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User Manual
Rev. 1.2 - 21/01/11
TEX2000LCD
panel board;
•
It controls and provides interfacing of the mains surge protection module
(SLSRGPRPJ1KM);
•
It controls and provides interfacing of the power amplifier supply module
(PSL5060);
•
It processes and provides interfacing of the control signals to/from the Bias
Board (SLBIASTEX2K);
•
It processes and provides interfacing of the control signals to/from the Panel
Board (SL007PC2003).
• It acquires and processes the input signals from the Main board
(SLMBDTEXLC06);
•
It feeds and operates the cooling fans;
•
It feeds and controls the LED indicator board.
8.3 Panel board - CPU (SL007PC2003)
The panel board accommodates the microcontroller that runs equipment firmware
and all user interface elements (display, LEDs, keys, …).
This board is interfaced with other equipment modules via flat cables and provides
for power supply, control signals and measurement distribution.
8.4 Main Board (SLMBDTEXLC06)
The main board performs the following tasks:
• Audio and SCA input processing;
• Carrier generation;
• Modulation.
Both measurements are adequately processed and sent to the interface board
that controls the protection modules and relays the signals to the CPU board to
enable readings to be displayed.
8.4.1 Audio input section
The audio input section accommodates the circuitry that performs the following
tasks:
• Input impedance selection
• 15 kHz filtering for R and L channels
• Stereophonic coding
• Preemphasis
• Mono, MPX and SCA channel mixing
