On 02/23/2010 08:46 PM, joon kim wrote:
Hello,
I have an issue with the amplitudes of two transmitted signals. I was
trying to implement 2 TX and 1 RX(MISO) and I found the problem that
these two RFX 2400 daughter boards that I am using as transmitters gave
me noticeably different amplitudes of the tranmistted signals. I
changed my motherboard(At school, there are at least 3 USRP), but it
had an exact same problem. Even, when I implemented 1 TX and 1RX(SISO),
the amplitude of transmitted signal from each RFX 2400 was not the
same. My amplitude value in my python code was exactly same BTW. Does
everyone has the same issue? Is there anything that I can do for this
problem other than approximately adjusting my amplitude value in my
python code? Please tell me if you or anyone has the answer.
Thank you,
Joon Kim
It's not unusual for analog gain chains to have small gain variations
in them. Just a fact of
life.
--
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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