Atlas Gold Series User Manual Download Page 27

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Atlas User Manual: Diesels

with QSI Sound

27/52

13 January 2015

Decoders (Quantum, Quantum Titan, or
Quantum Titan with ET)

•

Start Up from Total Shut Down:

If you double-press the

key in

Total Shut Down

, you will hear the

engineer’s door opening and closing; the

Cab Lights

will come on (if available); the

Number Boards

will come

on (if available);

Directional Lighting

will turn on (if it was previously off). These actions are followed by

sounds of the

Diesel Cooling Fan Vents

opening, the

Prime Mover

starting up, the

Air Pumps

starting up, and

the locomotive entering normal operation. During the

Start Up

procedure, none of the function keys is active.

If the throttle is turned up from zero during any of the above

Start Up

procedures, the

Start Up

procedure will abort,

and the locomotive will enter normal operation.

Note

Whenever a

Start Up

command is sent, regardless of whether the locomotive is in

Shut Down

or operating

normally, the Quantum System will automatically restore all Automatic Operations

4.1.10 Squealing Brake and Flange Sounds (F7 Key)

Quantum provides automatic Brake Squeal as a locomotive slows to a stop. The operator can also control squealing
sounds for continuous and variable brake sounds for protracted stops or to simulate the sounds of squealing wheel
flanges on curved track.
Squealing Brakes come on automatically when the speed is reduced from high-speed travel (over 40 smph) to a
speed less than 20 smph.
Pressing the

key when the locomotive is moving at any speed will manually activate Squealing Brake sounds, and

repeated pressings while the Squealing Brake sounds are occurring will continue the sounds uninterrupted.

Note

If you slow the locomotive too quickly, the Squealing Brake sounds will terminate abruptly when the locomotive

stops and enters Neutral.

Note

If you lower your throttle to Speed Step 0 on a moving locomotive, the

key will apply Air Brakes as long as

the locomotive continues moving. See the next section.

4.1.11 Air Brakes (F7 Key)

Quantum provides automatic

Brake Squeal

as a locomotive slows to a stop. If you have selected any non-zero

deceleration inertia or momentum value in CV4 and/or CV24, the

key can be used to apply

Air Brakes

to stop the

locomotive more quickly than it would normally stop from the inertia settings

. To use these simulated Air Brakes:

•

Turn the throttle down to Speed Step 0 on a moving locomotive; this action enables the

key to act as a

brake.

•

Press the

key. Hear a brief

Brake Squeal

sound and air being released from the brake pipes continually.

The longer time that “air” is released, the greater the braking action.

•

Press the

key again to stop the air release. The train will continue to slow at the last braking value.

•

If you want to apply more braking, press the

key again to release more air. When you reach the desired

amount of braking, press

again to stop the air release.

Note

If you continue to release “air” (for over 24 seconds total), all the pressure will be released, and the brakes will

be on full. You will hear no further air release sounds.

Power Braking:

Prototype

Power Braking

is a method to control the slowing of a train by applying power against the

brakes already set. Train Air Brakes are slow to apply and slow to release, but the throttle is fast and is a quick way to
prevent a train from slowing too fast from brakes already set which allows the engineer to precisely stop the train at
the desired location.

In order to stay within NMRA practices, we do not work against braking which would make Consisting with other
locomotive brands more difficult. Instead, if the throttle is increased to any value above 0, the brakes are released and
the locomotive will either accelerate at a rate determined by the sum to CV3 and CV23 or deceleration at a rate
determined by the sum of CV4 and CV24 depending on the throttle setting. This allows the operator to use the throttle
to increase speed to simulate Power Braking to stop at an exact location.

Note

If the locomotive is in

Neutral

when the

key is pressed, a

Long Air Release

sound simulates setting the

brakes. However, no braking effect is activated

CV4 and CV24 determine the deceleration rate. Applying the brakes increases the deceleration rate temporarily.

If the brakes are set in Neutral, turning up the throttle automatically releases the brakes.