Symmetricom EDGE CLOCK 1000 - Manual (Page 54)

Chapter 3 Installing the TimeProvider
Getting Started
54 TimeProvider User’s Guide 097-58001-02 Revision G – April 2008
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.
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.
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.