Magus 21Series, User Manual

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sound pick up device, it may has noise. We can take measure as below,
Take sound pick up device with good direction.
Adjust sound box volume，make it lower than noise range.
Using absorb sound material in the environment，which can reduce sound reflect, improve the sound environment.
Adjust the position of the sound pick up device and sound box, it can lower the noise.
5. Power supply
Connect to DC12V power adaptor
6. USB interface
Connect mouse, USB flash, USB mobile device interface. USB device can upgrade and backup the software.
7. UTP network port
Connect to Ethernet devices, e.g. Ethernet switch, Ethernet hub, etc.
Note：when the Ethernet device connect to the network card directly, use cross wire. When the Ethernet devices connect to the computer,
use parallel cable.
8. VGA output
Connect to VGA display，support CRT、LCD display。
9. Alarm output
Send alarm signals; connect to alarm buzzer or lamp. Alarm output cannot connect large power device（Not exceed 1A）. When alarm
output, we should prevent over current destroy the device. If using large power device, must be separated by contactor.
Alarm input
Receive alarm signals; connect to alarm sensor, such as wave sensor, door status switch and shock sensor.
Alarm detector’s GND port connect with com port（Alarm detector should connect with external electricity）；
Alarm detector’s GND port connect with DVR’ s GND port.
Alarm detector’s NC port connect with DVR’ s alarm input port.（ALARM）；
Alarm input and DVR use the same GND port.
RS485 interface
Connect to P.T.Z device.
PTZ should use the same GND port with DVR,or it may cannot control PTZ. We suggest use the shield cable, the shield one can connect