Cisco 6513 - Catalyst Switch Installation Manual page 217

Appendix B Pluggable Transceiver Modules
Table B-5 GBIC Transceiver Module Cabling Specifications (continued)
GBIC Transceiver Interface
Model and Product Connector
Number
1000BASE-LX/LH SC duplex
(WS-G5486)
6
1000BASE-ZX SC duplex
(WS-G5487)
1. The numbers given for multimode fiber-optic (MMF) cable refer to the core diameter.
2. Cable distances are based on fiber loss. Additional factors, such as the number of splices and the optical quality of the fiber, can affect cabling
distances.
3. Use with MMF only.
4. When using an LX/LH GBIC transceiver with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord (CAB-GELX-625 or
equivalent) between the GBIC transceiver and the MMF cable on both the transmit and receive ends of the link. The mode-conditioning patch cord
is required for link distances less than 328 feet (100 m) or greater than 984 feet (300 m). The mode-conditioning patch cord prevents overdriving
the receiver for short lengths of MMF and reduces differential mode delay for long lengths of MMF.
5. ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
6. Use with SMF only.
7. Dispersion-shifted single-mode fiber-optic cable.
8. The minimum link distance for ZX GBICs is 6.2 miles (10 km), when an 8-dB attenuator is installed at each end of the link. Without attenuators,
the minimum link distance is 24.9 miles (40 km).
Table B-6
Table B-6
1-GB GBIC Transceiver
Product Number
WS-G5484
(1000BASE-SX)
WS-G5486
(1000BASE-LX/LH)
WS-G5487
(1000BASE-ZX)
1. The 1000BASE-ZX GBIC transceiver provides a minimum optical power budget of
OL-6265-03
Nominal Network
Wavelength Cable Type
(nm)
1310 MMF
SMF
1550 SMF
SMF
lists the fiber loss budgets for the GBIC transceivers.
Fiber Loss Budgets for the 1-GB GBIC Transceivers
23 dB. To determine the supported link distance, you need to 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 value. The optical measurement
must be performed with a 1550 nanometer light source.
Fiber Core Modal Bandwidth
1
Size (MHz km)
(micron)
4
62.5 500
50.0 400
50.0 500
5
G.652 —
5
G.652 —
7 5
G.652 —
Transmit (dBm) Receive (dBm)
–3 (maximum) 0 (maximum)
–9.5 (minimum) –17 (minimum)
–3 (maximum) –3 (maximum)
–9.5 (minimum) –19 (minimum)
5 (maximum) –3 (maximum)
0 (minimum) –23 (minimum)
Catalyst 6500 Series Ethernet Modules Installation Guide
1-GB Transceivers
2
Cable Distance
1804 ft (550 m)
1804 ft (550 m)
1804 ft (550 m)
6.2 mi (10 km)
8
43.5 mi (70 km)
62.1 mi (100 km)
1
B-5