Net2Edge Liberator 44 Series - SMB (Sub Miniature Version B) Cables; Table 10: Fiber Cable Descriptions

LIB-4400/4424 Installation Guide
| MANUAL Page 55 of 65
Fibre (10GbE) Cabling
The two general types of fiber optic cables are SMF (single-mode fiber) andMMF (multi-mode fiber).
SMF has an optical core of approximately 9 μm (microns), and has lower modal dispersion than MMF,
and can support distances of at least 10 Km and as high as 80-100 Km (Kilometers) or more, depending
on transmission speed, transceivers, etc..
MMF has an optical core of either 50 μm or 62.5 μm, and it supports distances up to 600 meters,
depending on transmission speeds and transceivers.
Table 10: Fiber Cable Descriptions
Standard
Cable Type
Core
Diameter
IEEE Standard
Distance
Wavelength
OM1
Multi-mode (MMF)
62.5/125 μm
33 meters (SR)
850 / 1300 nm
OM2
Multi-mode (MMF)
50/125 μm
82 meters (SR)
850 / 1300 nm
OM3
Multi-mode (MMF)
50/125 μm
300 meters (SR)
850 / 1300 nm
OM4
Multi-mode (MMF)
50/125 μm
550 meters (SR)
850 / 1300 nm
OS1
Single mode (SMF)
9 μm
up to 10,000m
1310 / 1550 nm
OS1 SMF optics are used for distances up to 10,000m (6.2 miles) with standard transceivers and can
work at longer distances with special transceivers and switching infrastructure.
SMB (Sub Miniature version B) Cables
There are several differences between 50 and 75 ohm SMB cables. The ohms refer to the impedance or
electrical resistance of the cable type.
Typically, 50 ohm cables are used to transmit information
(data) from one piece of equipment to another or, quite often,
to an antenna. GPS, Wi-Fi, satellite radio, RFID and other
applications use 50 ohm cables.
Generally, 75 ohm cables are used to transmit video signals.
Only about 10% of our customers use 75 ohm cables.
Chances are if you need 75 ohm cables you will know it but
please e-mail or call first if you are unsure.
The 50 ohm low loss cables are older style RG174, RG58, RG8/X and RG8 cables. The available
diameters include approx. 1/10
th
of an inch thick to approx. 4/10
th
of an inch thick. The thicker the cable,
the lower the data loss per foot, but the thicker the cable, the harder it is to bend and the more weight it
puts on connections.
RG174 types have approx. 1/10
th
inch diameter and are suited for 1-10 ft. applications.
RG58 types have approx. 2/10
th
inch diameter, most suitable for 10-25 ft .applications.
RG8X types are approx. 1/4 inch thick, most suitable for 20-40 ft. applications.
RG8 types are approx. 4/10ths of an inch thick and are mainly used for 50+ ft. applications.
Note that the LIB-4xxx ships with SMB connectors.