NI 9215 Calibration Procedure
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© National Instruments
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5
Figure 2.
Accuracy Connections for the NI 9215 with BNC
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 voltage to a Test Point value indicated in Table 4.
5.
Acquire and average samples.
a.
Create and configure an AI voltage channel according to Table 2.
b.
Configure the AI voltage channel timing according to Table 3.
c.
Start the task.
d.
Read samples from the NI 9215.
e.
Average the samples for each channel.
f.
Clear the task.
1
Connections when using a calibrator with a guard connection.
2
Connections when using a calibrator with no guard connection.
Table 2.
NI 9215 AI Voltage Channel Configuration
Input Range
Scaled Units
Terminal Configuration
Min
Max
-10
10
Volts
Differential
Table 3.
NI 9215 Timing Configuration
Samples Per Channel
Acquisition Mode
Rate (S/s)
10 k
Finite
100 k
+
–
+
–
+
–
+
–
NI 9215
with BNC
C
a
li
b
r
a
tor
HI
LO
AI0
AI1
AI2
AI
3
+
–
+
–
+
–
+
–
NI 9215
with BNC
C
a
li
b
r
a
tor
HI
LO
G
ua
rd
AI0
AI1
AI2
AI
3
1
2
