PXIe-6738 Analog Output Update Rate, Banks vs. Channels

[Clark12]

Howdy Folks,

I am trying to understand the update rate for the PXIe-6738. The online documentation provides different update rates depending on how many channels are in use, and in a footnote, it states:

"All analog output channels are grouped into banks, as shown in your device pinout. Each bank consists of four AO channels using one DAC. Any channels being used within a single bank will update simultaneously."

I am trying to determine if the PXIe-6738 is capable of simultaneously updating 32 distinct outputs. I am skeptical of the statement that any channels within a single bank will update simultaneously because the block diagram from the user manual (below) shows a single DAC associated with each bank of four channels. Does anyone know if the PXIe-6738 is actually capable of simultaneously updating 32 distinct outputs? Or is it effectively limited to simultaneously updating 8 outputs? Any clarity or insight would be greatly appreciated.

Thanks folks.

From the device manual:

[ColinJRMoore]

Hello,

Did you receive an answer to this question?  I am also wondering the same thing, I purchased an NI-6738 and it's in transit but I just came across the fact that there are only 8 DACs.  Is it possible to send 32 separate voltages?

[santo_13]

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@ColinJRMoore wrote:

Hello,

Did you receive an answer to this question?  I am also wondering the same thing, I purchased an NI-6738 and it's in transit but I just came across the fact that there are only 8 DACs.  Is it possible to send 32 separate voltages?

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You can send 32 separate voltages but each DAC will be scanning across 4 channels in a bank