Specifications

3-7
Cisco ONS 15216 EDFA2/EDFA2-A Operations Guide, R2.4
July 2004
Chapter 3 Installation
3.4.3 Serial Interface (EIA/TIA-232) Communication
• Flashing: Power Bus A or B (in duplex mode) has failed or is out of tolerance, or Power Bus A (in
simplex mode) is out of tolerance.
In the off condition, the first pair of alarm relay contacts in the RJ-45 connector changes from a normally
open condition to a closed condition. The LED and alarm automatically reset when the condition clears.
(For additional alarm contact closure information, see the “3.4.1 Alarm Out Relay Interface (RJ-45)”
section on page 3-5.)
3.4.2.2 FAIL LED (Red)
The FAIL LED is red. This LED functions as follows:
• On: The laser pump bias, laser pump temperature, output power, gain, or case temperature is out of
tolerance. (A major internal failure has occurred.)
• Off: The laser pump bias or laser pump temperature is in the specified range (or no –48 VDC power
is present).
In the on condition, the second pair of alarm relay contacts in the RJ-45 connector changes from a
normally open to a closed condition. If an invalid input optical signal is applied to the ONS 15216
EDFA2, the Fail LED is illuminated. The LED and alarm automatically reset when the condition clears.
3.4.2.3 LOS LED (Yellow)
The loss of signal (LOS) LED is yellow. This LED functions as follows:
• On: The optical input power to the ONS 15216 EDFA2 is below the loss of input threshold. (A LOS
threshold decision occurs.)
• Off: The optical input power is within the input threshold (or no –48 VDC power is present).
In the on condition, the third pair of alarm relay contacts in the RJ-45 connector changes from a normally
open condition to a closed condition. The LED and alarm automatically reset when the condition clears.
3.4.2.4 Ethernet Socket LEDs
Two LEDs are located at the top left and right sides of the Ethernet socket. These LEDs are both green.
These LEDs function as follows:
• If left Ethernet socket LED is on, the link is up.
• If right Ethernet socket LED is on or flashing, there is Ethernet traffic.
3.4.3 Serial Interface (EIA/TIA-232) Communication
This section describes communication with the ONS 15216 EDFA2 using a serial connection.
3.4.3.1 Required Equipment
Establishing a serial communications link with a ONS 15216 EDFA2 requires the equipment listed in
Table 3-3.