Digital Equipment MM-10 Series Installing And Cabling

Installing and Cabling the 10BaseT MM-10 (DLXUT)

Introduction

The 10BaseT MM-10 is part of the MM-10 product family (which also includes the 10BaseFL, 10Base2, AUI, and
Reverse AUI). It provides connectivity between a host module such as the DIGITAL MultiSwitch Hub 624T and
network devices using 10BaseT. It has a crossover wired, 8-pin MJ port connector (labeled X) and a straight-
through wired, 8-pin MJ port connector (labeled //). Use only one connector at a time. The MM-10 has jumpers
that control the MM-10 configuration, such as enabling SQE test or monitoring transmit or receive data.

Configuring Jumpers on the 10BaseT MM-10 Option Card

The MM-10 jumpers are set to the most commonly-used configurations. For special applications or
troubleshooting, you may wish to reconfigure the jumper settings. Refer to the following figure and table.
10BaseT MM-10 Jumper Locations
Item
1
4
3
Jumper Description
ACT —> Sets Activity LED to blink on for:
• RX = receive packets only
• TX = transmit packets only
• BOTH = all packets
M A
T -
X U
D L
2
1
NPB-0774-97F
EK-DLXUT-IM. A01
NPB-0773-97F
Default
BOTH