AnsweredAssumed Answered

VSA 89600 RCE (EVM)

Question asked by Roman1979 on Feb 17, 2008
Latest reply on Apr 2, 2008 by KenVoelker
Hi,
I tryed to get EVM measurement of OFDM signal and encountered the following problem:
While transmiting data at low rate (lower screenshot) there is a signal which contains only 2 symbols per frame , i get RCE reading of ~-39 dB and if i transmit data at higher rate (upper screenshot) there is a signal which contains 29 symbols per fame i get RCE reading of ~-34 dB.
I connected another measurement device (SanJole wavejudge) and it gives same RCE reading for both cases which is close to -34 dB.

Is it possible that 89600 doesnt give accurate reading at low rates ?
Is there any solution ?

Thanks  

Attachments

Outcomes