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© National Instruments Corporation 49 NI 4070/4072 Calibration Procedure
5. Refer to Table 12 for the appropriate parameter values as you complete
the following steps:
a. Output 0 V on the calibrator.
b. Call
niDMM_CalAdjustOffset with Mode set to
NIDMM_VAL_AC_VOLTS and the remaining parameters as shown
in Table 12 for the current iteration.
c. Call
niDMM_CalAdjustOffset again, changing Mode to
NIDMM_VAL_AC_VOLTS_DCCOUPLED.
6. Repeat step 5 for each of the remaining iterations shown in Table 12.
3 5V 1 NIDMM_VAL_AC_VOLTS 5 NIDMM_VAL_1_MEGAOHM 5
5V 1 NIDMM_VAL_AC_VOLTS_DCCOUPLED 5 NIDMM_VAL_1_MEGAOHM 5
4 50 V 1 NIDMM_VAL_AC_VOLTS 50 NIDMM_VAL_1_MEGAOHM 50
50 V 1 NIDMM_VAL_AC_VOLTS_DCCOUPLED 50 NIDMM_VAL_1_MEGAOHM 50
5 100 V 1 NIDMM_VAL_AC_VOLTS 300 NIDMM_VAL_1_MEGAOHM 100
100 V 1 NIDMM_VAL_AC_VOLTS_DCCOUPLED 300 NIDMM_VAL_1_MEGAOHM 100
Table 12. niDMM_CalAdjustOffset Parameters
Iteration
niDMM_CalAdjustOffset Parameters
Mode Range (V) Input Resistance (Ω)
1 NIDMM_VAL_AC_VOLTS 0.05 NIDMM_VAL_1_MEGAOHM
NIDMM_VAL_AC_VOLTS_DCCOUPLED 0.05 NIDMM_VAL_1_MEGAOHM
2 NIDMM_VAL_AC_VOLTS 0.5 NIDMM_VAL_1_MEGAOHM
NIDMM_VAL_AC_VOLTS_DCCOUPLED 0.5 NIDMM_VAL_1_MEGAOHM
3 NIDMM_VAL_AC_VOLTS 5 NIDMM_VAL_1_MEGAOHM
NIDMM_VAL_AC_VOLTS_DCCOUPLED 5 NIDMM_VAL_1_MEGAOHM
4 NIDMM_VAL_AC_VOLTS 50 NIDMM_VAL_1_MEGAOHM
NIDMM_VAL_AC_VOLTS_DCCOUPLED 50 NIDMM_VAL_1_MEGAOHM
5 NIDMM_VAL_AC_VOLTS 300 NIDMM_VAL_1_MEGAOHM
NIDMM_VAL_AC_VOLTS_DCCOUPLED 300 NIDMM_VAL_1_MEGAOHM
Table 11. niDMM_CalAdjustGain Parameters (Continued)
Iteration
Calibrator Output niDMM_CalAdjustGain Parameters
Amplitude
f
(kHz)
Mode
Range
(V)
Input Resistance
Expected
Value