Audio/Video Systems Installation Flashcards

When installing outdoor speakers, which IP (Ingress Protection) rating is the minimum recommended for a speaker exposed to rain and splashing water?

Answer: IP65

IP65 provides complete dust protection and protection against water jets from any direction, making it the minimum practical rating for rain-exposed outdoor speakers.

A customer wants to control all AV equipment from a single touch panel. Which system type should be installed to accomplish this?

Answer: A control system processor (e.g., Crestron or AMX)

A control system processor integrates with all AV devices and the touch panel to provide unified, programmable control of the entire system.

What is the correct method for dressing and managing cables inside an equipment rack to ensure airflow is not obstructed?

Answer: Route power and signal cables on opposite sides of the rack and use velcro ties

Routing power cables on one side and signal cables on the other minimizes interference and EMI, while velcro ties prevent crushing that could damage cable insulation.

Which audio term describes the buildup of excessive sound energy in a room caused by parallel reflective surfaces, creating a series of repeating echoes?

Answer: Flutter echo

Flutter echo is a rapid repetitive echo that occurs between two parallel, hard, reflective surfaces when a sharp sound is produced.

When setting up a matrix switcher for an AV system, what is the key functional difference between a matrix switcher and a standard A/V switcher?

Answer: A matrix switcher can route any input to any output simultaneously and independently

A matrix switcher allows any input source to be routed to any combination of outputs at the same time, unlike a basic switcher that connects one input to all outputs.

What is the recommended minimum bend radius for RG-6 coaxial cable during installation to prevent signal degradation?

Answer: 6 times the cable diameter

RG-6 coaxial cable should not be bent to a radius smaller than 6 times its outer diameter to prevent damage to the dielectric and maintain impedance.

A technician is installing a video wall using multiple displays. What device is required to split and scale a single video source to fill all panels correctly?

Answer: A video wall processor/controller

A video wall processor takes one or more source signals and scales, crops, and distributes the image across multiple panels so they form a seamless unified display.