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Amtrak

Amtrak position light signals can be connected to the Signalist SC1 as in the below diagram. A second single head can be connected to terminals E,F and G when a single head configuration is required instead of A, B and C.

Amtrak twin head position light connected to a SC1

Amtrak position light wiring diagram


Note that when using the CV38=8 configuration flashing aspects can be achived by toggling between the solid aspect and dark. Software such as JMRI will do this automatically.

Rule

Description

Aspect

CV38=75 Aspect

CV38=67
Aspect

CV38=8
1st addr

 
2nd

 
3rd

 
4th


5th

 
6th

 
7th

 
8th

292

Stop

R

(D)

0

0

R

N

N

N

N

N

N

N

291

Stop and proceed

R

 W

2

 

R

N

N

R

R

N

N

N

290

Restricting

R

L

3

 

R

N

N

N

N

N

N

R

288

Slow approach

R

Y

4

 

R

N

N

N

N

N

R

N

286

Medium approach

R

y

5

 

R

N

N

N

N

N

R

N

285

Approach

Y

(D)

6

1

N

N

R

N

N

N

N

N

284

Approach Slow

Y

Y

7

 

N

N

R

N

N

N

R

N

283

Medium to Clear

R

G

8

 

R

N

N

N

N

R

N

N

282A

Advance Approach

y

(D)

9

5

N

N

R

N

N

N

N

N

282

Approach Medium

Y

G

10

 

N

N

R

N

N

R

N

N

281C

Limited to Clear

R

g

11

 

R

N

N

N

N

R

N

N

281B

Approach Limited

Y

g

12

 

N

N

R

N

N

R

N

N

281A

Cab speed

g

(D)

13

6

N

R

N

N

N

N

N

N

281

Clear

G

(D)

14

2

N

R

N

N

N

N

N

N

-

Dark

D

(D)

15

8

N

N

N

N

N

N

N

N

Key R=Red, G =Green, g=Flashing Green, Y=Yellow, y=Flashing Yellow, L=Lunar, W=White, D=Dark.
N=Normal or Closed, R=Reversed or Thrown

In JMRI use DCC Signal Mast Decoder for CV38=65 and CV38=67. For CV38=8 use Triple Output for the top head and for the bottom use Quad Output if fully populated or Single Output if just the centre white lamp is fitted and connected to the otherwise unused output D instead. Note that in JMRI there is no option for a plain white aspect so use Red instead. Visit the JMRI AMTRAK-2010 signal system to see the available mast types.


Signal reference chart can be found at the Signals of the US website:- Amtrak PDF



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