Media Dependent Adapters

The RJ-45 ports are configured as media-dependent interface-crossover (MDI-X) connectors. These ports connect over straight cables to the network interface controller (NIC) card in a node or server, similar to a conventional Ethernet repeater hub. If you are connecting to another Ethernet hub or Ethernet switch, you need a crossover cable unless an MDI connection exists on the associated port of the attached device.

The 400-4TX MDA can operate at either 10 Mb/s or 100 Mb/s. The speed is determined through autonegotiation with its connecting device.

For installation instructions, see “ Installing an MDA” on page B-11.

100BASE-FX MDAs

There are two 100BASE-FX models:

400-2FX MDA

The 400-2FX MDA uses two longwave 1300 nm SC connectors to attach devices over 62.5/125 micron multimode fiber optic cable.

400-4FX MDA

The 400-4FX MDA uses four longwave 1300 nm MT-RJ connectors to attach devices over 62.5/125 micron multimode fiber optic cable.

Both models (see Figure B-2) can be used to attach fiber-based 100 Mb/s connections to other compatible Fast Ethernet devices.

Single-mode fiber cable is not supported.

Warning: Fiber optic equipment can emit laser or infrared light that can injure your eyes. Never look into an optical fiber or connector port. Always assume that fiber optic cables are connected to a light source.

Vorsicht: Glasfaserkomponenten können Laserlicht bzw. Infrarotlicht abstrahlen, wodurch Ihre Augen geschädigt werden können. Schauen Sie niemals in einen Glasfaser-LWL oder ein Anschlußteil. Gehen Sie stets davon aus, daß das Glasfaserkabel an eine Lichtquelle angeschlossen ist.

304376-B Rev 00

B-3

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Nortel Networks 350 manual 100BASE-FX MDAs