Cisco Systems 15454 specifications OPT-BST-L Card Standard and Extended Gain Range

Chapter 2 Cards Specifications

2.2.4 Optical Amplifiers

•Full monitoring and alarm handling capability with settable thresholds

•Supported optical safety functionality by signal loss detection and alarm, fast power down control, and reduced maximum output power in safe power mode

The OPT-BST-L card implements the following optical safety functions:

•Optical Safety Remote Interlock (OSRI)

•Automatic Laser Shutdown (ALS)

The OSRI function provides hardware and software capability for shutting down or reducing the output optical power to a safer level, whereas the ALS function provides a safety mechanism (automatic power reduction [APR]) for fiber cuts.

Table 2-25defines all power and gain specifications for OPT-BST-L card:

Table 2-25	OPT-BST-L Card Power and Gain Specifications
Parameter		Comment	Min		Typical		Max	Unit
Operative input power range		Full channel load	–10		—		9	dBm
		Single channel	–37		—		–18	dBm
Maximum total output		FW or HW limited	—	—		17.5		dBm
power
Signal output power range		Full channel load	—	—		17		dBm
		Single channel	–10		—			dBm
Standard gain range		Controllable gain tilt	8		—	20		dB
Extended gain range		Gain tilt uncontrolled	20		—	27		dB

Figure 2-8shows the standard and extended gain range for the OPT-BST-L card. Red lines indicate the total measurement range accomplished by the photodiodes.

Figure 2-8 OPT-BST-L Card Standard and Extended Gain Range

Cisco ONS 15454 DWDM Engineering and Planning Guide, Release 7.x

July 2006 2-35