PLANET NVR-420 - Manual (Page 23)

Only PTZ capable cameras will be listed in the drop-down menu
The bar highlighted above controls the moving angle. Larger number
means bigger movement angle.
4.2.1 Perform PTZ Preset Viewing
There are three functions provided in the “Preset” section:
• Perform preset point viewing of a particular camera
• Auto pan a particular camera
• Perform preset point sequence viewing
In order to use this function, one must configure camera's preset points in "NVR
Setup" >> "Channel Configurations" >> "PTZ Preset" first
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4-CH H.264 Network Video Recorder with HDMI
User’s Manual of NVR-420