M.T.H. Premier 2-4-1A Operator's Manual page 26

One Shot Doppler – F21. You can set your MTH PS3.0-equipped engine to simulate
the actual Doppler Effect sound a real engine makes as it passes you. To do this, press
the F21 button once (enable F21) and then listen as the engine makes that pitch shift
that mimics the Doppler Effect perfectly. Press the F21 button again (disable F21) to
shut off the Doppler Effect. With a little practice in timing and speed you can make
this happen right in front of you.
Rev Up/Labor Chuff – F19. Depending upon the engine type you have Diesel/Electric
or steam you can either force the engine to Rev Up (Diesel/Electric) or force the
engine to play its Labor Chuff sounds. For a Diesel/Electric, press the F19 button
twice (toggling on then off) to Rev Up one notch. There are eight rev levels in a
Diesel/Electric.
To force the Labor Chuff sound in a steam engine, press the F19 button once (enable
F19). As long as F19 is enabled the engine will play its Labor Chuff sounds. To set the
sound back to Normal Chuff press the F19 button again (disable F19).
Rev Down/Drift Chuff – F20. Depending upon the engine type you have
Diesel/Electric or steam you can either force the engine to Rev Down (Diesel/Electric)
or force the engine to play its Drift Chuff sounds. For a Diesel/Electric, press the F20
button twice (toggling on then off) to Rev Down one notch. There are eight rev levels
in a Diesel/Electric.
To force the Drift Chuff sound in a steam engine, press the F20 button once (enable
F20). As long as F20 is enabled the engine will play its Drift Chuff sounds. To set the
sound back to Normal Chuff press the F20 button again (disable F20).
For example, if you set the rev level on a Diesel to notch 6 and start increasing the
speed of the engine it will stay at that rev level until the engine's speed calls for a higher
rev level. Once the engine has gone past that rev level, notch 6 in this example, the
engine will then rev down normally, all the way to idle, as you decrease the speed.
Coupler Slack – F22. When an engine hooks up and pulls a train it has to take up the
coupler slack. You can play this sound by pressing F22 twice (toggling on then off).
This feature works two ways – While the engine is sitting still, press F22 twice to enable
it. Then, when you move the engine, it will play the Coupler Slack sound.
The second way is to simply force the sound while the engine is moving. To do this,
simply press F22 twice (toggling it on then off). The sound will play.
Coupler Close – F23. To play the Coupler Close sound press the F23 button twice
(toggling it on then off). You can play this sound as you're coupling cars together to add
realism.
Single Whistle/Horn Blast – F24. To play a Single Horn Blast press the F24 button
twice (toggling in on then off). This plays a single, short horn blast.
Brake Sounds – F26. Pressing the F26 button (enable F26) will disable the Brake
Sounds for your engine. The Brake Sounds occur when you reduce the speed of your
Premier 2-4-1A Mountain Steam Locomotive
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