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the Sarco Valve is way too loud. So we’ve included two versions of it, controlled by
functions. You can choose whether or not you hear the Sarco Valve, and you can choose
how fast you want it to spit.
If you press F20, the Sarco Valve will be heard intermittently. If you press F21, it will be
heard less intermittently. Make sure you turn off F20 first.
If you have a silent GMD-1 and you want to recreate the Sarco Valve effect, please aim
away from the models. Your GMD-1 warranty does not include malfunction due to ac-
cumulated saliva.
F22 Sarco After Shutdown
On real engines you can hear the Sarco Valve after the engine shuts down. So the de-
fault for this is “off.” If you want to hear the Sarco Valve spit for a minute after shutdown,
make sure F22 is pressed.
F23 Brake Set/Release
This function turns off the brake release and brake set sounds when you start or stop mov-
ing, respectively. It has no effect on the function of the engine — it just affects the sounds.
HORNS
There are numerous extra horn recordings included with your GMD-1, and you can
change them around by changing the value of CV 48. Though why you’d want to
change the horn from the GORGEOUS one that we recorded and is included from the
factory is beyond us.
CV48-0 Nathan K3L #1 (Default Horn)
CV48-1 Nathan K3L #2
CV48-2 Nathan M3H
CV48-3 Nathan K3
CV48-4 Nathan P5A
CV48-5 Nathan K3LA
CV48-6 Leslie RS3L
CV48-7 Nathan K3L #3
CV48-8 Nathan K5H
Note that you can only change the horn on a programming track or using a LokProgram-
mer.
SOUND VOLUME SETTINGS
The sound volumes on your decoder have been pre-set at the factory to levels that we
found comfortable on our test tracks. This is considerably quieter than what you are
probably used to when first turning on a sound-equipped locomotive, because we feel
that most locomotive models are set to ABSURDLY LOUD out of the box.
