Verifying Ac Current - National Instruments PXI-4070 Manual

Verifying AC Current

Caution Step 2 must be performed correctly to avoid shorting on unconnected spade lugs.
NI PXI-4070 Calibration Procedure
You have completed verifying the DC current of the NI 4070. Select one of
the following options:
• If you want to continue verifying other modes, go to the Verifying AC
Current section.
• If you do not want to verify other modes and you are performing a
post-adjustment verification, go to the
Procedures section.
• If you do not want to verify any additional modes and you are
performing a pre-adjustment verification, call
the session.
To verify the AC current of the NI 4070, complete the following steps:
1. Reset the calibrator.
2. Connect the calibration cable assembly with the connector block
plugged into the NI 4070 and with the spade lugs connected to the
appropriate binding posts on the calibrator, as described in Figure 3
and Table 1.
Connect a banana-to-banana cable or a wire (AWG ≤ 22) between the
3.
AUX CURRENT binding post and the SENSE HI binding post of the
calibrator.
4. Call
niDMM_reset
5. Call
niDMM_ConfigureMeasurement
parameters:
• Function =
NIDMM_VAL_AC_CURRENT
• Range =
0.01
• Resolution =
6. Call
niDMM_Read
applying current.
7. Output 1 mA at 1 kHz on the calibrator with the current output set
to .
AUX
8. Call
niDMM_Read
limits listed in Table 16.
9. Output 10 mA at 1 kHz on the calibrator with the current output set
to .
AUX
10. Call
niDMM_Read
limits listed in Table 16.
Completing the Adjustment
to reset the NI 4070 to a known state.
10e–9
to configure the NI 4070 for a current mode before
. Verify that this measurement falls between the
. Verify that this measurement falls between the
36
to close
niDMM_close
with the following
ni.com