P71
26、 The snapshot at alarm function was enable, why not catch picture
Possible reasons are as followed:
1 HDD manage without partition for snapshot.
2 Partition for snapshot is 0
3 The snapshot function is not enable on record-> storage of related channel.
27、 The time shows on digital channel is not the same as local side:
Enable the time synchronous function of digital channel.
28、 Can not see preview picture of analog channel
Possible reasons are as followed:
1 The camera did not connect to video interface
2 The device did not connect to video source
3 Video source is broken.
29、Picture will be frozen when multi-connection and shift devices.
Picture come out from digital channel need few seconds, shift device means to show new picture, so
it needs several seconds to buffer.
6.2 Maintenance
1 Please brush printed circuit boards, connectors, fans, machine box and so on regularly.
2 Please keep the grounding well done to prevent the video or audio signal interfered and the
DVR from static or inductive electricity.
3 Do not pull out the video signal line or RS-232 port or RS-485 port with the power on.
4 Do not use the TV in the local video output port(VOUT) of DVR. It will damage the video
output circuit easily.
5 Do not turn off the switch directly. Please use the turn-off function in the menu or press the
turn-off button in the panel (3 seconds or longer) to protect the hard disk.
6 Please keep the DVR away from heat resource.
7 Please keep the DVR ventilated for better heat radiator.
Please check the system and maintain regularly.
