Calendar synchronized with Diuble pulse using PCI-6601

Hello

I'm trying to run a PIV of Labview 8.5.1 system using a PCI-6601 map at the exit of the signals for the laser and the camera.

This requires a line for the camera, one for the FPS (first removal of pulse) and one for the Q-switch.

The difficulty is in the need of a double pulse on the Q-switch for mode double frame PIV.

The distribution box that I use is not one NOR one and I don't have access to 3 outputs four against, otherwise, quite simply, I would use a BNC t with two pulses slightly staggered junction.

I have access to a BNC-2110 timing box, but I think it is not compatible with the PCI-6601 and have no funds to buy a BNC-2121 right now.

I managed to create a double pulse by using one of the counters with a finite number of impulses set to 2 and then stop the task, then run this in a timed loop.

However, it is then based on the software, which is not precise enough for the application, and I can't figure out how to get the timed loop to run from the time of 20 MHz of 6601 map base.

I could be missing something obvious here, or perhaps is more annoying? I'm fairly new to DAQmx.

Thanks in advance

Joe

Dominic makes a good point about the operating system, but really the best solution is to use the hardware timing when possible.

I have set up an example that shows how you can implement different sets of impulses finished using the calendar of the Commission.  It requires the use of two meters, but then again a generation of impulses finished the fact (on the 6601).
Communities: Generate several Cycles pulse finished using two counters

Alternatively, if you have another signal that you want to use to trigger each set of pulses (rather than to specify a rate so that they occur as in the example above), counters on a 6601 are redeclenchables then you can use the external signal to trigger the generation over time and time again without having to stop the task in the software.

Best regards

John

Tags: NI Hardware

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