Cisco 2975 - Manual (Page 50)

B-4
Catalyst 2975 Switch Hardware Installation Guide
OL-17784-01
Appendix B Connector and Cable Specifications
Cables and Adapters
Cable Pinouts
Figure B-5 Four Twisted-Pair Straight-Through Cable Schematic
Figure B-6 Four Twisted-Pair Crossover Cable Schematic
CWDM 1470, 1510,
1530, 1550,
1570, 1590,
1610 SMF G.652 — 43.4 to 62 miles (70
to 100 km)
1. Requires a mode-conditioning patch cord. An ordinary patch cord with MMF, 1000BASE-LX/LH SFP modules, and a short
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.
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
SMF; the distance depends on the fiber quality, the number of splices, and the connectors.
Table B-1 Fiber-Optic SFP Module Port Cabling Specifications (continued)
SFP Module
Wavelength
(nanometers)
Fiber Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km)
Cable Distance
1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP1+
Switch Router or PC
2 TP1-
3 TPO+
6 TPO-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP3+
5 TP3-
7 TP2+
8 TP2- 65272
1 TPO+
2 TPO-
3 TP1+
6 TP1-
1 TP0+
Switch Switch
2 TP0-
3 TP1+
6 TP1-
4 TP2+
5 TP2-
7 TP3+
8 TP3-
4 TP2+
5 TP2-
7 TP3+
8 TP3- 65274