Cisco Prisma DS3 E3 STS-1 Converter with Remote Management Installation Guide

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Prisma FiberLinX Gigabit Module Installation Instructions 
4008630 Rev B 
Troubleshooting 
Troubleshooting the Prisma FiberLinX Gigabit Module 
 
Condition Possible 
Cause 
If you cannot 
establish a fiber link 
•  Make sure that the fiber transceivers on Prisma 
FiberLinX Gigabit modules are not over/under driving 
the fiber receivers.  For fiber specifications, please contact 
Scientific-Atlanta technical support. 
•  Make sure the fiber mode and wavelength on both 
Prisma FiberLinX Gigabit modules match (i.e., both are 
1310 nm single-mode fiber). 
•  If using the FiberAlert feature, make sure that FiberAlert 
is enabled on only one unit when connecting two Prisma 
FiberLinX Gigabit modules or when connecting a Prisma 
FiberLinX Gigabit module to another Scientific-Atlanta 
media converter which includes the FiberAlert feature. 
If you cannot 
establish a link on a 
twisted-pair port 
•  Make sure cable connection is good; if not, replace the 
cable.  
Note:  Prisma FiberLinX Gigabit module includes 
AutoCross. You should detect link regardless of the 
CAT-5 cable type. 
•  Make sure the port speeds on the Prisma FiberLinX 
Gigabit module match those on the end devices 
connected to the Prisma FiberLinX Gigabit module. 
Scientific-Atlanta recommends configuring all connected 
devices to Auto-Negotiation, or if using Force mode, be 
sure speed and duplex match. 
If two Prisma 
FiberLinX Gigabit 
modules are not 
communicating 
properly 
•  Make sure one is a Host and the other is a Remote. If the 
second unit is NOT configured as a Remote, it will be 
recognized as a Standalone unit and the Host and 
Remote units will not communicate properly.  
 
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