Filter
Top Products
A-5
Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
Appendix A Specifications
Gigabit Ethernet GBIC Configurations and Port and Cabling Specifications
A mode-conditioning patch cord can be used with the GBIC-LX/LH or WS-G5486 to allow reliable laser
transmission between the single-mode laser source on the GBIC and a multimode optical fiber cable.
GBIC-SX or WS-G5484
The GBIC-SX or WS-G5484 operates on standard multimode fiber-optic link spans of up to 1804 feet
(550 m).
GBIC-LX/LH or WS-G5486
The GBIC-LX/LH or WS-G5486 1000BASELX/LH (long wavelength/long haul) GBIC interfaces fully
comply with the IEEE 802.3z 1000BASELX standard. However, their higher optical quality allows them
to reach 10 km over single-mode fiber (SMF) versus the 3.1 miles (5 km) specified in the standard.
Table A-7 GBIC Port Cabling Specifications
GBIC
Wave-
length
(nm) Fiber Type
Core Size
(micron)
Modal Bandwidth
(MHz/km)
Maximum
Cable Distance
GBIC-SX or
WS-G5484
850 MMF
1
1. Multimode fiber (MMF) only.
62.5 160 722 ft (220 m)
62.5 200 902 ft (275 m)
50.0 400 1640 ft (500 m)
50.0 500 1804 ft (550 m)
GBIC-LX/LH or
WS-G5486
1300 MMF
2
and
SMF
2. A mode-conditioning patch cord is required.
When using the GBIC-LX/LH or WS-G5486
with 62.5-micron diameter MMF, you must install a mode-conditioning patch
cord between the GBIC 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 GBIC-LX/LH or WS-G5486 and MMF with no patch cord for very short link distances (tens
of meters). The result could be an elevated bit error rate (BER).
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)
GBIC-ZX
3,4
or
WS-G5487
Extended distance
(1000BASEZX)
5
3. You can have a maximum of 12 1000BASEZX GBICs per system to comply with EN55022 Class B regulations and 24
1000BASEZX GBICs per system to comply with FCC Class A regulations.
4. The minimum link distance for the GBIC-ZX or WS-G5487 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 GBIC-ZX or WS-G5487 is 24.9 miles (40 km).
5. Contains a Class 1 laser of 1550 nm for 1000BASEZX (extended wavelength) applications.
1550 SMF 9/10 — 43.5 miles (70 km)
SMF
6
6. Dispersion-shifted single-mode optical fiber cable.
8 — 62.1 miles (100 km)