Re: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

2021-09-21 Thread یک نفر
Ok, thank you. Guides are very useful. On Tue, Sep 21, 2021 at 4:56 PM Jim Melton wrote: > The issue is that you can’t write to disk as fast as your samples are > coming in. This is a fundamental limitation of recording high rate data. > > > > --- > > *Jim Melton* > > Principal Software Engineer

Fwd: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

2021-09-21 Thread Ed Criscuolo
Sorry, meant to send this to the list. @(^.^)@ Ed Sent from my iPhone Begin forwarded message: > From: Ed Criscuolo > Date: September 21, 2021 at 11:23:24 AM EDT > To: Marcus D Leech > Subject: Re: why when i use gnuradio for USRP with UHD for high sample rate > record file is not work > >

RE: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

2021-09-21 Thread Jim Melton
The issue is that you can’t write to disk as fast as your samples are coming in. This is a fundamental limitation of recording high rate data. --- Jim Melton Principal Software Engineer From: Discuss-gnuradio On Behalf Of ?? ??? Sent: Tuesday, September 21, 2021 07:40 To: discuss-gnuradio@gn

Re: why when i use gnuradio for USRP with UHD for high sample rate record file is not work

2021-09-21 Thread Marcus D Leech
Well if you’re recording complex float samples, that’s 8 bytes each. At 60msps that’s 480Mbyte/second. Not too many disk subsystems can keep up at that rate. You might try short recordings into a RAM disk filesystem. Sent from my iPhone > On Sep 21, 2021, at 10:42 AM, یک نفر wrote: > >  >

why when i use gnuradio for USRP with UHD for high sample rate record file is not work

2021-09-21 Thread یک نفر
I use a USRP x300, when i want to use uhd and file sink in gnuradio , for high sample rate like 60M or 80M gnuradio can not record file.Gnuradio print some character on log: i want to record a sample not any other thing. Is there any way that i can record with high sample rate in gnuradio? my syst

Re: Error when opening flowgraph unless a specific unused block is enabled

2021-09-21 Thread Volker Schroer
It's an error in grc. The block 'Modulate vector' is not proper evaluated. Just open and close the block 'Modulate vector' in the property editor then you get the error message : Value "digital.modulate_vector_bc(mod.to_basic_block(), data, taps)" cannot be evaluated: 'NoneType' object has no at