rtdx data transfer rate between DSP and labview using usb communication

[mario_rojas]

Hi,

I´m using a DSP TI 6713  with usb data communication and I want to read an write data to Labview. Sometimes it works fine but others is too slow, but in general i think it responses slow. Do you kwon the data transfer rate by just using the usb cable?,  I don´t have any emulator.  I think it depends of labview because the time for exectution of a loop is in microseconds, and the DSP works faster.  So, if I need to read data captured by the target and display it in LAbview is it possible to work in real time?

[Oswald_Branford]

Hi Mario!

The DSP module is an add on of the main LV program. The max data transfer you can get by using the USB bus is 2 Mbits/s which is the USB speed. LabVIEW introduces some delay based on the programming you implement. To create a program in real time you need the LabVIEW Real - Time module and it will most likely improve the performance of your program. If you want to check on that, go to the task manager in Windows and select your LabVIEW program, right click and change the priority of your program. Check the speed and verify it improves. Maybe this link will help you:

http://zone.ni.com/devzone/cda/tut/p/id/3151

Have a great day!! 🙂

Oswald Branford