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From: | Mark Sullivan |
Subject: | Re: [Discuss-gnuradio] Suse10.1 walkthrough and a question concerning crosstalk |
Date: | Tue, 26 Sep 2006 17:31:59 -0400 |
Mark Sullivan wrote:
> When I inject a signal at a -45 dBm level on the "RX-B" sma connector
> on a Basic RX daughtercard, I see a copy of the signal on the "RX-A"
> side when I use usrp_fft.py. The level is 10-20 dB below that of what
> I see if I move the signal from "RX-B" to "RX-A," but this seems like
> too much coupling. Using a 50 ohm termination on the unconnected sma
> connector helps a little bit. I see no copy of the signal from either
> input of the other Basic RX daughtercard. Any thoghts, anyone?
>
I don't know what's happening here, but I see about -80dB coupling
between the channels.
>
> Here is a walkthough I put together for Suse10.1. I found a few
> "gotchas" not described in the build instructions on the Wiki.
Thanks! I put this on the wiki, but didn't "wikify" the formatting.
Feel free to edit it. It is linked to from the Suse install page.
Matt
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