Dahua ITC231-RF1A-IR User Manual page 69

Parameter
Iris Type
Iris Adjust Mode
6.5.2.1.4 Metering Zone
The metering zone interface is shown as in
Select Setting>Camera>Attributes>Metering Zone.
Please refer to the following sheet for log parameter information.
Parameter
Metering zone
Backlight/Front
light
Note
Select current lens to use.
Select iris adjust method. Different lens types have different adjustment
of iris.

Default: auto adjust.

Manual: manually adjust.
Figure 6-53 Metering Zone
Function
 Spot measure: For moving vehicle.
 Full measure: For entire zone.
 Partial measure: For sensitive zone. If the zone is bright, entire zone will be
dark and vice versa.
According to actual condition, select backlight or front light.
Note:
Spot measure only.
Chart 6-22
Figure 6-53 Metering Zone
.