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OCR Type A230
Camera number and parallel port for Detailed Mode
Display Camera/Image
A camera/Thru image
B camera/Thru image
A camera/Mem image
B camera/Mem image
Data input port
Data output port
Camera switching timing chart for Detailed Mode
Camera No.
/IN to /IN2
READY signal
/READY
Camera
/IN7
switch input
ERROR signal
/ERROR
(A): Input the Camera No. from the external device.
(B): With the READY signal on, input IN7 from the external device.
(C): The falling edge (off to on) of IN7 is detected, and the READY signal goes off.
(D): After the camera has switched, the READY signal goes on (if a display switch error
is generated, the ERROR flag goes on at the same time as the READY signal).
IN2
OFF
OFF
ON
ON
IN7 = Display switch timing
IN1 to IN2 = Camera image designation No.
READY = Ready signal
ERROR = Error flag
(A)
OFF
(C)
ON
OFF
(B)
ON
OFF
Communications (Serial and Parallel)
16.9 Switching the Display Camera
IN1
OFF
ON
OFF
ON
(D)
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