User`s guide

INSTALLATION REQUIREMENTS/SPECIFICATIONS
2-12
Ethernet Port - EPIM-C (BNC Port)
Internal
Transceiver: Cabletron Systems TMS-3™ Transceiver.
Termination: The port on the module can be internally
terminated, to an internal 50 Ohm terminator,
utilizing the switch located to the left of the
port. This eliminates the need to connect the
port to a Tee Connector and terminator.
Type: BNC receptacle, with gold center contact, for
use with BNC type tee-connectors and RG-58
thin-net cable.
Grounding: 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 cause dangerous
ground currents.
The BNC port of the Coaxial Interface
Modules is not connected to earth ground.
Ethernet Port - EPIM-A and EPIM-X (AUI Port)
Interface DB-15 Port (male connector for EPIM-A,
Connector: female connector for EPIM-X)
Type: 15 position D type receptacle
Pin 1 Logic Ref. 9 Collision -
2 Collision + 10 Transmit -
3 Transmit 11 Logic Ref.
4 Logic Ref. 12 Receive -
5 Receive + 13 Power (+12Vdc)
6 Power Return 14 Logic Ref.
7 No Connection 15 No Connection
Connector Shell: Protective Ground