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4. The DVR hardware is damaged.
9.
There is audio signal in the surveillance window but no audio signal during playback.
Possible reasons:
1. The audio option is not chosen in the settings.
2. The allocated channel is not connected with the video.
10.
The time is wrong.
Possible reasons:
1. Incorrect settings.
2. The battery is bad or the voltage is too low.
3. The DVR hardware is damaged.
11.
The DVR cannot control the PTZ.
Possible reasons:
1. There is something wrong with the PTZ.
2. The settings, connection, or the installation of the PTZ decoder is incorrect.
3. The connections are not correct.
4. The DVR PTZ settings are incorrect.
5. The protocols of the PTZ decoder and the DVR are not matched.
6. The address of the PTZ decoder and the DVR are not matched.
7. When multiple decoders are connected, the far port of the PTZ decoder line A (B) must
connect to a 120
Ω
resistance to reduce the reflection, otherwise the PTZ control is not
stable.
8. The distance is too far.
12.
The motion detect function is not working,
Possible reasons:
1. The time range setting is incorrect.
2. The motion detect area setting is incorrect.
3. The sensitivity is too low.
4. Limited by some hardware version.
13.
I cannot login via web or CMS.
Possible reasons are as followed:
Summary of Contents for Detective A4Ci
Page 1: ...INSTRUCTION MANUAL en...
