AVIXA CTS Exam Guide (Third Edition) Glossary Exam Questions with Correct Solutions|
Latest Update Graded A+
Viewing Area Plan A plan-view drawing of the viewing environment that identifies 5 viewing
locations as defined in the requirements section of the ANSI/INFOCOMM 3M-2011 Standard,
Projected Image System Contrast Ratio
Viewing Cone The volume of space containing the audience viewing a display. The term
cone is used because there is width, height, and depth to the viewing space, which emanates
from the center of the display
Virtual Local Area Network (VLAN) A type of network created when network devices on
separate LAN segments are linked to form a logical group, thereby spanning the logical LANs to
which they are connected. For instance, the LANs at each branch of a company could be
combined into one company-wide VLAN
Virtual Private Network (VPN) A virtual point-to-point private connection established across
a public network via an encryption tunneling protocol. VPNs are used for secure remote
monitoring, troubleshooting, and control
Visual Acuity The eye's ability to discern fine details. There are several different kinds of
acuity, including resolution acuity, which is the ability to detect that there are 2 stimuli, rather
than one, in a visual field, and recognition acuity, which is the ability to indentify correctly a
visual target, such as differentiating between a G and a C
Voice over Internet Protocol (VoIP) A suite of technologies and protocols that allow the
transmission of telephone calls and multimedia over internet protocol (IP) networks
Volt The basic international unit of potential difference or electromotive force. It is
represented by the symbol V
Voltage The electrical potential difference across a circuit
,Watt The measurement of the amount of power consumed by a system. It is represented by
the symbol W
Waveform Monitor An oscilloscope-type monitor used to monitor the waveforms of signals.
A video waveform monitor is a specialized monitor used to display and analyze a video signal's
sync, luminance, and chroma levels. Some waveform monitors include a vectorscope mode
Wavelength The distance between 2 corresponding points of 2 consecutive cycles measured
in meters
Wayfinding The use of audiovisual guides or signage to assist with navigation to a
destination
Webcasting Allows the braodcast of digital media such as audio or video over the Internet,
which audience members can stream live or access on demand. Essential equipment for
webcasting includes computers, streaming servers, production software, recording gear,
appliances, and more
White Noise A signal with a broad spectrum of random frequencies at the same energy level
Wide Area Network (WAN) A data communications network that links local area networks
(LANs) that are distributed over large geographic areas, such as cities, states, countries and
regions
Wire A single conductive element intended to carry a current
Wireless Access Point A network device that allows other devices to access a wireless
network
,Wireless Local Area Network (WLAN) A network that shares information by radio frequency
(RF) wireless transmission
Woofer A loudspeaker that produces low frequencies, typically 20 Hz to 200 Hz
Work Breakdown Structure (WBS) A deliverable-oriented grouping of project elements that
will ultimately organize and define the total scope of the project. Each descending level
represents an increasingly detailed definition of a project component
XLR Connector A secure, low-voltage connector used in professional audiovisual systems.
The 3-pin version is the standard audio signal cable for the production and AV industries. The 4-
pin version is widely used for communication headsets and the 5-pin version is the standard
connector for the DMX512 digital lighting protocol. Also known as a Cannon connector
Zone A defined area within a system. In the context of lighting, a zone is a grouping of
luminaires (lighting fixtures) that are focused on the same area. In the context of digital
signage, a zone is an area where specific content may be placed. In the context of audio, a zone
is an area where the same program is delivered
1/3 Octave Equalizer A graphic equalizer that provides 30 or 31 slider adjustments
corresponding to specific fixed frequencies with fixed bandwidths, with the frequencies
centered at every 1/3 of an octave. The adjustment points shape the overall frequency
response of the system
4K An ultra-high-resolution video format with a resolution approximately 4 times that of full
HD (1920x1080 pixels). 4K formats include 3840x2160 pixels (UHDTV) and 4096x2160 pixels
(digital cinema, DCI)
8K An ultra-high-resolution video format with a resolution of 7680x4320 pixels, which is 16
times the resolution of full HD 1920x1080 pixels
, 9-Pin Connector The DB 9 is the most common type of connector used in RS-232 control
systems
Acceptable Viewing Area The viewing range for a screen; suggested as a 60-degree arc of
the far vertical edge of the screen being viewed
Access Point A network device that allows other devices to connect to a network
Acoustic Echo Canceller Used in conferencing systems. The echo canceller attempts to
remove environmental echoes that are created at the far side from sound reflected off hard
surfaces and returned to conferencing microphones
Acoustics The properties or qualities of a room or building that determine how sound is
transmitted and reflected in it. The study of the properties of sound
AES Audio Engineering Society
Allied Trade A business that collaborates with AV professionals to complete a project
Alternating Current (AC) An electrical current that reverses its direction periodically
Ambient Light The sum of all lighting in an area
Ambient Noise The sum of all sounds in an area
Amperage The amount of electric current flowing in a circuit. Current is measured in
