AnsweredAssumed Answered

EVM jumping up

Question asked by parisa on Oct 30, 2012
Latest reply on Oct 31, 2012 by parisa
I am trying to measure the EVM at 2.4 Ghz 0dBm scale for a qpsk modulation. I see a pretty good EVM measurement most of the time, but in 6 rounds of testing of the same device I see a big jump which I believe should be noise.does anybody know what might be the cause other than noise or knows the solution? 

first I was measuring at 20dBm, the percentage of jumps was really high so I changed it to 0dBm it helped a lot bot still jumps sometimes.