SCXI-1503 Calibration Procedure
8
ni.com
Self-Calibration
The SCXI-1503 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 30 minute
warm-up period before you begin self-calibration.
You can initiate self-calibration from MAX.
MAX
To initiate self-calibration from MAX, complete the following steps:
1.
Launch MAX.
2.
Select
My System»Devices and Interfaces»NI-DAQmx Devices
.
Note
NI-DAQmx Devices is not displayed when using NI-DAQmx 9.0 or later.
3.
Select the DAQ device you are using to digitize the SCXI-1503.
4.
Initiate self-calibration in one of the following ways:
•
Click
Self-Calibrate
in the upper right corner of the window. If the Self-Calibrate button is
not displayed, click the
»
button.
•
Right-click the module and select
Self-Calibrate
from the context menu.
5.
Select the chassis containing the module you want to calibrate.
6.
Select the module that you want to calibrate.
7.
Initialize a self-calibration of the module you want to calibrate.
Verification
This section provides instructions for verifying the following SCXI-1503 specifications:
•
Analog input.
•
Excitation current.
Note
Limits in Table 2 are based on the March 2007 edition of the
SCXI-1503 User Manual
, which
includes the specifications. Refer to
ni.com/manuals
to determine if there is a more recent edition
of the specifications. If a more recent edition of the specifications is available, recalculate the limits
based upon the latest specifications.
Verifying the Analog Input
Complete the following steps to verify the analog input of the SCXI-1503:
1.
Connect the calibrator ± output to all of the SCXI-1306 AI± input channels.
Note
Ensure that all switches on the SCXI-1306 are in the off position as shown in Figure 3.
2.
Insert the NB1 ribbon cable into the breakout connector on the SCXI-1349.
3.
Insert the SCXI-1349 into the SCXI-1503 rear connector.
4.
Insert the other end of the NB1 ribbon cable into the CB-50 ribbon cable connector.