INTRODUCTION

NOTE: Cabletron Systems reserves the right to change these specifications at any time without notice.

BNC INTERFACE (Ports 1-12)

Type:

BNC receptacle, with gold center contact,

 

for use with BNC type plugs and RG-58

 

thin-net cable.

Internal Transceiver:

Cabletron Systems TMS-3 Transceiver.

 

For further information, refer to the

 

TMS-3 Transceiver User's Manual.

Terminations:

Each segment is internally connected to a

 

50 ohm terminator in the port.

Grounding:

Each segment connector shield is

 

internally connected to earth ground by the

 

THN-MIM. This eliminates the need for

 

grounding the segments connected to the

 

BNC ports.

INDICATORS

 

POK

Indicates that the port is connected to the

 

network.

 

When the module is first installed into the

 

MMAC, the LED will not be lit until the

 

first data packet passes through the port.

RCV

Indicates that the module is receiving a

 

data packet from that segment.

ENVIRONMENTAL REQUIREMENTS

 

 

Operating temperature:

+5 to +40 C

Non-operating temperature: -30 to +80 C

Operating humidity:

5 to 95% (non-condensing)

Page 1-3

Page 8
Image 8
Cabletron Systems THN-MIM manual BNC Interface Ports, Indicators POK, Rcv, Environmental Requirements