Dahua NVR52-4KS2 Series User Manual page 241

Step 3 Turn on the EPTZ linkage function, and then configure parameters.
If a certain channel has turned on the EPTZ linkage function, the configuration will still
take effect after exiting playback. When replaying the recording of this channel again, the
EPTZ linkage effect is still displayed.
Figure 5-103 Setting the EPTZ linkage for playback
Parameter
Display Mode
Linkage Track
Figure 5-102 EPTZ linkage for playback
Table 5-30 Parameters description
Description
Select the number of tracked channels. Full screen, 1+1, 1+3 and 1+5
modes are available, and full screen is selected by default.
After Linkage Track is enabled, intelligent events will be tracked. It is
disabled by default.
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User's Manual