Cisco 1000BASE-LX/LH long haul GBIC (SM/MM) WS-G5486= Datenbogen
Produktcode
WS-G5486=
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Note: A mode-conditioning patch cord (product number CAB-GELX-625 or equivalent) is required to comply
with IEEE standards. The IEEE found that link distances could not be met with certain types of fiber-optic cable
cores. The solution is to launch light from the laser at a precise offset from the center, which is accomplished by using
the mode-conditioning patch cord. At the output of the patch cord, the Cisco 1000BASE-LX/LH GBIC is compliant
with the IEEE 802.3z standard for 1000BASE-LX.
Standards
Compatible with GBIC standard as specified in IEEE 802.3z
Compliant with GBIC Specification Revision 5.4
Table 1
Cisco GBIC Port Cabling Specifications
GBIC
Wavelength
(nm)
(nm)
Fiber
type
type
Coresize
(micron)
(micron)
Modal
bandwidth
(MHz/km)
bandwidth
(MHz/km)
Cable
distance
distance
Cisco
1000BASE-SX
1000BASE-SX
850
MMF
62.5
62.5
50.0
50.0
160
200
400
500
722 ft (220 m)
902 ft (275 m)
1640 ft (500 m)
1804 ft (550 m)
Cisco
1000BASE-
LX/LH
1000BASE-
LX/LH
1300
MMF
1
SMF
62.5
50.0
50.0
9/10
500
400
500
N/A
1804 ft (550 m)
1804 ft (550 m)
1804 ft (550 m)
6.2 miles (10 km)
Cisco
1000BASE-ZX
1000BASE-ZX
1550
SMF
9/10
N/A
43.4 to 62 miles
(70 to 100 km)
(70 to 100 km)
2
1. Mode-conditioning patch cord (CAB-GELX-625 or equivalent) is required. Using an ordinary patch cord with MMF, 1000BASE-LX/LH GBICs, and a short link
distance (10s of meters) can cause transceiver saturation resulting in an elevated bit error rate (BER). In addition, when using the Cisco 1000BASE-LX/LH GBIC
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 receive ends of
the link. The mode-conditioning patch cord is required for link distances greater than 984 feet (300 m).
2. Cisco 1000BASE-ZX GBIC can reach up to 62 miles (100 km) by using dispersion shifted SMF or low-attenuation SMF; the distance depends on fiber quality,
number of splices, and connectors.
distance (10s of meters) can cause transceiver saturation resulting in an elevated bit error rate (BER). In addition, when using the Cisco 1000BASE-LX/LH GBIC
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 receive ends of
the link. The mode-conditioning patch cord is required for link distances greater than 984 feet (300 m).
2. Cisco 1000BASE-ZX GBIC can reach up to 62 miles (100 km) by using dispersion shifted SMF or low-attenuation SMF; the distance depends on fiber quality,
number of splices, and connectors.
Table 2
Fiber Loss Budgets for 1000BASE-SX, 1000BASE-LX, and 1000BASE-ZX
Device
Type
Transmit (dBm)
Receive (dBm)
Max
Min
Max
Min
WS-G5484
1000BASE-SX
–4
–9.5
0
–17
WS-G5486
1000BASE-LX/LH
–3
–9.5
–3
–19
WS-G5487
1000BASE-ZX
5
0
–3
–23
1
1. The WS-G5487 1000BASE-ZX GBIC provides a minimum optical power budget of 23 dB. To determine the supported link distance 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 this figure. The optical
loss measurement must be performed with a 1550-nanometer light source.
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 this figure. The optical
loss measurement must be performed with a 1550-nanometer light source.