How can one counter be sources (or gated) with the output of the other?

I'm trying to use the counters to generate a square pulse train that contains a certain number of pulses (on 6036E). For that I need to gate counter0 with the output of counter1. The manual seems to indicate that I need to use
GPCTR_Change_Parameter (deviceNumber, ND_COUNTER_0, ND_GATE, ND_COUNTER_1) ,
however it makes no difference to the output; I see no gating. What am I doing wrong? Am I missing something?
I would also like to source counter1 with the output of counter0. There's a similar function call to choose the source signal, but so far I've been unable to source a counter with anything but the internal timer. I guess the reason for it might be the same as the gating problem.
Petro

Hi Petro-
This example shows how to output a finite gated pulse train on an E Series board. It mentions that it is a CVI example, but the main .c file does not include any CVI-specific functionality so it should work if you're using ANSI C.
Equivalent functionality is available in NI-DAQmx for your board and is considerably more intuitive. An example of pause-triggered pulse train generation is available in the "C:\Program Files\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Counter\Generate Pulse\Dig Pulse Train Cont-Pause Trig" directory of your local drive. One method to generate the "pause trigger" pulse train is shown in "C:\Program Files\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Counter\Generate Pulse\Dig Pulse Train-Cont" .
I'm not sure what you mean when you say "I would also like to source counter1 with the output of counter0." What do you need to perform this operation for? The reliance of counter 1 on counter 0 and counter 0 on counter 1 creates a type of circular reference that is almost guaranteed to be problematic.
Hopefully this helps-
Tom W
National Instruments

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