CONNECTING THE SEH TO THE NETWORK
SEH USER’S GUIDE 4-3
4.1.2 Connecting a UTP Segment to an EPIM-T
Before connecting a segment to the EPIM-T, check each end of the
segment to determine if the wires are 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 4-2 to properly set
the EPIM-T crossover switch.
Figure 4-2. EPIM-T Crossover Switch
Connect an EPIM-T to a Twisted Pair Segment as follows:
1. Insert the RJ45 connector on the twisted pair segment into the RJ45
port on the EPIM. See Figure 4-2.
2. Check that the EPIM LNK LED is on. If the LED is off, perform each
of the following steps until it is on:
a. Check that the 10BASE-T device at the other end of the twisted
pair segment is powered up.
b. Verify the RJ45 connector’s pinouts.
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
5. NC
6. RX-
7. NC
8. NC
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
5. NC
6. TX-
7. NC
8. NC
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SEH Book Page 3 Tuesday, March 19, 1996 4:12 PM