All
I have recently been using a receiver (Rohde & Schwartz ESCI 7) which
has the ability to switch between AC and DC coupling of input signals.
When I use the receiver to measure the unmodulated output of a signal
generator set at 150kHz & 60dBuV the receiver indicates 57dBuV when AC
coupled and 60dBuV when DC coupled.
Our older receiver (Teseq SCR3102) doesn't have the facility to switch
between AC & DC coupling and indicates 60dBuV.
I presume the receiver should indicate 60dBuV for a 60dBuV signal but
which type of coupling is required by EN55011 & EN55022?
Ian Gordon
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