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User Manual
Rev. 2.0 - 02/09/18
TEX30LCD/S
ELETTRONICA
7.6 Control Board
The main function of this board is to check and correct the MOSFET polarization
voltage of the RF amplifier section.
It also provides the measurement of the absorbed current and contains a circuit
for signaling power supply unit faults.
If no alarms are present, the voltage is adjusted only depending on the set output
power, with a feedback mechanism based on the reading of the power really
delivered (AGC).
The voltage is also affected by other factors, such as:
•
Control of the power level in output, depending on the setting
•
External AGC signals (Ext. AGC FWD, Ext. AGC RFL).
•
Excess of temperature.
•
Excess of absorbed current from the RF module.
