# Discontinuous problem with usrp b200

**URL:** <https://www.ruby-forum.com/t/discontinuous-problem-with-usrp-b200/233312>\
**Category:** GNU Radio\
**Created:** [December 3, 2014, 11:39am UTC](https://www.ruby-forum.com/t/discontinuous-problem-with-usrp-b200/233312 "2014-12-03T11:39:20Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [December 3, 2014, 11:39am UTC](https://www.ruby-forum.com/t/discontinuous-problem-with-usrp-b200/233312/1 "2014-12-03T11:39:20Z")

</div>

Hello guys,

I am trying benchmark\_tx and benchmark\_rx examples (both narrowband and  
OFDM) on B200 with --discontinuous option. However, I am not succeeding  
in receiving any packet even though I played around with the Tx and Rx  
gains, bitrate, bandwidth, etc… Please I need your suggestion.  
I am also wondering whether this problem has anything to do with DC/IQ  
calibration. BTW, the examples are working great in continuous mode.

Thanks in advance,  
Fadzli