Cisco Systems 15216 EDFA2 manual Alarm Indicators, LEDs and Office Alarms

Chapter 10 Troubleshooting

Alarm Indicators

F I N A L D R A F T - C I S C O C O N F I D E N T I A L

10.1 Alarm Indicators

10.1.1 LEDs and Office Alarms

The front panel of the ONS 15216 EDFA2 has five LEDs:

•POWER

•FAIL

•LOS

•Ethernet socket (2)

On the left side of the front panel of the ONS 15216 EDFA2 are the POWER, FAIL, and LOS alarm LEDs. The Ethernet LEDs are located at the top left and right sides of the Ethernet LAN port. When the module is powered on, a LED test is performed.

The POWER, FAIL, and LOS LEDs correspond to Office Alarm conditions sent via the RJ-45 ALARM port (if used). For additional alarm contact pinout information, see the “Alarm Out Relay Interface (RJ-45)” section on page 3-5.

10.1.1.1 POWER LED (Green)

The POWER LED is green when on. This LED functions as follows:

•On: –48 VDC power supply is within tolerance. (Power Bus A and B are powered normally.)

•Off: If in duplex mode, both Power Bus A and B have failed (below –40 VDC) and remain below the minimum turn-on supply voltage (-43 VDC). If in simplex mode, Power Bus A has failed (below

–40 VDC) and remains below the minimum turn-on supply voltage (-43 VDC). Note that the power bus turn-off threshold has a 1.0V tolerance.

•Flashing: PWRBUSA or PWRBUSB alarm. If in duplex mode, Power Bus A, or B, or both are out of the user-settable tolerance range. If in simplex mode, Power Bus A is out of the user-settable tolerance range. The tolerance range is defined by PWRBUSMIN and PWRBUSMAX. The power bus alarm threshold has a 1.0V tolerance and a 1.0V hysteresis.

If flashing, the problem may be an inappropriate setting of the Power Bus alarm or a power failure. First, check the alarm thresholds using RTRV-TH-ENV. The default values are POWERBUSMIN=400 (-40 VDC) and POWERBUSMAX=570 (-57 VDC). If the POWER LED is flashing, it means that the current voltage applied to one of the power buses is outside that range. The command RTRV-ALARM-ENV responds with which POWERBUS is outside of the range. If Power Bus B is absent on purpose, use the command ED-ENV to set the POWERBUSMODE to SIMPLEX. If all the settings are correct, verify the DC voltage of the power source.

Office Alarm: In the off condition, the first pair (0) 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.

In the flashing condition, the fourth pair (3) 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.

Cisco ONS 15216 EDFA2 Operations Guide

10-2 78-16033-01