X986-05-00 Rev 1002 Roughneck V900 Dome Cameras
Installation
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Figure 5
Cable Preparation
Camera Power Connections
Note:
Vicon systems and components, like most electronic equipment, require a clean, stable power source.
Voltage irregularities such as surges, drops, and interruptions can affect the operation of your equipment
and, in severe cases, damage certain components. Vicon strongly recommends the use of line
conditioners, voltage regulators, and uninterruptible power supply (UPS) systems.
Caution:
Roughneck V900 series cameras are "electrically" non-isolated. This means that the AC power
input and the video output share a common ground connection. This common ground can cause the
electrical phenomenon of ground looping. "Ground loops" only occur on "multiple camera
installations" where a difference of ground potential exists between cameras, causing a base
frequency (50 Hz/60 Hz) distortion on the video signal. It affects the video by causing horizontal line
distortion, more commonly known as "hum bars".
To eliminate ground loops on multi-camera installations, Vicon suggests the following in an installation:
Use an electrically-isolated, multiple-channel power supply. This supply type provides a separate output for each
camera. These power supplies are available in several voltage and channel configurations.
Use a single-channel AC power supply for each camera. This power supply will provide the correct voltage and
electrical isolation for one camera.
Use a 1:1 voltage isolation transformer for each camera. This type of transformer is connected to an existing AC
power source and provides an isolated power source for the camera.
Summary of Contents for roughneck V900
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