Calibrate the NI-9269 using Calibration Executive.

Calibration Executive Procedure Features

Verify Only Verify & Adjust Manual Mode Optional Adjust

Approximate Test Time

3 minutes

Test Equipment

The following table lists the test equipment required for calibrating NI-9269 modules.

Table 77. Test equipment for calibrating the NI-9269
Instrument Recommended Model Requirements
DMM NI 4070 DMM If this instrument is unavailable, use a multiranging 6 1/2-digit DMM with a voltage accuracy of ±400 ppm.
Chassis cDAQ-9178 —

Test Conditions

The following setup and environmental conditions are required to ensure the NI-9269 meets published specifications.

  • Keep connections to the NI-9269 as short as possible. Long cables and wires act as antennas, picking up extra noise that can affect measurements.
  • Verify that all connections to the NI-9269 are secure.
  • Use shielded copper wire for all cable connections to the NI-9269. Use twisted-pair wire to eliminate noise and thermal offsets.
  • Maintain an ambient temperature of 23 °C ± 5 °C. The NI-9269 temperature will be greater than the ambient temperature.
  • Keep relative humidity below 80%.
  • Allow a warm-up time of at least 10 minutes to ensure that the NI-9269 measurement circuitry is at a stable operating temperature.

Device Setup

  1. Install the NI-9269 in slot 8 of the cDAQ-9178 chassis. Leave slots 1 through 7 on the cDAQ-9178 chassis empty.
  2. Connect the cDAQ-9178 chassis to your host computer.
  3. Connect the power source to the cDAQ-9178 chassis.
  4. Configure the hardware using Measurement & Automation Explorer (MAX).
  5. Launch the Calibration Executive procedure and complete the setup wizard.

Test Limit Equations

The following test limits are derived from the published specifications found in the NI-9269 Calibration Procedure.

Table 78. NI-9269 Test Limit Equations
Equation Type Equation
Voltage Accuracy VoltageAccuracyLimit = TestValue ± [(TestValue * 0.06%) + (Range * 0.015%)]