I am BG0AUB. Recently I built portsdown2019, this is a great project.Easy to use DATV.I tested limesdr mini + portsdown2019 QO100 repeater.His work is very good.It's very convenient.But I find that if I set of DVB - S2 QPSK H264 mode.Limesdr mini did not produce the correct spectrum.If when the SR low, will produce a larger peak at the center of the frequency point.The SR is high, he what also have no output.I consulted another article about H264 don't work in the BBS posts, and repeatedly in different SD card to recompile the portsdown2019.The phenomenon still exists.
The report on your second picture shows that your LimeSDR is failing the LimeQuickTest. More details here: https://wiki.myriadrf.org/Testing_the_LimeSDR. So that is a LimeSDR problem, not a Portsdown problem. Some LimeSDRs fail this test (by a small tolerance) but still work perfectly.
What symbol rates, FECs and video sources are you having the problems that you report with? There are some modes that do not work at the moment. Please refer to the table here: viewtopic.php?f=103&t=6070#p19583
Thanks for your reply. I will check according to the process you said.I found even Ugly mode.Raspberry's pin7 doesn't have any output.But in mpg2 mode, pin7 is output.Thanks again.
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Please refer to this table. Only the settings in Green work properly: viewtopic.php?f=103&t=6070#p19583. Somke questions for you:
Does your Pi Cam show on the touchscreen during transmit?
Does Ugly mode (at 437 MHz - use Preset 4 to select) work?
Does MPEG-2 work?
Did you get any errors while you were building the SD Card (warnings are OK - errors could be a problem)?
Please try SR250 DVB-S2 FEC 3/4 with the Pi Cam and tell me what happens.
Thank you for your reply.Today I did some tests as you suggestedFirst configure the parameters according to the green section in the link.Using Pi CAM as signal source, no normal spectrum is output in H264 coding.There is also no PICAM preview on the LCD.Using Ugiy mode, h264 also does not output normal spectrum.If the mpg-2 encoding is used, all the above tests are normal output spectrum.As to whether there was an error when the software was compiled, I can only be sure that there was no error reported before the automatic restart.I'm not sure about the compilation process.But I did three separate compilations with three different sd CARDS.The results are consistent.The screen and spectrum displayed by LCD in Picam H264 are selected as accessories.
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