User Manual of DS-8104HMI-A(/XX) Series Mobile Net DVR (V1.20.00)
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(1) Power supply interface has correct power connection;
(2) KEY interface has correct power connection;
In practice, please connect “+ -” of DC IN to vehicle battery, and KEY to ignition switch or batteries, the details please refer to the below connection
figures.
2. Please make sure that the positive pole of DVR power line connects the positive pole of vehicle batteries with the fuse.
3. There are two kinds of vehicle ignition switch connection: positive and negative connections:
(1) Positive pole ignition switch: ignition switch is connected to the positive pole of vehicle battery and supply high signal (as in Fig 2.4)
(2)Negative pole ignition switch: ignition switch is connected to the negative pole of vehicle battery and supply low signal (as in Fig 2.5)
Fig 2.4 Positive pole ignition switch Fig 2.5 Negative pole ignition switch
2.5.1
Connection for Time-Delay Shutdown
Connect DC+ and DC- to power supply (battery) positive and negative poles, connect KEY interface to
the vehicle ignition switch for DVR function of vehicle ignition startup and time-delay shutdown. There
are two kinds of vehicle ignition switch:
(1) Connection of Positive Pole Switch (Fig 2.6):
Connect the “DC IN +” of DVR to the positive pole of vehicle batteries;
Connect the “KEY +” of DVR to the vehicle ignition switch;
Connect the “GND” and “KEY -” of DVR to the negative pole of vehicle batteries.
Fig 2.6 KEY connect with positive ignition switch