CTS Study Guide 2026

White balance ensures the camera renders the room's color temperature correctly. Under tungsten lighting (2,700–3,200K) without white balance, an image appears orange; under fluorescent lighting (4,000–5,000K), it may appear green. Manual white balance using a reference card under actual room lighting gives the most accurate result.

Composite video is an analog video signal format that combines all video information—luminance (brightness) and chrominance (color, or hue and saturation)—into a single signal. This combined signal is then transmitted over a single cable, which can lead to some signal degradation due to the intermingling of information. It was a common standard before the advent of separate component signals.

Screen gain measures how much light a projection screen reflects relative to a Lambertian (perfectly diffuse) surface; a gain above 1.0 concentrates reflected light toward the audience.

A block diagram visually maps how signals travel between devices, making it essential for design review and troubleshooting.

mDNS (Multicast DNS) with Bonjour/Zeroconf enables automatic device discovery and addressing on a local network without a DHCP server.

With low ceilings and a large display, mounting height is constrained, and the top edge may exceed comfortable viewing angles for occupants in rear rows.