Digi MIL-120A manual Diagnostic LEDs, Configuration, RJ 45 Pinouts

Figure 2. RJ-45 Pinouts

Install Guide

Diagnostic LEDs

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

Configuration

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.

RJ - 45 Pinouts

1 2 3 4 5 6 7 8

MDI

Pin 1=TX+

Pin 2=TX-

Pin 3=RX+

Pin 6=RX-

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)

Model: MIL-120A 3