GarrettCom Quad Manual De Usuario
Magnum Quad-Series Fiber Switches
Installation and User Guide (06/03)
See Section 4.4 for additional information on auto-negotiation functionality.
3.5 Fiber 100Mb ports, internal jumper settings for 100Mb fixed Half- or
Full-Duplex, per port
The factory (default) setting is for full-duplex on all fiber 100Mbps ports, which is
generally popular. FDX works well under most circumstances, but cannot always be
depended upon to work as expected. If full-duplex on 100Mbps will not function
properly in your setup, internal jumpers allow the mode of the Q-Series fiber
2
3
3
1
4
1
100 Mb
J4
Bottom QPM Retaining
Jumper Settings for HDX/FDX
Two(50) Pin
QPM Connectors
(inserts into main board
)
TOP
Printed Circuit card
LED
100 Mb
ettings
100Mbps Full
Duplex
100Mbps Half
Duplex
Factory S
Jumper Settings for 10 or 100Mbps Fiber Half or Full Duplex
Jumper
Port
JP1-2, 6-7, 9-10
Function
Factory Settings
Speed
FDX @100 config
100 Mb
Pin 1-2, 6-7, 9-10
HDX@100config
NO
YES
11-12
100 Mb
JP1-2, 7-8, 11-12
Pin 1-2, 7-8,
J1
5 6 7 8
9 10 11 12
1 2
3
J1
1 2
3
J1
4
4
J1 J2 J3
1 2 3 4
Figure 3.5. Fiber ports, internal jumper settings.
Note: Be certain that the main power is disconnected before opening the unit or
changing any internal jumper setting
quad-ports to be fixed, even if the attached device may or may not support full-duplex.
This is desirable when there are unknown devices presently or potentially connected,
which will not operate correctly with full-duplex. Examples include hubs that support
only half-duplex by default.
Therefore, the default setting of full-duplex (fiber ports) is generally desirable
because it is widely used and allows for the connection of various devices without re-
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