I have a V2 Nano.
The purpose of this post is two-fold, firstly a warning to take care with this part of the scope and secondly seeking some advice.
Last night, I mixed up the cables and exposed the signal generator output to a +/- 10v AC analog signal I was measuring. Since then, the frequency generator output has been compromised. I can still see the signal, but its amplitude is way down.
Looking at the schematic, I am almost sure I have fried the output stages of the 74HC125 that directly feeds the signal generator output. The spec for the chip suggests that it would not be impressed with the voltage range it was exposed to.
The chip looks like it could be replaced pretty easily, however, I don’t want to go hacking at the PCB if its unlikely to be the point of failure.
Any comments? Has anyone else had this experience?
@Seeed. This was very easy to do. I think if this is a vulnerability, you should either
- add a protection circuit or
- change one of the plugs/sockets to a different kind entirely or
- at least make the jack plugs a different color.