I guess another approach is to find the communication chip the unit uses (like a Max3491e) and tap into that. Meaning, tap into the low voltage side. The unit does not use those levels on the chip. It has to go through a series of filters and lower the voltage to 3.3 (or maybe 5) before it can be used. Look for that and tap in there.
New to BP3.6 a really nice tool to have. I want to use this to listen in on a RS485 line that uses RX+, RX-, TX+, TX- for signaling. How do I accomplish this with the BP? Should I convert the signals to RS232 before connecting the BP? Ah, and drop voltage down... Pretty sure it would be CMOS RS232 levels.. I think 12v.
