Specifications

Benhur Corporation – Multidyne, International Sales

Fiber Optic Links

MULTIDYNE’s™ IFL-7000 Series IF Fiber Links offer a high performance, cost effective alternative to conventional coaxial-cabled systems.

The system covers the range of 10 to 200 MHz. They are used for the transmission over Singlemode fiber optic cable of modulated outputs

received from modems or up/downconverters. Inputs of 70 or 140MHz require no modifications or adjustments.

The IFL-7000 functions as a transparent link between the satellite antenna and the Network Operations Center (NOC) or control room.

System limitations in using coaxial cable are overcome by the simplicity and performance of fiberoptic connections to provide the highest

levels in signal quality.

The system consist of an optical transmitter, which receives the RF signal from a modem, transceiver, or down converter, and an optical

receiver that connects to an upconverter, modem, or transceiver. All satellite modulation schemes are accommodated digital or analog.

Format independence is achieved by inherently low phase noise. The RF signal is converted at the transmitter to an optical signal by

direct modulation of a semiconductor laser diode. At the receive end, the optical signal is converted back to an RF signal by a photodiode.

All units are optionally available as outdoor units (ODUs), capable of operating in extreme conditions. For more information regarding the

IF ODUs, contact MULTIDYNE.

MULTIDYNE offers a wide range of products to meet all your specific satcom needs. Short distance downlink applications can be

achieved using our cost effective isolated Fabry Perot products while professional and more demanding long distance or multi-carrier

applications can be met using our high dynamic range DFB lasers - delivering excellent signal quality even under varying conditions.

Product options include Automatic and Manual Gain Control. Automatic Gain Control (AGC) at the transmitter site sets and maintains

optimum operation over a wide range of input signal levels. At the receiver site AGC maintains the RF level regardless of optical power or

distance from transmission site. Alternatively, Manual Gain Control (MGC) at the transmitter site allows the system operator to maintain

optimum operation over a wide range of input signal levels on the transmitter site and RF output level on the receiver site. Front panel

RF test ports, LEDs, back panel monitors and alarms allow for complete status system monitoring and for interfacing with M&C systems.

The IFL-7000 system consists of compact modules that plug into a 19”. wide 3U chassis/power supply. The chassis allows

accommodation of up to 8 IFL modules in addition to main and standby power supplies. Standalone versions are also available.

Accessories are available for the IFL-7000 to accommodate the wide variety of system design preferences in use.

IF Interfacility Links

Model Application Frequency Optical Budget Gain Control Laser

IFL-7830 Short Distance, Single Channel Video 10-200 MHz 3 dB / 2 Km Manual (Rx Only) Isolated Fabry Perot

IFL-7870 High Density, Multi-Channel 10-200 MHz 8 dB / 15 Km Manual (Rx only) DFB

IFL-7070D High Dynamic Range, Multi Channel 10-200 MHz 16 dB / 40 Km Manual/Automatic DFB

IFL-7070D-15 Ultra Long Distance 10-200 MHz 16 dB / 60 Km Manual/Automatic DFB

IFL-7000

•　 Broadband Transmission – 70/140 MHz

•　 Flat frequency response from 10 to 200 MHz

•　 Protocol Transparent – transmits all video, audio and data modulation formats

•　 Transmission distances ranging from 100 meters to 50km

•　 Gain Control, Indicators, Alarms and Monitors

•　 Single or Multi Channel up or downlink transmission

•　 Interface with M & C Systems for remote signal monitoring