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simple_fm_demod only noise

Open MINDoSOFT opened this issue 6 years ago • 0 comments

Hello everyone and happy new year!!!

I am trying to get the simple_fm_demod demo to work using the LimeSDR on Windows 8.1.

But all I can get is noise as you can see in the screenshot.

image

This is my message log:

[19:38:43.789533] PothosFlow.MainWindow: Welcome to Pothos v0.6.0-PothosSDR-2017.12.31-vc14-x64
[19:38:43.945781] PothosFlow.GraphEditor: Loading C:/Users/MiNdOs/Desktop/LimeSDR USB Pack v4/Tutorials/PothosDemos/simple_fm_demod/simple_fm_demod.pothos
[19:38:44.280867] PothosFlow.MainWindow: Initialization complete
[19:38:44.437000] Pothos.PluginLoader.load: Plugin Module Error: Pothos::PluginModule(C:\Program Files\PothosSDR\lib\Pothos\modules0.6\lora\LoRa_Blocks_mine.dll): failed safe load
[19:38:44.437000] Pothos.PluginLoader.load: Plugin Module Error: Pothos::PluginModule(C:\Program Files\PothosSDR\lib\Pothos\modules0.6\proxy\environment\PythonSupport.dll): failed safe load
[19:38:44.515000] AudioSink: Using Speakers (BEHRINGER USB WDM AUD through MME
[19:38:44.945000] : Win32; Microsoft Visual C++ version 14.0; Boost_106300; UHD_003.010.002.000-19-gd9561315
[19:38:48.001000] SoapySDR: Make connection: 'USB 3.0 (LimeSDR-USB) [USB] 9070105C52710'
[19:38:48.210000] SoapySDR: Reference clock 30.720 MHz
[19:38:48.212000] SoapySDR: Device name: LimeSDR-USB
[19:38:48.212000] SoapySDR: Reference: 30.72 MHz
[19:38:48.212000] SoapySDR: Init LMS7002M(0)
[19:38:48.213000] SoapySDR: Ver=7, Rev=1, Mask=1
[19:38:48.251000] SoapySDR: LMS7002M calibration values caching Disable
[19:39:02.326000] : aU

From the wiki I see the following

Other hardware should work, however, sample rates and frontend gain may need to be fiddled with.

What would be a sample rate better suited for the LimeSDR? Now the example sample rate is 1.1025e6

MINDoSOFT avatar Jan 03 '18 19:01 MINDoSOFT