EdgeAccess
Each I/O card includes three LEDs and one switch for each port:
•
LOS: On when no signal is present on the input
•
AIS: On when an "all 1s" signal is present on the input
•
LOOP: Follows the Port MODE switch and software management; shows active loopback
•
MODE switch: For local loopback, set to LOC; for normal operation, set to NOR; for remote
loopback, set to REM; to control the operating mode through software, set to NOR
Figures 1 and 2 show the locations of the system setup switches and LEDs. The LEDs listed in
Table 2 are located on the front and rear panels of the chassis:
Note: A single power supply is always installed in power supply B location and the PWRB LED
shows its status.
Table 2. System LEDs
LED
State
Function
PWRA/PWRB
Off
Power for main circuit card off
On
Main circuit card re5 VDC from power supply(s)
SYNC LOSS
Off
Normal operation
On
Optical receiver cannot synchronize with the signal coming
from the remote multiplexer
LOOP Off
Normal
operation
On
Loopback active; follows MODE switch and software setting
SLV
Off
MAST/SLV switch set to Master
On
MAST/SLV switch set to Slave
AUTO (redundant optics) Off
PRI/AUTO/SEC switch set to PRI or SEC
On
PRI/AUTO/SEC switch set to AUTO
SEC (redundant optics)
Off
Primary link operating
On
Secondary link operating
ALM (redundant optics)
Off
Normal operation
On
Secondary link failed or the link switched over automatically
Backup (Front panel)
Off
Normal operation
On
Alarm occurred or the link switched over automatically
When power-up is successful and data is transmitting normally across the link, the power LED(s)
lights green, the SLV LED lights red if in slave mode, the redundant optics LED matches the switch
setting, the activity LED on the SNMP module flashes, and all other LEDs on the chassis and I/O
cards are off.
2-6 3240
S Fiber-Optic Multiplexer
Summary of Contents for 3240S
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