JVC LWT0254-001B-H Benutzerhandbuch

This screen enables automatic adjustment according to the brightness. Setting can be performed for the 
camera video signals, such as color level and contour enhancement.

Sets the speed of the electronic shutter.

Set Values
TK-C625E : 1/50, 1/120, 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/10000
TK-C625U : 1/60, 1/100, 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/10000

● To reduce flickering that occurs under fluorescent lighting, set the shutter speed to 1/100 if your local 

power supply frequency is 50 Hz (TK-C625U), and to 1/120 if it is 60 Hz (TK-C625E).

● The higher the shutter speed, the more prominent will be the smear phenomenon. This is a 

phenomenon that is characteristic of CCD, whereby white stripes appear at the top and bottom of a 
bright light source.

TK-C625E:
1/50

TK-C625U:
1/60

Sets the maximum gain of the AGC (Auto Gain Control), which electronically increases the
gain when the object is under low light conditions.
OFF

: Disable AGC.

10 dB : Increase gain by a maximum of 10 dB according to the brightness of the object.
20 dB : Increase gain by a maximum of 20 dB according to the brightness of the object.

● When the AB&W MODEB item is set to AAUTOB, the AAGC MODEB item will be automatically set to A20 

dB

B, and set values cannot be changed.

● The screen may appear grainy at dark places when the gain level is increased.

10 dB

For performing setting related to switching between the B&W and Color modes.

● When in the B&W mode, this camera is sensitive to both visible and near-IR lights. As such, images 

may become out of focus upon switching from the Color to B&W mode, depending on the type of light 
source used. In this case, re-adjust the focus in the B&W mode. In addition, when the 

AAF FOR IRB

(A pg. 25) item is set to 

AONB, focus can be adjusted automatically during mode switching.

● Make use of an IR light as and when necessary.

^

For setting the function on switching from Color to B&W mode.
COLOUR : Color mode at all times and will not switch to the B&W mode. [For TK-C625U,

this is displayed as 

ACOLORB.]

B&W

: B&W mode at all times.

AUTO

: Switches automatically to the Color mode when brightness level of the object is

high, and to the B&W mode when brightness level of the object is low.

ALARM IN

: Switches to the B&W mode when there is an alarm input.B&W mode turns ON

when input contact of the camera's input alarm is short (make),  and B&W
mode turns OFF when the input contact is open (break).

To ensure proper switching between B&W/Color mode
● Switching between the B&W/Color mode can be performed automatically according to the brightness 

of the object by setting the 

AB&W MODEB item to AAUTOB. However, switching may fail depending on 

the lighting conditions and angle of view. In order to ensure proper switching, it is recommended that 
switching be performed by inputting signals from an external sensor (sold separately) to the alarm 
terminal of this camera.

TK-C625E:
COLOUR

TK-C625U:
COLOR

For setting the signal level of the object at which switching to the B&W mode is to be
activated when the 

AB&W MODEB (A pg. 27) item is set to AAUTOB.

LOW

: Switch to the B&W mode when signal level of the object is low.

NORMAL : Switch to the B&W mode when signal level of the object is normal.
HIGH

: Switch to the B&W mode when signal level of the object is high.

● When the AB&W MODEB item is set to a value other than AAUTOB, "- - -" will be displayed and setting of 

the LEVEL item will not be possible.

NORMAL

For setting the type of lighting used for the object when in the B&W mode.
NORMAL : Set to this when a normal light is used.
IR

: Set to this when using an infrared emission light.

● Switching from the Color to B&W mode may not function correctly if the AIRB setting is used under 

ordinary sunlight or fluorescent light.

NORMAL