Digi MIL-250FXC User manual

Doc #: 90000024 Rev. B
MIL•250FXC
100 Base FX
Transceiver Tap
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
“Specifications” on page 4
“Legal” on page 6
250FXC_001
Scale=0
Port 1
Port 2 Monitor
Port 2
PS
5 V DC
1.5 A
P1SD
PWR
MP2SD
P2SD
MIL 250FXC
100 Base FX
Tranceiver Tap
SC Connector
SWITCH
Port 1 Port 2
Monitor
Port 1
MP1SD

Install Guide
Model: MI L-250FXC 2
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.

Install Guide
Model: MIL-250FXC 3
The lines tapped will not affect the signal integrity or loading factor. Incoming
data from either the DCE and DTE lines are regenerated before transmission.
The tapped data is fed to two transceivers for the LAN analyzer’s connection.
Signal integrity is guaranteed for the lines, and the connection to the LAN
analyzer.
Figure 1. MIL-250FXC Possible Connections
Indicators
There are 5 LED indicators on the MIL-250FXC:
• P1SD :Port 1 Signal Detect. This LED illuminates when the MIL-250FXC
receives a signal on port 1. It is yellow.
• MP1SD :Monitor Port One Signal Detect. This LED illuminates when the
device receives a signal on Monitor Port One. It is yellow.
• PWR :Power. This LED illuminates when the device is powered up (using
the power supply adapter). It is green.
•
MP2SD :Monitor Port Two Signal Detect. This LED illuminates when the
device receives a signal on Monitor Port Two. It is yellow.
Server
(or Fast Ethernet Device)
250FXC_002
Scale=0
Fast Ethernet
Device
LAN Analyzer
(or monitoring device)
LAN Analyzer
(or monitoring device)
Port 1
Port 2 Monitor
Port 2
PS
5 V DC
1.5 A
P1SD
PWR
MP2SD
P2SD
MIL250FXC
100 Base FX
Tranceiver Tap
SC Connector
SWITCH
Port 1 Port 2
Monitor
Port 1
MP1SD

Install Guide
Model: MIL-250FXC 4
• P2SD :Port 2 Signal Detect. This LED illuminates when the MIL-250FXC
receives a signal on port 2. It is yellow.
Switch Setting
SW1: If it is in the Up position, then data coming into Port 1 will be transferred to
Monitor Port 2.
SW1: If it is in the Down position, then data coming into Port 2 will be transferred
to Monitor Port 2.
Note: Data from Port 1 is always transferred to Monitor Port 1.
SW2: Reserved.
Specifications
SC Fiber Connector
Figure 2.SC-type Connector
SC connector:Average Output Power
•Wavelength: 1261-1360 nm
•Cable specs.: 62.5/125 µ m
•Min. optical power output: -19.0 dBm
•Max. optical power output: -14.0 dBm
•Receive sensitivity: -30.0 dBm
•Max. optical power input: -14 dBm
•Supports up to 2 km of multi-mode cable
Data Rate: 100Mbps, NRZI encoded.
Climate:Storage Temperature
•Minimum: -25° C
•Maximum: 75° C
250FXC_003
Scale=0
Rear View
SC-Type
TX RX

Install Guide
Model:MIL-250FXC 5
Operating Conditions
Power Supply
External power is required for the MIL-250FXC. The system board draws 1.25Aat
normal operation in room temperature of 25° C.
•A110 V AC wall mount power supply unit for domestic use (supplied).
•A220 V AC with IEC receptacle converting to 5 V DC 1.5 Amp for
international use (supplied for international use only).
Delay: <10 nanoseconds.
Dimensions: 4.0” x 3.5” x 1”
Table 1: Recommended Operation Conditions
ParametersMinimum Maximum
Operating Temperature +5° C 40° C
Humidity: Non-condensing 10% 95%
Signal Output Load 35ohm75ohm
Supply Voltage 4.75 V 5.25 V

Doc #: 90000024 Rev. B
Legal
Regulatory Approvals
• FCC Class A
• UL 1950
• CSA 22 No. 950
• EN60950
• CE
– EN55022 Class B
– EN50082-1
Canadian EMI Notice
This Class A digital apparatus meets all the requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
European Notice
Products with the CE Marking comply with both the EMC Directive (89/336/EEC) and the Low Voltage
Directive (73/23/EEC) issued by the commission of the European Community. Compliance with these
directives implies conformity to the following European Norms:
• EN55022 (CISPR 22) - Radio Frequency Interference
• EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic Immunity
• EN60950 (IEC950) - Product Safety
To Contact Digi
For prompt response when calling for service information, have the following information ready:
• Product serial number and rev.
• Date of purchase
• Vendor or place of purchase
Reach Digi Technical Support at 408/744-2751
Or E-mail at “[email protected]”
Address: 1299 Orleans Drive
Sunnyvale, CA 94089
Voice: 408/744-2775
Fax: [phone]
E-mail: [email protected]
Five-Year Limited Warranty
Digi International warrants to the original consumer or purchaser that each of its
products, and all components thereof, will be free from defects in material and/or
workmanship for a period of five years from the original factory shipment date. Any
warranty hereunder is extended to the original consumer or purchaser and is not
assignable.
Digi makes no express or implied warranties including, but not limited to, any implied
warranty of merchantability or fitness for a particular purpose, except as expressly set
forth in this warranty. In no event shall Digi be liable for incidental or consequential
damages, costs, or expenses arising out of or in connection with the performance of the
product delivered hereunder. Digi will in no case cover damages arising out of the
product being used in a negligent fashion or manner.