Symmetricom TimeHub 5500 User Manual

56 TimeHub 5500 User’s Guide 097-55501-01 Revision M – January 2009
Chapter 2 Engineering Ordering Information
Card Overview
DS1/CC Driver Cards
Each DS1/CC Driver card (090-55581-01) supports 40 DS1 or Composite Clock
(CC) outputs, and can be installed in either a Master/Remote shelf or in an
Expansion shelf. The Master/Remote shelf contains eight slots for Output Driver
cards, arranged in four groups labeled A through D. The Expansion shelf contains
16 slots for Output Driver cards, arranged in eight groups labeled A through H.
To maintain outputs should an Output Driver card fail, you can install them in pairs
within a group. If one Output Driver card in a group fails, then the other card
maintains the outputs with minimal disruption. If you do not need protected outputs,
you can install one Output Driver card in either slot of a group.
Figure 2-4 shows the front panel of the DS1/CC Driver card.
Comm Ports
Local Xmit
Green  On = Data is being transferred on the local port
 Off = Data is not being transferred on the local port
Comm Ports
Remote Link
Green
 On = The network connection is enabled
 Off = The network connection is disabled
Comm Ports
Remote Logon
Green
 On = A user is logged on the network
 Off = A user is not logged on the network
Comm Ports
Remote Xmit
Green
 On = Data is being transferred on the network
 Off = Data is not being transferred on the network
Note: The “D” group on a Master/Remote shelf supports 20 protected
or non-protected outputs. Groups A, B, and C support 40 protected or
non-protected outputs.
Table 2-6. Management Card Front Panel Indicators (Continued)
Indicator Color Description

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English