GarrettCom 1008, 1016, 1024 manual Magnum 1000 Workgroup Hubs, Installation and User Guide 04/02

Magnum 1000 Workgroup Hubs Installation and User Guide (04/02)

2.Wipe clean the ends of the dual connectors with a soft cloth or lint-free lens tissue dampened in alcohol. Make certain the connectors are clean before connecting.

Note:	One strand of the duplex fiber optic cable is coded using color bands
	at regular intervals; you must use the color-coded strand on the
	associated ports at each end of the fiber optic segment.

3.Connect the Transmit (TX) port (light colored post) on the Magnum PM-FST to the Receive (RX) port of the remote device. Begin with the color-coded strand of the cable for this first TX-to-RX connection.

4.Connect the Receive (RX) port (dark colored post) on the PM-FST to the Transmit (TX) port of the remote device. Use the non-color coded fiber strand for this.

5.The LINK LED on the front of the PM-FST will illuminate when a proper connection has been established at both ends (and when power is ON in the unit). If LINK is not lit after cable connection, the normal cause is improper cable polarity. Swap the fiber cables at the Port Module connector to remedy this situation.

3.3.6Connecting Fiber Optic (SMA-type, "Screw-on")*

The same five-step procedure as for fiber ST-type applies to FOIRL and 10BASE-FL applications using an RPM-SMA card used with SMA-type fiber connectors. Follow the five steps as described in the Section 3.3.5 above.

When connecting fiber media to SMA connectors, do not over-tighten but rather simply "finger tighten" these connections. Do not use a heavy tool (such as a wrench) to tighten the fiber optic connectors as this might cause damage and result in

operating problems. Improper and excessive tightening may impair data transmission.

* The RPM-SMA is only available via special order.

3.3.7Connecting Single-Mode Fiber Optic (SMF)

When using the RPM-SMF, be sure to use single-mode fiber cable. 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). Because of this, single-mode fiber allows full bandwidth at longer distances, and may be used to connect nodes up to 10 Km apart. For operation with standard half-duplex Ethernet, collision domain and / or power budget limitations may apply for distances over 5Km. Check your single-mode configuration with an experienced network designer when you use extended distances.

The same five-step procedure for multi-mode fiber ST-type applies to single- mode fiber connectors. Follow the five steps listed in Section 3.3.5 above.

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