Appendix A
192 ClareVision Plus Network Video Recorder User Manual
When using the NVR to get the live view audio, there is no sound or there is
too much noise, or the volume is too low.
Possible reasons:
• Cable between the pickup and camera is not connected well; impedance
mismatches or incompatible
• The stream type is not set as Video & Audio
• The encoding standard is not supported with NVR
Solution:
1. Verify the cable between the pickup and camera is connected well;
impedance matches, and is compatible.
Log in the camera directly, turn the audio on, and check that the sound is
normal. If not, contact the manufacturer of the camera.
2. Verify the setting parameters are correct.
Select Menu > Record > Parameters > Record, and set the Stream Type as
Audio & Video.
3. Verify the audio encoding standard of the camera is supported by the NVR.
NVR supports G722.1 and G711 standards, and if the encoding parameter of
the input audio is not one of the previous two standards, you can log in the
CAMERA to configure it to the supported standard.
4. Check if the fault is solved by the above steps.
If it is solved, finish the process.
If not, contact the engineer to do the further process.
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