On 07/12/2016 06:15 PM, Pavan Yedavalli wrote:
Hi,
I was doing a quick test to see whether all of the USRPs are
transmitting at the same level, so I did a single setup where I
connected each USRP's Tx/Rx output to a spectrum analyzer (with
attenuations). After sequentially doing it, I am getting up to 5 dB of
variation across different USRPs. Is this expected?
For instance:
USRP1: -16.x dB
USRP2: -19.x dB
USRP3: -14.x dB
USRP4: -16.x dB
Note that I'm disconnecting the same cable and reconnecting to each
USRP, so that is constant, as well as the exact same code (with just
changing the address of each USRP). Should I double check some
connections or is this variation expected? It seems too high for it to
be expected. Please keep me posted. Thanks.
--
Pavan
Variability of a few dB is normal in RF gear, particularly as you go up
in frequency.
Are these all the same types of USRP, with the same types of
daughtercard, at the same frequency?
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