M.T.H. HO 4-8-8-4 Big Boy Engineer's Manual page 6

Digital Control
In standard analog DC mode, your model still operates under digital control. The
PS3 advance speed control system converts track voltage into digital speed
commands. Your model will run smoothly and consistently at any speed regardless
of load, hills, or curves. If you are a DCC user, you'll quickly learn to appreciate
the precision of our speed control and linear speed curve. DCS users will enjoy the
added benefits of controlling speeds in increments of 1 scale mile per hour
displayed on DCS controllers or easily changing acceleration and deceleration rates
independently without any discussion of bits or bytes. To be clear, DCS is NOT
DCC.
Lights & Smoke
As you read on, you'll notice there are no instructions for replacing light bulbs in
your engine. That's because there aren't any. We use specially designed and
controlled LEDs to create realistic lighting effects that occur automatically. Again,
NO PROGRAMMING! Just come to a stop and watch as the headlight dims
automatically in accordance with rule 17. Of course, as you pull away, the headlight
returns to it's fully bright, yet warm, glow. Your new HO Steam engine includes
realistic Classification lighting with appropriately colored LED's in the boiler. We
even included a light in the cab so the engineer and fireman can see to do their
jobs!
MTH is renowned for our realistic smoke systems. When the smoke is on, you will
experience copious puffs synchronized precisely with chuffing sounds at 4 times
per revolution of the drive wheels. Of course, when you stop, the smoke wafts out
of the stack steadily, just like the real thing! The smoke behavior applies to all
operating modes, analog DC, DCC, or DCS. With some DCC controllers, you can
turn smoke on and off remotely. In DCS mode, you can not only toggle smoke on
and off with the press of single button, you can actually select from 3 output levels
to keep those smoke alarms from going off!
More...
In analog DC operation, just flip the track polarity or direction switch at any speed
and watch your engine gradually come to stop, turn on the appropriate directional
lighting, and smoothly accelerate back up to speed. No other HO locomotive has
features like these. There are so many more things to learn and enjoy about the
engine, we could write a book. But, that's no fun. So, if you haven't already done
so, flip to the Quick Start Guide and let's run your new engine!!
M.T.H. HO 4-8-8-4 Big Boy Steam Engine
6