Using of Measure buffered Period(DAQ-STC).vi for PCI-6025E board

[lyn]

I am using the Measure buffered Period(DAQ-STC).VI in Labview 6 to get the period of an external signal(Digital I/O pin). How do i configure the vi to measure this I/O pin (eg:PA3)

What does the Counter Gate(STC).vi in the Measured Buffered Period do? what does the Gate specification refers to?

thks & best regards

[JB]

Your questions are answered in the help of the VI (CTRL + H or Menu --> Help --> Show Context Help).

1) Source specifications : (text from the help)
Optional controls are located on the left side of the front panel. You will have to use your scroll bar to reach these.

You cannot use the digital I/O lines. See the user manual of the card for the corresponding pins of the PFI lines.

2) Gate : (text from the help)
The counter increments its count everytime a pulse comes into its source input, and transfers that value to memory upon every time a rising edge comes into its gate input.

The Gate specification control allows you to change this. (other pin, falling edge...)

[lyn]

Thks for the help JB,

understand that the counter will reset itself to zero after it store the count to the memory, is there a way to make the counter continue counting and reset to zero only if counter overflow?

it is possible to count how times the counter overflow?

thks and best regards
lyn

[JB]

Do you really want to make a buffered period measurement ? In this case, the counter increments (clock given by internal time base) between two rising edges of the signal at source. So the counter must reset before starting every new measurement.

Obviously the counter will not reset in a buffered event counting measurement.