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NI-6025E counter Wait on Occurrence

Hi,
I´m beggining with Labview using a NIDAQ-6025E device and Labview v6.1.
Now i´m trying to implement a "Wait on occurrence" for a counter change,
but it doesn´t seem to work.

The counter´s source pin is driven by an external signal and there´s no
problem when reading the count value. But when I use "Daq occurrence config" VI
with Daq event 4 (counter event), I can´t detect any transition.

This VI´s help explains that, for aperiodic external events, you must set
the output of the counter to high impedance with CTR Control VI, but I
haven´t found the way to do that (CTR Control VI doesn´t appear as it is
explained, there are some similars without high impedance option).

How can I use occurrence with counters in a NI 6025?
Will the "wait" control code in "Counter Control" VI function for
detecting external hardware events? I don´t understand how to use it.

Thanks for the help.
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