©
National Instruments Corporation
5
NI 9237 Calibration Procedure
Calibration Procedure
This section provides instructions for verifying the performance of the
NI 9237.
Calibration Process Overview
The calibration process consists of the following steps:
1.
—Configure the device in NI-DAQmx.
2.
—Verify the existing operation of the device.
This step confirms whether the device was operating within its
specified range prior to calibration.
3.
Adjustment
—Submit the device to NI for a factory calibration to adjust
the calibration constants.
4.
—Perform another verification to ensure that
the device operates within its specifications after adjustment.
The first two steps are explained in the following sections.
Initial Setup
You must configure the device in Measurement & Automation Explorer
(MAX) to communicate with NI-DAQmx.
Complete the following steps to configure a device in MAX.
1.
Install the NI-DAQmx driver software.
2.
Make sure that no power is connected to the module terminals. If the
system is in a nonhazardous location, the chassis power can be on
when you install the module.
3.
Insert the module into an available slot in the cDAQ-9172 chassis.
4.
Launch MAX.
5.
Right-click the device name and select
Self-Test
to ensure that the
device is working properly.
Note
When a device is configured with MAX, it is assigned a device name. Each function
call uses this device name to determine which DAQ device to calibrate. This document uses
dev1
to refer to the device name. In the following procedures, use the device name as it
appears in MAX.
