Eia-232 Ports; Communications Module Alarms - Symmetricom SSU-2000 User Manual

Chapter 6 Clock and Communications Module Reference Data
Communications Module
Alarm Levels
The Communications module alarm logic incorporates three alarm levels:
CRITICAL Alarms – This class of alarms requires immediate user intervention.
When a critical alarm condition is detected, the CRITICAL ALARM relay at the
rear panel of the SSU-2000 is activated and the CRITICAL ALARM LED on the
front of the Communications module lights red.
MAJOR Alarms – A class of alarms that may require immediate user intervention.
When a major alarm condition is detected, the major alarm relay on the rear
panel of the SSU-2000 is activated and the MAJOR ALARM LED on the front of
the Communications module lights red.
MINOR Alarms – A class of alarms that indicate the unit performance is
degrading. The minor relay is activated and the MINOR ALARM indicator lights.
Alarms are elevated from MINOR to MAJOR to CRITICAL on a per module basis
with a user-set time, from 60 to 500 000 seconds, default is (86 400 seconds or one
day). The elevation time is kept in each module.
The user can select delay periods for software alarms from 0 to 86 400 seconds.
Changing the delay period generates an event. The setting is stored in each
module. Note: if the original value is set to IMMED (–1), it means this error delay is
not allowed to change and will happen immediately.
Table 6-8 lists the Communications module alarms.
Table 6-8. Communications Module Alarms
ID
0x0 Backplane Communication Errors
0x1 Mastership Problems
0x2 Loss of Power A
0x3 Loss of Power B
0x4 SPI Watchdog Timeout

EIA-232 Ports

The Communications module implements four EIA-232 ports that provide for local
and remote communications with the SSU-2000.
A user interface (software resident in the Communications module) provides various
levels of password-protected access for configuration and detailed performance
monitoring and diagnostics. Use either the interactive command set or the TL1 user
interface for configuring and detailed performance monitoring, see the SSU-2000
Technical Reference.
156 SSU-2000 User's Guide
Description
Alarm Error Delay
Level Default
MINOR 5 sec
MINOR 5 sec
MINOR Immed
MINOR Immed
MAJOR Immed
12713020-002-2 Revision F.01 – January 2007
Error Delay
Settable?
Yes
Yes
No
No
No