Hi again, On Thu, Nov 24, 2022 at 7:09 PM Oliver Hartkopp <socketcan@xxxxxxxxxxxx> wrote: > I assumed "termination 0" results in "termination off" (=> no > termination => very high resistor value) but in fact it gets around 20 > Ohms, which is a pretty heavy termination for a CAN bus. I've checked with one of my colleagues and he told me I measured it wrong. Here is a correction. You can find the schematic of the analyzer in its user's guide https://www.microchip.com/en-us/development-tool/APGDT002 or directly at https://ww1.microchip.com/downloads/aemDocuments/documents/APG/ProductDocuments/UserGuides/CAN-Bus-Analyzer-Users-Guide-DS50001848C.pdf The schematics is at page 11. Basically the "termination" controls the CAN_RES signal. When it's low, R24 and R25 are connected to the bus. They are 56 Ohms. With my patch, "termination 120" drives CAN_RES low and the resistors are active, and "termination 0" drives it high. -- yashi
