Hi All,
Proud new owner of a Rigol DSA815TG spectrum analyzer here. I have never used one before and my first project is tuning a mobile UHF duplexer that has had the "golden screwdriver" applied to it in the past. I seem to be able to get a little better than -100dB of isolation from it. I just want to make sure I am doing this correctly.
The duplexer has three ports, marked LOW, ANT and HIGH. Let's say I want to do a 5mHz positive offset with 442 being the RX frequency and 447 being the TX frequency. I connect the TG output to the ANT. To set the RX side of the duplexer I would connect the analyzer input to the side marked LOW, terminate the HIGH side with a 50 ohm terminator and set the frequency to 447, then tune for greatest isolation. Then connect the analyzer input to the HIGH side, set the frequency to 442 and tune for greatest isolation. Correct?
This is FUN!