Key facts
- Automatic calibration units with 2, 4 or 6 ports, 8.5 GHz
 - R&S®ZN-Z154 multiport calibration unit configurable with up to 24 ports
 - Easy calibration of multiport setups of up to 24 ports without multiple reconnections
 - R&S®ZN-Z156 2-port calibration unit up to 67 GHz