Cabletron Systems 9E138-36b - Manual (Page 36)

EPIMs
A-6
The AUI Cable must not exceed 50 meters in length. If 28 AWG thin office drop
AUI cable is used, then the maximum cable length is limited to 15.24 meters.
Figure A-5. The EPIM-A and EPIM-X
Table A-4 lists the DB-15 pinouts.
Table A-4. DB-15 Pinouts
Pin Number Represents Pin Number Represents
1 Logic Ref. 10 Transmit -
2 Collision + 11 Logic Ref.
3 Transmit 12 Receive -
4 Logic Ref. 13 Power (+12Vdc)
5 Receive 14 Logic Ref.
6 Power Return 15 No Connection
7 No Connection Connector Shell Positive Ground
9 Collision -
EPIM-A
PWR SQE
EPIM-X