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DsLogic Plus - Trigger on high signal on any of 4 channels

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eTobey:
Hi,

i cant figure out how i can make it trigger, when one channel is high. It does trigger immediatly, even when the circuit is off (all signals are low). It does so on changing edge or high signal as trigger. Setting a higher counter value (counter of triggere events) does not help.

Note there are two decoder "channels" (marked with D in the arrow).

See picture attached.

Anyone has a clue here? Is anyone using this software at all?


LarryMartin:
Try using a trigger of "not zero" instead of "all ones" in the first condition, and also change your "Or" combination logic to "And".  The reason you're getting an immediate trigger is the "Or" combination with the second condition of all "don't-care" bits, which would always be true.

I've just started using a DsLogic U3Pro16 this week and so far I haven't been disappointed.  I did have a software crash early on, but the hardware has worked as advertised.  I did find it helpful to read the full user guide to better understand how the triggering is configured.  It's way more flexible and capable than the Saleae Logic8 that I've been using.  (Although that might still be my choice for simple UART/SPI/I2C streaming.)

eTobey:
That works.

But is there a way to detect any changes on those four, without knowing the previous state?

LarryMartin:
Use the 'C' trigger condition to match any change.  Other conditions are also available per the legend in the Trigger Setting window.

eTobey:

--- Quote from: LarryMartin on December 02, 2024, 12:13:16 pm ---Use the 'C' trigger condition to match any change.  Other conditions are also available per the legend in the Trigger Setting window.

--- End quote ---

This does not work with four channels, as the trigger starts immediately. At least with the settings on your screenshot (zeros replaced with C`s).

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