[USRP-users] UBX160 TX "noise figure"?

2020-11-30 Thread Lukas Haase via USRP-users
Hello, Does anyone know what the *TX* noise figure (output SNR) of the UBX160 is? Roughly? For simplicity, can neglect phase noise and assume white noise floor. In words, if I transmit a full-scale sinusoidal signal, what will be the noise floor around that signal? Of course, this will depend o

Re: [USRP-users] UBX160 TX "noise figure"?

2020-11-30 Thread Marcus D Leech via USRP-users
The output SNR will be utterly dominated by the inherent DAC noise. There’s a good article here: https://www.analog.com/media/en/training-seminars/tutorials/MT-001.pdf Sent from my iPhone > On Nov 30, 2020, at 4:03 AM, Lukas Haase via USRP-users > wrote: > > Hello, > > Does anyone know wh

Re: [USRP-users] UBX160 TX "noise figure"?

2020-11-30 Thread Lukas Haase via USRP-users
Hi Marcus,   That makes sense, thanks.   Would you be willing to confirm if what I am doing here is correct?     To first order, the DAC has an SNR of 98dB (16 bit). Then I use Fries' equation to get the NF of the following stages (for the filter and the attenuator, the noise figure is eq

Re: [USRP-users] UBX160 TX "noise figure"?

2020-11-30 Thread Marcus D. Leech via USRP-users
On 11/30/2020 01:54 PM, Lukas Haase wrote: Hi Marcus, That makes sense, thanks. Would you be willing to confirm if what I am doing here is correct? To first order, the DAC has an SNR of 98dB (16 bit). Then I use Fries' equation to get the NF of the following stages (for the filter and the atten

Re: [USRP-users] GNURADIO doesn't find USRP B205

2020-11-30 Thread Marcus D. Leech via USRP-users
On 11/30/2020 01:27 PM, Jens Hoffmann wrote: uhd_images_downloader output: Again, you have TWO UHD library installations.The version that Gnu Radio is linked against is 3.13, whereas your uhd tools, like uhd_usrp_probe are apparently 3.15. My *guess* is that you installed Gnu Radio fro

[USRP-users] Can I detect a wiretype of USB device?

2020-11-30 Thread Mikio Fukushima via USRP-users
Hi, I use a B200 and B200mini. Often they are connected under USB 2.0 ports, it will cause some problems. Can I detect a wire type of USB device by UHD API? Mikio ___ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/list