01-08-2014 07:34 AM
I'm trying synchronize two 9178 cDAQ chassis but I'm not sure how to go about it. I have both digital and analog modules in the chassis. The white paper on NI website seemed pretty simple but missing some details. It states to connect the PFI lines which are the two BNC connectors labelled TRIG0 and TRIG1. Use one chassis to export your sample clock and trigger signals and use the second chassis as the input. However, I'd like to create a task in MAX but I don't how to go about it. Any assistance will be appreciated.
Thanks
01-09-2014 09:45 AM
Hi SoIPS,
You will not be able to do this in MAX without a specialized module (NI-9469). This is because MAX does not allow for you to route internal lines for the separate devices. Have you tried the shipping examples in LabVIEW? I believe there is one for synchronizing multiple devices.
01-09-2014 09:49 AM
Hi SoIPS-
Which modules are you trying to synchronize, and at which sampling rates and shared clocks/triggers configurations?
David C is correct that our highest quality and most versatile synchronization options for multiple CompactDAQ chassis are enabled by the NI 9469, but you may be able to accomplish what you're trying to do using just the PFI connections, depending on your use case(s).
Hopefully this helps-
01-09-2014 10:01 AM
One clarification: I meant that you may be able to accomplish what you want to do by programmatically configuring some task options. David is correct that you almost certainly won't be able to do this in tasks configured in MAX, but hopefully we can give some advice on doing things programmatically so that tasks configured in MAX aren't the blocking point.