04-29-2014 10:27 PM
Hi,
goodafternoon,
By using the attached file i wanted to read the frequency of the signal " the signal is pulses"
i have done it and record the reading in excel files
if u check the excel files u will find high values but on the oscilloscope the value for file frequency100 and frequncy101 should be between 430hz to 460hz but in the file it is very high .
can i know what is the problem please ?
i am using cDAQ-9188 with digital input 9401
i connected the signal to pin#14 and the com to the ground of the driver
Note i have emailed 2 emails before this email and there is no reply since last week, any one can help me in that ?
thanks
04-30-2014 12:25 PM
You're probably picking up noise.
Try adding digital filtering to your application (see here). You will have to use the lower-level DAQmx API instead of the DAQ Assistant.
Best Regards,