JF TECH JRC-27F, Руководство пользователя

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A: Possible reasons are as followed:

There is no other device exist in the Local area network

The subnet masks setting incorrectly on Network settings.
Q: The snapshot at alarm function was enable, why not catch picture
A: Possible reasons are as followed:

HDD manage without partition for snapshot.

Partition for snapshot is 0

The snapshot function is not enabled on record-> storage of related channel.
Q: The time shows on digital channel is not the same as local side:
A: Enable the time synchronous function of digital channel.
Q: Cannot see preview picture of analog channel
A: Possible reasons are as followed:

The camera did not connect to video interface

The device did not connect to video source

Video source is broken.
Q: Picture will be frozen when multi-connection and shift devices.
A: 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.
8. Please check the system and maintain regularly.