHz
500 kHz
499.95 kHz
500.05 kHz
Table 22. NI 4072 Capacitance and Inductance Verification Tolerances
Verification Values
Range
2-Year Tolerances
% of Reading
% of Range
0 pF
300 pF
0
±0.5
0 uH
10 uH
0
±1
270 pF
300 pF
±0.15
±0.1
1 nF
1 nF
±0.15
±0.1
1 nF
10 nF
±0.15
±0.1
100 nF
100 nF
±0.15
±0.1
100 nF
1 uF
±0.18
±0.1
10 uF
10 uF
±0.18
±0.1
10 uF
100 uF
±0.18
±0.1
1,000 uF
1,000 uF
±0.18
±0.1
1,000 uF
10,000 uF
±0.18
±0.1