The Anritsu 22N50 is a DC to 18 GHz open / short.
The 22 Series Open/Shorts are used on the test port of an SWR Autotester or SWR
bridge to establish a full reflection reference for accurate SWR measurements.
When used with scalar network analysers, the open and short reflections over a
swept frequency range can be automatically averaged to enhance measurement
accuracy. All models consist of an open on one end and a short on the other.