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USB data transfer speed problems in DSA91304a

Question asked by zhaopeng on Oct 7, 2013
Latest reply on Oct 7, 2013 by vcherian
Hi, I have a DSA91304A scope and am using Matlab to control this scope throught its USB2.0 port.
In Matlab I use "binblockread" after ":WAV:DATA?" to fetch data from it, however, the data transfer rate seems too slow.
I have 2000 points (interpolation turned off) with 16 bit resoution, it takes 12ms to transfer this data.
Using these number the calculated transfer rate is around 0.3MB/s, much slower than expected 50MB/s for USB2.0.
The PC port is also USB2.0.

This problem is driving me crazy as this data transfer is inside a very large loop.
Does anybody have any idears if this is the right data transfer speed for this scope or there is anything I can do to make it faster?