SerVision CVG-M Installation Manual - Connecting Cameras
SerVision
CVG-M Installation Guide
Connecting Devices to the CVG-M
13
Connecting Devices to the CVG-M
This section explains how to connect devices such as cameras or a sensor to the CVG-M unit.
NOTE: If you are connecting devices to a CVG-M in a vehicle, make sure that all the devices are designed to
function properly under mobile conditions (temperature range, vibrations, power supply, etc), that they
are all installed in accordance with their manufacturer's requirements, and that the devices and all
cables are properly installed and firmly fastened so that they will not become dislodged when the
vehicle moves. It is highly recommended to consult vehicle experts before installing external devices.
Connecting Cameras
Up to two cameras can be connected to the CVG-M. If the cameras have PTZ controls for remote aiming and
zooming, and the PTZ protocol they use is supported, the control cables can also be connected to the unit.
Any PAL or NTSC video camera with a composite video output can be connected to the unit. A cable with a
composite video connector on one end, and a male BNC connector on the other, should be used to connect each
camera to the CVG-M.
Cameras that are connected to the CVG-M can receive their power from the CVG-M unit through the 12VDC
Power Out connector on the rear panel of the unit. However, bear in mind that the unit can supply a maximum of
250 mA (3W) of power through this connector. Typically, this is only enough power for one camera. If the devices
connected to the unit require more than this amount of power, you must power some or all of them independently
by connecting them directly to a power source, as explained under Supplying Power to Devices Connected to the
Unit, page 10.
To connect a camera:
1. Install the camera in its desired location.
2. Connect the output of the camera to one of the Video In connectors on the unit.
3. Connect the camera's power connector to a power source.
Connecting a PTZ Controller
If a camera has remote PTZ control features (pan, tilt, zoom, and/or focus), and uses a supported PTZ protocol, you
can connect the control cable to the unit. Both RS232 and RS485 PTZ connection types are supported. Consult the
camera documentation for information about which connection type to use.
If you want to connect the PTZ controllers of two cameras to the unit, only one of the controllers can use an RS232
connector – the other must use an RS485 connector. PTZ controllers for more than one RS232 camera cannot be
connected to the unit simultaneously.
NOTE: A cable with a male RCA connector can be connected to a female BNC connector by using an RCA-
to-BNC adaptor.
Figure 7: RCA -to-BNC adaptor