Traceable Recalibration - National Instruments DAQ PCI-4451 User Manual

Traceable Recalibration

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you can save the results in the EEPROM, so you should not have to perform
an external calibration very often. You can externally calibrate your device
by calling the NI-DAQ calibration function. To externally calibrate your
device, be sure to use a very accurate external DC reference. The reference
should be several times more accurate than the device itself. For example,
to calibrate the PCI-4451/4452, the external reference should have a DC
accuracy better than ±115 ppm (±0.001 dB).
Traceable recalibration is divided into three different areas—factory,
on-site and third party. Devices typically require this type of recalibration
every year.
If you require factory recalibration, send your PCI-4451/4452 back to
National Instruments. The device will be sent back to you with a new
calibration certificate. A detailed report may be requested for an additional
fee. Please check with National Instruments for additional information such
as cost and delivery times.
If your company has a metrology laboratory, you can recalibrate the
PCI-4451/4452 at your location (on-site). You can also send out your
PCI-4451/4452 for recalibration by a third party. Please contact National
Instruments for approved third-party calibration service providers.
5-3
Chapter 5 Calibration
PCI-4451/4452 User Manual