Ricoh FV-L500B1 manual Pulse Width Trigger Mode（VReset ）

3.2Pulse 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.

3.2.1Pulse Width Trigger Mode（VReset ）

Camera mode	Normal mode			Trigger mode			*Note. 1	Normal mode
						*Note. 2	Automatically switch to the normal
							mode if the pulse width of the
					Max. 1H
							trigger signal is more than
							500 mseconds.
Trigger signal
(Positive）
Internal VD
		Sweep charges
			*Note. 3
			Exposure
CCD exposure			time

Video out

FVAL

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.

FVL500B1	16/31
User’s Guide Rev. 1.01