7706LT
Extended L-Band RF Fiber Transmitter
Revision 1.1
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1.
OVERVIEW
The 7706LT is a fiber optic transmitter for RF signals in the extended L-Band or wider frequency range.
It accepts a single RF input on coaxial cable and provides a single output for optical transmission. An
RF monitor provides a convenient means of obtaining peak satellite signal strength, or additional signal
distribution.
Gain may be adjusted manually or managed automatically via AGC. 13/17V DC adjustable LNB power
with 22kHz tone is also provided.
Features:
•
Extended frequency response for L-Band signals
•
Protocol independent design - transports all modulation formats
•
LNB power with selectable 13/17V DC
•
LNB current limit & short circuit protection
•
22kHz tone on/off for LNB local oscillator control
•
RF monitor output for signal peaking and signal distribution
•
Manual gain and AGC modes for tuning optimal CNR performance
•
Fiber link provides electrical isolation between antenna and facility, mitigating ground loop and
lightning issues
The 7706LT occupies one card slot and can be housed in a 1RU frame that will hold up to three
modules, a 350FR that will hold up to seven modules or a standalone enclosure which holds one
module.
Figure 1-1: 7706LT Block Diagram
