Cisco ONS 15454 DWDM Reference Manual

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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 1 Shelf Assembly Hardware
1.4.2 Single Y-Cable Protection Module
Figure 1-10 Typical Y-Cable Protection Module Configuration
When the module is used in the coupler direction, the individual signals enter the module from the
CPL-RXn ports and pass through a passive star coupler to the CPL-TX port. The coupler is not meant to
combine both the protect and working client card signals. The module allows a path for the working
client transmit interface to connect to the network in the event the opposite interface in the protection
pair should fail (the protect interface switches to the working interface).
When the module is used in the splitter direction, the signal enters the module from the SPL-RX port
and is split through a passive star coupler to the SPL-TXn ports. This module, although designed to pass
wavelengths associated with the ONS 15454 32-channel plan, is not selective to specific wavelengths
(modules do not filter wavelengths).
Figure 1-11 shows the block diagram of the Y-cable protection module.
90938
Client
Protecting
Card
TX
RX
Y_Cable
Protection
Module
Line
Line
Client
Working
Card
TX
RX

Cisco ONS 15454 DWDM Specifications

General

Chassis Type	DWDM
Form Factor	Rack-mountable
Slots	17
Storage Temperature	-40 to 158°F (-40 to 70°C)
Relative Humidity	5% to 95% non-condensing
Power Supply	AC or DC
Cooling	Internal fans
Operating Temperature	23 to 104°F (-5 to 40°C)
Altitude	0 to 6500 ft (0 to 1981 m)
Safety Compliance	EN 60950-1
EMI Compliance	FCC Part 15