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On Sat, Dec 7, 2019 at 10:06 AM, <forfoum@...> wrote:

This hysteresis is the amount of change from BEMF before it moves to next (+/-) notch.? Default is 80 (0-255). For use in "Prototype Throttle Mode" only.

Marc: I'm not familiar with TCS but from what you say their manual is not using the word "hysteresis" as it is generally defined. As Chuck says, hysteresis exists when one value of an input results in different values of an output depending on whether that input value was set by increasing a lower value or reducing a higher value. In decoder terms, Notch 2 speed would be different when notching up from 1 than notching down from 3. Hysteresis is what's left over after all the time delays of momentum have faded away when making a speed change. It is different to momentum but could mask it so confuse and complicate the process of speed matching.

Jan

Thanks guys! So for speed matching, I’ll set it to 0 and probably keep it at zero unless I consist it with other TCS equipped locos.

Paul

Sent via iPhone

Jan, All I am indicating is what dug up in the TCS decoder manuals regarding Hysteresis (or hysterasis)?? as it applies to the WOW decoder as I believe this is were the question came up from.? The thread had no mention of "hysteresis" in it until? Paul threw it out there.? So I assumed it had to be TCS WOW related.

The proper spelling is HYSTERESIS.? The typo is in the WOW decoder manual and throws a curve when one is searching for the proper definition/use of HYSTERESIS as it applies to the WOW decoder.

It is a SOUND related setting? that? takes it? value from BEMF.. The default value = 80.. so a difference (either - or + ) of 80? will increase? or decrease? the current notch rate.? That is how the TCS WOW manual
seems to describe the " HYSTERESIS "? (or HYSTERASIS? if you look in WOW manual) .? And as I stated, it only applies to one Throttle? mode, Prototype throttle mode, auto notch.

TCS video on? Throttle modes :?? .? Unfortunately, no mention of hysteresis in it?

Marc?