Trouble with PdCommX in LabView

Hello,

I work on a traverse system which should position a Vectrino and measure the velocities at this location. I try to realize this in LabView and for the communication with the Vectrino I use the PdCommX.

First I've tried to take some samples using the demonstration program but this doesn't work properly. The velocity data isn't displayed continuously. Sometimes the data doesn't change over 5-30 samples. I've attached a example plot of this issue.

I've tried differend baud rates and sampling rates without success.

The original Vectrino software runs properly.

Firmware 1.29

PdCommX 1.39 beta2

Thanks in advance

Malte.