VDH-DRN374 Series Hardware Manual
7
1.
Using better directional microphones
2.
Adjust the speaker volume to make it lower than the value of the
generated howling.
3.
Using sound-absorbing materials for decoration to reduce sound
reflections and improve the acoustic environment;
4.
Adjusting the layout of the microphone and speakers can reduce the
whistling.
RS-485 connection
1.
Connect RS-485 cable of the speed dome to the RS-485 interface of DVR,
pay attention to the positive and negative signals.
2.
Connect the video output cable of the speed dome to the DVR video
input
Содержание VDH-DRN374 Series
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