Six different PWM signals generation with a PCI-MIO-16E-4 card (E-series DAQ card)

[sbae@ece.utexas.edu]

Hello,

         I am a new labview and NI DAQ user. Unfortunately, I need to generatre six PWM signals with an old E-series DAQ card, PCI-MIO-16E-4. In details, those six PWM signals will be used for the driving signals of IGBTs. Six PWM signals have different duty cycles, and delay time which means that they are not synchronized. I found the example code which is generating four different PWM signals with M-series hardware. But, I could not use that code because of the functionality.

        Could I generate six PWM signals with digital output channels of the E-series DAQ card? I am not sure whether the hardware supports this functionality or not? Or is it matter of the VI programming?

Thanks,

Sungwoo

Message Edited by sbae@ece.utexas.edu on 05-07-2009 09:24 AM

Message Edited by sbae@ece.utexas.edu on 05-07-2009 09:25 AM

[DavidMN]

Hi Sungwoo,

No.  The E Series DAQ cards cannot support PWM signals on its digital outputs.  You can create a pulse train on said channels, but the frequency and duty cycle would not be accurate.  However, if you were to obtain an M Series card, you would be able to use correlated digital output to generate the PWM signals.