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A-4
Cisco Connected Grid Ethernet Switch Module Interface Card Getting Started Guide
OL-23421-02
Appendix A Cable and Connectors
Cables and Adapters
Note When the fiber-optic cable span is less than 15.43 miles (25 km), insert a 5-decibel (dB) or 10-dB inline
optical attenuator between the fiber-optic cable plant and the receiving port on the 1000BASE-ZX SFP
module.
Cable Pinouts
Figure A-4 Two Twisted-Pair Straight-Through Cable Schematic for 10/100 Ports
Figure A-5 Two Twisted-Pair Crossover Cable Schematic for 10/100 Ports
100BASE-ZX
(SFP-GE-Z)
1550 SMF
SMF
9/10
8
— 43.5 miles (70 km)
62 miles (100 km)
100BASE-EX
(GLC-EX-SMD)
1310 SMF G.652 — 24.9 miles (40 km)
2
1. Modal bandwidth applies only to multimode fiber.
2. 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.
3. A mode-field diameter/cladding diameter = 9 micrometers/125 micrometers.
Table A-1 Fiber-Optic SFP Module Port Cabling Specifications (continued)
Type of SFP Module
Wavelength
(nanometers) Fiber Type
Core
Size/Cladding
Size (micron)
Modal
Bandwidth
(MHz/km)
1
Cable Distance
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
H5578
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
3 TD+
6 TD–
1 RD+
2 RD–
H5579