DMM PXI 4070 synchronis​ation trigger généré par PXI6229 (Daq M)

Bonjour,
Je cherche a synchroniser 2 DMM PXI 4070 avec un trigger interne.
Les 4070 ne génerant pas de trigger, je me tourne vers une Daq PXI6229 pour le générer.
ci-joint, le code qui ne fonctionne pas, mais qui donne une idée de la fonction...
Quelqu'un pourrait-il me dire ou est l'erreur ?
Les entrées trigger des PXI 4070 sont notifié TTLx ; faut-il router le signal généré par la 6229 ? et sur quelles lignes ? (dev1/pxi_trig0) ?
 Merci.
Ludis
Résolu !
Accéder à la solution.
Pièces jointes :
DMM_PXI4070_Sync.Trig_PXI6229.vi ‏30 KB

Bonjour,
La méthode proposée est correcte: il s'agit en effet de générer un signal créneau avec la sortie compteur0 de la carte DAQ et d'utiliser ce signal créneau en tant que trigger pour les 2 cartes DMM.
Le routage du signal peut se faire en externe (cabler physiquement le terminal Counter0 Output de la carte DAQ à l'entrée TRIG de la DMM et choisir cette entrée au niveau de la configuration du trigger de la DMM) ou en interne.
Pour router le signal en interne, il faut utiliser un noeud de propriété de voie pour la tâche compteur afin de reconfigurer le terminal de sortie (voir pièce jointe). On choisira par exemple "PXI Trigger line 0". Au niveau de la configuration du trigger sur la tâche DMM, il faudra choisir en tant que source de trigger la même ligne (TTL0 = PXI Trigger Line 0).
Cordialement,
Thomas B. | CLAD
National Instruments France
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Pièces jointes :
Reconfiguration du terminal de sortie du compteur à l'aide d'un noeud de prop.png ‏20 KB
Counter Pinout - terminaux par défaut.png ‏40 KB
trig source property.png ‏65 KB

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