ad2 No Internal Trigger

[ColinDJ]

Hi All

I used AD2 with a Digilent Impedance Add-on board,  and absent-mindedly pulled it off while it was still on and active!

The result is that, although the impedance measuring process works ok, and I can use the wavegen 1/2 on the scope 1/2 with jumpers externally, it won't trigger internally now.

A curious thing is that in Static DIO, the pins react with a flickering when I run my fingers along the pins.

Looking at the CCT, it seems I could have damaged the internal digital 3.3V supply, IC30 AD2503, which just seems to be for the diode protection ccts of the dio's.

What to do do now?

I Re-installed Waveforms, reset calibration...

[JColvin]

Hi @ColinDJ,

I have moved your thread to a more appropriate section of the Forum where the engineer much more experienced with the Analog Discovery will be able to see your post.

Thanks,
JColvin

[attila]

Hi @ColinDJ

I don't think the device is damaged.

The internal triggering is solved inside the device main FPGA IC.

The digital lines are by default inputs in high impedance, so it is normal to flicker on touch.

When used with the IA module, the digital lines control the relays.

[ColinDJ]

Hi Attila

Sorry to bother you! This has been on my wishlist forever...

All good - I'm not understanding trigger situation - now do!

AD2 is an amazing instrument - unbelievable to fit so much in just like a smartphone, only better