Factory400
Solar Enthusiast
- Joined
- Jul 15, 2020
- Messages
- 387
The scope is to measure noise on the inputs and the ADC input and a few places along the chain. I don't really care about the schematic as much as understanding what is going in and what is coming out.I don’t think getting scope measurements will help much. I would buzz it out and generate a schematic. The heart of the BMS is the cell voltage measurement.
I have a 6Ghz low-noise scope with great probes which allows me to see before and after. If the bulk of the apparent noise is in the analog domain, I may just bodge a filter in there. Obviously, I don't need 6Ghz, but the low-noise spec is handy for this along with a pair of LeCroy differential amplifiers.
Like I have mentioned before - if the analog section sucks, the ADC can't bail you out.