Symmetricom TimeHub 5500 User Manual

228 TimeHub 5500 User’s Guide 097-55501-01 Revision M – January 2009
Chapter 5 Maintaining the TimeHub 5500
Troubleshooting the TimeHub 5500
ALARMS
Shelf Minor
Off There is no minor alarm
within the shelf.
None required.
Red A minor alarm condition
exists in the shelf.
Refer to the
TL1 Reference Guide
(see RTRV-ALM) to determine which
minor alarm occurred and the
recommended action.
ALARMS
Shelf Major
Off There is no major alarm
within the shelf.
None required.
Red A major alarm condition
exists in the shelf.
Refer to the
TL1 Reference Guide
(see RTRV-ALM) to determine which
major alarm occurred and the
recommended action.
If a minor shelf alarm is present, it
does not appear on the front panel
because only the highest severity
alarm of a group (system or shelf) is
illuminated. When the major shelf
alarm ends, the minor shelf alarm
LED then lights.
ALARMS
Shelf Critical
Off There is no critical alarm
within the shelf.
None required.
Red A critical alarm condition
exists in the shelf.
Refer to the
TL1 Reference Guide
(see RTRV-ALM) to determine which
critical alarm occurred and the
recommended action.
If a major and/or minor shelf alarm is
present, it does not appear on the
front panel LEDs because only the
highest severity alarm of a group
(system or shelf) is illuminated. When
the critical shelf alarm ends, the LED
associated with the highest- severity
remaining shelf alarm LED then lights.
AUDIBLE
ALARMS
Cutoff (LED)
Off The alarm cutoff function has
not been activated.
None required.
Press the ALARMS Cutoff pushbutton
to silence all audible alarms.
Red An audible or visible alarm
was present. The audible
alarm has been silenced, but
the alarm condition still exists.
None required.
Table 5-3. Management Card Front Panel Items (Continued)
Name State Description Action

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English