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error iviscope configure trigger

Good morning,
 
I have a problem with the Iviscope trigger configuration.
I'm using a PCI-5105 Digitizers/Oscilloscopes to acquire 3 channels simultaneously.
 
I use IVIscope vi to realize the program.
Channels configuration is ok. But when I want to acquire the signals some problem happen.
 
on version 1.1 of my program the 3 signals are ok but not at the same time. (frequency 1 kHz, voltage +4V, +1V and +2V)
you can see Front panel v1.1 and diagramme v1.1
I don't understand why the signals are not acquired at the same time ?
 
 
so I do a second version using trigger vi. (see diagramme1 v1.2 and diagramme2 v1.2)
in this case the signals are not correct (Front panel v1.2)
here I want to use channel3 to trig the 3 other channels.
and with this version, sometime an error message appear (error message Configure Trigger).
Why the trigger channel doesn't work?
 
Best regards
Florent
 
 
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