Calibrating CompactDAQ Chassis Using Calibration Executive

Calibrate a cDAQ-9170, cDAQ-9171, cDAQ-9173, cDAQ-9174, cDAQ-9177, cDAQ-9178, cDAQ-9179, cDAQ-9181, cDAQ-9183, cDAQ-9184, cDAQ-9185, cDAQ-9187, cDAQ-9188, cDAQ-9189, or cDAQ-9191 chassis using Calibration Executive.

Note The cDAQ-9172 chassis is not supported in NI-DAQmx 17.6 and later. Therefore, cDAQ-9172 is no longer supported in Calibration Executive beginning with version 4.6. Refer to ni.com for information about devices and modules no longer supported in NI-DAQmx.

Calibration Executive Procedure Features

Verify Only Verify & Adjust Manual Mode Optional Adjust

Approximate Test Time

1 minute

Test Equipment

The following table lists the test equipment required for calibrating CompactDAQ chassis devices.

Table 100. Test equipment for calibrating a cDAQ-9170, cDAQ-9171, cDAQ-9173, cDAQ-9174, cDAQ-9177, cDAQ-9178, cDAQ-9179, cDAQ-9181, cDAQ-9183, cDAQ-9184, cDAQ-9185, cDAQ-9187, cDAQ-9188, cDAQ-9189, or cDAQ-9191 chassis
Instrument Recommended Model Requirements
Counter Keysight 53131A, Keysight 53220A If this instrument is unavailable, use a counter accurate to ±5 ppm.
C Series Digital I/O Module NI 9401, NI 9402 —
C Series Connection Accessory NI 9924 (NI 9401) 25-pin DSUB to screw-terminal connector block.

Test Conditions

The following setup and environmental conditions are required to ensure the CompactDAQ chassis meets published specifications.

  • Keep connections to the C Series module as short as possible. Long cables and wires act as antennas, picking up extra noise that can affect measurements.
  • Maintain an ambient temperature of 23°C ± 5°C. The device temperature will be greater than the ambient temperature.
  • Keep relative humidity below 90%.
  • Allow a warm-up time of at least 10 minutes to ensure that the measurement circuitry is at a stable operating temperature.

Device Setup

  1. Install the C Series digital I/O module in the CompactDAQ chassis.
  2. Configure the hardware using Measurement & Automation Explorer (MAX).
  3. Launch the Calibration Executive procedure and complete the setup wizard. Ensure that you enter the CompactDAQ chassis serial number in the setup wizard and not the serial number of the C Series I/O module.

Note If the calibration procedure cannot detect the installed Ethernet CompactDAQ chassis during setup, it must be added manually. See Verifying the Installation in MAX in your CompactDAQ Chassis User Manual for instructions at ni.com/docs.
Note If the CompactDAQ chassis module fails after calibration, return it to NI for repair or replacement.