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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
OC192 LR/STM64 LH 1550 Card
Figure 3-42 OC192 LR/STM64 LH 1550 Block Diagram
Warning
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments.
3.25.3 OC192 LR/STM64 LH 1550 Card Specifications
• Line
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Bit Rate: 9.95328 GBits/s (Gbps)
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Code: Scrambled NRZ
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Fiber: 1550 nm Single Mode
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Maximum chromatic dispersion allowance: 1600 ps/nm
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Loopback Modes: Terminal and Facility
You must use a 20 dB fiber attenuator (19 to 24dB) when working with the OC192 LR/STM64
LH 1550 card in a loopback. Do not use fiber loopbacks with these cards.
–
Connectors: SC
–
Compliance: ITU-T G.707, ITU-T G.957
• Transmitter
–
Maximum Transmitter Output Power: +10 dBm (see remark)
–
Minimum Transmitter Output Power: +7 dBm (see remark)
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Center Wavelength: 1545 nm – 1555 nm
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Nominal Wavelength: 1550 nm
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Transmitter: LN (Lithium Niobate) external modulator transmitter
• Receiver
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