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USB-8452 USB 2 SPI box not communicating continuosly

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Hopefully this is the correct forum.

 

I have a USB-8452 that I am using to talk to some equipment with over a SPI bus. The problem is that when increasing the clock rate, that doesn't speed up the communication as a whole.

 

Scope captures....

Clock at Lower frequency (KHZ)

It looks ok but has pauses between the bursts of 8. (It's writing from an array of 8-bit unsigned as the out of the box VI requires)

Clock @ Lower Frequency.png

Clock at Higher frequency (MHZ)

The clock speed increases but the breaks between the communication remain the same.... this seems totally wrong to me.

 

Clock @ Higher Frequency.png

Can anyone offer insight on how to correct this so it's a continuous clocking of data?

Thanks,

Kellen

 

 


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