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NI 9212 Calibration Procedure
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© National Instruments
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9
Figure 4.
CJC Channel Verification Connections
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.
Set the calibrator to 2-Wire Compensation mode.
6.
Set the calibrator output to a Test Point value indicated in Table 8.
7.
Set the calibrator to Operate mode (OPR).
8.
Wait at least 15 seconds for the NI 9212 to settle before proceeding to the next step.
9.
Acquire and average samples.
a.
Create and configure an AI voltage channel on the NI 9212 according to Table 6.
b.
Configure the AI voltage channel timing according to Table 7.
Table 6.
NI 9212 CJC Channel Configuration
Physical Channels
Input Range (V)
Scaled
Units
Terminal
Configuration
Min
Max
cDAQ1Mod8/_cjtemp
x
-2.5
2.5
Volts
RSE
Table 7.
NI 9212 CJC Channel Timing Configuration
ADC Timing Mode
Sample
Mode
Samples to
Read
Rate (S/s)
Timeout (s)
High Resolution
Finite
20
1.8
30
Best 50 Hz Rejection
80
7.1
Best 60 Hz Rejection
100
8.3
High Speed
1,000
95
C
a
li
b
r
a
tor
LO
HI
S
EN
S
E
LO
S
EN
S
E
HI
NI CAL-9212
CJC
x
Inp
u
t –
CJC
x
S
EN
S
E +
CJC
x
S
EN
S
E –
GROUND LUG
CJC
x
Inp
u
t +