Hello all, I have been trying to perform ranging between nodes using time-of-arrival of signals. To this end, I am trying to transmit an accurately timed pulse using the USRP. My initial experiment simply sends out a 100 ms burst every 1 sec. I am then recording this signal using NI PXIe-5663 front end for analysis. Everything is working out fine, except that I am seeing some wild transients at the beginning of the burst for several nanoseconds.
I am attaching some plots that show this behavior at http://imgur.com/a/C0Ynq. The falling edges of the burst are very sharp. I would like to get something like that on the rising edge too. In another post on the list ( https://lists.gnu.org/archive/html/discuss-gnuradio/2012-06/msg00312.html), Josh said that "*If you are seeing transients at the beginning of a burst, thats probably the half band filters. They are implemented in block ram and don't clear **between bursts.*" Is this the reason I am seeing these transients? Is there anything I could do to correct this? Thanks, Lakshay.
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