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Dangerous Prototypes

Other projects => Open Bench Logic Sniffer => Topic started by: MotoDog on May 13, 2010, 06:05:49 pm

Title: Still see all Low Levels
Post by: MotoDog on May 13, 2010, 06:05:49 pm
Sniffer still not showing signs of being dead.  My last post is working its way to the bottom with no suggestions.
I am testing with 5V Pic counting.

Can someone describe what should happen with the Arm and Trig Leds when they hit the Capture?
Before and after?
Mine changes once in a while, not each time?
Can someone suggest a test that tests each of them?

I since have tried jumping a 3.3V on board voltage to Ch0 and still see low.


Thanks
Mike
Title: Re: Still see all Low Levels
Post by: MotoDog on May 13, 2010, 06:32:49 pm
With 3.3 V on Ch0 and no trigger, I hit the re-capture S and it recaptures LOW still.
I never see the Leds change to ARM and then to Trig?

I finally can see a signal on Ch0 if I set up triggering on it and take the jumper to 3.3V off and on several times.

I can see when it finally triggers?

???
Mike
Title: Re: Still see all Low Levels
Post by: ian on May 15, 2010, 04:57:04 pm
Hey Mike, sounds like the buffer chip might have been damaged. Please contact Seeed for a repair or replacement .
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