Chapter 2 Module Description
Module Status Indicators
2-6
255-700-714R11.0
PacketStar
®
PSAX 1-Port Channelized OC-3/STM-1 CES Module User Guide
, Issue 1
Release 11.0.0
Table 2-4. LED Indicators for the 1-Port Channelized OC-3/STM-1 CES Modules
LED
Module Status
Initial
Power-On
No
Configured
Ports
One or More
Configured Ports
No Cable on
Port
Cable on Port
FAIL
(red)
Lights
briefly
*
Lights
briefly dur-
ing operat-
ing mode
changeover
•
Lights when
the module is
not functioning
•
Lights briefly
during operat-
ing mode
changeover
Not
Applicable
Not
Applicable
ACTIVE
(green)
Lights
briefly
*
Not lit
Lights only when
the module is
functioning prop-
erly
Not
Applicable
Not
Applicable
LOS
(Loss of
Signal)
(yellow)
Lights
briefly
†
Not
Applicable
Not
Applicable
Lights
• Does not light if sig-
nal is being received
• Lights if signal is
missing
*
After power is initially applied to the system and the system boot is complete, the FAIL and ACTIVE
LEDs indicate whether the module has no configured ports (red), or one or more configured ports
(green).
†
After power is initially applied to the system and the system boot is complete, the LOS LED indicates
whether the receive port is receiving a valid signal from the far end of a connected cable.
