Comprehensive AV System Design and Analysis: Practice Flashcards

Flashcards covering key definitions, formulas, and documentation standards for AV system design and analysis based on the provided lecture notes.

Needs analysis

A process that ensures end-users' requirements are accurately identified and addressed at the start of an AV project.

Technical writing skills

The skill most critical for documenting findings accurately during a needs analysis.

Benchmarking

The term describing the comparison of an existing installation with a new project to identify best practices.

Plan view

A drawing that shows a top-down perspective of a space.

Block diagram

An AV system sketch illustrating signal flow between components.

Organizational documentation

Documentation that helps determine project scope by providing stakeholder background.

Executive summary

A summary of client needs and the proposed solution typical for a program report.

UHD resolution

A display resolution of $3840 \times 2160$ pixels.

Decibel ($dB$)

A logarithmic value of a ratio.

IPv4 example

$$192.168.1.100$$

Sensitivity

The loudspeaker specification that defines its efficiency.

As-Built drawings

Drawings used to reflect onsite changes made to original plans during the installation process.

Work breakdown structure (WBS)

A project management tool used to organize and define the total project scope.

Change Order (CO)

A form used to order approved contractual changes.

Schematic drawings

Documentation that shows signal paths and device relationships.

Construction Change Directive (CCD)

A document used of record for safety changes required by a General Contractor (GC).

Project Management Institute (PMP) phases

Initiation, Planning, Execution, Monitoring and Controlling, and Closing.

Maintenance log

A document that records repairs and service work performed on an AV system.

Performance verification

A comprehensive methodology ensuring system readiness and that it performs according to approved design.

Compressor

A technology used to reduce the volume of loud talkers in web meetings.

Spot photometer

A tool used to verify or measure display contrast ratio.

Bill of materials

A comprehensive list of all components needed for an AV project.

80% rule

An electrical planning rule stating only $80$ percent of a circuit's rated capacity should be used.

Ohm's Law for current

$I = V \times R^{-1}$ or $I = V \text{ / } R$.

Electrical power formula

$P = V \times I$.

Sound level meter

A tool used during a site survey to measure ambient sound levels in $dB\text{ }SPL$.

Reflected ceiling plan (RCP)

A top-down reflected drawing showing the locations of ceiling-mounted equipment.

RFI (Request for Information)

A formal document used to seek clarification or additional project information from other trades or contractors.

Opinion of Probable Cost (OPC)

A preliminary cost estimate provided for stakeholders during the planning stages.

200 Rule

A rule used to determine the maximum viewing distance for a display based on the height of the elements being viewed.

RACI Matrix

A document used to assign Responsible, Accountable, Consulted, and Informed roles for project tasks.

DSP (Digital Signal Processor)

A device used to process, route, and optimize audio signals within a system.

VLAN (Virtual Local Area Network)

A logical separation of network traffic used for security and performance in networked AV systems.

Cardioid

A microphone pickup pattern designed to minimize room noise by being most sensitive to sound from the front.

Redundancy

A reliability concept describing a system designed to continue operating after a component failure.

$$1.78:1$$

The aspect ratio of HDTV expressed in its lowest terms.

$$10\text{ octaves}$$

The number of octaves between $20\text{ }Hz$ and $20\text{ }kHz$.

$$5:1$$

The minimum load safety rating required for AV mounting hardware.

$$0.775\text{ volts}$$

The reference voltage for $0\text{ }dBu$.

$$169.254.x.x$$

An IP address that indicates a computer failed to receive an address from a DHCP server.

Gain structure

The organization of signal levels; improper setup is a primary cause of audible hiss in audio systems.

EDID management

The process of ensuring compatible resolution and signal communication between video sources and displays.

Redline drawings

Drawings used to communicate installation deviations discovered during the construction process.