SCXI-1122 Calibration Procedure
4
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driver functions. You can access the help file by selecting
Start»All
Programs»National Instruments»NI-DAQ»Traditional NI-DAQ
Function Reference Help
.
The user manual provides instructions on installing and configuring
NI-DAQ devices. It also includes detailed information about creating
applications that use Traditional NI-DAQ (Legacy). You can access the user
manual by selecting
Start»All Programs»National Instruments»
NI-DAQ»Traditional NI-DAQ User Manual
.
These documents are your primary references for writing your calibration
utility. For more information about the products you are calibrating, refer
to the device documentation.
Test Conditions
Follow these guidelines to optimize the connections and environment
during calibration:
•
Keep connections to the SCXI-1122 module and the terminal block
short. Long cables and wires act as antennae, picking up extra noise
and thermal offsets that can affect measurements.
•
Use shielded copper wire for all cable connections to the device.
Use twisted-pair wire to eliminate noise and thermal offsets.
•
Maintain the temperature between 18 °C and 28 °C.
•
Keep relative humidity below 80%.
•
Allow a warm-up time of at least 15 minutes for the SCXI-1122
module and 30 minutes for the E Series DAQ device to ensure the
measurement circuitry is at a stable operating temperature.
Calibration
The calibration process has the following steps:
1.
Set up the SCXI-1122 module for verification.
2.
Verify the existing operation of the module to determine whether the
module is operating within its test limits.
3.
Adjust the module with respect to a known voltage source.
4.
Verify that the module is operating within its test limits after
adjustments.
