PXIe-6363: Capturing digital waveform using same waveform as trigger

[VNF]

I want to capture a digital waveform using the PXIe-6363 internal clock at 2 Msamples/sec, triggering on a high-to-low transition of that digital waveform. I understand that the digital waveform needs to go to a PFI input (P1 or P2 port) in order for it to be a trigger.  The "Digital Waveform Acquisition" section of the user manual says "You can acquire digital waveforms on the Port 0 DIO lines". So, I have two questions:

1. Can the waveform be sampled using the same PFI input that is used for the trigger or do I have to also route the waveform to a different input for sampling?

2. The user's manual implies I have to use P0 to capture a digital waveform.  Is that true?

Thanks

[ZYOng]

1. Can the waveform be sampled using the same PFI input that is used for the trigger or do I have to also route the waveform to a different input for sampling?

You can configure the same acquisition channel as the trigger source.

2. The user's manual implies I have to use P0 to capture a digital waveform. Is that true?

Digital waveform is only supported on P0 in PXIe-6363.

[Kevin_Price · Accepted solution]

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@ZYOng wrote:

1. Can the waveform be sampled using the same PFI input that is used for the trigger or do I have to also route the waveform to a different input for sampling?

You can configure the same acquisition channel as the trigger source.

This isn't correct for DIO on X-series because trigger signals require a terminal with PFI functionality, and none of the X-series PFI terminals support waveform DIO.  You would have to parallel wire to both a DIO terminal on port 0 *and* a PFI terminal.

2. The user's manual implies I have to use P0 to capture a digital waveform. Is that true?

Digital waveform is only supported on P0 in PXIe-6363.

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Agreed.

-Kevin P