Black Box LPM600A Manual De Usuario
BLACK BOX
®
3 of 3
05/20/2010
#26555
Item
Code
PoE PSE Media Converters,
10BASE-T/100BASE-TX to 100BASE-FX
Multimode
SC
LPM600a
ST
LPM601a
Single-Mode
SC
LPM602a
For copper-side links, you may need…
GigaBase
®
CAT5e 350-MHz Patch Cable, 4-Pair, Straight-Pinned,
PVC, Blue with Snagless Boots, 10-ft. (3-m)
EVNsL81-0010
For help ordering compatible PoE equipment (including PoE hubs, PoE
PD media converters, and PoE compatible access points and other end
devices), contact our FREE Tech Support.
PD media converters, and PoE compatible access points and other end
devices), contact our FREE Tech Support.
LPM600A: front view
T e c h S P e c S
Certification — FCC Part 15, Class A
Flow Control — 802.3x for full duplex, backpressure for half-duplex
Forwarding Rate — 100 Mbps: 148,800 pps; 10 Mbps: 14,880 pps
PoE PSE Power Feeding — Endpoint via twisted-pair Pins 1, 2, 3, 6
Standards — IEEE 802.3u 10/100ASE-TX, 100BASE-FX, IEEE 802.3af
Power over Ethernet
CE Approval — Yes
Connectors — Copper side: (1) RJ-45 (10BASE-T/100BASE-TX);
Fiber side: (1) pair of SC or ST
®
Indicators — LEDs: (1) PWR (+5-V power; PoE feeding power is active);
(1) PoE PSE-TP (disrupted PoE feed power);
(1) TP LNK/ACT (good twisted-pair link/twisted-pair data is present);
(1) 100 (twisted-pair speed is 100 Mbps);
(1) FX LNK/ACT (good fiber link/fiber data is present);
(1) FDX/COL (duplex mode/collision is present);
(1) 4W (PD is Class 1 type);
(1) 7W (PD is Class 2 type);
(1) 15.4W (PD is Class 0 or 3)
Operating Environment — Temperature: 32 to 122ºF (0 to 50ºC);
Humidity: 5 to 90%, noncondensing
Power — Input: 100–240 VAC, 50–60 Hz, autosensing;
Consumption: 24 watts
Size — 1.6"H x 6.25"W x 5.25"D (4.1 x 15.9 x 13.3 cm)
Power over Ethernet (PoE) provides a way for network
devices to be powered by their data cables rather than by
separate power cords. The IEEE 802.3af PoE standard calls for
48 volts of AC power over any grade of UTP wire, including
Category 3, 5, 5e, and 6. The specification covers power
sourcing equipment (PSE) and powered devices (PDs). The
PSE puts power onto the UTP cable, and the PD picks it off.
separate power cords. The IEEE 802.3af PoE standard calls for
48 volts of AC power over any grade of UTP wire, including
Category 3, 5, 5e, and 6. The specification covers power
sourcing equipment (PSE) and powered devices (PDs). The
PSE puts power onto the UTP cable, and the PD picks it off.
How does PoE work? Very simply, Ethernet cable consists
of four twisted pairs of cable: two pairs for data transmission
and two “free” pairs that can be used for other purposes.
802.3af PoE uses either the spare pairs or the data pairs to
transmit power. It adds DC power to the wires using signal
transformers and picks off power at the far end the same way.
and two “free” pairs that can be used for other purposes.
802.3af PoE uses either the spare pairs or the data pairs to
transmit power. It adds DC power to the wires using signal
transformers and picks off power at the far end the same way.
Although sending power over the data pairs rather than
the spare pairs would seem to be counterintuitive, data and
power transmissions don’t interfere with each other because
they’re at opposite ends of the frequency spectrum.
Specifically, electricity has a low frequency of 60 Hz or less,
and data transmissions have frequencies that can range from
10 million to 100 million Hz.
power transmissions don’t interfere with each other because
they’re at opposite ends of the frequency spectrum.
Specifically, electricity has a low frequency of 60 Hz or less,
and data transmissions have frequencies that can range from
10 million to 100 million Hz.
The 802.3af standard calls for the maximum power
available to any powered device to be 12.95 watts with a
voltage range of 36 VDC to 57 VDC. This is more than enough
to power typical PoE devices, such as wireless access points.
voltage range of 36 VDC to 57 VDC. This is more than enough
to power typical PoE devices, such as wireless access points.
technically speaking
LPM600A: rear view
Rear-panel DIP switches enable you to configure the converter
quickly so you’re up and running in a matter of minutes. Simply
ensure that connected nodes are set to operate in flow control
mode identical to that of the media converter. No further intervention
is required.
ensure that connected nodes are set to operate in flow control
mode identical to that of the media converter. No further intervention
is required.
And though it’s designed to work as a PoE PD, the PoE converter
doesn‘t have to be used this way. It also works as a pure converter.
It’s even ideal for temporary setups where you need to convert copper
twisted-pair interfaces to fiber media, and vice versa.
It’s even ideal for temporary setups where you need to convert copper
twisted-pair interfaces to fiber media, and vice versa.