This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Network Analyzer Calibration . Verifying the performance of vector network analyzersdevices that check how components used in cell phones radios and satellites transmit signalshas gotten lot easier and faster with this plugin device and accompanying software developed by NIST process that once took hours or days can now be done in