measure pulse frequency with 4.7 volt peak amplitude

[MyKat]

used two shipped Measurment Studio Vb.Net 2005 Examples:

1-Example 1 : CountDigEvents  "MEASURES PULSE COUNTS" and Example 2: MeasDigFrequency_LowFreq1Ctr  "MEASURES PULSE FREQUENCY"

2-Example 1 works fine measuring pulse counts , however Example 2 did not recognize pulse frequency  , the pulse amplitude voltage is 4.7 volt peak

3-during testing used counter ch0 channle by connecting Sorce0 and Dgnd pins to signal source.

4-using Nidaqmx 9 and MIO-16xe-10 daq

5-pulse frequency around 10 khz

QUESTION:

-please advice what to do to make frequency measures ?

Thanks

[James-B]

Hi MyKat,

Note that the connections are different for edge counting and low frequency frequency measurements with one counter.  For the latter, you'll need to connect the signal to PFI 9 rather than PFI8 as you did for edge counting.

http://zone.ni.com/reference/en-XX/help/370466W-01/mxdevconsid/eseriessigcounters/

Regards,

[MyKat]

James,

Thanks .. works fine ..