15 
Connections Between Ports and Optical Fibers 
a 
• Exterior of the SS61COA 
  
Optical input port 
Optical output port 
DIP switch 
RS232-1 port 
RS232-2 port 
Monitoring 
port 1 
Monitoring 
port 2 
Power port 
LC fiber connector 
RS-232-1 and RS-232-2 are management ports. MONITOR-1 and MONITOR-2 are alarm output ports. 
• Fiber connections of the SS61COA 
Subrack 1  Subrack 2 
The SS61COA, a case-shaped amplifier for 1550 nm optical signals, can be used as a pre-amplifier or 
a booster amplifier. 
6 
Installing the SS61COA 
Optical interface board 
OUT 
IN 
IN 
IN 
OUT 
IN 
SS 61 COA 
SS 61 COA 
Optical fiber 
10  dB  fixed optical attenuator 
OUT 
SS 61 COA 
OUT 
OUT 
IN 
SS 61 COA 
OUT 
IN 
Optical fiber 
10  dB  fixed optical attenuator 
Optical interface board 
NOTE 
NOTE