The following section applies to PXIe-1095 chassis with the Timing and Synchronization upgrade.

The PXIe-1095 chassis is factory calibrated before shipment at approximately 25 °C to the levels indicated in the PXIe-1095 Specifications. The associated calibration constant is stored in the onboard nonvolatile memory.

The factory calibration of the PXIe-1095 involves calculating and storing one calibration constant that sets the OCXO frequency. The OCXO that the PXIe-1095 uses features electronic frequency control. This allows fine-tuning the OCXO by varying the control voltage to the OCXO. The chassis uses a 16-bit digital-to-analog converter (DAC) to give precise control of the tuning voltage. A single calibration constant sets the DAC value. This constant is adjusted during factory calibration to meet the specification listed in the PXIe-1095 Specifications.

Refer to ni.com/calibration for additional information about NI calibration services.