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15). Network connection is not stable.
Possible reasons are as followed:
1 Network is not stable.
2 IPaddressisconicted.
3 MACaddressisconicted.
4 The net card of the DVR is bad.
16). There is something wrong with the USB backup or writing a CD.
Possible reasons are as followed:
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 Thedataexceedsthebackupstorage.
4 The backup equipment is not compatible.
5 The backup equipment is damaged.
17). The keyboard can not control the DVR.
Possiblereasonsareasfollowed:
1 The serial port of the DVR is not set correctly.
2 The address is not correct.
3 Whenmultipletransformersareconnected,thepowersupplyisnot
large enough. Please give each transformer individual power supply.
4 The distance is too far.
18). Alarm can not be recessional.
Possible reasons are as followed:
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 Therearesomeproblemsforspecicprogramedition,Pleaseupdatetheprogram.
19). Alarm is not working.
Possible reasons are as followed:
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 A alarm is connected with two loops synchronously.
20). The remote controller is not working.
Possible reasons are as followed:
1 The remote control address is not correct.
2 The remote control distance is too far or the angle is too large.
3 The battery is used up.
4 The remote controller or the front panel of the recording machine is
damaged.
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