The by-definition "disabling" of Audio Assist is not possible in Version 4 and older WOWSound decoders; however, there are workarounds...
The
Mute function is tied together with Audio Assist on Button 8. If you use CV
programming to map the mute "sound" to any other button other than
button 8, you will now have a mute function independent of Audio Assist. At
this point, you can go in and remove the sound function of button 8, meaning it
will no longer mute the decoder. This workaround should prevent users from
accidentally entering the program while attempting to simply mute the decoder,
which is likely the first reason why there might be configuration options
changing.
It
is not actually possible (as far as I know) to prevent Button 8 from accessing
Audio Assist. It doesn't matter what sound is mapped there, Audio Assist will
continue to function.
As
an alternative, or in addition to the steps above, you can ensure that your
"desired" configurations are always saved to some (or many) User
Presets. Using the user presets feature allows you to, at any time, restore the
configurations of the locomotive to some known state. This is always
recommended as the last step in your installation process, to serve
as a safety, and eliminate the need/hassle of performing a factory reset (and
doing everything from scratch).
CV15/16 "Decoder Lock" will not prevent
the Audio Assist program from changing CV and sound configurations. This is an
oversight which we are planning to address in the future.
--
Dan
Engineering and Product Development
Train Control Systems
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