Ricoh Small Cubic Type UXGA CCD Monochrome PoCL Camera Link Camera FV-L200B1 - Manual (Page 18)

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FV-L200B1
User’s Guide Rev. 1.01
3.3.2 Edge Preset Trigger Mode (Non-Reset)
Note 1: The camera does NOT switch to normal mode when the long exposure mode is selected.
This timing chart shows when the long exposure mode selected.
Note 2: The internal VD signal does not reset by the trigger signal.
The video output signal is sent out at the next internal VD timing.
Note 3: The exposure time is preset by the camera setting communication as “shutter speed”.
Note 4: The FVAL signal does not output when the exposure by the trigger signal does not exists.
3.3.3 Exposure Timing
Notes: The trigger signal equal to or shorter than 30 CLK is removed by the filtering system.
Input trigger signal has to be more than 31 CLK pulse width.
The exposure starts101 CLK after the rising edge of the trigger signal.
Exposure
time
Automatically switch to the normal
mode if the pulse width of the
trigger signal is more than
500 mseconds.
*Note. 1
Camera mode
Internal VD
CCD exposure
Trigger signal
(Rising edge)
Video out
*Note. 3
FVAL *Note. 4
Next VD
*Note. 2
Next VD Next VD
Normal mode Trigger mode Normal mode
Trigger signal
Exposure time
T1'
SUB
SG
Exposure time: T1' = Preset electronic shutter
Filtering *Note.1
30CLK