User Manual

FAQ
NVR User Manual
111
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 NVRs 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 NVR.
c. Please make sure the HDDs are compatible with the NVR. 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 NVR.
b. Please make sure the network cables of the IP camera and NVR are both connected
properly and the network parameters are set correctly.
c. Please make sure the network and the switch both work normally.
Q3. The screen has no output after booting the NVR 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 or
3840*2160 (4K*2K). The NVR 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 NVR or just have no display. Please change a screen at 1280*1024, 1920*1080 or
3840*2160 resolution before booting the NVR.
Q4. Forget the passwords?
a. The password for admin can be reset through “Edit Security Question” function.
Click “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 NVR cannot add up to the maximum number of IP cameras?
Take the 16 CH NVR as an example. Some 16 CH NVR support a maximum of 120Mbps
bandwidth input (please take the real device for standard). 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.