Foxcom's Sat-Light IF Fiberoptic Interfacility Links
Foxcom's Sat-Light IF IFLs offer a high performance, cost effective alternative to conventional coaxial-cabled systems. Sat-Light's IFLs cover the range of 10 to 200 MHz. Sat-Light's IFLs cover the range of 10 to 200 MHz. They are
used for the transmission over single mode fiber optic cable of
modulated outputs received from modems or up/downconverters. Inputs of
70 or 140 MHz require no modifications or adjustments.
The Sat-Light IFLs function 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.
Broadband Transmission - 70/140 MHz
Flat frequency response from 10 to 200 MHz
Protocol Transparent - transmits all video, audio and data
Transmission distances ranging from 100m 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
Sat-Light IFLs 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.
Foxcom 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
The Sat-Light system consists of compact modules that plug into a 19"
wide 3U chassis/power supply. The chassis allows accommodation of up to
8 Sat-Light modules in addition to main and standby power supplies.
Standalone versions are also available.
Accessories are available for the Sat-Light IFLs to accommodate the
wide variety of system design preferences in use.
The 7830 Link transmits an IF signal over singlemode fiber from a
satellite modem to satellite antenna equipment up to 2 kilometers away.
This cost effective link is intended primarily for single video channel
uplinking delivering exceptional signal quality independent of distance.
The 7830 IFL has a high power input (-25 to -5 dBm).
The 7870 Fiberoptic Interfacility Link (IFL) is the first product to
be released in the new generation of high performance 7800 series of IF
fiberoptic links. The 7870 IFL is designed and optimized for high
density/multi-channel short to medium distance applications (up to 15
kms) with high input/output power levels.
19" x 5.25" x 7"
5" x 4.8" x 1.6"
BNC 75 O
Power For Rackmount Chassis
110 or 220 VAC 50/60 Hz 60 watts (max)
15 VDC @ 400 mA (max)
15 VDC @ 300 mA (max)
Operating Temp. Range
-10°C to 55°C
Storage Temp. Range
-40°C to 85°C
RF Characteristics for Model 7830 Modules
±0.25 dB @ 36 MHz
±0.75 dB @ full band
70dB @ 1MHz /3Km
Input Signal (max)
Output Signal (max)
Gain Stability @ Constant Temperature
± 0.25 dB @ 24 hours
Transmitter Gain Range
Receiver Gain Range
Up to 20 dB
OIP3 @ Maximum Input Power
Noise Figure (typical)@ Maximum Input @ 1 dB Optical Loss @ Unity Gain