Digital Video Recorder User Manual
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(1)Network is not stable.
(2)IP address is conflicted.
(3)MAC address is conflicted.
(4)The network card of the computer or the hard disk recording machine is bad.
14 There is something wrong with the USB backup or writing a CD.
Possible reasons are as follows:
(1)The rewritable machine and the hard disk are shared the same data lines.
(2)The data is too much. Please stop recording and backup.
(3)The data exceeds the backup storage.
(4)The backup equipment is not compatible.
(5)The backup equipment is damaged.
15 The keyboard cannot control the DVR.
Possible reasons are as follows:
(1)The serial port of the DVR is not set correctly.
(2)The address is not correct.
(3)When multiple transformers are connected, the power supply is not large enough. Please give each
transformer individual power supply.
(4)The distance is too far.
16 Alarm cannot be recessional.
Possible reasons are as follows:
(1)The setting of the alarm is not correct.
(2)The alarm output is turned on manually.
(3)The input machine is damaged or the connections are not correct.
(4)There are some problems for specific program edition, Please update the program.
17 Alarm is not working.
Possible reasons are as follows:
(1)The setting of the alarm is not correct.
(2)The connection of the alarm is not correct.
(3)The alarm input signal is not correct.
(4)An alarm is connected with two loops synchronously.
5.2 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.
Thank you for choosing our DVR!
