User's Manual
Decoder for Atlas N Scale H15/16-44 Locomotives  10 
Atlas Model Railroad Co., Inc.
CV  Description  Range  Default 
Value
**
50 
Bit 2 
Brake momentum on DC operation. 
Used to achieve prototypical braking at red 
signal indications if conventional DC control 
is disabled. (CV29.2 = 0*) 
0 = locomotive proceeds with track-voltage-
dependent speed inside the conventional DC 
section. 
1 = locomotive brakes in the conventional DC 
section with preset brake momentum. 
0,1  0 
(4) 
  Bit 3  Motor Drive Selection 
0 = Precision Glide Control 
1 = Silent Drive 
0,1  0 
(8) 
  Bits 
4-7 
Not used    0 
51  Lighting Effects for Output A (front headlight) 
0-247  6 
  Bit 0 
Directional or Independent Headlights: 
 0 = Headlights are directional. 
 1 = Headlights are independent per Rule 
17, with F0 controlling front headlight and F1 
controlling rear headlight. 
0,1  0 
(1) 
  Bit 1 
Front Headlight Dimming Control: 
If CV51.2=1, the value in CV52 is used for 
front headlight dimming with the dimming 
controlled as follows: 
 CV51.1=0: Front headlight always dimmed 
 CV51.1=1: If CV51.0=0, function F1 dims 
front headlight; if CV51.0=1, function F4 dims 
front headlight. 
0,1  1 
(2) 
  Bit 2 
Dimming of Front Headlight: 
0 = Front headlight cannot be dimmed 
1 = Front headlight can be dimmed 
0,1  1 
(4) 
  Bit 3 
Not used    0 
  Bit 4  0 = No effect 
1 = Front headlight functions as Gyro light 
0,1  0 
(16) 
  Bit 5  0 = No effect 
1 = Front headlight functions as Mars light 
0,1  0 
(32) 
  Bit 6  0 = No effect 
1 = Front headlight functions as single pulse 
Strobe light 
0,1  0 
(64) 
  Bit 7  0 = No effect 
1 = Front headlight functions as double pulse 
Strobe light 
0,1  0 
(128) 










