JF TECH JRC-27F, Руководство пользователя

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Update the different program with the origin program files.
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The video files to look up are covered.
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The recording is not on.
Q: The local video is not clear.
A: Possible reasons are as followed:
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The image quality is too bad.
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The reading program is wrong. Reboot up the DVR.
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The data line of the hard disk is damaged.
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The hard disk is damaged.
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The hardware of the DVR is damaged.
Q: There is no audio signal in the surveillance window.
A: Possible reasons are as followed:
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It is not an active tone arm.
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It is not an active sound box.
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The audio lines are damaged.
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The hardware of the DVR is damaged.
Q: There is audio signal in the surveillance window but mo audio signal in the
playback state.
A: Possible reasons are as followed:
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Setting issues: the audio option is not chosen.
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The according channel is not connected with the video.
Q: The time is wrong.
A: Possible reasons are as followed:
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Setting is wrong..
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The battery is in bad connection or the voltage is too low.
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The oscillation is damaged.
Q: The DVR cannot control the PTZ.
A: Possible reasons are as followed:
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There is something wrong with the frontal PTZ.
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The setting, connection or the installation of the PTZ decoder is not correct.
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The connections are not correct.
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The PTZ setting of the DVR is not correct.
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The protocols of the PTZ decoder and the DVR are not matched.
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The address of the PTZ decoder and the DVR are not matched.
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When multiple decoders are connected, the far port of the PTZ decoder line
A(B) must connect a 120

resistance to reduce the reflection otherwise the PTZ
control is not stable.
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The distance is too far.
Q: the motion detect is not working,
A: Possible reasons are as followed:
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The time range set is not correct.
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The motion detect area set is not correct.
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The sensitivity is too low.
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Limited by some hardware edition.