©
National Instruments Corporation
3
NI PXIe-6672 Calibration Procedure
Calibration Interval
The measurement requirements of the application determine how often you
should calibrate the device to ensure its accuracy. National Instruments
recommends that you calibrate the NI PXIe-6672
yearly
. You may want to
shorten this interval based on the application demands.
Password
The default password for password-protected operations is
NI
.
Test Equipment
Calibrating the NI PXIe-6672 requires the following equipment.
Test Conditions
Follow these guidelines to optimize connections and test conditions during
the calibration procedure:
•
Install the NI PXIe-6672 in the system timing slot of the PXI Express
chassis. The calibration procedure requires features of PXI that are
accessible only in the system timing slot.
•
Maintain a temperature of approximately 25 °C.
•
Keep relative humidity below 80 percent.
•
Use shielded copper wire for all cable connections to the device.
•
Allow a warm-up time of at least 15 minutes for the NI PXIe-6672 to
ensure the measurement circuitry is at a stable operating temperature.
•
Keep PXI chassis filters clean and fan speed set to High.
Equipment
Recommended Model
Requirements
10 MHz clock source
Symmetricom/Datum 8040
Accurate to within
150 parts-per-billion (ppb)
BNC-SMB cable
—
—
SMB-SMB cable
—
—
