Sub sg, Trigger signal exposure time – Ricoh Small Cubic Type 5.0 Mega Pixel CCD Monochrome PoCL Camera Link Camera FV-L500B1 User Manual

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FV-L500B1
User’s Guide Rev. 1.01

3.2.2

Pulse Width 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 with 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 controlled by the pulse width of the trigger signal as depicted.
Note 4: The FVAL signal does not output when the exposure by the trigger signal does not exists.

3.2.3

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 starts 198 CLK after the rising edge of the trigger signal.

Exposure

time

Sweep charges

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

（Positive）

Video out

*Note. 3

FVAL

*Note. 4

Next VD

*Note. 2

Next VD

Normal mode

Trigger mode

T1'

SUB

(741 CLK)

Trigger signal

Exposure time

Exposure time: T1' = T1 + 741 CLK

30 CLK

Filtering *Note.1