Digi MIL-190C User Manual
MIL-190C
Fast•Twist
Fast Ethernet Converter
Single-mode Fiber
FAST•TWIST
Model MIL•190
100BaseFX
Phillips-head
Screws
FX ACTIVE
to
100BaseTX
Fast Ethernet
CONVERTER
Single Mode Fiber
Ethernet / IEEE 802.3
POWER
RXTX
TX ACTIVE
Power
Connector
5VDC
1 Amp
Phillips-head
Screws
SC-Type
Connector
LEDs
RJ-45
Connector
Installation Guide
This guide includes the following information:
“Introduction” on page 2
“Installation” on page 2
“Diagnostic LEDs and Conditions Indicated” on page 2
“Configuration” on page 3
“RJ-45 Pinouts” on page 3
“Legal” on page 4
Doc #: 90000072 Rev. A
Install Guide
Introduction
The MIL-190C supports Fast Ethernet in both half- and full-duplex mode. For
network budget constraint, the MIL-190C uses 150 nanoseconds (approximately
30 meters of cable) during conversion in each direction.
To maximize the fiber cable distance, use one meter of category 5 (CAT 5) UTP
cable when connecting directly to a node (subject to fiber budget of 16 dBm and
collision domain restrictions). In full-duplex environments, up to 100 m of CAT 5
UTP and 15Km of 1300 nm single-mode fiber cable can be used:
• Launch power: -15dB
• Receive sensitivity: -31dB.
Installation
1. Attach a UTP cable from the network to the RJ-45 port. (Use screened UTP
cabling for CISPR 22 class B installation.)
2. Cross-connect the fiber cables: Attach both fiber cables TX to RX and RX to TX
from the fiber network cabling to the SC-type connector on the MIL-190C.
3. Apply power to the unit:
a. Insert the power adapter's receptacle into the power plug.
b. Insert the power adapter into a wall outlet.
Diagnostic LEDs and Conditions Indicated
Table 1:
LED Condition Color
TX Active Device is active on the 100BASE-TX UTP Yellow
Power Device is receiving power Green
RX Active Device is active on the 100BASE-FX UTP Yellow
Note:
The “Active” lines indicate that a valid receive signal is sensed. Check the devices
connected to each end of the MIL-190C to ensure that Link is present at those points as
well.
Model: MIL-190 2
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