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Pure Networking 100BASE-T Media Converters
Match cable types simply and affordably!
LH1701A-SC-UK
• Feature MDI/MDI-X crossover for
configuring the RJ-45 port.
• Link 1000BASE-T UTP Ethernet lines
quickly and easily to 1000BASE-SX
multimode or 1000BASE-LX single-mode
fibre.
• Comply with the IEEE 802.3z
1000BASE-SX/LX standard.
• Compatible with other Gigabit
1000BASE-T/SX/LX devices.
Item
Code
Price
Pure Networking
™
10BASE-T/100BASE-TX Media Converters
to 100BASE-FX Multimode, 1310-nm, 2
km, ST
LH1706A-ST-UK
£64.88
to 100BASE-FX Multimode, 1310-nm, 2
km, SC
LH1706A-SC-UK
£64.88
to 100BASE-FX Single-Mode, 1310-nm, 15
km, SC
LH1707A-SC-UK
£116.80
to 100BASE-FX Single-Mode, 1310-nm, 30
km, SC
LH1708A-SC-UK
£133.02
*All include (1) media converter, mounting screws, rubber feet and (1) power supply
Pure Networking 100BASE-TX Media Converters
to 100BASE-FX Multimode, 1310-nm, 2
km, ST
LH1700A-ST-UK
£64.88
to 100BASE-FX Multimode, 1310-nm, 2
km, SC
LH1700A-SC-UK
£64.88
to 100BASE-FX Single-Mode, 1310-nm, 15
km, SC
LH1701A-SC-UK
£116.80
to 100BASE-FX Single-Mode, 1310-nm, 30
km, SC
LH1702A-SC-UK
£128.02
* All include (1) media converter, mounting screws, rubber feet and (1) power supply
Pure Networking WDM (Single-Strand) Media Converters
100BASE-TX to 100BASE-FX Single-Mode (
must be used in complementary pairs
)
1310-nm TX/1550-nm RX, 20
km, SC
LH1710A-SCRS-UK
£246.58
1550-nm TX/1310-nm RX, 20
km, SC
LH1709A-SCTS-UK
£246.58
1310-nm TX/1550-nm RX, 40
km, SC
LH1712A-SCRS-UK
£399.07
1550-nm TX/1310-nm RX, 40
km, SC
LH1711A-SCTS-UK
£399.07
t E c h s p E c s
Operation
— Half- or Full-duplex
Standards
— IEEE 802.3u
Connectors
—
LH1706A-ST-UK, LH1700A-ST-UK:
(1) RJ-45, (1) pair of ST;
LH1706A-SC-UK — LH1708A-SC-UK,
LH1700A-SC-UK — LH1702A-SC-UK:
(1) RJ-45,
(1) pair of SC;
LH1709A-SCTS-UK, LH1710A-SCRS-UK,
LH1711A-SCTS-UK, LH1712A-SCRS-UK:
(1) RJ-45, (1) SC
Indicators
— LEDs:
LH1706A-ST-UK,
LH1706A-SC-UK, LH1707A-SC-UK,
LH1708A-SC-UK:
(2) Link/Activity,
(2) Full-Duplex/Collision, (1) 100, (1) Power
LH1700A-ST-UK, LH1700A-SC-UK,
LH1701A-SC-UK, LH1702A-SC-UK:
(2) Link,
(2) Receive, (1) Full-Duplex, (1) Power;
LH1709A-SCTS-UK, LH1710A-SCRS-UK,
LH1711A-SCTS-UK, LH1712A-SCRS-UK:
(2) Link/Activity, (2) Full-Duplex/Collision,
(1) Full-Duplex, (1) Power
Power
— 120-VAC, 60-Hz power supply (included)
Dimensions
— 2.3(H) x 7.4(W) x 12.7(D) cm
Weight
— 0.1 kg
Media Converters
Standalone
100Mbps
Traditional fibre optic media converters perform a useful
function but don't really reduce the amount of cable needed to
send data on a fibre segment. They still require two strands of
glass to send transmit and receive signals for fibre media
communications. Wouldn't it be better to combine these two
logical communication paths within one strand?
That's exactly what single-strand fibre conversion does. It
compresses the transmit and receive wavelengths into one
single-mode fibre strand.
The conversion is done with Wavelength Division Multiplexing
(WDM) technology. WDM technology increases the information-
carrying capacity of optical fibre by transmitting two or more
signals simultaneously at different wavelengths on the same fibre.
The way it usually works is that one unit transmits at 1550 nm and
receives at 1310 nm. The other unit transmits at 1310 nm and
receives at 1550 nm. The two wavelengths operate independently
and don't interfere with each other. Wavelength-sensitive filters
are used at the receiving end to separate the wavelengths.
This bidirectional traffic flow effectively converts a single fibre
into a pair of "virtual fibres", each driven independently at
different wavelengths.
WDM on single-strand fibre is most often used for point-to-
point links on a long-distance network. It's also used to increase
network capacity or relieve network congestion.
Although the WDM used in media converters typically offers
two channels on single-strand fibre at 10, 100- or 1000-Mbps
speeds, WDM is rapidly evolving technology that's increasing the
capacity of fibre infrastructure by leaps and bounds.
Coarse wavelength-division multiplexing (CWDM) use
wavelengths between 1310 nm and 1610 nm and usually
multiplexes signals across eight channels, although some versions
support up to 16 channels. The relatively new 10GBASE-LX4
Ethernet standard achieves its 10-Gigabit speeds by using CWDM
to divide the data stream into four separate 3.125-Gbps channels
for transmission over fibre cable.
Dense wavelength-division multiplexing (DWDM) uses the
1550 nm band and increases channel density even more. It can
achieve as many as 64 channels on a single fibre strand. With
DWDM it's possible to achieve speeds of hundreds of Gbps across
a single fibre. Its ability to handle vast amounts of traffic — even
different kinds of traffic moving at different speeds — makes
DWDM the technology of choice for metropolitan area networks.
Companies that offer TV, Internet and phone service on fibre use
this technology.
Black Box Explains
Single-strand fibre WDM.