ADCTDN2412N_P_EN.book Page 29 Friday, September 28, 2007 12:49 PM

LEVEL adjustment

Monitor screen

LEVEL adjustment direction

 

 

To darken

Anti-clockwise (Towards L)

 

 

To brighten

Clockwise (Towards H)

 

 

Memo:

If the LEVEL sensitivity adjustment is turned excessively to L, the sensitivity increases because of the AGC function of the camera and the image looks grainy.

Depending on the lens used, if the LEVEL dial is turned excessively to L, the hunting phenomenon (floppy screen) where the iris opens and closes involuntarily may occur. In such a case, first set the LEVEL dial to the H position, and then readjust the LEVEL dial while checking the video signal.

To adjust the focus accurately, open the lens iris. Below is how to open the lens iris for autoiris lens.

Press the [SELECTOR] switch on the back panel up (J) for 1 second. [FOCUS ADJUST MODE] is displayed on the monitor screen.

When the focus adjustment is completed, press either [SELECTOR] switch (J, K, H, K), [MENU] or [SET] button.

[FOCUS ADJUST MODE] display disappears and the lens iris returns to original state.

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American Dynamics ADCTDN2412P, ADCTDN2412N, ADCTDN0230P manual  Level adjustment