NI 4070/4072 Calibration Procedure
58
ni.com
Verification Limits
This section includes the verification limits for DC voltage, AC voltage,
4-wire resistance, 2-wire resistance, DC current, AC current, and frequency
for the NI 4070/4072
,
and the verification tolerances for capacitance on the
NI 4072. Compare these limits to the results you obtain in the
Note
Use the values in the
24-Hour Limits
column for a post-adjustment verification
only.
Otherwise, use the values in the
2-Year Limits
column.
Limits in the following tables are based upon the February 2007 edition of the
NI 4070/4072 Specifications
. Refer to the most recent NI 4070/4072 specifications online
at
ni.com/manuals
. If a more recent edition of the specifications is available, recalculate
the limits based upon the latest specifications.
DC Voltage
Table 17.
NI 4070/4072 DC Voltage Verification Limits
Calibrator
Amplitude
Range
Input Resistance
2-Year Limits
24-Hour Limits
Lower
Upper
Lower
Upper
0 V
1 V
>10 G
Ω
/10 M
Ω
–6
μ
V
6
μ
V
–2
μ
V
2
μ
V
0 V
10 V
>10 G
Ω
/10 M
Ω
–60
μ
V
60
μ
V
–20
μ
V
20
μ
V
0 V
100 V
10 M
Ω
–600
μ
V
600
μ
V
–200
μ
V
200
μ
V
0 V
300 V
10 M
Ω
–6 mV
6 mV
–1.8 mV
1.8 mV
100 mV
100 mV
>10 G
Ω
/10 M
Ω
0.099994 V
0.100006 V
0.099998 V
0.100002 V
–100 mV
100 mV
>10 G
Ω
/10 M
Ω
–0.100006 V
–0.099994 V
–0.100002 V
–0.099998 V
1 V
1 V
>10 G
Ω
/10 M
Ω
0.999969 V
1.000031 V
0.999992 V
1.000008 V
–1 V
1 V
>10 G
Ω
/10 M
Ω
–1.000031 V
–0.999969 V
–1.000008 V
–0.999992 V
10 V
10 V
>10 G
Ω
/10 M
Ω
9.99969 V
10.00031 V
9.99994 V
10.00006 V
–10 V
10 V
>10 G
Ω
/10 M
Ω
–10.00031 V
–9.99969 V
–10.00006 V
–9.99994 V
100 V
100 V
10 M
Ω
99.9959 V
100.0041 V
99.9992 V
100.0008 V
–100 V
100 V
10 M
Ω
–100.0041 V
–99.9959 V
–100.0008 V
–99.9992 V
300 V
300 V
10 M
Ω
299.9835 V
300.0165 V
299.9964 V
300.0036 V
–300 V
300 V
10 M
Ω
–300.0165 V
–299.9835 V
–300.0036 V
–299.9964 V