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C3412M-D (12/08) 41
IR CUT FILTER
(Applies only to 18X, 23X, and 35X models.)
The 18X, 23X, and 35X cameras have two modes of operation: color, and black-white. You can
increase sensitivity in low light conditions by switching to black-white mode (removing the IR cut
filter). Color mode is preferred in normal lighting conditions.
The following are the settings for the IR cut filter:
OFF: Manual operation is controlled by preset 88 (filter IN) and 89 (filter OUT).
AUTO (default): Automatic operation is controlled by the auto IR level setting.
IN: Images are always displayed in color mode.
OUT: Images are always displayed in black-white mode.
Note: The IN and OUT settings are only available when editing camera settings through the
Presets menu (refer to Presets on page 57).
Low Light Focus
If you are using an IR illuminator, the low light focus feature of the camera can be tuned to
correspond to the setting of the illuminator.
There are three low light focus settings:
OFF (default): Low light focus is not activated.
850NM: Low light focus is tuned to 850 nm (nanometers).
950NM: Low light focus is tuned to 950 nm.
Auto IR Level
The auto IR level is the light level at which the infrared filter switches IN or OUT.
Following are the available settings for the auto IR level:
DUSK (default): Approximately 6 lux (black-white); approximately 13 lux (color).
DARK: Approximately 0.1 lux (black-white); approximately 2 lux (color).
Notes:
• If backlight compensation is ON and the IR cut filter switches OUT in normal lighting
conditions, adjust the Auto IR Level to a darker setting. Refer to Backlight Compensation (BLC)
on page 45.
• Low light does not mean no light. Some type of illumination is required (street light, IR light,
etc.). The camera is not sensitive to IR light when the IR cut filter is IN.
EXIT
SPECTRA IV
LANGUAGE
<SYSTEM INFORMATION>
<DISPLAY SETUP>
<DOME SETTINGS>
ACK ALERT*
RESET CAMERA
CYCLE CAMERA POWER
REBOOT SYSTEM
BACK
EXIT
<CAMERA>
<MOTION>
<POWER UP>
<LINE SYNC>
<PRESETS>
<PATTERNS>
<ZONES>
<WINDOW BLANKING>
<ALARMS>
<AUX>
<TITLE TEXT>
<ALERT>*
<CLEAR>
<PASSWORD>
<CLOCK>
<EVENT>
DOME SETTINGS
TYPE OF LIGHTING
AUTO FOCUS
SURE FOCUS
ZOOM LIMIT
ZOOM SPEED
LOW LIGHT LIMIT
IR CUT FILTER
LOW LIGHT FOCUS
AUTO IR LEVEL
<ADVANCED SETTINGS>
BACK
EXIT
CAMERA
*This setting applies only to Pressurized Spectra IV dome systems.