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b) Video transmission is too long or degrading is too huge.
c) Device color or brightness setting is not correct.
7. Q：Decoding and wall mount process are not fluent.
A：This may be due to:
a) Poor network environment.
b) Front-end device setup or malfunction.
c) Limit in decoding channel capacity.
d) Decoding channel malfunction.
8. Q: Video flickers on wall with interference.
A:
a) Display and matrix platform have no common grounding.
b) Video cable quality is low or too long.
9. Q: There is no audio when monitor.
A: This may be due to:
a) It is not a power picker.
b) It is not a power acoustics.
c) Audio cable is damaged.
d) Hardware malfunctions.
10. Q: There is audio when monitor but there is no audio when system playback.
A: This may be due to:
a) Setting is not correct. Please enable audio function.
b) Corresponding channel has no video input. Playback is not continuous when the screen is
blue.
11. Q: Time display is not correct.
A: This may be due to:
a) Setting is not correct.
b) Battery contact is poor or voltage is too low.
c) Crystal is broken.
12. Q: Device cannot control PTZ.
A: This may be due to:
a) Front panel PTZ error.
b) PTZ installation is not correct.
c) Cable connection is not correct.
d) PTZ parameter setting is not correct.
e) PTZ protocol is not compatible with device.
f) The distance is too far.
13. Q: Motion detection function does not work.
A: This may be due to:
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