On 09/06/2017 08:15 PM, Steven Knudsen via USRP-users wrote:
Hi All,
I am building a TDMA system based on the B200mini. TX is out the TRX
port and RX is on RX2.
I schedule both TX and RX using stream commands. Tested separately,
they work great. However, when I have them running together (separate
threads for send and recv calls), the transmit waveform is attenuated
about 70%. Since I’ve not yet got the demodulation set up, I am not
sure if it’s just attenuation or maybe something else. The transmitted
packet length looks to be okay.
I thought that maybe the transmit and receive windows are maybe too
close in time, so separated them by a millisecond; no change.
I suspect I am seeing some kind of interference between the TX and RX
streamers. Maybe I need to issue some command at the end of RX?
Any suggestions on where I’m going wrong?
Thanks,
steven
Are you running the latest UHD?
I vaguely recall some switching issues on this platform with an early
code release. But I could be mis-remembering.
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