amperes (amps), abbreviated as A
Latest Update Graded A+
Viewing Area Plan A plan-view drawing of the viewing environment that identifies 5 viewing
locations as defined in the requirements section of the ANSI/INFOCOMM 3M-2011 Standard,
Projected Image System Contrast Ratio
Viewing Cone The volume of space containing the audience viewing a display. The term
cone is used because there is width, height, and depth to the viewing space, which emanates
from the center of the display
Virtual Local Area Network (VLAN) A type of network created when network devices on
separate LAN segments are linked to form a logical group, thereby spanning the logical LANs to
which they are connected. For instance, the LANs at each branch of a company could be
combined into one company-wide VLAN
Virtual Private Network (VPN) A virtual point-to-point private connection established across
a public network via an encryption tunneling protocol. VPNs are used for secure remote
monitoring, troubleshooting, and control
Visual Acuity The eye's ability to discern fine details. There are several different kinds of
acuity, including resolution acuity, which is the ability to detect that there are 2 stimuli, rather
than one, in a visual field, and recognition acuity, which is the ability to indentify correctly a
visual target, such as differentiating between a G and a C
Voice over Internet Protocol (VoIP) A suite of technologies and protocols that allow the
transmission of telephone calls and multimedia over internet protocol (IP) networks
Volt The basic international unit of potential difference or electromotive force. It is
represented by the symbol V
Voltage The electrical potential difference across a circuit
,Watt The measurement of the amount of power consumed by a system. It is represented by
the symbol W
Waveform Monitor An oscilloscope-type monitor used to monitor the waveforms of signals.
A video waveform monitor is a specialized monitor used to display and analyze a video signal's
sync, luminance, and chroma levels. Some waveform monitors include a vectorscope mode
Wavelength The distance between 2 corresponding points of 2 consecutive cycles measured
in meters
Wayfinding The use of audiovisual guides or signage to assist with navigation to a
destination
Webcasting Allows the braodcast of digital media such as audio or video over the Internet,
which audience members can stream live or access on demand. Essential equipment for
webcasting includes computers, streaming servers, production software, recording gear,
appliances, and more
White Noise A signal with a broad spectrum of random frequencies at the same energy level
Wide Area Network (WAN) A data communications network that links local area networks
(LANs) that are distributed over large geographic areas, such as cities, states, countries and
regions
Wire A single conductive element intended to carry a current
Wireless Access Point A network device that allows other devices to access a wireless
network
,Wireless Local Area Network (WLAN) A network that shares information by radio frequency
(RF) wireless transmission
Woofer A loudspeaker that produces low frequencies, typically 20 Hz to 200 Hz
Work Breakdown Structure (WBS) A deliverable-oriented grouping of project elements that
will ultimately organize and define the total scope of the project. Each descending level
represents an increasingly detailed definition of a project component
XLR Connector A secure, low-voltage connector used in professional audiovisual systems.
The 3-pin version is the standard audio signal cable for the production and AV industries. The 4-
pin version is widely used for communication headsets and the 5-pin version is the standard
connector for the DMX512 digital lighting protocol. Also known as a Cannon connector
Zone A defined area within a system. In the context of lighting, a zone is a grouping of
luminaires (lighting fixtures) that are focused on the same area. In the context of digital
signage, a zone is an area where specific content may be placed. In the context of audio, a zone
is an area where the same program is delivered
1/3 Octave Equalizer A graphic equalizer that provides 30 or 31 slider adjustments
corresponding to specific fixed frequencies with fixed bandwidths, with the frequencies
centered at every 1/3 of an octave. The adjustment points shape the overall frequency
response of the system
4K An ultra-high-resolution video format with a resolution approximately 4 times that of full
HD (1920x1080 pixels). 4K formats include 3840x2160 pixels (UHDTV) and 4096x2160 pixels
(digital cinema, DCI)
8K An ultra-high-resolution video format with a resolution of 7680x4320 pixels, which is 16
times the resolution of full HD 1920x1080 pixels
, 9-Pin Connector The DB 9 is the most common type of connector used in RS-232 control
systems
Acceptable Viewing Area The viewing range for a screen; suggested as a 60-degree arc of
the far vertical edge of the screen being viewed
Access Point A network device that allows other devices to connect to a network
Acoustic Echo Canceller Used in conferencing systems. The echo canceller attempts to
remove environmental echoes that are created at the far side from sound reflected off hard
surfaces and returned to conferencing microphones
Acoustics The properties or qualities of a room or building that determine how sound is
transmitted and reflected in it. The study of the properties of sound
AES Audio Engineering Society
Allied Trade A business that collaborates with AV professionals to complete a project
Alternating Current (AC) An electrical current that reverses its direction periodically
Ambient Light The sum of all lighting in an area
Ambient Noise The sum of all sounds in an area
Amperage The amount of electric current flowing in a circuit. Current is measured in
amperes (amps), abbreviated as A
