26 en | Hardware setup Divar 700 Series
F.01U.246.471 | v3.4 | 2011.06 Installation and Operation manual Bosch Security Systems
4.4 Camera connections
On hybrid units, connect cameras to the Video in connectors on the back of the unit using
75 ohm video coaxial cables with BNC connectors. Optionally, this signal can be looped
through to other equipment via the corresponding Video out connector. The camera input
connectors are auto-terminating. There is no need to add a terminator to the output
connector if no additional equipment is connected.
If the camera signal is looped-through to additional equipment, make sure that the end of the
video connection is terminated with 75 ohm termination.
The unit automatically configures itself as a PAL or NTSC unit. The unit determines the
standard by detecting the signal format of the first connected camera (lowest camera input
number).
On network units, or hybrid units with no analog cameras connected, the detection process
fails and the recorder configures itself as a PAL unit. In this case, no video is visible on an
NTSC monitor.
To change this behaviour select a preferred video mode during start-up.
– For PAL, press the monitor and camera 1 buttons simultaneously for ten seconds during
power-up.
– For NTSC, press the monitor and camera 2 buttons simultaneously for ten seconds
during power-up.
The unit retains these manual settings on subsequent start-ups.
Specifications
Input signal: Composite video 1 Vpp, 75 ohm
Color standard: PAL/NTSC, auto-detect
Gain control: Automatic or manual gain control for each video input
Connector type: BNC looped-through, automatic termination
Figure 4.5 Eight video inputs with loop-through outputs
Video in
Video out
1234
1234
5678
5678
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