NI 9212 Calibration Procedure
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© National Instruments
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11
Adjustment
The following performance adjustment procedure describes the sequence of operation required
to adjust the NI 9212.
Voltage Adjustment
Complete the following procedure to adjust the voltage accuracy
of the NI 9212.
1.
Loosen the captive screws and remove the top cover from the NI CAL-9212.
2.
Connect the calibrator to the NI CAL-9212, as shown in Figure 3.
3.
Reinstall the top cover on the NI CAL-9212.
4.
Connect the NI CAL-9212 to the NI 9212, as shown in Figure 2.
5.
Initialize a calibration session on the NI 9212. The default password is
NI
.
6.
Adjust the NI 9212 voltage.
a.
Input the external temperature in degrees Celsius using the set temperature C Series
function.
b.
Call the Get NI 9212 Calibration Adjustment Points function and set the physical
channel according to Table 9 to obtain an array of recommended calibration voltages
for the NI 9212.
c.
On the Fluke 5522A calibrator, lock the voltage range to 3.3 V to reduce loading error.
d.
Set the calibrator to a reference value determined by the array of adjustment points.
e.
Set the calibrator to Operate mode (OPR).
f.
Call and configure the Adjust NI 9212 Calibration function according to Table 9.
g.
Set the calibrator to Standby mode (STBY).
h.
Repeat steps d through g for each calibration voltage in the array.
7.
Remove the NI CAL-9212 from the NI 9212.
8.
Loosen the captive screws and remove the top cover from the NI CAL-9212.
9.
Disconnect the calibrator from the NI CAL-9212.
10. Close the calibration session.
Table 9.
Voltage Adjustment Configuration
Physical Channel
Reference Value
cDAQ1Mod8/ai0:7
A reference value from the array of adjustment points
