CANOGA PERKINS 2345 T3 Fiber Optic Modem - Manual (Page 33)

EdgeAccess Universal Chassis System
Model 2345 User Manual 4-3
The LEDs show both normal and fault conditions. Typically, if a LED is steady red, the fault is the
local 2345; if it blinks red, the fault is in the remote modem. In particular, if SQL is red, the optical
signal level is below threshold and if CLS is red, the optical signal is lost. For details on the LED
status during start-up and operation, see Table 3 in Chapter 3.
Additional information about fault conditions appears in the System Alarms, Hardware
Configuration, and Functional Configuration screens.
• CLS and SQL LEDs light red
• Inspect and clean the optical cables and connectors, then replace any damaged fiber.
• SQL LED lights red
• Inspect and clean the optical cables and connectors, then replace any damaged fiber.
• CLS LED lights red or the System Alarms screen shows a Fiber Loss of Signal
• Inspect and clean the optical cables and connectors, then replace any damaged fiber. Retest
the 2345 after cleaning.
• LOS LED lights red or the System Alarms screen shows an Electrical Loss of Signal
• Check the BNC cables to be sure that Tx and Rx are not crossed.
• System Alarms screen shows Configuration Error with OLIM
• Check that both ends of the link use the same OLIM.
• System Alarms screen shows Configuration Error with OS (Operating System)
• Not all modems in the domain are using the same software; see for details on checking the
software version number and updating the software.
• System Alarms screen shows Configuration Error with Setup
• Check the redundancy setup on the Functional Configuration screen.
• CLS LED lights red or the System Alarms screen shows Configuration Error with OS; system
includes a new 2345 or new OLIM
• Not all modems in the domain are using the same software; see for details on checking the
software version number and updating the software.
Check a New Installation
On new installations, make sure that all steps in Chapter 2, are complete, then make these checks:
• The STA LED is green
• All fiber cabling is of the same type and matches the 2345 optical mode; do not mix multimode
and single mode cables
• The fiber optic cable is within the specifications and loss budget of the optic interface module
• The line length between the 2345 and the remote link does not exceed the allowable loss budget
or overdrive limit
• All host modules in the link are turned on
• All fiber cables are connected Tx to Rx and Rx to Tx