Symmetricom 1100, 1000 manual Getting Started, Pre-Installation Check, Performing a Site Survey

Chapter 3 Installing the TimeProvider

Getting Started

Getting Started

Before beginning the installation, complete the pre-installation check described in Pre-Installation Check, on page 54, perform the site survey in Performing a Site Survey, on page 54, and gather the necessary tools and materials described in Gathering the Tools, on page 55.

Caution: All telecom signal wiring (including I/O, clocks and Ethernet) must be installed with shielded cabling only and appropriately grounded.

Cabling shall be installed in compliance with intra-building surge, lightning, and EMC requirements.

This section describes the preliminary activities you need to perform before you install the TimeProvider.

Pre-Installation Check

Before installing the TimeProvider, ensure that the following preparations are in place:

The equipment rack is grounded properly

A fused power panel is present (–48 V DC at 5 Amp)

Performing a Site Survey

Physical Space

The TimeProvider is designed to mount in a 19-inch (48 cm) rack. Rack ears are available to mount the shelf in a 23-inch (58 cm) rack. The ETSI front-access shelf is 6.875 inches tall (177 mm), or 4 RU (Rack Units, where 1 RU = 1.75 in/44.45 mm). For ventilation, plan on leaving a 1 RU space below the shelf. The NEBS rear- access shelf is 5.25 inches tall (133 mm), or 3 RU. For ventilation, plan for a 2 RU space above the shelf and a 1 RU space below the shelf.

The Expansion Panel also mounts in a 19-inch (48 cm) rack, and it is 3.5 inches (89 mm, or 2 RU) tall. The Expansion Panel does not require ventilation spaces above or below it.

You can mount the shelf so that it protrudes 2 inches (5 cm) or 5 inches (12.7 cm) from the front of the rack, or you can mount it flush with the front of the rack.

Be sure that the installation site is secured. Access to the location can only be gained by service personnel or users who have been instructed about the reasons for the restrictions applied to the location and about any precautions that shall be taken. Access is through use of a tool or lock and key, or other means of security, and is controlled by the authority responsible for the location.

54 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008