Cisco 15216 EDFA2 Specifications Page 241

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10-3
Cisco ONS 15216 EDFA2/EDFA2-A Operations Guide, R2.4
July 2004
Chapter 10 Troubleshooting
10.1.1 LEDs and Office Alarms
Off: The gain, output power, case temperature, laser pump current, and laser pump temperature are
all within their specified ranges (or –48 VDC power has failed).
On: GAIN, LPOUT, CTMP, LCRNT1, LCRNT2, LTMP1, and/or LTMP2 alarm. The gain, output
power, case temperature, laser pump current, and/or laser pump temperature are out of tolerance. (A
major internal failure has occurred.)
If on, access the ONS 15216 EDFA2 to determine which alarms have occurred (Example 10-1). See the
sections 10.1.2 Troubleshooting Optical Alarms and 10.1.3 Troubleshooting Equipment Alarms that
follow for information about how to troubleshoot a particular alarm.
Office Alarm: In the on condition, the second pair (1) of alarm relay contacts in the RJ-45 ALARM
connector changes from a normally open to a closed condition. The LED and alarm relay automatically
reset when the alarm condition clears.
Example 10-1 Checking Alarm Source
Amp01:ONS15216 EDFA2>
RTRV-ALM-ALL:AMP01::123::,,,,,;
þAmp01 2004-03-17 00:29:54
M þ123 COMPLD
þ"EQPT,EQPT:MN,CTMP,NSA,3-17,0-29-43,,:\"Case Temperature Out Of Range\""
;
10.1.1.3 LOS LED (Yellow)
The Loss of Signal (LOS) LED is yellow when on. This LED functions as follows:
Off: The optical input power is above the user-settable minimum threshold (or –48 VDC power has
failed).
On: LOS alarm. The optical input power to the ONS 15216 EDFA2 is below the threshold defined
by LOSTH. The value of LOSHYST provides the hysteresis required for the alarm to clear.
If on, see 10.1.2.1 LOS (Loss of Signal) Alarm, page 10-4 for information about how to troubleshoot
the LOS alarm.
Office Alarm: In the on condition, the third pair (2) of alarm relay contacts in the RJ-45 ALARM
connector changes from a normally open condition to a closed condition. The LED and alarm relay
automatically reset when the alarm condition clears.
10.1.1.4 Ethernet Socket LEDs
Two LEDs are located at the top left and right sides of the Ethernet socket (LAN port). These LEDs are
both green. These LEDs function as follows:
If the left Ethernet socket LED is on, the link is up.
If the right Ethernet socket LED is on or flashing, there is Ethernet activity (traffic).
Note If the system is powered up without an Ethernet cable in the Ethernet socket (LAN port), the activity
LED (right side) turns on and remains on even if there is not Ethernet traffic. See “10.2.8 LAN Port
Activity LED Stays On” section on page 10-11.
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