E7770A
Common Interface Unit
The Keysight E7770A common interface unit (CIU) provides a bidirectional intermediate frequency (IF) interface to the device under test.
U9361M
RCal Receiver Calibrator, 10 MHz to 110 GHz
U9361M RCal Receiver Calibrator shifts the reference plane to your DUT for magnitude and phase corrections up to 110 GHz.