Q-See QSF2648016 - Manual (Page 47)

User Manual for Commercial Series Net DVR
Page
47 Total 121
5.3 Main and Aux output playback
Both “Main” and “Aux” output can be used to playback the recorded files on DVR HDD.
Press
【Main/Aux】button to enter into “Main” or “Aux” control mode, and press 【PLAY】button
to enter into “Playback” menu. You can use “Main” output to playback one channel and “Aux”
output to playback another channel at the same time.