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Re: Sending Only Real Values with USRP N210 and LFTX/RX


From: Marcus D. Leech
Subject: Re: Sending Only Real Values with USRP N210 and LFTX/RX
Date: Wed, 15 Jan 2025 09:44:39 -0500
User-agent: Mozilla Thunderbird

On 15/01/2025 07:01, Wenning, Nils wrote:

Hi everyone,

I have a question that might be quite basic:
I am using a USRP N210 equipped with the LFTX and LFRX daughterboards.

For my application, I require a sample rate of 33.33 MSps. However, as soon as I increase the sample rate from 25 MSps to 33.33 MSps, I encounter frequent underruns.

My assumption is that both the real and imaginary parts of the signal are being transmitted over Ethernet, which exceeds the 1 Gbps bandwidth limit.

My question is: What do I need to change in the UHD Source/Sink block to transmit only the real values? Are there specific settings or configurations I need to adjust?

Any help would be greatly appreciated.

Thanks in advance!
Nils

 

As far as I know, there is no mode that allows send only the real or imaginary part of the signal "over the wire".

However, you CAN use 8-bit samples over-the-wire, using "otw_format=sc8" in the device arguments.



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