JVC KY-F550E instruction manual Technical Information, E-49, English,  Slow Shutter Function

Technical Information

Slow Shutter Function

To brighten the images taken in dark places etc.

This function is not achieved through the method of increasing gain electronically. It is accomplished by accumulating charges stored in the CCD imaging device. In addition, by lengthening the duration for accumulating charges, more charges could be stored in the CCD and hence allowing high sensitivity images to be taken under low lighting condition.

The maximum accumulation timing is up till 200 frames (approx. 8 seconds).

● SLOW SHUT 3 FRM Setting

Accumulated CCD	1
charges
Image output signal	1	1	1

WEN output signal

English

Caution

●Normal image level cannot be used under the auto iris mode. Please use the manual iris mode.

●Noise may increase when the number of frames increases, as such, set to an appropriate value.

Random Trigger Function

For verifying the image of a fast moving object detected.

If the trigger signal for the object detected is input, charges will start to accumulate in the CCD imaging device at the camera. The accumulated charges will be output following the next SYNC signal while simultaneously, the SI signal will be output as well, hence allowing the images to be stored in the memory.

Trigger signal	1	2
Charges accumu-
lated in the CCD	1	2
Image output signal		1	1	2	2

SI output signal

E-49