Cisco ONS 15454 DWDM - Figure 1-31 AEP Printed Circuit Board Assembly; Figure 1-32 AEP Block Diagram

1-33
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 1 Shelf Assembly Hardware
1.9 ONS 15454 ANSI Alarm Expansion Panel
Figure 1-31 AEP Printed Circuit Board Assembly
Figure 1-32 shows the AEP block diagram.
Figure 1-32 AEP Block Diagram
Each AEP alarm input port has a provisionable label and severity. The alarm inputs have optocoupler
isolation. They have one common 32-VDC output and a maximum of 2 mA per input. Each opto-metal
oxide semiconductor (MOS) alarm output can operate by definable alarm condition, a maximum open
circuit voltage of 60 VDC, and a maximum current of 100 mA. See the “16.6 External Alarms and
Controls” section on page 16-13 for further information.
Figure 1-33 shows the wire-wrapping connections on the shelf backplane used to connect to the AEP.
78471
Input Connector
Output Connector
AIC-I Interface
(wire wrapping)
TIA/EIA 485 In Alarm Relays
Out Alarm Relays
Inventory data
(EEPROM)
AEP/AIE
CPLD
Power Supply
78406