System Components - Symmetricom SSU-2000e User Manual

Alarms and all events are reported over the communication ports and contain
details of the event in a single message including the time of the event. All ALARM
indications clear when the conditions that caused them no longer exist. In addition,
normal operating status is indicated by green LEDs on the front panel of modules.
Fail Mode (Critical)
In the FAIL mode, the SSU-2000e removes the failed module from service or
usability to prevent interruption of the system. For example, a FAIL event detected
in Clock A causes a switchover from Clock A to Clock B, effectively removing Clock
A from the system. The FAIL event is reported on all communications ports and an
alarm is generated.

System Components

The fully expanded SSU-2000e system contains the following physical components:
SSU Main Chassis populated with various combinations of Clock, Input, Output
and Communications modules
Up to four SDU-2000e Expansion shelves containing buffer and output modules
Note: For additional information about each of the module types,
see
Module Reference Data,
Reference
Guide
a new system.
SSU-2000e Main Shelf (Chassis)
The SSU-2000e main shelf (shown in
motherboard with provisions for supporting up to 12 hot-swappable modules. Filler
panels are available for use in chassis that are not fully populated.
Module Assignments
All SSU-2000e modules are equipped with card ejectors and plug in from the front
of the chassis. Each module is secured in the chassis with captive fasteners. The
module assignments for the SSU-2000e main chassis are listed in
shown in Figure
Table 1-1. Module Slot Locations
Slot
A1
A2
12713140-002-2 Revision E – October 2006
Chapter 6, Clock Module Reference Data, Chapter 7, Input
and
Data. Also see Chapter 9, Hardware Configuration
for component part numbers and guidelines for configuring
1-6.
Module
Clock Module A
Communications Module
Chapter 8, Output Module
Figure 1-6) contains a metal chassis and a
Chapter 1 Product Overview
System Components
Table 1-1 and
SSU-2000e User's Guide 31