Specifications
Installation and Operation Manual  Chapter  2 Installation and Setup 
FCD-E1LC Ver. 1.0  FCD-E1LC Enclosures  2-7 
A. FCD-E1LC without Sublink 
B. FCD-E1LC with Sublink 
Figure 2-1. Typical FCD-E1LC Front Panels 
Table 2-2. FCD-E1LC Front Panel Indicators 
Indicator  Function 
PWR Indicator (green)  Lights when the FCD-E1LC is powered 
TST Indicator (yellow) 
Lights when a test is active 
ALM Indicator (red)  Flashes to indicate that a major alarm condition is present in the system. 
Lights to indicate that the most severe alarm condition present in the system is 
a minor alarm 
SYNC LOSS – MAIN LOC 
Indicator (red) 
Lights to indicate local loss of synchronization on the main link 
SYNC LOSS – MAIN REM 
Indicator (red) 
Lights to indicate that a remote loss of synchronization indication has been 
received by the main link interface 
SYNC LOSS – SUB LOC 
Indicator (red) 
Lights to indicate local loss of synchronization on the sublink 
SYNC LOSS – SUB REM 
Indicator (red) 
Lights to indicate a remote loss of synchronization indication has been received 
by the sublink interface 
FCD-E1LC Rear Panels 
The components located on the FCD-E1LC rear panels depend on the ordered 
interfaces. 
Figure 2-2 
shows several typical rear panels of FCD-E1LC units. 
Table 2-3 
explains 
the functions of the rear panel components. 










