[Discuss-gnuradio] RX->TX Switching delay on XCVR2400?

[Florian Schlembach]

Trying out the tunnel.py example, we are transmitting a ping request 
between two USRP2s. The receiving USRP should respond immediately with a 
ping reply what the outpout is also saying.
At all, this ping reply is not send. We can bypass this by deploying a 
time.sleep(0.05) at the RX-USRP before sending the ping reply 
(txpath.send_pkt(payload)). Thus, the transmission is left behind for 
50ms which is not very convenient.

Is it because the hardware components have to settle and the tx/rx 
switching takes some time? Or might there be some configuration 
settings? A colleague of mine is supposing something about different 
transmitting mode like streaming and sending just bursts?

Thanks a lot in advance, I really appreciate your help!