We are looking to retrofit a Trio controller to a 3 axis CNC machine which has heidenhain analog incremental linear encoders fitted (1Vpp - 40um linear period) but unsure which if any controller has this function available. Can you advise please - thanks

That encoder signal is not compatible with any of our encoder inputs. We have standard ABZ 5V RS422 differential inputs for incremental encoder and SSI, EnDat, BiSS and Tamagawa interfaces for absolute encoders.