Troubleshooting Guide - Symmetricom SSU-2000e User Manual

Chapter 5 Maintenance and Troubleshooting
Troubleshooting
To perform troubleshooting on the SSU-2000e, you must establish a serial
connection to a terminal, laptop or PC with terminal emulation software. This is done
using port A or B (located on the back panel), or the Local port, located on the front
panel of the communications module. If the SSU-2000e is connected to a LAN, an
Ethernet telnet session may be established. Refer to
on page 91, to establish a serial connection, or
page 92, to establish an Ethernet connection.

Troubleshooting Guide

This section describes troubleshooting procedures for the SSU-2000e.
details event and alarm descriptions, default event and alarm levels, status
messages and corrective actions.
Note: All event and alarm levels are user-configurable. Events and
alarm levels listed in
The modular design of the SSU-2000e offers a high level of stability and reliability.
After installation and self-diagnostics, the majority of events and alarms can be
attributed to fluctuations in signal quality, which may be self-clearing. Others may be
caused by faulty hardware and software configurations. Regardless of the cause,
hardware seldom needs to be replaced. If corrective action has been taken and the
problem persists, call Customer Service.
When a Communications module is installed and functioning properly, it monitors
the SSU-2000e and logs unit events into non-volatile memory for inspection at a
later date. Events are conditions within the unit, or at the interfaces of the unit,
which may indicate abnormal operation or a change in the unit's operational status.
Although every alarm is considered to be an event, not every event is an alarm. For
example, a login is recorded as an event but is not considered to be an alarm. In
this case, no action is required by the user. Recurring events may be escalated to
alarm status and may require action by the user. Conversely, alarms may be
de-escalated and corrected automatically.
explains how to interpret status messages and take corrective action if needed.
134 SSU-2000e User's Guide
Communicating by
Table 5-4
are factory defaults.
Corrective
12713140-002-2 Revision E – October 2006
Communicating by Serial
Ethernet, on
Table 5-4
Maintenance, on page 131,
Port,