Specifications

4-8

Cisco ONS 15216 EDFA Operation Guide

78-12818-01

Chapter 4 Provisioning and Monitoring

Alarm Contact Closures

Note Pins 1,4, and 6 are internally connected to each other and are not connected to any other component of

the ONS 15216 EDFA1. Pins 7 and 8 are internally connected to each other and are not connected to any

other components of the ONS 15216 EDFA1. These pins can also be used to simplify future cabling

requirements.

Figure 4-7 DB-9 pinouts

Using the terminal program from the PC, enter the ATDT command with the appropriate telephone

number to call the remote ONS 15216 EDFA1 modem. After the modems synchronize, log into the ONS

15216 EDFA1 using the @ command. See Chapter 5, “Command Line Reference,” for additional

information about commands.

Alarm Contact Closures

The ONS 15216 EDFA1 provides a front panel single Form C discrete external alarm output. The

external alarm output is through the eight wires of an RJ-45 connector.

The following events are reported by the discrete external alarms through individual alarm contacts:

• Loss of power supply–Alarm 0

• Pump laser overheating (temperature) or out of bias threshold condition (temperature)–Alarm 1

• Loss of optical input signal–Alarm 2

Note The default state of the alarm contacts are Normally Open. Depending on which fault condition occurs,

specific alarm contacts will close and cause the corresponding ONS 15216 EDFA1 LEDs to light (see

the “ONS 15216 LED Alarm Definitions” section on page 2-7 for additional information).

Table 4-6 lists the RJ-45 pinout for the alarms.

GND TXD RXD

61974

Table 4-6 RJ-45 Pinout

Pinout Alarm

1 Alarm 0+ (Power)

2Alarm 0-

3 Alarm 1 +(Major)

4Alarm 1 -

5 Alarm 2 +(Minor)

6Alarm 2 -