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RPL1116 (MSO1000Z) and PLA2216 (MSO5000) Active Logic Probe teardown

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pmnxis:
also i had same issue.

dren.dk:
Sorry, I fell off the project and just came back to the thread, cool to see that people have actually built the boards!

I just did a basic smoke test and put the project on the shelf, so I never noticed that some channels were inverted, what an embarrassing mistake to make.

I wonder where the error was made, I guess I'll have to do some measuring to figure out where the signal is swapped, but the only way it could be someone elses fault than mine is if it's the pinout I used for the scope.

The best solution would be to redo the breakout board, but it ought to be possible to swap the affected pairs in the cable and put the connector back on.

pmnxis:
Thanks for comeback and your participation for made them!.

There's another issue that some channel cannot change state or mixed remarkable noise.
I cannot sure mine was broken while connect cable with wrong angle with short time.
or cable or assemble is strange.
I will try to figure out what was problem
I hope there's no problem on my scope :)

BTW are there any people have same noise issue like me?

gizmo5418:
Hi,

I have noise if I have a "PCB Breakout" attached without connected logic probes.

pmnxis, connecting the ISP programmer at the same time that LA was connected to the oscilloscope was probably not the right solution.
Preservation of my oscilloscope with "PCB Breakout" plugged in without logic probes:

pmnxis:
thanks for you pictures.
Mine got some "too much" noisy issue on 6th channel when didn't connect cable 0to7 channel.
BTW I solved issue that channel 1ch(start from zero) didn't work.
I was soldering each only one point to 2 bypass capacitor near the MCU.
and re-soldered array capacitor. and then it works.

for now, a left issue is a known issue. some channel is inverted.
hope it would be nice fix later. but I think that's not immediately to me and enough for see extra point for change or triggering something. :D

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