PJ1000C/1300C/2000LCD
ELETTRONICA
29
/ 36
User Manual
Rev. 1.0 - 28/02/11
7. Working Principles
Figure 7.1 below provides an overview of
PJ1000C-LCD
,
PJ1300C-LCD
and
PJ2000LCD
modules and connections.
DRIVER
SPLITTER
MAIN BOARD
LPF +
DIRECT. COUPL.
COMBINER
FUSE BOARD
BIAS
INTERFACE
PANEL
TELEMETRY
INTERFACE
ALIM 24V 3A
SURGE
PROT.
PFC
LED CARD
INPUT
(AUDIO/RDS)
R.F.
OUTPUT
RF MODULES
MAINS
R.F.
R.F.
4 X R.F.
4 X R.F.
R.F.
DC
4 X 50VDC
4 X VPA (50VDC)
VPA (50VDC)
4 X VPA (50VDC)
FWD PWR
RFL PWR
BIAS
PS ALARM
VOLTAGE REG.
Figure 7.1
Following is a brief description of the different module functions; all diagrams and
board layout diagrams are included in the “Technical Schedule” Vol.2.
7.1 PJ1000C/1300C/2000LCD Common Parts
7.1.1 Panel Board
The panel board accommodates the microcontroller that runs the machine control
software and all user interface elements (display, LED’s, keys, …).
This board is interfaced with other machine modules via
flat cables
and provides
for power supply, control signals and measurement distribution.
7.1.2 Interface Board
This board performs the following tasks:
•
It uses AC voltage to generate and distribute service power supply over the
panel board;
•
It controls and provides interfacing of the mains surge protection module;
•
It controls and provides interfacing of the power amplifier supply module;
•
It processes and provides interfacing of the control signals to/from the Bias
Board;
