User's Manual Part 1

14
VEGA
UHF - TV SYSTEM
1.1 DESCRIPTION
The transmitters and transposers in this series VEGA are characterized by high performance and capability
and by excellent linearity over the entire band thanks to the optimization of the RF circuits.
A high degree of reliability is guaranteed, moreover, by the use of oversized cooling devices and by control
circuits operated by modern microprocessor technologies.
These units are used as low-power transmitters or transposers or as driver stages for amplifiers of greater
power and are available in 2 to 20W versions. The excellent spectral purity of the conversion oscillator
endows these units with an excellent signal/noise ratio of the radiated signal.
The synthesized local oscillator allows easy, rapid changing of the transmission channel from the front panel.
The offset option allows frequency shifts in 1Hz (CCIR) or 0.999000999Hz (FCC) steps for operation in
precision offset or isofrequency mode in the various television standards. The units are equipped with an
input connector for an external reference signal at 5MHz.
1.2 MAIN FEATURES
- Modular construction
- Programming of local oscillator from front panel
- SAW Vestigial filter
- Sync restore (SCT)
- Group delay precorrection (SCT)
- Automatic shite level and sync limiter (SCT)
- Multistandard modulator (SCT)
- Available in stero/dual sound version
- Possibility of use of common and separate carriers