PXIe-4309 Calibration Procedure
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© National Instruments
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9
DC Voltage Accuracy
Complete the following steps to verify the DC voltage accuracy:
1.
Connect the calibrator output to the input channel being tested. Depending on the terminal
block used for verification, refer to step a or b for specifics about how to connect the
calibrator output to the PXIe-4309 input.
Note
Keep the test lead set loop area as small as possible.
a.
CAL-4309
. Use a low thermal EMF banana-to-banana test lead set to connect the
input of the CAL-4309 to the calibrator output as shown in Figure 3. This connects all
32 input channels of the PXIe-4309 to the calibrator output.
i.
Attach the CAL-4309 terminal block to the PXIe-4309 module.
ii.
Tighten the mounting screw at the top of the terminal block to secure the terminal
block to the module.
iii. Wait ten minutes for the thermal EMF to stabilize.
iv. Use a low thermal EMF banana-to-banana test lead set to connect the input of the
CAL-4309 to the calibrator output as shown in Figure 3.
v.
Wait two minutes for the thermal EMF to stabilize.
Table 3.
AI Setup for DC Voltage Verification
Configuration
Value
Physical Channels
dev1/aix
, where
x
refers to the channel number.
Input Range
Input range from Table 2.
Input Terminal Configuration
Differential
Rate
10 S/s
Sample Mode
Finite
Samples per Channel
11
Auto Zero
Auto Zero configuration from Table 2.
Chopping
Chopping configuration from Table 2.
