Question about Encoder Scale

MATZE-ATZE-SCH wrote: Hi PCW,

the Voltage between A /A B /A and GND is 300mV or 3.2V.
Between A and A/ or B and B/ is between -2.8 and 2.8V.
Is this correct?! Also, if A /A is 2.8V, b /b is also 2.8V. Didnt B /B need to be -2.8V?

Best regards
Marcel

Sorry, i thought PCW is more experienced with this so i did not reply.
That seems all good.

Hi tommylight,

ok, thank you.
Hmm, I think the next think I try is to reinstall LinuxCNC with a fresh new .hal and .ini . Don´t know what else I can do to try to solve the Problem?

Best regards
Marcel

Re-installation is not likely to do anything other than waste time (what would it change?)

If you can move the axis slowly enough it might be valuable to plot the A/B encoder signals in halscope to check for valid quadrature.
( 90 degree phase shift between A and B )

if A /A is 2.8V, b /b is also 2.8V. Didnt B /B need to be -2.8V?

No, with quadrature, A and B can be in any state depending on where you are in the cycle: