Digi MIL-240FXC, MIL-240FXT Installation Manual
MIL-240FXT/MIL-240FXC
100BASE-FX
Redundant Port Selector
SC Connector
Main Port
MIL•240FXC
100BASE-FX
Redundant Port Selector
SC Connector
Selector
Primary Port
Backup Port
MPSD
PPSD
PWR
BPSD
5 V DC
PS
1.5 A
ST Connector
SC ConnectorSC Connector
Installation Guide
This guide includes the following information:
“About this manual” on page 2
“Introduction” on page 2
“Features” on page 2
“Installation” on page 2
Main Port
Selector
Primary Port
MIL•240FXT
100BASE-FX
Redundant Port Selector
ST Connector
Backup Port
ST ConnectorST Connector
MPSD
PPSD
BPSD
PWR
5 V DC
PS
1.5 A
“Theory of Operation” on page 3
“Indicators” on page 3
“Specifications” on page 4
“Legal” on page 5
Doc #: 90000021 Rev. C
Install Guide
About this manual
This manual covers both the MIL-240FXT and the MIL-240FXC. The terms “MIL240FX,” “transceiver,” and “device” are used throughout this document to
describe either transceiver.
Introduction
The MIL-240FXC/240FXT is a 100BASE-FX, fault-tolerant transceiver. It provides
a redundant path for a critical Fast Ethernet device, such as a file server. The MIL240FX has three 100BASE-FX ports:
Port
.
Main
Port, Primary Port
, and
Backup
Typically, the Main Port will connect to a critical Fast Ethernet device (i.e., a file
server). The Primary Port
and the Backup Port connect to two different ports
of a switch, or two different ports of two different switches.
When the unit is powered on, the MIL-240FX checks the Primary
presence of a link signal. If the signal is present, then the Main Port
Primary
connected to the Backup
device does not detect a signal on the Primary
Backup
Port will connect, and the Backup Port is disabled. Any device
Port will not detect a signal at this time. However , if the
Port , then the Main Port and
Port will connect.
Features
• Three multi-mode, SC connector for the MIL-240FXC
• Three multi-mode, ST connector for the MIL-240FXT
• Compact aluminum enclosure
• External power supply (5V DC, 1.5 Amp)
Installation
To install the MIL-240FX:
1. Connect the
Main ,
Primary and
Backup
Ports to the appropriate devices.
Use multi-mode 62.5/125mm fiber optic cables.
Port for the
and the
2. Supply power to the unit using the power supply adapter included with the
unit. Make sure the PWR
3. Check the PPSD , BPSD and MPSD LEDs for proper status. This depends on the
status of the devices connected to the Primary
Model: MIL-240FXC/MIL-240FXT 2
LED illuminates.
,
Backup and
Main
Ports .
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