Rack Mounting Procedure
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 “Adapter Bracket Mounting Procedure (19-inchTelco-style Equipment Rack)” on page 2-5, “Adapter Bracket Mounting Procedure (23-inchTelco-style Equipment Rack)” on page 2-5, or “Adapter Bracket Mounting Procedure (ETSI-style Equipment Rack)” on page 2-6for more information].
Perform the following procedure to mount the HMS-318 List 3 shelf into a telco-style equipment rack.
IMPORTANT To prevent injury, review the “Safety Guidelines” on page xi and the “Special Rack-Mounting
!Precautions” on page 2-4before installing the HMS-318 List 3 shelf in the telco-style equipment rack.
Step | Action |
1 | Locate the telco-style equipment rack position you plan to install the HMS-318 List 3 shelf into. |
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2 | Verify that there are no obstructions and ensure that the telco-style equipment rack is stabilized. |
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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 Table 2-1 on page 2-2). |
| Note: 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. |
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4 | Tighten the screws using a 1/4-inch flat-blade screwdriver. |
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5 | You are now ready to begin interconnecting the communications cables that apply to your application |
| (see “DSX-1 and HDSLx Connections” on page 2-7or “Span Powered xDSL Connections” on page 2-8). |
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DSX-1AND HDSLX CONNECTIONS
Perform the following procedure to connect the DSX-1 and HDSLx interface cables to connectors P1, P2, P3 and P4 (see Figure 1-2 on page 1-3for connector location and “Connecting to HDSL, HDSL2, and HDSL4 Circuits” on page 1-8, for connector descriptions).
| DANGER | Before making both DSX-1 and HDSLx connections to the HMS-318 List 3 shelf, ensure that the |
| Main CO power breaker is off. Otherwise, severe injury to the installer or damage to the unit may |
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| | result. |