Re: input power of spectrum analyzer
- From: "Wayne P. Muckleroy" <wmuckleroy@xxxxxxxxxxxxxx>
- Date: Wed, 24 Oct 2007 06:47:31 -0400
The 50V input refers to an impulse or static voltage that can come from ESD or a (long) charged up cable. Always dicharge yourself and the connecting cable (center-conductor) before connecting up to the sensitive front-end.
<krishmaniac@xxxxxxxxxxx> wrote in message news:1189738922.158443.45840@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I have a spectrum analyzer with 50ohm input. It is marked the max.
30dBm/50VDC at the input. The 30dBm roughly calculates to be 136dBuV
at 50ohm impedance. The signal i am observing has frequency components
at f1,f2,...fn with magnitude close to 110dBuV. I did not understand
what the max.30dBm/50VDC at the input of analyzer stands for. Is it
the maximum signal level at any frequency level or is it the total
power of the signal at 50ohm should be less than 30dBm? if its the
power, how can i know how much power in the spectrum as the spectrum
may have infinite frequency components. Someone please clearify me
this doubt.
thanks
kristo
.
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