155
8. There is audio when monitor but there is no audio when system
playback.
There are following possibilities:
•
Setup is not correct. Please enable audio function
•
Corresponding channel has no video input. Playback is not continuous
when the screen is blue.
9. Time display is not correct.
There are following possibilities:
•
Setup is not correct
•
Battery contact is not correct or voltage is too low.
•
Crystal is broken.
10. NVR can not control PTZ.
There are following possibilities:
•
PTZ setup, connection or installation is not correct.
•
Cable connection is not correct.
•
PTZ setup is not correct.
•
PTZ decoder and NVR protocol is not compatible.
•
When there are several decoders, please add 120 Ohm between the PTZ
decoder A/B cables furthest end to delete the reverberation or impedance
matching. Otherwise the PTZ control is not stable.
•
The distance is too far.
11. Motion detection function does not work.
•
There are following possibilities:
•
Period setup is not correct.
•
Motion detection zone setup is not correct.
•
Sensitivity is too low.
•
Camera limitation.
