©
National Instruments Corporation
57
NI PXI-4070 Calibration Procedure
Completing the Adjustment Procedures
To complete the adjustment procedure for the NI 4070 and close the
session, call
niDMM_CloseExtCal
with the following parameter:
•
Action
=
NIDMM_EXTCAL_ACTION_SAVE
if the results of the
calibration were satisfactory and you want to save the new calibration
coefficients to the EEPROM.
Otherwise,
•
Action
=
NIDMM_EXTCAL_ACTION_ABORT
if the results of the
calibration were unsatisfactory and you want to restore the original
calibration coefficients to the EEPROM.
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. Compare these limits to the results you obtain in the
section.
DC Voltage
Table 11.
NI 4070 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
