Lexicon Primetime Input Filter Null Test

[Sisu MT]

Just brought an M93 back to life and need to calibrate it. This'll be my first time and have a question.
Where it says "null should be at least -35 dbm", how do I measure this? I've converted volts and watts to dbm, but not sure if that's that right way here?

 

[radardoug]

Dont get too worried about dBm. You are looking for a null level, so -35dB below your reference level signal.