ITB ARCHIMEDE 3000, Руководство по эксплуатации

Страница: 14 / 40

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
432
Page 14 of 40
CIRCUIT DESCRIPTION
1 RF AMPLIFIER BOX
INHIBIT
POWER SPLITTER
IN RF
A
c
LOW PASS
FILTER AND
BIDIRECTIONAL
COUPLER
POWER COUPLER
OUT RF
SOLID STATE
AMPLIFIER
IN 48V
OUT PWR
OUT SWR
B
The RF section consists of one 3000 W
(3 x AMP1000-FM) amplifier modules and the Low Pass filter to reduce
the harmonics . In the Low Pass filter output, a bidirectional coupler measures AC/DC power showing the
parameters on the display and sending the signals to the microprocessor which manages the operation and
alarm functions. The circuits are all fully planar designed to allow an immediate access and inspection to all
internal modules. All the RF part is completely screened by an Alodyne Aluminium to comply with EMI
requirements.
2 CPU BOARD
MICROPROCESSOR
Analog
Board
Interface Display
Interface LED and
Switch Board
Interface Relay AUX
Main Power Temperature
Sensor DC

DC
Switching
The CPU board is the heart of the Amplifier. The board contains an ST microcontroller with internally stored the
software for management and control of the Equipment. The software can only be modified locally by qualified
technicians. The CPU is connected to all other boards by flat cables to read the status ( PWR; SWR,
Temperature, ……) and to assure the normal operation. Inside the board there are two DC/DC switching to
deliver the low voltage power from main 48V for all analogue and digital circuits.