LED Overview 5-3
3930 Service Delivery Switch Hardware Installation and Start-up Manual
009-3223-001 Standard Revision E
Copyright
©
2012-2014 Ciena
®
Corporation January 2014
Table 5-1
Unit Status LEDs on 3930 Standard and 3930 Sync systems
LED Indication Description
STAT Off System is not powered or is not operating normally.
Green Indicates status normal/system ready.
Blinking Green System is initializing and performing self tests.
PWR Green Turns on when power is applied and remains on until the
system is powered off.
ALRM Off Normal operating conditions.
Yellow An error has been detected.
TEMP Off System temperature is within the defined operating range.
Yellow Over temperature alarm condition present. The system
temperature has exceeded the operating temperature
range.
Table 5-2
Unit Status LEDs on a 3930 Sync + External Timing system
LED Indication Description
STAT Off System is not powered or is not operating normally.
Green Indicates status normal/system ready.
Blinking Green System is initializing and performing self tests.
ALRM Off Normal operating conditions.
Yellow An error has been detected.
SYNC Off System is in free run timing mode.
Green System is locked to a synchronization source (external
input such as 1588, SyncE, etc).
Blinking Green System is acquiring synchronization.
Yellow System is in holdover timing mode.
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