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NI 4070/4072 Calibration Procedure 46 ni.com
46. Call niDMM_CalAdjustOffset with the following parameters:
• Mode =
NIDMM_VAL_4_WIRE_RES
• Range = 10e3
• Input Resistance = NIDMM_VAL_RESISTANCE_NA
47. Call niDMM_CalAdjustMisc with Type set to
NIDMM_EXTCAL_MISCAL_RREF.
48. Call
niDMM_SelfCal to self-calibrate the NI 4070/4072.
49. Output 0 Ω on the calibrator with external sense turned on but with
2-wire compensation turned off.
50. Call
niDMM_CalAdjustOffset with the following parameters:
• Mode =
NIDMM_VAL_4_WIRE_RES
• Range = 10e6
• Input Resistance = NIDMM_VAL_RESISTANCE_NA
51. Call niDMM_CalAdjustOffset with the following parameters:
• Mode =
NIDMM_VAL_4_WIRE_RES
• Range = 1e6
• Input Resistance = NIDMM_VAL_RESISTANCE_NA
52. Call niDMM_CalAdjustOffset with the following parameters:
• Mode =
NIDMM_VAL_4_WIRE_RES
• Range = 1e3
• Input Resistance = NIDMM_VAL_RESISTANCE_NA
53. Call niDMM_CalAdjustOffset with the following parameters:
• Mode =
NIDMM_VAL_4_WIRE_RES
• Range = 100
• Input Resistance = NIDMM_VAL_RESISTANCE_NA
54. Remove the Fluke 5440 cables from the NI 4070/4072, leaving the
other end of the cables connected to the calibrator.
55. Plug in the insulated shorting bar across the HI and LO banana plug
connectors of the NI 4070/4072.
56. Wait two minutes for the thermal EMF to stabilize.
57. Call
niDMM_CalAdjustOffset with the following parameters:
• Mode = NIDMM_VAL_2_WIRE_RES
• Range = 10e6
• Input Resistance = NIDMM_VAL_RESISTANCE_NA