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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
8-Port Gigabit Ethernet SPA Overview
Note The 1000BASE-ZX SFP modules provide an optical power budget of 21.5 dB. You should measure your
cable plant with an optical loss test set to verify that the optical loss of the cable plant (including
connectors and splices) is less than or equal to 21.5 dB. The optical loss measurement must be performed
with a 1550-nm light source.
8-Port Gigabit Ethernet SPA Overview
The following sections describe the 8-Port Gigabit Ethernet SPA:
• 8-Port Gigabit Ethernet SPA LEDs, page 3-33
• 8-Port Gigabit Ethernet SPA Cables and Connectors, page 3-33
Ta b l e 3-18 SFP Module Port Cabling Specifications
SFP Modules
Wavelength
(nm) Fiber Type
Core Size
(micron)
Modal
Bandwidth
(M
Hz/km)
Maximum
Cable Distance
SFP-GE-S 850 MMF
1
1. Multimode fiber (MMF) only.
62.5 160 722 ft (220 m)
62.5 200 984 ft (300 m)
50.0 400 1640 ft (500 m)
50.0 500 1804 ft (550 m)
SFP-GE-L 1300 SMF 62.5 500 1804 ft (550 m)
50.0 400 1804 ft (550 m)
50.0 500 1804 ft (550 m)
9/10 — 6.2 miles (10 km)
SFP-GE-Z 1550 SMF 9/10 — 49.7 miles
(80 km)
SMF
2
2. Dispersion-shifted single-mode fiber-optic cable.
8 — 62.1 miles
(100 km)
SFP-GE-T N/A Copper N/A N/A 328 ft. (100 m)