PXIe-4302/4303 and TB-4302C Calibration Procedure
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© National Instruments Corporation
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The following performance verification procedure describes the sequence of operations to verify
the shunt values of the TB-4302C.
1.
Open the TB-4302C enclosure.
2.
Configure the PXI-4071 for 4-wire resistance measurement mode as shown in Table 10.
3.
Locate R10 on the TB-4302C. Refer to Figure 3.
4.
Hold the HI and HI_SENSE probes of the PXI-4071 to one pad of R10 and hold the LO and
LO_SENSE probes to the other pad of R10.
5.
Acquire a resistance measurement with the PXI-4071.
6.
Compare the results to the
Lower Limit
and
Upper Limit
values in Table 11. If the results
are between these values, the device passes the test.
7.
Repeat steps 3 through 6 for all other 5
shunt resistors.
Note
If the TB-4302C fails verification, refer to
for assistance in
returning the terminal block to NI.
Table 10.
PXI-4071 Voltage Measurement Setup
Configuration
Value
Function
4-wire resistance measurement
Range
100
Digital Resolution
7.5
Aperture Time
100 ms
Autozero
On
ADC Calibration
On
Input Impedance
> 10 G
DC Noise Rejection
High order
Number of Averages
1
Power Line Frequency
Dependent upon the local power line characteristics.
Offset Compensated Ohms
On
Table 11.
5
Shunt Accuracy Limit
Nominal
Upper Limit
Lower Limit
5
5.025
4.975
