Hi all,
We're currently working with a BasicTX daughterboard
attached to a N210 USRP. We are using both outputs of
the BasicTX in quadrature (I on one channel, Q on the
other). The problem we are running into is that the
output power of the BasicTX board seems very low.
Looking at it on an o-scope, we are seeing around 166mV
RMS on each channel, which seems lower than we would
expect.
We are using GNURadio Companion to transmit these
waveforms, and it is a very simple setup. A single "Signal
Source" block generating a sine wave into a "UHD: USRP
Sink" block. The "amplitude" value is at it's near max
without clipping in the ADC and since the daughterboard
has no gain elements, "gain" does nothing, so we're kind
of at a loss here.