FAQ and Maintenance 118
Files\webrec in PC.
15.
Q: There is mosaic or no video when preview video in the network.
A: This may be due to:
Network is not stable.
The client is subject to resource constraints.
There is area tampering in the device.
The user doesn’t have monitoring authority.
The device has problems in outputting real-time images.
16.
Q: Network connection is not stable.
A: This may be due to:
Network is not stable.
IP address conflict.
MAC address conflict.
LAN switch malfunction or config problem.
Network interface card breaks down.
17.
Q: Alarm signal cannot be disarmed.
A: This may be due to:
Alarm setup is incorrect.
Alarm output has been enabled manually.
Input device breaks down or connection is incorrect.
Some program versions may have this problem. Please upgrade your program.
18.
Q: Alarm function doesn’t work.
A: This may be due to:
Alarm setup is incorrect.
Alarm wiring is incorrect.
Alarm input signal is incorrect.
Two loops are connected with one alarm device at the same time.
19.
Q: Record storage space is not enough.
A: This may be due to:
Camera has poor quality; lens is dirty; it is installed at backlight position; lens has not
been adjusted well, leading to large stream.
HDD capacity is not enough.
HDD breaks down.