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[Discuss-gnuradio] Two Tx channels, one motherboard (N200+LFTX)

From: khalid.el-darymli
Subject: [Discuss-gnuradio] Two Tx channels, one motherboard (N200+LFTX)
Date: Fri, 16 Jan 2015 10:55:48 -0330


Is it possible to use two separate Tx channels (A:A A:B with two different center frequencies) for the N200 with the LFTX daughterboard?

I tried to do this on the Rx side and it seems to work just fine. However, on the Tx side, I am getting the following error message:

line 97, in __init__
    self.uhd_usrp_sink_0.set_subdev_spec("A:A A:B", 0)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line 3447, in set_subdev_spec
    return _uhd_swig.usrp_sink_sptr_set_subdev_spec(self, *args, **kwargs)
RuntimeError: ValueError: The subdevice specification "A:A A:B" is too long.
The user specified 2 channels, but there are only 1 tx dsps on mboard 0.


Best regards,

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