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NI 5122/5124/5142 Calibration Procedure
•
Allow a warm-up time of at least 15 minutes to ensure that the measurement circuitry is at
a stable operating temperature. Unless manually disabled, the NI-SCOPE driver
automatically loads with the operating system and enables the device. This warm-up time
ensures the digitizer is at a stable operating temperature.
•
Ensure that the PXI/PXIe 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
.
•
Plug the chassis/PC and the calibrator into the same power strip to avoid ground loops.
Calibration Procedures
The calibration process includes the following steps:
1.
—Install the device and configure it in Measurement & Automation Explorer
(MAX).
2.
—Adjust the self-calibration constants of the device.
3.
—Verify the existing operation of the device. This step confirms whether the
device is operating within the published specifications prior to adjustment.
4.
—Perform an external adjustment of the device that adjusts the calibration
constants of the device. The adjustment procedure automatically stores the calibration date
on the EEPROM to allow traceability.
5.
Reverification—Repeat the
procedure to ensure that the device is operating
within the published specifications after adjustment.
These procedures are described in more detail in the following sections.
Initial Setup
Refer to the
NI High-Speed Digitizers Getting Started Guide
for information about how to install
the software and hardware and how to configure the device in MAX.
Self-Calibration
The NI 5122/5124/5142 includes precise internal circuits and references used during
self-calibration to adjust for any errors caused by short-term fluctuations in the environment.
Note
Allow a 15-minute warm-up period before you begin self-calibration.
Self-calibration can be initiated from MAX, NI-SCOPE Soft Front Panel (SFP), and NI-SCOPE.
MAX
To initiate self-calibration from MAX, complete the following steps:
1.
Disconnect or disable any AC inputs to the digitizer.
2.
Launch MAX.
3.
Select
My System»Devices and Interfaces
.
