05-08-2014 11:49 AM - edited 05-08-2014 12:11 PM
I'm using PXI-5412 Arbitrary Waveform Generator, and would like to generate a multiple marker on PFI1 and PFI2.
I found a post mentioned about multiple marker generation with script mode, but PXI-5412 does not seem to support script.
Also, I would like to have longer marker, which I'm thinking to use some kind of blank singal during wave form generation.
But again it requires me to use a script mode.
Does anyone has thoughts?
(Exporting multiple markers in arbitrary waveform mode)
http://forums.ni.com/t5/Signal-Generators/Exporting-multiple-markers-in-arbitrary-waveform-mode/td-p...
(How Can I Make the Marker Event Pulse Width Longer in NI-FGEN?)
http://digital.ni.com/public.nsf/allkb/B7DD0517E33CEEB086257A6400614466
05-09-2014 11:29 AM
Unforunately, as you mentioned, the PXI-5412 does not support scripting mode. This will limit you to 1 marker using sequence mode. However, the PXI-5421 and PXI-5422 would allow the functionality.
As far as making the pulse width longer, and as the KnowledgeBase Article that you linked to discusses, I don't think it will be possible to create a marker as long as 1us - 10ms using just the Marker properties and without using scripting. You can still try to do this with property nodes and see if you can get a usable result. Start with an example such as "Fgen Arb Waveform Marker" and use the "Marker Position" value to set the start time (you would want 0 here it looks like), and then "Marker Event Pulse Width Value" to change the pulse length, but again I am afraid you will probably reach the maximum of 640 ns here. If you're not able to get this going with the property node, you will need either a FGEN card that supports scripting or another card that does Digital I/O to accomplish this.
Thanks!