At 01:11 PM 1/11/2007, Eric Wachsmann wrote: >Right now it is limited to just the filter (much like our entire display >used to be). The long term plan is to enable the full width display for all >modes (not just spectrum). So Waterfall, Histogram, etc will have modes >similar to the current panadapter. All of that is coming, but it is looking >more and more like it will come in the next version of the console.
and, architecturally, what you probably want is some sort of waterfall display module to which you pipe spectral data. There are some tricky aspects to waterfall displays and the UI connected with them. For instance, if you tune around the band, do you move the entire display so that the currently tuned frequency is in the middle? And, of course, you have to keep track of where the DDS is tuned vs the software demodulator is tuned, because the "center frequency" of the FFT output moves with the DDS, not with the current tuning frequency (because of spur reduction) And, then, there are all the usual graphics related issues for waterfall displays (level to color mapping, vertical or horizontal, scaling , etc.) particularly what you do when you change some thing (if I change the RF gain of the radio, do I compensate for that in the waterfall, or do I just show it as the signals being stronger now...) I prefer having calibrated displays.. that is, the display is always in "true" levels, just like a real spectrum analyzer, but there are good reasons why you might not want to do it that way. But, for instance, if you change the dB/color mapping, do you do it for the whole waterfall, or just from the point of change. Jim, W6RMK _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
