Install mounting ears on the fiber management tray. 
Secure the fiber management tray in the cabinet. 
Phillips screwdriver 
By default, the fiber management tray is installed in the lower part of the cabinet and is more than 50 mm 
away from the subrack. The fiber management tray must also be more than 50 mm away from the air inlet 
and outlet of the subrack. The fiber management tray can be installed in a cabinet that is not fully configured 
with subracks, but future expansion will be affected due to reduced installation space in the cabinet.  
Installation Method 
c 
With no attenuator used (the optical fibers connected to 
the optical interface board are on the same side of the 
cross-connect and timing board) 
With no attenuator used (the optical fibers connected to 
the optical interface board are on different sides of the 
cross-connect and timing board) 
With the attenuator used (the optical fibers connected to 
the optical interface board are on the same side of the 
cross-connect and timing board) 
With the attenuator used (the optical fibers connected to 
the optical interface board are on different sides of the 
cross-connect and timing board) 
Variable optical attenuator  Variable optical attenuator 
>50 mm 
Spooling Fibers in the Fiber Management Tray 
d 
30±3 Kgf.cm 
M6 
12±1.2 Kgf.cm 
M4 
NOTE