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Figure 1 100BASE-FX Distance Extender Module
Important Safety Information
WARNING: Installation and removal of the
Module must be carried out by qualified
personnel only. Before installing the Module
into a hub, you must first disconnect the hub
from the mains power supply. For full safety
instructions, refer to the user guide that
accompanies the hub.
WARNING: Fiber Optic ports – Optical Safety
Never look at the transmit
LED/laser through a
magnifying device while it is
powered on. Never look
directly at the fiber TX port
and fiber cable ends when
they are powered on.
L'information de Sécurité Importante
AVERTISSEMENT: Confiez l'installation et la
dépose de ce module à un personnel qualifié.
Avant d'installer ce module dans un groupe,
vous devez au préalable débrancher ce groupe
de l'alimentation secteur. Pour prendre
connaissance des consignes complètes de
sécurité, consultez le guide utilisateur qui
.
accompagne ce groupe
AVERTISSEMENT: Ports pour fibres optiques
– sécurité sur le plan optique.
Ne regardez jamais le voyant
(DEL) d'émission/le laser en
utilisant un dispositif
d'agrandissement, tant qu'il
est sous tension. Ne regardez
jamais directement le port TX
(Transmission) à fibres
optiques et les embouts de
câbles à fibres optiques tant
qu'ils sont sous tension.
Wichtige Sicherheitsinformationen
WARNUNG: Die Installation und der Ausbau
des Moduls darf nur durch Fachpersonal
erfolgen. Vor dem Installieren des Moduls in
einem Gerät muß zuerst der Netzstecker des
Geräts abgezogen werden. Vollständige
Sicherheitsanweisungen sind dem
Benutzerhandbuch des Geräts zu entnehmen.
WARNUNG: Faseroptikanschlüsse –
Optische Sicherheit.
Niemals mit einem
Vergrößerungsgerät ein
Übertragungs-LED/Laser
betrachten, während dieses
eingeschaltet ist. Niemals
direkt auf den
Faser-TX-Anschluß und auf
die Faserkabelenden schauen,
während diese eingeschaltet
sind.
Installing the Module into a Hub
CAUTION: Do not install the Module in
unsuitable hubs such as those in the Hub 10,
PS Hub, and Hub 100 ranges. Contact your
supplier for advice if necessary.
1 Ensure that the hub is disconnected from the
mains power supply, and you are wearing an
anti-static wristband connected to a suitable
earth point.
2 With the hub on a flat surface, remove the
screws of one blanking plate from the rear of
the hub. Do not remove any other screws
from the rear of the hub.
3 Keep the blanking plate in a safe place. If you
remove the Module, you must replace the
blanking plate to prevent dust and debris
entering the hub and maintain cooling air
circulation.
4 Hold the Module so that the text on the front
panel is upright, and slide it into the hub,
ensuring the edge connector is fully engaged.
The front panel of the Module should lie flush
against the rear panel of the hub. Fix the front
panel of the Module to the hub using the two
screws from the blanking plate.
5 Power up the hub.
6 Check the LEDs on the hub to ensure that the
Module is operating correctly.
Connecting the Module
1 Remove the protective plastic cover from the
fiber connector on the Module. Keep the cover
and refit it if you unplug the fiber cable from the
Module.
2 Plug the SC connector on the fiber cable into
the fiber socket on the Module.
3 Connect the other end of the fiber optic
segment to an appropriate device with a
100Mbps Fast Ethernet fiber interface.
The fiber optic segment can be used up to 2Km
(6600ft) in length when using full duplex
operation. In half duplex (factory setting) mode,
this distance is reduced to 412m (1350ft).
LEDs
LEDs on the front of the hub indicate the Module
status. Refer to the user guide that accompanies
the Dual Speed Hub 500 unit for a description of
the LED behavior.
.
Connections from Distance Extender in one stack to Distance Extender in next stack (or to
fiber port in any Fast Ethernet device).
Figure 2 Chaining Dual Speed Hub 500 units with 100BASE-FX Distance Extender Modules
Duplex Switch
The choice of duplex mode is made with the slide
switch on the front of the module. Ensure that
the switch is set to the mode you require before
connecting any cables. Make sure also that the
other device supports the chosen mode.
When connecting this module to a server, we
suggest you use half duplex mode.
Using the Distance Extender
The Distance Extender will connect to any Fast
Ethernet device with a fiber port. If that device
supports full duplex operation, the links may be
up to 2Km. If not, the distance is 412m.
You can connect two or more Dual Speed Hub
500 units using a Distance Extender at each end
of the link to form chains of units or stacks. At
full duplex, this gives 2Km for each link. Figure 2
shows the process of chain building.
You may install Distance Extender Modules in
any combination of transceiver slots within a Dual
Speed Hub 500 stack.
Take care not to create loops in the network.
Problem Solving
If you suspect a problem, carry out the following
checks before contacting your supplier:
Ensure the hub in which the Module is fitted is
powered up.
Ensure the Module is correctly installed.
Ensure that the device at the far end of the
segment is powered up and operating correctly.
Try reversing the Tx and Rx connections.
Check that all connectors on the fiber optic
segment are correctly engaged.
Clean the terminators by wiping them gently
with a clean tissue or cotton bud moistened with
a little ethanol. Dirty fiber terminators on the
fiber optic segment will impair the quality of the
light transmitted through the cable.
Check that the duplex setting at both ends of
the link is at the same level.
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