•
If you want to continue verifying the PXIe-4082, go to the
Verifying Capacitance and
Inductance
section.
•
If you do not want to verify any additional modes and are performing a pre-adjustment
verification, close the session.
•
If you do not want to verify any additional modes, and you want to update the verification
time stamp, complete the following steps:
1.
Open a new calibration session to the instrument (with correct calibration password).
2.
Close the calibration session with the
Action
set to
Save
.
Verifying Capacitance and Inductance
Complete the following steps to verify capacitance and inductance for the PXIe-4082:
Note
The PXIe-4082 inductance accuracy is theoretically verified if the
capacitance accuracy meets its specification. If you have access to precision
inductors, you can verify the inductance measurements by comparing your results
with the published accuracy specifications.
You can use different verification capacitors to verify each capacitance range. You can verify
two ranges with the same verification capacitor as long as its value is ≥ 10% of the higher
capacitance range. For example, you can use a 1 nF verification capacitor to test both the 10
nF and 1 nF ranges.
The following verification procedure assumes the use of verification capacitors with the
following values: 270 pF, 1 nF, 100 nF, 10 µF, and 1000 µF.
The configuration of the cables and fixtures should be consistent throughout each
measurement. If you are using cables to connect the verification capacitors to the inputs of the
PXIe-4082, minimize noise by ensuring that the cables remain fixed and do not move during
the measurement.
Keep direct contact with the verification capacitors to a minimum so that they are constantly
kept at the ambient temperature. After connecting a capacitor to the PXIe-4082, NI
recommends waiting 30 seconds for the capacitor temperature to stabilize.
Note
You should know the total capacitance up to the banana connectors that plug
into the PXIe-4082 before performing the verification procedure.
1.
Disconnect any fixtures or cables from the device.
2.
Reset the PXIe-4082.
3.
Verify the accuracy for each configuration in the following table:
a)
Connect the indicated standard to the device and wait the recommended settling
time.
b)
Configure the device as indicated in DMM Range and take a measurement.
c)
Compare the acquired value to the specified tolerances.
d)
Repeat the previous steps for each standard listed in the table.
PXIe-4080/4082 Calibration Procedure
|
© National Instruments
|
17