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Teledyne API - Model T200H/T200M Operation Manual
Principles of Operation
303
8.7. FRONT PANEL/DISPLAY INTERFACE ELECTRONICS
Users can input data and receive information directly through the front panel touch-screen
display. The LCD display is controlled directly by the CPU board. The touch screen is
interfaced to the CPU by means of a touch screen controller that connects to the CPU via
the internal USB bus and emulates a computer mouse.
Figure 8-24:
Front Panel and Display Interface Block Diagram
8.7.1. FRONT PANEL INTERFACE PCA
The front panel interface PCA controls the various functions of the display and touch
screen. For driving the display it provides connection between the CPU video controller
and the LCD display module. This PCA also contains:
•
power supply circuitry for the LCD display module
•
a USB hub that is used for communications with the touch screen controller and the
two front panel USB peripheral device ports
•
the circuitry for powering the display backlight
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Содержание T200H
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