Table Of Contents
System Calibration Utility
Last Modified: August 9, 2019
The system calibration utility is included in the NI mmWave Reference Project. This utility calibrates the system by measuring in-phase/quadrature (I/Q) impairments for each channel. To use this utility, the mmWave Transceiver System must be configured as a transceiver or a receiver.
Table 1. Devices Calibrated in Configuration Modes
| Mode | Devices Calibrated |
|---|---|
| Receiver | Receiver |
| Transceiver | Receiver and transmitter |
| Transmitter | None |
You must recalibrate the system if you exchange any of the following components:
- PXIe-3610 Waveform Generator
- PXIe-3620 RF Upconverter and Downconverter Module
- PXIe-3630 Digitizer
- MMPX(m)-to-MMPX(m) cables
The measured I/Q impairments are stored on the PXIe-3620 module.
When using the reference FPGA design and host code provided by the NI mmWave Reference Project, the measured I/Q impairments are retrieved from the device by the Open VI and used by the Configure VI to correct the system.