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4)-2 Rotary shutter control> To obtain a stiller frozen image, it is necessary to control an exposure time of
light. It is accomplished by adjusting the hole on Rotary shutter (M4). The parts related to Rotary
shutter consist of Rotary shutter (M4), Space motor (M6), Photo interrupter (PI1) and Shutter (M3).
These are controlled with Peripheral Board (G700).
4)-3 Pump control> The pump control signal (Pump ON-OFF, Air flow level 1-5) are sent from the front
panel to Peripheral Board (G700) through Process Board (H700) to turn the pump ON-OFF.
The pump control signal is sent to the micro controller (U32) to turn the pump ON-OFF.
After the micro controller (U32), a part of the pump control signal is sent to the digital potentiometer
to set the air flow level.
4)-4 Auxiliary lamp control> The lamp power supply unit sends the lamp failure signal to Peripheral Board
(G700) when the lamp ignition fails or the main lamp turns off unexpectedly.
The lamp failure signal from the lamp power supply unit is detected by Peripheral Board (G700) and
sent to the FPGA (U19).
The FPGA (U19) sends signals to Auxiliary lamp to move its LED lamp into the light axis and turn on
the LED lamp.
5) SBC Board (F700 / SBC: Single Board Computer)
5)-1 Touch Panel and LCD Display control> To control the capacitive type touch panel and manage the
various operation buttons and menu tabs.
5)-2 USB Memory control> When the image is captured with the setting that the image output has been
assigned to “SERIAL OUT1, 2” port, the captured image will be sent to the USB memory connected
to the port.
5)-3 Patient Data management> To provide the graphical user interface for the patient data and store the
data.
5)-4 Serial port control> To control the RS-232C port for “ENDONET” database software.
5)-5 LAN control> To control the port for a local area network.
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