Cabletron Systems MRXI-22 User Manual - 3.5.3

INSTALLATION

3-10

d. Check that the twisted pair connection meets dB loss and cable 

specifications outlined in 10BASE-T Twisted Pair Network 

Requirements.

e.

Check that the cross-over switch is in the correct position. 

Figure 3-11

Cable Pin-outs - EPIM-T RJ-45 Port

If a link still has not been established, contact Cabletron Systems 

Technical Support.

3.5.3

Connecting an AUI Cable to an EPIM-X

To connect an EPIM-X to an external network device, attach an AUI 

cable, no longer than 50 meters in length, to the port located on the 

EPIM-X. See Figure 3-12. You must also set the SQE switch to off.

CAUTION: Ensure that the external transceiver to which the MRXI will be 

connected does not have the signal quality error (SQE or “heartbeat”) test 

function enabled. The MRXI will not operate if the transceiver has the 

SQE test function enabled, and the network will be unusable. Refer to the 

applicable transceiver manual.

1

2

3

6

1

2

3

6

RJ-45 to RJ-45

EPIM-T

  Port

10BASE-T Device

           Port

RX+

RX-

TX+

TX-

TX+

TX-

RX+

RX-

NOTE:

RX+/RX- and TX+/TX- 

must share a common

color pair.