POEGEM12T2SFP User Manual
11
Alloy Computer Products Pty Ltd Copyright ©2006
2.1.2. Cabling Requirements
To help ensure a successful installation and keep network performance at optimum levels, take
care to use Cat.5e grade or higher cabling. Ensure that stranded core UTP cable, if used, runs
for no more than 10 metres, and that solid core runs for a maximum of 100 metres. Poor cabling
is the most common cause for network dropouts or poor performance.
2.1.2.1. Cabling Requirements for UTP Ports
• For Ethernet copper network connections, the UTP cable used must be Cat. 3 grade as a
minimum, with a maximum length of 100 metres
• For Fast Ethernet copper network connections, the UTP cable used must be Cat. 5 grade as a
minimum, with a maximum length of 100 metres
• For Gigabit Ethernet copper network connection, UTP cable used must be Cat.5 grade or
higher, with a maximum length of 100 metres. Cat.5e grade UTP cable is recommended.
2.1.2.2. Cabling Requirements for 1000SX/LX/ZX SFP Modules
There are two categories of fibre optic modules - multimode (MM) and single-mode (SM). The
later is categorised into several classes by the distance it supports. These are SX, LX, LHX, ZX
and EZX. The majority of mini-GBIC modules available use a LC type connector. The connector
types used currently on Alloy mini-GBIC modules are LC and WDM SC, for the following module
types:
• Gigabit Fibre with multimode LC SFP mini-GBIC modules
• Gigabit Fibre with single-mode LC mini-GBIC modules
• Gigabit Fibre with single-mode/single core WDM SC 1310nm SFP mini-GBIC modules
• Gigabit Fibre with single-mode/single core WDM SC 1550nm SFP mini-GBIC modules
The following table lists the types of fibre optic cable that are supported by SFP mini-GBIC
modules installed in the POEGEM12T2SFP. Other cable types not listed here may be supported;
please contact the supplier of your switch for details.
Multimode Fibre Cable and Modal Bandwidth
Multimode 62.5/125μm Multimode 50/125μm
Modal
Bandwidth Range Modal
Bandwidth Range
160MHz-Km 220m 400MHz-Km 500m
IEEE 802.3z
Gigabit Ethernet
1000SX 850nm
200MHz-Km 275m 500MHz-Km 550m
Single-mode Fibre 9/125μm
Single-mode transceiver 1310nm 10Km, 40Km
1000Base-
LX/LHX/XD/ZX
Single-mode transceiver 1550nm 40Km, 70Km, 100Km
TX(Transmit) 1310nm
Single-mode
*20Km RX(Receive) 1550nm
TX(Transmit) 1550nm
1000Base-LX
Single Fibre
(WDM SC) Single-mode
*20Km RX(Receive) 1310nm