GarrettCom Quad manual Fiber ports, internal jumper settings

Magnum Quad-Series Fiber Switches Installation and User Guide (06/03)

See Section 4.4 for additional information on auto-negotiation functionality.

3.5Fiber 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

Jumper Settings for 10 or 100Mbps Fiber Half or Full Duplex

Jumper	Port	Function	Factory Settings	Speed
JP1-2, 6-7, 9-10	Pin 1-2, 6-7, 9-10	FDX @100 config	YES	100 Mb
JP1-2, 7-8, 11-12	Pin 1-2, 7-8, 11-12	HDX@100config	NO	100 Mb

1

Factory Settings 100Mbps Full 100Mbps Half

J1 Duplex J1 Duplex

100 Mb

1 2 3 4

1 2 3 4

100 Mb

9	10	11 12
J1
5	6	7	8
1	2	3	4		Jumper Settings for HDX/FDX
			J1	J2	J3	J4	Bottom QPM Retaining
Printed Circuit card							Two(50) Pin
			TOP				QPM Connectors
							(inserts into main board )

1

2

LED

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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