National Instruments NI 4070/4072 6 1/2-Digit FlexDMM - page 28

NI 4070/4072 Calibration Procedure 28 ni.com
35. Call niDMM_ConfigureMultiPoint with the following parameters:
•Trigger Count = 1
•Sample Count = 10
•Sample Trigger = NIDMM_VAL_IMMEDIATE
•Sample Interval = –1
36. Call niDMM_ReadMultiPoint with the following parameters:
•Maximum Time = NIDMM_VAL_TIME_LIMIT_AUTO
•Array Size = 10
Average the results by summing the returned reading array of the
function and dividing by the returned actual number of points.
Store the result as the 100 Ω range offset.
37. Output 100 MΩ on the calibrator without external sense or 2-wire
compensation.
38. Call niDMM_ConfigureMeasurement with the following
parameters:
•Function = NIDMM_VAL_2_WIRE_RES
•Range = 100e6
•Resolution = 100
39. Call niDMM_Read. Subtract the previously stored 100MΩ range offset
from this measurement. Verify that the result falls between the
tolerances listed in Table18.
40. Output 10 MΩ on the calibrator without external sense or 2-wire
compensation.
41. Call niDMM_ConfigureMeasurement with the following
parameters:
•Function = NIDMM_VAL_2_WIRE_RES
•Range = 10e6
•Resolution = 10
42. Call niDMM_Read. Subtract the previously stored 10MΩ range offset
from this measurement. Verify that the result falls between the
tolerances listed in Table18.
43. Output 1 MΩ on the calibrator without external sense or 2-wire
compensation.
44. Call niDMM_ConfigureMeasurement with the following
parameters:
•Function = NIDMM_VAL_2_WIRE_RES
•Range = 1e6
•Resolution = 1