Digi MIL-250FXC Installation Manual

MIL•250FXC

100 Base FX

T ransceiver Tap

Port 1

Port 2

MIL 250FXC

100 Base FX
Tranceiver Tap
SC Connector

Monitor
Port 1

SWITCH

Monitor
Port 2

Installation Guide

This guide includes the following information:

“Introduction” on page 2
“Installation” on page 2
“Indicators” on page 3
“Switch Setting” on page 4

P1SD

MP1SD

PWR

MP2SD

P2SD

Port 1

PS

5 V DC

1.5 A

Port 2

250FXC_001

Scale=0

“Specifications” on page 4
“Legal” on page 6

Doc #: 90000024 Rev. B

Install Guide

Introduction

The MIL-250FXC is a 100BaseFX multi-mode fiber transceiver tap that allows a
user to monitor network traffic flowing on either direction of a link connection.
The device contains four ports:

•Port 1

•Port 2

•Monitor port 1

•Monitor port 2
When the unit is operating, port 1 and port 2 are connected to two Fast Ethernet

devices, which may be NICs, switches, etc. The Monitor ports are typically
connected to a LAN analyzer. Traffic between the two devices can then be
monitored by a LAN analyzer.

The MIL-250FXC is designed to operate in a 100Mbps configuration only. The
device is fully capable of operating in a full-duplex mode.

Features

•Compact aluminum enclosure

•External power supply (5V DC, 1.5 Amp)

•Diagnostic LEDs

Installation

To install the MIL-250FXC:

1.Connect Port 1, Port 2, Monitor Port 1, and Monitor Port 2 to the appropriate
devices.

2.Supply power to the MIL-250FXC using the power supply adapter included
with the unit. Make sure the PWR LED illuminates.

3.Check the P1SD, MP1SD, P2SD, and MP2SD LEDs for proper status. This
depends on the status of the devices connected to all four ports.

Please contact Digi’s technical support if you experience difficulties installing the
MIL-250FXC.

Theory of Operation

The MIL-250FXC is designed to “tap” the incoming data from the DCE and/or
DTE lines to the Monitor port for performance evaluation and error detection.

Model: MI L-250FXC 2