C2487M-A (4/05) 17
IR CUT FILTER
Spectra III has two modes of operation: color, and black and white. You can increase sensitivity
in low light conditions by switching to black and 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.
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)
NOTE: 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 the

Backlight Compensation

section.
NOTE: 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.
BACK
EXIT
AUTO FOCUS ON
ZOOM LIMIT X144
ZOOM SPEED MEDIUM
LOW LIGHT LIMIT 2
IR CUT FILTER AUTO
AUTO IR LEVEL DUSK
<ADVANCED SETTINGS>
CAMERA
BACK
EXIT
<CAMERA>
<MOTION>
<POWER UP>
<LINE SYNC>
<PRESETS>
<PATTERNS>
<ZONES>
<WINDOW BLANKING>
<ALARMS>
<AUX>
<ALERT>*
<CLEAR>
<PASSWORD>
DOME SETTINGS
EXIT
SPECTRA III
LANGUAGE ENGLISH
<SYSTEM INFORMATION>
<DISPLAY SETUP>
<DOME SETTINGS>
ACK ALERT*
RESET CAMERA
CYCLE CAMERA POWER
REBOOT SYSTEM
(See page 9)
Quick Programming Guide
*This setting only applies to
Pressurized Spectra III dome
systems with software version
1.27 or higher.