User's Manual

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12) Q: The monitor has no sound.
A: Possible causes:
 It is not an active speaker.
 Audio cable is damaged.
 Hardware malfunction.
13) Q: There is audio under monitoring state but no audio under playback state.
A: Possible causes:
 Audio function is not enabled.
 The corresponding channel does not connect to the camera. Playback is not
continuous when the screen is blue.
14) Q: System time is not correct.
A: Possible causes:
 Setting is not correct.
 Poor battery contact or voltage is too low.
 Crystal oscillator is poor.
15) Q: USB backup error.
A: Possible causes:
 Too much data which occupies CPU resources. Please stop recording first and then
begin backup.
 Backup device is not compatible.
 Backup device is damaged.
 The backup device features high power and needs separate power supply.
16) Q: Alarm function does not work.
A: Possible causes:
 Alarm setting is not correct.
 Alarm cable connection is not correct.
 Alarm input signal is not correct.
 There are two loops connected to one alarm device.
17) Q: Messy channel display.
A: Possible causes:
 Incorrect selection of camera type. Auto switch is recommended.
 The camera is damaged.
18) Q: Record storage time is not enough.
A: Possible causes:
 Low camera quality, dirty lens, camera installed against the light, or iris not properly
adjusted caused large big rate.
 HDD capacity is not enough.