PXIe-4468 Calibration Procedure
© National Instruments Corporation
5
Calibration Condition Guidelines
Keep cabling as short as possible. Long cables act as antennas, picking
up extra noise that can affect measurements.
Ensure that all connections to the DUT are secure.
Allow adequate warm up time for all components of the calibration
system.
Make all connections as shown in diagrams.
Use shielded copper wire for all cable connections to the DUT.
Use twisted-pair wires to eliminate noise and thermal offsets.
Ensure that the PXI/PXI Express chassis fan speed is set to HIGH, that the
fan filters are clean, and that the empty slots contain filler panels. For
more information, refer to the Maintain Forced-Air Cooling Note to Users
document available at ni.com/manuals.
If a DUT fails reverification after adjustment, ensure that the Test
Conditions have been met before returning the DUT to NI.
If the coupling changes from DC to AC (for example, on the first gain
verification point tested), commit the configuration using the DAQmx
Control Task VI and wait 5 seconds for the input to settle. Subsequent
gain verification points, which do not change the coupling, do not
require a delay.
Calibration Resources
Required Software
Note
Ensure that the most recent version of the required driver software is
installed before conducting the calibration.
