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Atchison, Topeka and Santa Fe

Santa Fe searchlight signals can be connected to the Signalist SC1 as in the below diagram.

ATSF twin head + single head searchlights connected to a SC1

Atchison, Topeka and Santa Fe searchlight wiring diagram


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

ATSF

Rule

Description

Double

head

Single

head

Aspect No

CV38=78

Aspect No

CV38=129

CV38=8

Addr. 1

 

Addr. 2

241/2

Stop (alt 1)

R

R

R

0

0

Reverse

Normal

241/2

Stop (alt 2)

R

-

R

1

0

Reverse

Normal

240

Restricting  (alt 1)

R

r

r

2

4

 

 

240

Restricting  (alt 2)

R

L

L

3

4

 

 

238

Diverging App. (alt 1)

R

Y

-

4

 

 

 

238

Diverging App. (alt 2)

R

y

-

5

 

 

 

237

Diverging Clear

R

G

-

6

 

 

 

236

Approach (alt1)

Y

R

Y

7

1

Reverse

Reverse

236

Approach (alt2)

Y

-

Y

8

1

Reverse

Reverse

235

Approach Restricting

Y

L

-

9

 

 

 

234

Approach Medium (alt 1) 

y

R

y

10

5

 

 

234

Approach Medium (alt 2)

Y

Y


11

5

 

 

232

Advance Approach

Y

G

 

12

 

 

 

231

Approach Limited

Y

g

 

13

 

 

 

230

Clear  (alt 1)

G

R

G

14

2

Normal

Reverse

230

Clear  (alt 2)

G

-

G

15

2

Normal

Reverse

-

Dark

 

 

16

8

Normal

Normal


Key R=Red, r=Flashing Red G =Green, g=Flashing Green, Y=Yellow, y=Flashing Yellow, L=Lunar, 
W=White.



Signal reference chart for 1989 can be found at the Signals of the US website:- ATSF PDF



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