ZMODO ZMD-DT-SCN4 - Manual (Page 12)

H.264 Super Digital Video Recorder User Manual
11
port are mutually exclusive, only one interface is effective at the same time. USB at the bottom of rear
panel is independent and effective.
2.5 Installation connections sketch map (16CH DVR as an example the following, please
prevail in kind).
Picture 2.1 Installation connections sketch map
2.6 Audio and video input and output connections
2.6.1 Video input connections
A. Analogue video signal: The video input port is BNC connector plug. The demand of input signal
is PAL/NTSC BNC (1.0V
P-P
, 75 Ω).
The video signal must be accorded with the state standard which has the high signal to noise ratio,
low aberration and low interference. The image must be clear and has natural color in the appropriate
brightness.
B. Network HD video signal: The network HD video input port is RJ45 port, this signal comes from
other network video device (such as IPC or other DVR). And it needs to be configured in Mode shift and
Number channel item.
Insure the camera signal stable and credible
The camera should be installed in the appropriate location where is away from backlighting and
low illumination or adopts the better backlighting and low illumination compensation.
The ground and power supply of the camera and the DVR should be shared and stable.
Insure the transmission line stable and credible
The video transmission line should adopt high quality coaxial pair which is chosen by the
transmission distance. If the transmission distance is too far, it should adopt shielded twisted pair, video
compensation equipment and transmit by fiber to insure the signal quality.
The video signal line should be away from the electro magnetic Interference and other equipments