User 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
FAQ 
  DVR User Manual 
105 
Appendix A FAQ 
Q1.    Why can’t I find the HDD? 
a.  Please check the power and SATA data cables of the HDD to make sure they are  well 
connected. 
b.  For some DVRs with the 1U or small 1U case, the  power of the adapter  may be not 
enough for operating them. Please use the power adaptor supplied along with the DVR. 
c.  Please make sure the HDDs are compatible with the DVR. See 
Appendix C Compatible 
Device List for details. 
d.  The HDD could have gone bad. Change a new one. 
Q2.    Why are there no images output in some or all of the camera windows? 
a.  Please make sure the resolutions of the cameras are supported by the DVR. 
b.  Please make sure the network cables  of the IP camera and DVR  are  both  connected 
properly and the network parameters are set correctly. 
c.  Please make sure the analog camera is connected properly. 
d.  Please make sure the network and the switch both working normally. 
Q3.    The screen has no output after booting the DVR normally. 
a.  Please make sure the screen, HDMI or VGA cables are good and well connected. 
b.  Please make sure the screen supports  the resolution of 1280*1024,  1920*1080, 
2560*1440 or 3840*2160(4K*2K). The DVR  cannot self-adapt to the screen of  which  the 
resolution is lower than 1280*1024, and then the screen will remind you that the screen 
resolution is not supported by the  DVR  or just have no display.  Please change a screen at 
1280*1024, 1920*1080, 2560*1440 or 3840*2160 resolution before booting the DVR. 
Q4.    Forget the passwords? 
a.  The password for admin can be reset through “Edit Security Question” function.   
Click  the  “Edit Security Question” button in the login window and then enter the 
corresponding answer of the selected question in the popup window, the password for admin 
will be reset to 123456 by default. If you forget the answer of the question, this way will be 
invalid, please contact your dealer for help. 
b.  The passwords of other users can be reset by admin, please refer to 10.1.2 Edit User
 for 
details.     
Q5.    The DVR cannot add up to the maximum number of IP cameras? 
Take the 4 CH DVR as an example. Refer to the picture below. The remaining bandwidth should 
be larger than the bandwidth of the IP camera you want to add, or you would fail to add the IP 
camera. You should lower the added cameras’ bitrate to release the bandwidth. It is 
recommended to add cameras by “Quickly Add” for batch adding. 










