Cisco 7600 SIP 200 - SPA Interface Processor 200 Hardware Installation Manual page 104

2-Port Gigabit Synchronous Ethernet SPA Overview
The minimum cable distance for the SFP-GE-S is 6.5 feet (2 m), and the minimum link distance for the
SFP-GE-Z is 6.2 miles (10 km) with an 8-dB attenuator installed at each end of the link. Without
attenuators, the minimum link distance for the SFP-GE-Z is 24.9 miles (40 km).
Table 3-32
SFP Modules
SFP-GE-S
SFP-GE-L
SFP-GE-Z
SFP-GE-T
1. Multimode fiber (MMF) only.
2. A mode-conditioning patch cord is required.
3. Dispersion-shifted single-mode fiber-optic cable.
The 1000BASE-ZX SFP modules provide an optical power budget of 21.5 dB. You should measure your
Note
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.
2-Port Gigabit Synchronous Ethernet SPA Overview
The following sections describe the 2-Port Gigabit Synchronous Ethernet SPA:
•
•
•
Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide
3-58
SFP Module Port Cabling Specifications
Wavelength
(nm)
850
1300
1550
N/A
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).
2-Port Gigabit Synchronous Ethernet SPA LEDs, page 3-59
2-Port Gigabit Synchronous Ethernet SPA Interface Specifications, page 3-59
2-Port Gigabit Synchronous Ethernet SPA Cables and Connectors, page 3-61
Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters
Core Size
Fiber Type (micron)
1
MMF 62.5
62.5
50.0
50.0
2
MMF and 62.5
SMF
50.0
50.0
9/10
SMF 9/10
3
SMF 8
Copper N/A
Modal
Bandwidth Maximum
(MHz/km) Cable Distance
160 722 ft (220 m)
200 984 ft (300 m)
400 1640 ft (500 m)
500 1804 ft (550 m)
500 1804 ft (550 m)
400 1804 ft (550 m)
500 1804 ft (550 m)
— 6.2 miles (10 km)
— 49.7 miles
(80 km)
— 62.1 miles
(100 km)
N/A 328 ft. (100 m)
OL-5052-14