Service manual

1-16 Description: Functional Theory of Operation
Figure 1-6 Power Amplifier Functional Block Diagram
DC Distribution Board
Power Control
Circuitry
RF Board
Output
Board
Driver Amplifier
Q2100 Q2300
Final Amplifier
RF Input
Connector
Forward
Power
Detector
Harmonic
Filter
Circulator
Reverse
Power
Detector
50 Ohm
Load
RF Output
Connector
Backplane
Connector
(10 Pin)
SPI Circuitry
-CPLD
-DAC
- ADC
- NVM
SPI
Buss
Metering
Circuitry
28.6V
Buss
14.2V
Buss
Power Supply
Connector
Power
Control
Voltage
Q4300
Q4400
Q4600
Q4500
U4110
U4120
U4130
U4920
U4930
U4910