GarrettCom 1008 Magnum 1000 Workgroup Hubs, Installation and User Guide 04/02, Magnum RPM-SMF

Magnum 1000 Workgroup Hubs	Installation and User Guide (04/02)
2.4.6 RPM-SMF (Single-mode Fiber)
The Magnum RPM-SMF is a single-mode fiber optic module equipped with a

dual ST-type connector. It functions as a full repeater to support single-mode fiber networks. The RPM-SMF supports fiber optic transmission distances of up to 10 Km.

The RPM-SMF includes full	Single-mode
transceiver functionality and does	ST Connectors
not require an external
transceiver device.
This module is	1
	2
equipped with PART, RX, and
	3
LINK LEDs identical to those of

the RPM-FST. To distinguish	1 LINK	2 Partition 3 Receive
the single-mode RPM-SMF from the multi-mode		Magnum RPM-SMF

RPM-FST, the label “Sgl. M.” is at the top of the faceplate of the RPM-SMF. As an additional indicator, a multi-mode TX port emits light (red in color) that is in the visible spectrum and which can be seen by looking into the port with the power on and with no cable connected. The single-mode TX port emits light outside of the visible spectrum and will always look dark to the human eye.

Note: Be sure to use single-mode fiber optic cable with this module (see Section 3.8.9). Single-mode fiber cable has a smaller diameter than multi-mode fiber cable (2/15 - 8/60 microns for single-mode, 50/125 or 62.5/125 microns for multi-mode, where xx/xx are the diameters of the core and the core plus the cladding respectively).

NOTE: The RPM-SMF circuit board contains a six-pins (three positions) jumper, but the jumper is only to be placed across pins 5 & 6 for single-mode. The other jumper positions are not used for single-mode fiber.

JUMPER ACROSS	DISTANCES
SUPPORTED
1 - 2	not used
3 - 4	not used
5 - 6	0 - 10 km

	1	2
	3	4
DEFAULT	5	6
	J1

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