Using PXIe-6672 to send trigger to PXI-6682H using NI sample code

I have a PXI-6682H and a PXIe-6672 card in a PXIe 1075 chassis. I have an IRIG-B timesource going into the PF1-0 IRIG B connector on the 6682H. I'm trying to use the 6672 card to route a trigger to the 6682H card to receive an IRIG-B signal and supply a timestamp. I'm using the example code Time Stamp Trigger.vi (to set the 6682H to receive a trigger via PXI_Trig7 for 6682H PXI slot) and Route Software Trigger.vi (to set device in slot corresponding to the 6672 to PXI_Trig7). I receive no timestamp. What gives? Any help would be appreciated.

Hello jwins,
The PXIe-1075 is a multi-segment chassis and the PXI trigger bus is split between each segment. The figure in page 17 of the PXIe-1075 user manual (http://www.ni.com/pdf/manuals/372537b.pdf) shows this.
Can you retrieve a time stamp by sending a trigger to the 6682H from a device on the same segment? If so, you may need to route the trigger bus between segments.
Follow the steps in the knowledge base article titled Routing PXI Trigger Lines Across the Buses of Multisegment PXI Chassis to route the PXI trigger bus to the segment that contains the 6682H card from MAX.
You can also use VISA in your program to Programmatically Route PXI Trigger Lines Across a Multi Segment PXI Chassis.
Anthony F.
Product Marketing Engineer
National Instruments

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HI all,
I have this sytem configuration:
PXIe-8135 controller. Windows 7 64-bit, RFSA 2.7.5. NI-SYNC 3.4.1
PXIe-1075 chassis
PXIe-5663 (2x)
PXIe-6672 Timing & Sync Card (slot #10)
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Then, the PXIE-6672 card routes the trigger to the backplane of the PXIe-1072 (Destination "NISYNC_VAL_PXITRIG0")
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Serge Malo, ing.
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T (514) 842-7577 x648 | [email protected]

That explanation isn't quite right. Usually, even PXIe modules have a connection to PXI_Star. The PXIe standard added the PXIe_DStar trigger buses, and it also preserved the PXI_Star bus from the PXI standard.
However, there is an additional twist in this situation. I'm assuming that your PXIe-5663 includes a PXIe-5622 as the digitizer. It turns out that a synchronization technique called NI-TClk has eliminated the need for our more recent digitizers to rely on triggering from PXI_Star. I was able to find some documentation that includes this information, here and here. Given that, I think you have two options that should result in better synchronization.
The first option is to use TClk; I found an example program that demonstrates using TClk to acheive phase coherent signal acquisition across two 5663s. The second option is to use cables of matched length to connect two PFI front panel terminals of the timing board (6672) to the PFI1 front panel terminals of the digitizers (5622). The timing board would accept the external trigger on PFI0 and then issue triggers on PFI1 and PFI2 with around 500 ps of skew (manual, page A-4) . The digitizers would use NIRFSA_VAL_PFI1_STR as the trigger. I hope one of these solutions will meet the demands of your particular application.
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Attachments:
Echo_Mode_PXI_5122.vi ‏49 KB
Pulse_Echo_Mode_PXI_5122.vi ‏49 KB

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Message Edited by Ali M on 05-25-2010 02:07 PM

DMM PXI 4070 synchronisation 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 ?
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Résolu !
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Pièces jointes :
DMM_PXI4070_Sync.Trig_PXI6229.vi ‏30 KB

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Cordialement,
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>> Inscrivez-vous gratuitement aux Journées Techniques : de l'acquisition de données au contrôle/com...
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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Using PXIe-6672 to send trigger to PXI-6682H using NI sample code

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