Cable Pinouts - Cisco Catalyst 2975 Hardware Installation Manual

Cables and Adapters
Table B-1
SFP Module
CWDM
1. Requires a mode-conditioning patch cord. An ordinary patch cord with MMF, 1000BASE-LX/LH SFP modules, and a short
2. ITU-T G.652 SMF as specified by the IEEE 802.3a standard.
3. 1000BASE-ZX SFP modules can send data up to 62 miles (100 km) by using dispersion-shifted SMF or low-attenuation

Cable Pinouts

Figure B-5
Switch
1 TPO+
2 TPO-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
Figure B-6
Switch
1 TPO+
2 TPO-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
Catalyst 2975 Switch Hardware Installation Guide
B-4
Fiber-Optic SFP Module Port Cabling Specifications (continued)
Wavelength
(nanometers)
1470, 1510,
1530, 1550,
1570, 1590,
1610
link distance can cause transceiver saturation, resulting in an elevated bit error rate (BER). When using the LX/LH SFP
module with 62.5-micron diameter MMF, you must also install a mode-conditioning patch cord between the SFP module and
the MMF cable on both the sending and receiving ends of the link. Link distances greater than 984 feet (300 m) require the
mode-conditioning patch cord.
SMF; the distance depends on the fiber quality, the number of splices, and the connectors.
Four Twisted-Pair Straight-Through Cable Schematic
Router or PC
1 TP1+
2 TP1-
3 TPO+
6 TPO-
4 TP3+
5 TP3-
7 TP2+
8 TP2-
Four Twisted-Pair Crossover Cable Schematic
Switch
1 TP0+
2 TP0-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
Appendix B
Core Size
Fiber Type (micron)
SMF G.652
Connector and Cable Specifications
Modal
Bandwidth
(MHz/km) Cable Distance
— 43.4 to 62 miles (70
to 100 km)
OL-17784-01