Is it possible to get transfer rates near the Target rate?

In the past when using RT, I was dealing mostly with static data. In this application, I have four accelerometers which need to be monitored in addition to the static signals. When targeted, my update rates are blazing fast with no problems. When I run the RT communication wizard, and run the application my update rate is roughly 750mS. My guess is that it is on the Host side, but I am not certain that is the case.
NI must be implementing some sort of TCP communication in the background when targeting PXI. Does anyone have any idea, how to get speeds near the Targeted update rate?
I have 4 accel's coming in on the PXI-4472, I am taking 2000 samples at 20kHz. I am only sending the accel signals at this point I will add in my static signals later.

Thank you for your posting. It can be a challenge to get higher data rates over ethernet from high speed data acquisition rates. I have found that the communications wizard code, while effective in getting communications up and running quickly, adds more overhead to the application than is really necessary. An alternative is taking more control over the TCP/IP communications.
There is an example here that you may want to reference to architect your communications structure.
http://zone.ni.com/devzone/conceptd.nsf/webmain/0986799C984500F886256F170079411E
I use it to get 8 channels at 5kHz each from a 200mHz RT controller.
Let us know how this works.
Preston Johnson
Principal Sales Engineer
Condition Monitoring Systems
Vibration Analyst III - www.vibinst.org, www.mobiusinstitute.com
National Instruments
[email protected]
www.ni.com/mcm
www.ni.com/soundandvibration
www.ni.com/biganalogdata
512-683-5444

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