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The RB3X20 is used in connection SIGLENT's SSA3000X series spectrum analysers to measure parameters such as return loss, reflection coefficient and VSWR.
The RB3X20 also provides 2 x N(M)-N(M) adapters to connect to the SSA3000X’s ports.
The reflection bridge has 3 ports as the figure shows:
-IN(TG): Signal input terminal. This terminal
used to connect with the TG terminal of the
-OUT(RF): Signal output terminal. This
terminal used to connect with the RF input
terminal of the spectrum analyzer
-DUT: Here Device under test is connected
The distance of ports is designed for SSA3000X series especially in order to reduce extra cables and improve accuracy in measurement.