I have a LFTX board and a LFRX board in a USRP-N210 and I am using GRC
3.6.1 in ubuntu 13.10.
I would like to transmit on both LFTX channels simultaneously. Does
Here are some things I tried:
I can transmit on either channel by specifying the subdevice as A:A or
in the attached file called TransmitsOneChannel.grc.
If I try to do this on both channels it does not work. (See
DoesNotWork.grc) When I run the program it just starts, stops, and the
python output on the bottom of GRC just says ‘done’.
I would like to specify two sources on the sink like in
(StillDoesNotWork.grc) but it complains that there are not two tx dsp’s.
would be nice if I could specify the input type as ‘float’ but that does
not seem to be an option.
However if I choose the subdevice A:AB I can get both channels to
but I cannot seem to control what they send. My attempt is in
TransmitsBothChannelsButWeird.grc where I specify the real and imaginary
parts of the signal to the USRP by feeding float signal sources into a
float to complex conversion block. The scope output within GRC looks
but when I use an oscilloscope on the actual outputs, the sine wave
seems to flip around randomly in phase and amplitude. It looks the same
Any help would be appreciated,