Cabletron Systems SEH-34 - Manual (Page 18)

INSTALLATION REQUIREMENTS/SPECIFICATIONS
Page 2-6
2.1.5 Thin-net Network Requirements for the EPIM-C Module
When you connect a thin-net segment to the SEH (via an EPIM-C),
your network must meet the following requirements:
Cable Type
50 ohm RG-58A/U type coaxial cable must be used when making up a
thin-net cable segment.
Length
The thin-net segment must be no longer than 185 meters.
Terminators
A 50 ohm terminator must be connected to the far end of each
thin-net segment.
Connectors
A maximum of 29 tee-connectors may be used throughout the length
of cable segment for host connections. If an excessive number of barrel
connectors are used within the cable segment, such as finished wall
plates with BNC feed-throughs, then a reduced number of host
connections may be required. For special network 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 more than
one point could produce dangerous ground currents.