FPGA System A modulator

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FPGA System A modulator

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ppppenguin

Senior Engineer in Charge

Posts: 7,581
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Location: London N12

#43

28-11-2018, 03:50 PM

Just tried a 41.5MHz carrier. The waveform looks truly horrible on the scope and I don't know why yet. Attached is spectrum analyser shot. Shows carrier on frequency but with lots of spurii. The worst one would be in the video band, at about 47.2MHz, and less than 20dB down.

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www.borinsky.co.uk Jeffrey Borinsky www.becg.tv

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Messages In This Thread

FPGA System A modulator - by `FRANK.C - 17-11-2018, 01:06 PM

RE: FPGA System A modulator - by ppppenguin - 17-11-2018, 02:12 PM

RE: FPGA System A modulator - by `FRANK.C - 17-11-2018, 04:05 PM

RE: FPGA System A modulator - by Freya - 17-11-2018, 05:05 PM

RE: FPGA System A modulator - by Murphyv310 - 17-11-2018, 07:42 PM

RE: FPGA System A modulator - by ppppenguin - 17-11-2018, 07:51 PM

RE: FPGA System A modulator - by ppppenguin - 17-11-2018, 09:01 PM

RE: FPGA System A modulator - by `FRANK.C - 17-11-2018, 11:11 PM

RE: FPGA System A modulator - by ppppenguin - 18-11-2018, 07:03 AM

RE: FPGA System A modulator - by ppppenguin - 18-11-2018, 08:30 AM

RE: FPGA System A modulator - by ppppenguin - 18-11-2018, 10:24 AM

RE: FPGA System A modulator - by `FRANK.C - 18-11-2018, 09:33 PM

RE: FPGA System A modulator - by ppppenguin - 19-11-2018, 06:42 AM

RE: FPGA System A modulator - by `FRANK.C - 19-11-2018, 01:40 PM

RE: FPGA System A modulator - by ppppenguin - 19-11-2018, 02:11 PM

RE: FPGA System A modulator - by Nick - 19-11-2018, 02:29 PM

RE: FPGA System A modulator - by ppppenguin - 19-11-2018, 03:10 PM

RE: FPGA System A modulator - by `FRANK.C - 19-11-2018, 10:58 PM

RE: FPGA System A modulator - by ppppenguin - 20-11-2018, 09:22 AM

RE: FPGA System A modulator - by Terry - 20-11-2018, 09:59 AM

RE: FPGA System A modulator - by ppppenguin - 20-11-2018, 10:29 AM

RE: FPGA System A modulator - by Terry - 20-11-2018, 05:19 PM

RE: FPGA System A modulator - by ppppenguin - 20-11-2018, 11:08 AM

RE: FPGA System A modulator - by `FRANK.C - 20-11-2018, 06:58 PM

RE: FPGA System A modulator - by ppppenguin - 20-11-2018, 09:48 PM

RE: FPGA System A modulator - by `FRANK.C - 24-11-2018, 07:01 PM

RE: FPGA System A modulator - by Terry - 24-11-2018, 08:50 PM

RE: FPGA System A modulator - by Murphyv310 - 24-11-2018, 07:09 PM

RE: FPGA System A modulator - by ppppenguin - 24-11-2018, 09:35 PM

RE: FPGA System A modulator - by `FRANK.C - 25-11-2018, 10:07 AM

RE: FPGA System A modulator - by ppppenguin - 25-11-2018, 02:25 PM

RE: FPGA System A modulator - by Murphyv310 - 25-11-2018, 02:35 PM

RE: FPGA System A modulator - by Freya - 25-11-2018, 02:44 PM

RE: FPGA System A modulator - by ppppenguin - 25-11-2018, 06:22 PM

RE: FPGA System A modulator - by `FRANK.C - 25-11-2018, 06:51 PM

RE: FPGA System A modulator - by ppppenguin - 25-11-2018, 07:06 PM

RE: FPGA System A modulator - by `FRANK.C - 25-11-2018, 07:47 PM

RE: FPGA System A modulator - by ppppenguin - 25-11-2018, 09:42 PM

RE: FPGA System A modulator - by `FRANK.C - 25-11-2018, 11:19 PM

RE: FPGA System A modulator - by ppppenguin - 26-11-2018, 07:01 AM

RE: FPGA System A modulator - by `FRANK.C - 26-11-2018, 08:03 PM

RE: FPGA System A modulator - by ppppenguin - 28-11-2018, 02:51 PM

RE: FPGA System A modulator - by ppppenguin - 28-11-2018, 03:50 PM

RE: FPGA System A modulator - by ppppenguin - 28-11-2018, 04:59 PM

RE: FPGA System A modulator - by `FRANK.C - 28-11-2018, 06:27 PM

RE: FPGA System A modulator - by ppppenguin - 28-11-2018, 07:15 PM

RE: FPGA System A modulator - by `FRANK.C - 28-11-2018, 11:11 PM

RE: FPGA System A modulator - by ppppenguin - 29-11-2018, 07:32 AM

RE: FPGA System A modulator - by ppppenguin - 05-12-2018, 11:38 AM

RE: FPGA System A modulator - by `FRANK.C - 05-12-2018, 08:31 PM

RE: FPGA System A modulator - by ppppenguin - 05-12-2018, 10:06 PM

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