Audio; Com Port - Nuvico AP-D1600 Manual

3. AUDIO

4. COM PORT

DVR allows user to synchronize audio channels with desired video
channel. Also, the Audio Gain level may be adjusted.
Configure devices such as PTZ cameras and Keyboard Controller
that utilize COM ports. RS-232C is fixed for COM1&3 and RS-485
is fixed for COM2&4. After making physical connection, Select the
appropriate device and then enter the corresponding baud rate,
parity, stopbit, and databit.
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APEX SERIES DVR