6-7
Cisco SCE8000 GBE Installation and Configuration Guide
OL-19897-02
Chapter 6 Cabling the GBE Line Ports and Completing the Installation
Cabling the GBE Line Interface Ports
SFP Module Cabling and Connection Equipment
Table 6-3 provides cabling specifications for the SFP modules that can be installed on the 8-Port Gigabit
Ethernet SPA. Note that all SFP ports have LC-type connectors.
Minimum cable distances are as follows:
• SFP-GE-S: 6.5 feet (2 m)
• SFP-GE-Z with an 8-dB attenuator installed at each end of the link: 6.2 miles (10 km)
• SFP-GE-Z without attenuators: 24.9 miles (40 km).
1
Multimode fiber (MMF) only.
2
A mode-conditioning patch cord is required.
When using the SFP-GE-L with 62.5-micron diameter MMF, you must install a mode-conditioning
patch cord between the SFP module and the MMF cable on both the transmit and the receive ends of
the link when link distances are greater than 984 ft (300 m).
We do not recommend using the SFP-GE-L and MMF with no patch cord for very short link distance
(tens of meters). The result could be an elevated bit error rate (BER).
3
Dispersion-shifted single-mode fiber-optic cable
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.
Table 6-3 SFP Module Port Cabling Specifications
SCE Model
Wavelength
(nm) Fiber Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Maximum Cable Distance
SFP-GE-S 850 MMF
1
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 MMF and SMF
2
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
3
8 — 62.1 miles (100 km)
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