4
DCC Function Key Operation for Atlas HO-scale
Gold Series S-2 Locomotives (continued)
Function
Key
Locomotive Behavior when
Press Function Key
Function
Behavior
(Latching or
Non-latching)
Works
Only with
Engine
Sounds On
Works
Only
When
Moving
F15
Cab Radio Communication sounds (on/off)
Latching
(For S-2,
press F15 twice)
No
No
F16
Rail-joint Clank sounds (1
st
push on/2
nd
push off)
Only active when prime mover sound on
Latching
Yes
Yes
F17
Brake Set/Release sounds with each push
Non-Latching
Yes
Yes
F18
Sanding Valve sounds
(1
st
push on/2
nd
push off)
Latching
Yes
No
F19
Short Air Let-off sounds
Latching
(always
press F19 twice)
No
No
F20
Air Compressor sounds (1
st
push on/2
nd
push off)
Latching
Yes
No
F21
Pop Valve sounds (1
st
push on/2
nd
push off)
Latching
No
No
Section 4.1 in Reference [1] explains the operation of DCC functions F1 to F21 in detail.
•
Default Headlight Operation in Atlas HO-scale Gold Series S-2 Locomotives
The
F0
or
Headlight
DCC function key turns on or off the directional front headlight and rear
headlight. The default states for the front headlight and rear headlight are
Off
. When switched
On
,
the Directional Headlights
1
operate as shown in the table below. This headlight behavior mimics, to
the extent possible, the way prototype yard or local switching locomotives operate.
Light
Forward Stopped after Forward Reverse Stopped after Reverse
Front Headlight
Bright
Dim
Dim
Dim
Rear Headlight
Dim
Dim
Bright
Dim
When the locomotive is first powered up, you may need to press the
F0
(or
Headlight)
key on your
DCC system one or two times to turn on the directional front or rear headlight.
•
DCC Programming Locations
Most DCC systems allow you to program a Configuration Variable (CV), such as the DCC address of
a locomotive, in either of two places:
-
On a special section of track not connected in any way to your layout and called the Program
Track. (In DCC terminology, programming locomotives on the program track is called
Service
Mode Programming
.)
-
Anywhere on the Main Line (regular track) of your layout. [In DCC terminology, programming a
locomotive on the main line of your layout is called either
Programming on the Main (POM)
or
Operations Mode (Ops Mode)
programming.]
In almost all cases, the ESU LokSound Select decoder installed in your Alco S-2 locomotive can be
programmed on your program tack
WITHOUT
a Program Track Booster connected between the
program track output of your DCC system and your physical program track. However, if you do need
a Program Track Booster, Atlas recommends the PTB-100 from SoundTraxx.
1
The LokSound Select decoder uses constant voltage lighting that is independent of track voltage.