Cisco Systems 15454 specifications 3.4 32DMX-L Card, Out, Pdl

Chapter 2 Cards Specifications

2.2.3 Optical Add and Drop Cards

Table 2-10	32DMX Card Optical Parameters and Insertion Loss
Parameter		Condition		Min		Typical		Max		Unit
–1 dB Bandwidth		COM RX => TX 1, 32		+/–110		—		—	pm
		(OUT)
–3 dB Bandwidth				+/–200		—		—
Insertion Loss		COM RX => TX 1, 32		—	—		5.5		dB
Adjacent Crosstalk		COM RX => TX 1, 32		26		—	—		dB
Nonadjacent Crosstalk				34		—	—
Total Crosstalk				20		—	—
PDL		COM RX => TX 1, 32		—	—		0.5		dB
In Band Chromatic		All paths		–20		—		+20	ps/nm
Dispersion
Group Delay Ripple		All paths		–10		—		+10	ps
In Band PMD		All paths		—	—		0.5		ps
VOA attenuation Setting		—	—		—	0.1			dB
Resolution
VOA Attenuation Setting		Attenuation range		–0.5				+ 0.5		dB
Accuracy		0 – 10 dB
VOA Attenuation Setting		Attenuation range		–0.1				+ 0.1		dB
Precision		0 – 10 dB
Power Monitoring		All PDs (both real and		—	—		20		ms
Indication Response		virtual)
Time Internal Cycle
Optical Power/VOA		—	—		—	200			ms
Attenuation Settling time
VOA shut-off		COM RX => TX 1, 32		40		—	—		dB
Attenuation (AVS)
Directivity		—	40		—		—		dB
Return Loss		—	40		—		—		dB
Maximum Optical input		—	300		—		—		mW
power
Maximum AWG Start-up		—	—		—	10			min.
time

2.2.3.4 32DMX-L Card

The 32DMX-L is a unidirectional unit that operates over the L band of the optical spectrum in wavelengths from 1577 nm to 1605 nm. The 32DMX-L card receives the aggregate optical signal through the COM-RX port and demultiplexes all 32 wavelengths onto its output ports. Every port has a photodiode for optical power monitoring. The common path is equipped with a common VOA for optical power regulation.

The single VOA on the common path is the main difference between the 32DMX-L card and the 32DMX-O card, which has 32 VOAs, one for each output port. The 32DMX-L cannot provide power regulation for each individual channel.

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

July 2006 2-23