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Ricoh Rioch 5 Mega Pixel CCD Monochrome PoCL Camera Link Camera FV-L500B1 User Manual

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FV-L500B1
User’s Guide Rev. 1.02

3.2

Pulse Width Trigger Mode

In this “pulse width trigger mode” with positive polarity, the camera exposure starts at the rising edge of the

trigger signal and stops at the falling edge of the trigger signal. Therefore, in the case that the exposure positive
polarity is selected, the actual exposure occurs when the trigger signal is at high state.

3.2.1

Pulse Width Trigger Mode(V-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 is reset immediately after the exposure is finished as depicted, and the video output

original is sent out according to that reset VD timing.

Note 3: The exposure time is controlled by the pulse width of the trigger signal as depicted.















Exposure

time

Max. 1H

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. 2

*Note. 3

FVAL

Normal mode

Trigger mode

Normal mode