Alloy 16-PORT GIGABIT WEB SMART SWITCH GSS-16T2SFP, Руководство пользователя

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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 100metres.
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 cable - multimode (MM) and singlemode (SM). The
later is categorized 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 singlemode LC mini-GBIC modules
•
Gigabit Fibre with singlemode/single core WDM SC 1310nm SFP mini-GBIC modules
•
Gigabit Fibre with singlemode/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 Alloy 16/24 Port Gigabit Switches. 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 62.5/125
μ
m Multimode 50/125
μ
m
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
Singlemode Fibre 9/125
μ
m
Singlemode transceiver 1310nm 10Km, 40Km
1000Base-
LX/LHX/XD/ZX
Singlemode transceiver 1550nm 40Km, 70Km, 100Km
TX(Transmit) 1310nm
Singlemode
*20Km
RX(Receive) 1550nm
TX(Transmit) 1550nm
1000Base-LX
Single Fibre
(WDM SC)
Singlemode
*20Km
RX(Receive) 1310nm
Cont.