CANOGA PERKINS 3240S SNMP-Managed T1/E1 Fiber-Optic Multiplexer - Manual (Page 18)

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 receives +5 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 3240S Fiber-Optic Multiplexer