Download Users Manual Model HL-1.5KFX

11-4 Main Control (PCS1699)
This is the heart of the control signal processing for the HL-1.5KFX. It judges the operating condition of
the amplifier, as well as issuing the commands to the peripheral circuits. Various analog signals are sent
to the MPU such as RF drive from the transceiver, RF power signals at various points, DC power supply
information, etc.
These are converted to digital signals using a A/D converter. The MPU will then numerically compute the
data, to determine the amplifier status, and issue commands for protections, as needed.
Transmit-Receive switching, high/low control of fan, and which LED get lit are all performed by the MPU
on this board.
METER SW
METER
WARNING
FORWARD
A/D
REFLECT
A/D
RF INPUT
A/D
O.DIRVE
O.HEAT
O.VOLT
FUSE
PR
MPU
VD
PA CONT
POWER AMP
A/D
ID
PA CONT
PIC18F8722
ONAIR
FAN
ID
A/D
FAN High/Low
FUSE
O.HEAT
ANT
OPER
A
B
ANT
ANT SEL
ANT RY
STBY
ALC AMP
ALC
ALC ADJ
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