AR 10046249, Operating And Service Manual, Page: 44 / 58

Model 150/150AW1000
24 Rev C
3.3.4 Two-Way Combiner
The Two-Way combiner combines the output signals from the two W-Final modules into equal-amplitude,
equal-phase signals. The amplitude of each signal is 3–3.5 dB below the input signal when both outputs are
terminated into 50Ω loads.
3.4 POWER SUPPLY
Power supply PS1 supplies a +5VDC housekeeping supply for the control system assemblies A12 Control/Fault
Board and A14 Interface Board. PS1 also su5VDC to the A9 Regulator assembly.
PS1 also su15 VDC at 2.5 amps to module A2. PS1 also supplies -15 VDC at 2.5 amps to module A1
through A4 and A6 and A7. PS1 su24 VDC to fans B1 through B3. PS1 is a switching supply that
automatically sets the AC input circuits to the correct connections for the line voltage 90-264 VAC input ranges
47-440 Hz.
Power Supply PS2 is a single output supply which pr32 VDC to the A2 150 Watt module and to the
A9 regulator board. Primary AC circuit protection is provided by the circuit breaker in the Power Entry Module.
Power Supply PS3 is a single output supply which pr24 VDC to modules A4, A6 and A7. Primary AC
circuit protection is provided by the circuit breaker in the Power Entry Module.
3.5 A9 REGULATOR BOARD (SCHEMATIC 10044666)
The A9 regulator board filters the +32 VDC and has one regulator for RF amplifier stage A1.
U2 is an adjustable, three-terminal, positive-voltage regulator capable of sup24 VDC at 5A.
3.6 CONTROL SYSTEM
3.6.1 A12 Control/Fault Board (Schematic 10042218)
The A12 Control/Fault board consists of one 16-bit microcontrollers and several other ICs that monitor and
indicate the status of the amplifier. Power is supplied using only a single 5-volt power supply. The board offers
the following:
Feature Quantity
Open drain outputs 4
Digital outputs 6
Digital inputs (5-volt tolerant) 24
Analog outputs 2
2-channel encoder input 1
Inputs for a keypad 6
Display connectors 1
Serial communication jacks 2
3.6.2 A14 Interface Board (Schematic 10020073)