Manual
Table Of Contents
- Contents
 - 1 Introduction
 - 2 Basic Operation Guide
 - 3 Wizard & Main Interface
 - 4 Camera Management
 - 5 Live Preview Introduction
 - 6 PTZ
 - 7 Record & Disk Management
 - 8 Playback & Backup
 - 9 Alarm Management
 - 10 Account & Permission Management
 - 11 Device Management
 - 12 Remote Surveillance
 - Appendix A FAQ
 - Appendix B Calculate Recording Capacity
 - Appendix C Compatible Device List
 
Live Preview Introduction 
  DVR User Manual 
39 
Button/Parameter  Meaning 
Click    /    to zoom in/out the image. 
Focus Mode 
If manual mode is selected, focus button & “One Key Focus” & “Day/night 
mode switch autofocus” will be available; if auto mode is selected, the 
time interval setup will be available. 
Click 
  /    to increase/decrease the focal length.   
Click it to focus instantly.   
Day/night mode 
switch autofocus 
If checked, the lens will focus automatically when the camera is switching 
day/night mode.   
Time Interval 
It is the time interval when camera lens is auto-focusing. The interval can 
be set in the drop-down list.   
Note: This function is only available for the models with auto varifocal lens, or the settings here 
are ineffective. 










