The power of the tone comes in to the spectrum analyzer at -55.6dBm
On Tue, Aug 3, 2010 at 12:04 PM, Matt Ettus <address@hidden
<mailto:address@hidden>> wrote:
You are seeing uncompensated DC offset. What is the actual power of
the tone?
Matt
On 08/03/2010 10:12 AM, George Nychis wrote:
I have a WBX, and I've noticed that no matter what I transmit,
the WBX
always introduces a very narrow (but full-power) tone at the
center of
my spectrum. When the transmitter is disabled, the tone is not
present.
This can be seen below, where I'm transmitting a stream of
complex(0,0),
yet it still transmits this tone in at the center (520MHz):
spectrum.jpg
Has anyone experienced this before with the WBX board? I've
confirmed
it's only my WBX board by using the same USRP2 board and trying my
RFX2400 and XCVR2450 with the same transmit script and sample
stream and
neither see this problem.
I am using the latest USRP2 firmware that includes the WBX
support, and
the newest GR git. It's possible that the board is defective in
some
way... but I thought I'd punt it to the list to see if anyone
else has
seen the issue.
- George
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