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National Instruments
11
SCXI-1104/C Calibration Procedure
13. Repeat steps 4 through 12 for the remaining channels.
14. Repeat steps 3 through 13 for all test points in Tables 3.
You have finished verifying the analog input accuracy of the SCXI-1104/C.
Adjustment Procedure
The adjustment procedure adjusts the gain and offset calibration constants
on the SCXI-1104/C. Complete the
prior to the
adjustment procedure to determine the pre-calibration accuracy and
whether adjustments are necessary.
Complete the following steps to adjust the gain and offset of the
SCXI-1104/C:
1.
Connect the calibrator output to pins CH- and CH+ for all channels.
Refer to the
SCXI-1300/1301 Terminal Block Installation Guide
for
connection instructions. If you are not using the recommended
SCXI-1300, refer to Table 4 for the front signal pin assignments of the
SCXI-1104/C. If the calibration signal source is floating, connect CH-
to the SCXI chassis ground using the ground lug available on the SCXI
terminal block.
2.
Connect the DMM to MCH0+ and MCH0- (pin 3 and 4) on the rear
connector. Refer to Table 5 for the rear signal pin assignments of the
SCXI-1104/C.
Note
You can access these pins using a 50-pin cable connected to an SCXI-1349.
3.
Start an external calibration session using the
DAQmx Initialize
External Calibration VI.
Note
Throughout the adjustment procedure, refer to the function call parameters for the
LabVIEW input values.
LabVIEW Block Diagram
NI-DAQmx Function Call
Call
DAQmxInitExtCal
with the following
parameters:
deviceName
:
"SC1Mod1"
password
:
"NI"
calHandle
:
&calHandle
