3com 4200G PWR ユーザーズマニュアル
Choosing the Correct Cables
29
CAUTION: If you want to install the Switch using a Category 5E or
Category 6 cable, 3Com recommends that you briefly connect the cable
to a grounded port before connecting network equipment. If you do not,
the cable’s Electrostatic Discharge (ESD) may damage the Switch's port.
Category 6 cable, 3Com recommends that you briefly connect the cable
to a grounded port before connecting network equipment. If you do not,
the cable’s Electrostatic Discharge (ESD) may damage the Switch's port.
You can create a grounded port by connecting all wires at one end of a
UTP cable to an earth ground point, and the other end to a female RJ-45
connector located, for example, on a Switch rack or patch panel. The
RJ-45 connector is now a grounded port.
UTP cable to an earth ground point, and the other end to a female RJ-45
connector located, for example, on a Switch rack or patch panel. The
RJ-45 connector is now a grounded port.
3Com recommends that you use Category 5 twisted pair cable—the
maximum segment length for this type of cable is 100 m (328 ft).
maximum segment length for this type of cable is 100 m (328 ft).
Choosing the Correct
Cables for the
Switch 4200G
All of the ports on the front of the Switch 4200G 28-Port are
100BASE-FX MT-RJ multi-mode ports. The MT-RJ port is a small form
factor fiber-optic port with the transmit and receive fibers in the same
cable. Unlike many fiber-optic systems, only one MT-RJ cable is needed to
connect two MT-RJ ports together.
100BASE-FX MT-RJ multi-mode ports. The MT-RJ port is a small form
factor fiber-optic port with the transmit and receive fibers in the same
cable. Unlike many fiber-optic systems, only one MT-RJ cable is needed to
connect two MT-RJ ports together.
To connect a front panel port to another 100BASE-FX MT-RJ multi-mode
port, or to a patch panel, a single MT-RJ multi-mode pinless jumper cable
is required. Since standard MT-RJ cables are cross-over cables, no
Auto-MDIX sensing is required. The maximum cable length is 2 kilometers
(1.24 miles).
port, or to a patch panel, a single MT-RJ multi-mode pinless jumper cable
is required. Since standard MT-RJ cables are cross-over cables, no
Auto-MDIX sensing is required. The maximum cable length is 2 kilometers
(1.24 miles).
CAUTION: Do not connect pinned MT-RJ connectors into any port on the
Switch 4200G as this may damage the unit. The ports have locator pins
fitted and are designed for standard (pinless) connectors.
Switch 4200G as this may damage the unit. The ports have locator pins
fitted and are designed for standard (pinless) connectors.
To connect a front panel port to a 100BASE-FX single mode port, or to a
port that does not have an MT-RJ connector, an adaptor will be required.
It is not possible to connect a front panel port to a 1000BASE-FX port.
port that does not have an MT-RJ connector, an adaptor will be required.
It is not possible to connect a front panel port to a 1000BASE-FX port.
10014914AA.book Page 29 Friday, July 7, 2006 2:08 PM