Fiber Optic Modems

Single Channel FOMs

The single channel FOM is currently available in four standards based communications interfaces: The standard U.S. Army FOM MD-1272/G, Eurocom D/1 Interface B, E3 and DS3. These modems transmit up to 16 km without a repeater. The single channel FOM’s are designed to mount on the Signal Entry Panel (SEP) of the tactical communication shelters or they can be installed in a rack mount panel. FOM’s are available with various tactical fiber optic connectors, including TFOCA, *TFOCA-II® and Expanded Beam.

Single Channel FOM Configuration U.S. Army and ANSI Standards

Description MD1272/G DS3/1 Integrated IP/MD1272/G IP/1 10/100
TFOCA Model A3099781 107900 N/A 110100-202
TFOCA-II Model 109500-202 107900-202 110800-201 110100-201
Electrical Signal Balanced NRZ
Conditioned Diphase		 ANSI T1.102 Balanced NRZ Conditioned Diphase, IEEE 802-3-2000 IEEE 802.3-2000
Optical
Signal		 JTC2A 9109C JTC2A 9109C JTC2A 9109C JCT2A 9109C
Electrical
Interface		 MS27468T
17B35A		 MS27505E
15B15P 75 Ohm BNC		 MS27468T
17B35A Shielded RJ45		 MS27505E
15B15P Shielded RJ45
Alarms Summary
(LOS, BER, RAI)		 Summary
(LOS, BPV, EXZ)		 Summary
(LOS, BPV, EXZ) Optical and Electrical Signal Speeds		 Optical and Electrical Signal Speeds
Environmental
Specifications		 Tested to Meet Designed to Meet Designed to Meet Designed to Meet
Fiber Multimode Multimode Multimode Multimode


Single Channel FOM Configuration EuroCom D/1 and ITU Standards

Description EuroFOM E1/1 EuroFOM-B/1 EuroFOM-E3/1 IP/1 10/100
Model 109700-201 109200 109000-101-201 110100-201
Power Requirement 28 VDC 28 VDC -48 VDC or 5 VDC 28 VDC or 5 VDC
Electrical Signal ITU G.703 EuroCom D/1, Interface B ITU G. 703 IEEE 802.3-2000
Optical Signal JTC2A 9109C JTC2A 9109C JTC2A 9109C JCT2A 9109C
Electrical Interface 75 Ohm BNC MS3126E14-19P 75 OHm BNC CAT 5 / RJ45
Standard Accessories Power Cable, Mounting Diagrams Wiring and Mounting Diagrams Power Cable, Mounting Diagrams EMI Gasket
Alarms Summary
(LOS, BER, RAI)		 Summary
(LOS and Transmit Fault)		 Summary
(LOS, BPV, EXZ)		 Optical and Electrical
Signal Speeds
Environmental
Specifications		 Designed to Meet Designed to Meet Designed to Meet Designed to Meet
Fiber Multimode Multimode Single & Multimode Multimode

 

General Specifications

  • Up to 16 kilometer repeaterless communication
  • Light Emitting Diode (LED) light source
  • Designed for tactical environment
  • 3.75 Watts maximum power consumption
  • Typical Optical Output Power:
    • Minimum (at +52 C) = -21.7 dBm
    • Maximum (at -35 C) = 7.5 dBm
  • Received Optical Power:
    • Minimum = -44.5 dBm
    • Maximum = -7.5 dBm

Physical Characteristics:

  • Weight: 2.2 lbs or 1.0 kgs
  • Dimensions (in) 4.0 x 4.0 x 3.75 or 10.16 x 10.16 x 9.53 (cm)

*TFOCA-II® is a registered trademark of Amphenol Fiber Systems International

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