Cabletron Systems TPXMIM-20 Installation Manual

Also see for TPXMIM-20: Addendum manual

Cabletron Systems TPXMIM-20 Installation Manual Manual pdf 24 page image

TRANSCEIVER REQUIREMENTSTPXMIM Installation GuidePage 17• Length - If you meet all system budgets, the maximum single modefiber optic cable length can reach 5 km (3.1 miles) with bridges ateach segment end. However, IEEE 802.3 FOIRL specificationsspecify a maximum of 1 km (1093.6 yards).2.3.4 Thin-net NetworkWhen connecting a thin-net (coaxial) segment to your hub (using anEPIM-C), ensure your network meets the following requirements:• Cable Type - Use only 50 ohm RG-58A/U type coaxial cable forthin-net cable segments.• Length - The thin-net segment must not exceed 185 meters.• Terminators - Terminate each end of a thin-net segment.• Connectors - You can use up to 29 tee-connectors throughout thelength of the cable segment for host connections.If you use an excessive number of barrel connectors within the cablesegment (e.g., finished wall plates with BNC feed-throughs), youmay need to reduce the number of host connections. For specialnetwork design, contact Cabletron Systems Technical Support.• Grounding - For safety, ground only one end of a thin-net segment.Do NOT connect EPIM BNC ports to earth ground.Warning: Connecting a thin-net segment to earth ground at morethan one point could produce dangerous ground currents.2.4 TRANSCEIVER REQUIREMENTSWhen you connect an external network segment to an EPIM-A in yourhub through a transceiver, that transceiver must meet IEEE 802.3standards or Ethernet version 1.0 or 2.0 requirements. The transceivermust also have Signal Quality Error (SQE) disabled.