Connecting An Unshielded Twisted Pair Segment To An Epim-T - Cabletron Systems ETWMIM User Manual

EPIM SPECIFICATIONS
6. If the PWR LED is on with the AUI cable disconnected, continue
with the following checks:
a. Check the AUI connections for proper pinouts. The pinouts for
the transceiver connection are listed in this appendix.
b. Check the cable for continuity.
c. Reconnect the AUI cable to the ETWMIM and the device.
If the LED is still not on after reconnecting the segment, contact
Cabletron Systems Technical Support.
A.3.2 Connecting an Unshielded Twisted Pair Segment to an
EPIM-T
Before connecting a segment to the EPIM-T, check each end of the
segment to determine if the wires have been crossed-over for the
proper connection. If the wires do not cross over, use the switch on the
EPIM-T to internally cross over the RJ45 port. Refer to Figure A-7 to
properly set the EPIM-T crossover switch.
Position X
(crossed over)
1. RX+ 5. NC
2. RX- 6. TX-
3. TX+ 7. NC
4. NC 8. NC
Page A-14
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
Figure A-7. EPIM-T Crossover Switch
5. NC
6. RX-
7. NC
8. NC