Automatic Sound Effects; Conventional Dc Operation - M.T.H. Premier 2-4-1A Operator's Manual

Automatic Sound Effects

Certain Proto-Sound 3.0 sound effects automatically play in programmed conventional
mode conditions:
•Squealing Brakes play any time the engine's speed decreases rapidly.
•Cab Chatter plays at random intervals when the engine idles in neutral.
•Engine Start-up and Shut-down sounds play when the engine is initially
powered on or is powered off for five seconds or more.

Conventional DC Operation

Your MTH locomotive will operate on conventional DC track voltage also. However,
functions such as blowing the whistle, ringing the bell, and the PSA sounds cannot be
initiated in conventional DC. Only the steam chuffing sounds with synchronized
puffing smoke, squealing brake sounds, and idle sounds will function.
Operation of your MTH Proto-Sound 3.0 engine in conventional DC is very similar to
operating a conventional AC engine. As you increase track voltage, engine speed
increases.
As the track voltage is decreased, engine speed is decreased. When track voltage polarity
is reversed using the polarity or direction switch on the power pack, the engine will run
in the opposite direction. The electronics in your MTH Proto-Sound 3.0 locomotive are
designed to slowly change direction without a need to change the throttle, if you so
desire.
Just change the polarity switch on your DC power pack and the engine will gradually
come to a stop and then automatically begin traveling in the opposite direction. The
speed will build up to the same speed that the engine was going in the previous
direction. When power is first applied to the locomotive, the engine's sounds will start
up when the track voltage reaches about 8 VDC. To get your locomotive moving, after
the startup sounds have finished and the locomotive is idling, slowly increase the track
voltage until the locomotive is traveling at the desired speed.
NOTE – If you apply more than 9.0VDC to the engine at start-up the engine will not
move. This is normal. We refer to this as "Anti-Jackrabbit" and this feature prevents
your model from taking off at high track voltages. Simply lower the track voltage down
below 9.0VDC and then back up to get your engine moving. This applies only when you
start up your engine.
DCS - Digital Command System
While the acronyms are close, this is where the similarity ends between DCC and DCS.
Yes they are both digital control systems. However, M.T.H. DCS is not DCC. There are
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Premier 2-4-1A Mountain Steam Locomotive
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