How to measure PWM signals duty cycle using DaqCard700

[9886745632]

Im involved in measuring the PWM duty cycle for a microcontroller application in the automotive field, and power convertion areas.I 'm using NI DaqCard700 which is based on the PCMCIA technology with ,LV 7.1,WIN2Kpro . I request ,if any one can suggest a paradigm and give some example code.

Thank You

[Jesse_O]

Hello,

Please take a look at the first few posts in the discussion forum found here. This customer wanted to perform a similar operation.  One solution is to acquire your data with an analog input operation and use the VI mentioned to perform the duty cycle measurement.

Please note that this discussion forum displays data acquisition in DAQmx.  Your DAQCard 700 is an older device and does use DAQmx or have standard support in LabVIEW 7.1.  To use your DAQCard 700 you must use NI-DAQ 6.9.3 which does not install support for LabVIEW 7.1 by default.  Please see the instructions here to install your device if you are having problems with this.

Finally, there are several shipping examples that demonstrate how to perform data acquisition in traditional DAQ.  You can find these in NI Example Finder under Hardware Input and Output.  You can find NI Example Finder under the LabVIEW help menu.

Regards,

Jesse O.
Applications Engineering
National Instruments