Installation guide

SerVision CVG Installation Guide
Connecting Devices to the CVG 9
Connecting Devices to the CVG
This section explains how to connect devices such as a camera or a sensor to the CVG unit.
Connecting Cameras
Up to two cameras can be connected to the CVG. 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.
Cameras that are connected to the CVG can receive their power from the CVG 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 8.



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.
NOTE: If you are connecting sensors to the unit using an ADAM module or you are using the RS232/485
connector to connect a touchscreen CCTV monitor to the unit, you cannot connect any RS232 PTZ
controllers. For additional information, see Connecting Sensors Using an ADAM Module, page 12;
Connecting a CCTV Monitor, page 18.
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 3: RCA-to-BNC adaptor