INSTALLATION
CHAPTER 2
INSTALLATION
2.1INTRODUCTION
The Cabletron Systems THN-MIM is designed for quick and easy installation into an MMAC. No special skills or tools are required to install this module.
2.2NETWORK DESIGN GUIDELINES
The following network design guidelines must be followed when connecting segments to the THN-MIM. If not, unsatisfactory network performance may result.
2.2.1Thin-net Segments
This applies to the THN-MIM only. For the THN-MIM7593, see section 2.2.2.
•50 ohm RG-58A/U type coaxial cable must be used when making up a thin-net cable segment. A 50 ohm terminator must be connected to the far end of the thin-net segment.
•A maximum of 30 connections may be made to a thin-net cable segment. These connections must be at least 0.5 meter apart.
•For safety, only one end of a thin-net segment should be connected to earth ground. Connection to earth ground at more than one point on the segment may allow for the occurrence of dangerous ground currents. The BNC ports of the THN-MIM are connected to earth ground. This eliminates the need of grounding the thin-net segments connected to the module.
•Connections on a thin-net cable segment to host systems or transceivers are made by BNC tee connectors. The male end of the BNC tee connector is used to connect directly to the host or to the transceiver. The female ends of the tee connector must be connected to another part of the segment or to a terminator.
