Digi MIL-120A Manuale Utente

Install Guide

Model: MIL-120A

D i ag n o s t i c L E D s

COL/TP:

Collisions are occurring on the 10BASE-T network

RCV/TP

Unit is receiving packets from the 10BASE-T network

Link:

There is an active connection to a10BASE-T hub (or another node)
when

Link

is enabled

Power:

Unit is receiving power

RCV/CX

Unit is receiving packets from the 10BASE2 network

COL/CX:

Collisions are occurring on the 10BASE2 network

C o n fi g u r a t i o n

Next to the COAX cable connector, there is a DIP switch that control the 50 ohm
termination resistor (Figure 1). These switches support a variety of configurations.
Both switches are shipped in the UP position (default). Other configurations
include:

If the MIL-120A is connected to the end of a multi-node segment without a T-
connector and terminator, enable the 50 ohm resistor by:

• Placing switch 1: UP and

• Placing switch 2: DOWN

If the MIL-120A is connected to a single-node “without” a T-type connector and
terminator on a COAX cable of less than one meter’s length:

• Place both switches (1 and 2) in the DOWN position

Note:

For this configuration, you do not need a 50 ohm terminator on the COAX segment of the
MIL-120A's BNC connector.

R J - 4 5 P i n o u t s

Figure 2. RJ-45 Pinouts

Follow these guidelines when connecting the 10BASE-T Port:

• For a Hub or a Repeater, use a straight-through cable (where the pins are

connected 1 to 1, 2 to 2, 3 to 3, and 6 to 6)

• For a Workstation/PC port, use a swap cable (where the pins are connected 1

to 3, 2 to 6, 3 to 1, 6 to 2)

1 2

3 4

5 6

MDI

Pin 1=TX+

Pin 2=TX-

Pin 3=RX+

Pin 6=RX-