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NI 9203 Calibration Procedure
Accuracy Verification
Complete the following procedure to determine the As-Found status of the NI 9203.
1. Set the calibrator to Standby mode (STBY).
2. Connect the NI 9203 to the calibrator. Refer to Figure 1 for a connection diagram.
Figure 1.
Accuracy Connections for the NI 9203
Note
If the calibrator outputs are truly floating, connect the negative output to a
quiet earth ground as well as COM to give the entire system a ground reference.
3. Set the calibrator to Operate mode (OPR).
4. Set the calibrator current to a Test Point value indicated in Table 4.
5. Acquire and average samples.
a. Create and configure an AI current channel according to Table 2.
b. Configure the AI current channel timing according to Table 3.
1
Connections when using a calibrator with a guard connection.
2
Connections when using a calibrator with no guard connection.
Table 2.
NI 9203 AI Voltage Channel Configuration
Input
Range
Input Range
Scaled
Units
Terminal Configuration
Min
Max
Unipolar
0.000
0.020
Amps
RSE
Bipolar
-0.020
0.020
Amps
RSE
Table 3.
NI 9203 Timing Configuration
Samples Per Channel
Acquisition Mode
Rate (S/s)
10k
Finite
20k
NI 920
3
C
a
li
b
r
a
tor
COM
AI
x
HI
LO
G
ua
rd
NI 920
3
C
a
li
b
r
a
tor
COM
AI
x
HI
LO
1
2
