Re: [Discuss-gnuradio] USRP sink block with 2 channels

[Marcus Müller]

Hi Vipin,

the error message is right, the AD936x on the USRP physically *can't* operate in such a mode. Solution is to have 2TX 2RX, and just ignore one receive channel.

Best regards,

Marcus

On 10/22/2017 10:20 AM, Vipin Sharma wrote:

I have a B210 USRP board. My application requires one receiver and two transmitter channels operating simultaneously. 

The flow graph has one instance of  USRP Sink block with number of channels configured to 2. The Subdev Spec is configured to "A:A A:B". 

When I execute the flow graph, I get this runtime error as shown below. 

I also tried creating two USRP Sink blocks with single channel each but one with Subdev Spec as A:A and other as A:B. That one doesn't have any runtime error, but I don't see the 2nd channel's Tx LED light up.

How do I configure the USRP sink blocks?

thread[thread-per-block[4]: <block gr uhd usrp sink (2)>]: RuntimeError: b200: 2 RX 1 TX and 1 RX 2 TX configurations not possible

Vipin

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