User's Manual

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User Manual
Rev. 2.0 - 26/06/19
TEX702LCD
ELETTRONICA
directly to the antenna.
Two major features of TEX702LCD are compact design and user-friendliness.
Design is based on a modular concept: the different functions are performed
by modules that, for the most part, are connected through male and facilitates
maintenance and module replacement.
The RF power section of the TEX702LCD features a LD-MOSFET module
delivering up to 800W output power.
Operating frequency stability is ensured by a temperature-compensated reference
oscillator and is maintained by a PLL (Phase Locked Loop) system. The transmitters
will go into frequency lock within 30 seconds after power-on.
The TEX702LCD can operate throughout the frequency bank with no need for
calibration or set-up.
An LCD on the front panel and a push-button board provide for user interfacing
with the microprocessor control system, which offers the following features:
• Output power setup.
• Operating frequency setup.
• Power output enable/disable.
• Power Good feature (User-selectable output power alarm threshold).
• Measurement and display of transmitter operating parameters.
• Communication with external devices such as programming or telemetry
systems via RS232 serial interface or I
2
C.
Four LEDs on the front panel provide the following status indications: ON, LOCK,
FOLDBACK and RF MUTE.
The transmitter management firmware is based on a menu system. User has four
navigation buttons available to browse submenus: ESC ,
, , ed ENTER.
The rear panel features the mains input connectors, as well as audio input
connectors and RF output connector, telemetry connector, protection fuses and
two inputs for signals modulated onto subcarriers by suitable external coders, such
as RDS (Radio Data System) signals commonly used in Europe.