ADC HMS-318 Manuel D’Utilisation

2-7

To secure the HMS-318 List 3 shelf to the telco-style rack, you must use the mounting screws provided or follow 
your local practices for installing the shelves into your telco-style equipment rack. Ensure that the adapter brackets 
have been securely fastened [see 

, or 

 for more information].

Perform the following procedure to mount the HMS-318 List 3 shelf into a telco-style equipment rack.

Perform the following procedure to connect the DSX-1 and HDSLx interface cables to connectors P1, P2, P3 and P4 
(see 

 for connector location and 

, for connector descriptions).

To prevent injury, review the “Safety Guidelines” on page xi and the “Special Rack-Mounting 
Precautions” on page 2-4 before installing the HMS-318 List 3 shelf in the telco-style equipment 
rack.

1

Locate the telco-style equipment rack position you plan to install the HMS-318 List 3 shelf into.

2

Verify that there are no obstructions and ensure that the telco-style equipment rack is stabilized.

3

Position the shelf in the telco-style equipment rack lining up the bracket holes on the shelf with the holes 
on the rack and secure with the four #12-24 x .375 inch mounting screws (see 

4

Tighten the screws using a 1/4-inch flat-blade screwdriver.

5

You are now ready to begin interconnecting the communications cables that apply to your application 
(see 

 or 

 The vertical spacing for EIA racks is 1.75 inches (4.44 cm), with mounting holes 

spaced 1.5 inches (3.81 cm) apart. Vertical spacing for WECO racks is 2.0 inches (5.08 cm), 
with mounting holes spaced 1.0 inch (2.54) apart.