ADC Telecommunications Inc. F0694-011 Benutzerhandbuch

4-6

CONFIDENTIAL

Green / Green

Green / Green 
(60-ppm)

• Optical power received is above minimum (the Main Hub is con-

nected) although the cable optical loss may be greater than recom-
mended maximum.

• Optical power transmitted (uplink laser) is normal and communica-

tions with the Main Hub are normal.

• The Expansion Hub is reporting a commanded lockout.

Green / Red

Red / Green

• A fault condition was detected, optical power received is below mini-

mum. 
(the Main Hub is not connected, is not powered, or the Main Hub’s 
downlink laser has failed, or the downlink fiber is disconnected or 
damaged.)

Green / Green

Red / Red

• The Expansion Hub is reporting a fault condition.
• Optical power received is above minimum (Main Hub is connected) 

although the cable optical loss may be greater than recommended 
maximum.

• Optical power transmitted is below minimum (Expansion Hub uplink 

laser has failed; unable to communicate with Main Hub). 

 

LED state must be checked within the first 90 seconds after power on. 
If initially green, then red after 90 seconds, it means that there is no 
communication with the Main Hub. If red on power up, replace the 
Expansion Hub.

Green / Red

Red / Red

• Optical power received is below minimum (the Main Hub is not con-

nected, is not powered, or the Main Hub’s downlink laser has failed, 
or the downlink fiber is disconnected or damaged.)

• Optical power transmitted is below minimum (the Expansion Hub 

uplink laser has failed; is unable to communicate with the Main Hub). 

 LED state must be checked within the first 90 seconds 

after power on. If initially green, then red after 90 seconds, it means 
that there is no communication with the Main Hub. If red on power 
up, the uplink laser has failed, replace the Expansion Hub.

Green /Off

Green / Off

• Expansion Hub is in factory test mode, return it to the factory.

Red/ Don’t 
Care

Red/ Don’t 
Care

• One or more power supplies are out of specification. The hub needs to 

be replaced.

Green/ Red

Off/ Off

• Expansion Hub failure. The Hub must be replaced.