Understanding Wide Dynamic Range - American Dynamics SpeedDome Ultra 8 Operator's Manual

If the current IR Mode setting is...
IR Mode nM On
IR Mode Off
IR Mode nM Auto High, nM Auto Mid, or nM
Auto Low

Understanding Wide Dynamic Range

Wide Dynamic Range (WDR) is a feature that allows clear viewing of both bright and low
light areas in a scene. Use this feature if you need to view both indoor and outdoor lighting
conditions simultaneously.
For example, a dome is installed in the loading dock area of a building. When the door to the
loading dock area is closed Figure 20, the light level remains constant and the interior scene
can be viewed clearly without iris adjustments.
When the door is open, additional light from outside enters the room and distortion occurs.
Without WDR, you could adjust the iris of the camera to compensate for the lighting change;
SPEEDDOME ULTRA 8 CONFIGURATION UTILITY
OPERATOR'S GUIDE
Table 4. IR Mode menu settings
Tip: If you need to resume nM Auto High, nM Auto Mid, or nM Auto Low IR
mode settings, you must use the Dome Configuration Menu. See Changing the
IR Mode Setting on page 30.
Note: The Wide Dynamic Range feature is only available on 35X camera domes.
Figure 20. Example scene of a loading dock with the door closed
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The setting changes to...
IR Mode Off
IR Mode nM On
IR Mode nM On
8200-0600-01, REV. B