True-Day/Night (Tdn); Wide Dynamic Range (Wdr) - Honeywell ACUIX Installation And Configuration Manual

True-Day/Night (TDN)

Wide Dynamic Range (WDR)

Document 800-05662 Rev C
06/10
ACUIX™ PTZ High Speed Analog Dome Installation and Configuration Guide
When the light level drops too low for a camera to accurately catch objects in color, the
True Day/Night (TDN) feature automatically moves the IR cut filter out of the optical path
and switches to black and white mode. A TDN camera captures more detail in low light
by using ambient infrared light or external IR sources. On the OSD the term NightShot
means the same as TDN and this type of camera is required to make configuration
changes.
Note The focus changes when the IR cut filter is removed. Therefore, when a preset
is programmed during the day it may be out of focus at night when the IR cut
filter is removed. The only way around this is to have day presets and night
presets.
Available with the HDXJ, HDXF and HDXG cameras.
Wide dynamic range (WDR) allows for proper exposure of an entire scene, even one
which has very bright and very dark areas or one in which a portion of the scene is brightly
backlit. WDR is perfect for lobbies, loading docks, and ATMs. WDR scans the video and
sets the exposure level so it is balanced between the bright areas and dark areas.
The ACUIX domes with WDR scan each frame twice - once very quickly with a short
shutter time for the bright areas and again at near normal speed with a slower shutter time
for the dark areas. The two scans are then combined to yield a frame where the bright
areas come from the fast scan and the dark areas come from the slower scan.
Available with the HDXJ, HDXF and HDXG cameras.
25