CnM 8 Channel H.264 Digital Video Recorder User Manual page 41

4. Question: DVR cannot record after startup and the interface is showing "H"
Answer:
Make sure power adaptor is DC 19V.
Make sure HDD is formatted.
Check the power and data connection cables of the HDD.
The HDD is defective.
The SATA port is not working.
5. Question: What is meaning of"R""M""I""H" showed in interface?
Answer:
"R"means the channel is recording.
"M" means the channel is on motion detection.
"I"means the channel is on alarm.
"H" means there is either no HDD. the HDD is faulty or the HDD is full.
6. Question: DVR is having problem with real-time images, such as bad image color or serious
brightness distortion
Answer:
If PAL and NTSC is not correctly selected on the BNC output, the images will be in black
and white.
DVR is not compatible with monitor.
The video transmission distance is too far.
The setting of DVR color, brightness or other settings are wrong.
7. Question: No audio sound when monitoring?
Answer:
Check sound box or speaker functions. Also check possible short circuit.
Audio source may be connected to the video channel. You can click to full-screen to check.
The hardware of DVR is defective.
8. Question: No audio sound when playing back?
Answer:
Setting problem: open audio-video item.
Check the audio to see if it is closed in playback interface.
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