Dahua NVR100 series User Manual page 302

Click Global config button, the interface is shown as below. See Figure 4-142.

Channel: Please select a channel from the dropdown list.

Preset: Select a preset you want to set the rule. Please note, you need to add a preset first,
otherwise, you cannot see the preset dropdown list. If there is no preset, you can draw a rule in
current channel.

Calibration zone:

Click Add zone
and then click Delete zone button; you can remove the selected zone.

Select gauge type (horizontal/tilt), you can set the corresponding length. You can draw three tilt
gauges and one horizontal gauge at the left pane of the interface.

Select Width/Height and then click Verify, you can draw a line in the calibration zone, and then you
can see its actual length.

Refresh preset: Click it to get the latest preset setup.
Figure 4-141
, you can draw a calibration zone at the left pane of the interface. Select a zone
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