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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Well, I swapped out our Novra S-75 for the Novra S-200 today,which accepts and decodes the DVB-S2 format and the various modulation schemes (8PSK, QPSK, etc etc).
I think I found a bug in the S-200 setup software: When it asks for the symbol rate, I put in 6.349 msps. But after hitting OK and saving it, it shows up as 6.348 msps on the screen. So I put in 6.350, and on screen, it showed 6.349, and all was well. I've notified Novra support about that.
When I entered 1193.500 MHZ as the LF frequency, it chopped it off to 1193. Then, in the display, it said "1193 (+567 Hz)". Just out of curiosity, I did "1194" and it locked it as "1194 (-433 Hz)". I see what it's doing now. That can be confusing, but I know what it's doing and I'll run with it. I assume, like the S-75, it adjusts if the source frequency drifts.
Otherwise, my signal strength is now 76 with the S-200, compared to 80 with the S-75. VBER is still zero, however, and C/N is fluctuating right around 12.5. I don't know what that means or if it's good or not.
Gilbert ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** Staff Meteorologist, Northern Illinois University **** E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx *** web: http://weather.admin.niu.edu ** *******************************************************************************
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