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Control Equipment

Control Equipment Switchers A video switcher enables different cameras to be switched to call-up monitors. In a smaller, cost-conscious applications, a manual switcher allows users to select the camera they want to see by pressing the appropriate button. The most...

Transmission Methods

Transmission Methods The purpose of the transmission medium is to carry the video signal from the camera to the monitor. Today, many video transmission methods exist: coaxial cable, fiber optic, phone lines, microwave, and radio frequency. Due to varying application...

Pan, Tilts and Domes

Pan, Tilts and Domes CCTV cameras can be fixed or have pan, tilt, and zoom (PTZ) capabilities Fixed cameras are mounted on a fixed bracket and cannot move in response to operator commands. PTZ cameras are motor driven and can pan left or right, tilt up or down, and...

Recording Devices

Recording Devices Time-lapse VCRs have been used as a storage medium for some time.VCRs have some drawbacks including, introduction of noise, wear and tear and the simple requirement that the tape needs to be rewound to access information. In a practical situation the...

Monitors

Monitors The monitor receives the transmitted electronic video signal from the camera from the paints it across a monitor to display an image to a viewer. Although similar in function to a TV, a CCTV monitor provides higher lines of resolution (better picture quality)...