B.6 epim-a and epim-x – Cabletron Systems NBR-420 User Manual
Page 62
Appendix B: EPIM Specifications
Page B-6
NBR-SERIES Installation Guide
B.6 EPIM-A AND EPIM-X
The EPIM-A is a DB15 female connector used to attach segments to an
external transceiver. The EPIM-X is equipped with dual internal
transceivers. It has a DB15 male connector used to attach segments to an
AUI cable. Figure B-5 shows both modules.
Figure B-5
EPIM-A and EPIM-X, AUI Port
Table B-1
DB15 Pinouts
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
8
Logic Ref.
Connector Shell:
Protective Ground
1092_25