Ok, I wasn't thinking in this direction before, but I do have an audio
band spectrum analyzer handy.
Question is, how can I translate this to a Sinad measurement?
Looking at the receiver in question now, the second harmonic of the
1kHz tone is -40dB, and the noise is at about 5dB below that.
It's an interesting study in using the wrong instrument for the job.
I get a very detailed look at the spectrum of the audio output, but
what I need is a very non-detailed measurement of out-of-band energy.
Tried doing it on my scope too, which can subtract Chan 1 from chan 2,
but there's almost 180 degrees phase shift, and the amplitudes are very
different, and it would take some significant messing about to fix that
up.
I need a sinadder.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
