6 selection of audio input – CNB RBDS4848 User Manual
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BDx-Series Installation & User
’s Manual
2.2.6 Selection of audio input
 
a) Soundcard user 
 
▪
Microphone user (1CH audio)
 
We recommend you to choose a microphone that have amplifier. Because few sound cards 
have audio amplifier with a built-in their own board. 
Run the DVR software and go to Setup -> Audio Tab . Select Camera to record audio as below. 
 
▪
Line-In user (2CH audio)
 
Left channel of stereo line-in is Audio1 and Right channel is Audio2. 
Run the DVR software and go to Setup -> Audio Tab . Select Camera to record Audio1(Left sound) and 
Audio2(Right sound) as below.
< Select Camera >
< Select ‘ Audio Channel’> < Click “Setup”> < Select ‘Line in’ >
