Electronic Test and Measurement Topics

Topics beginning with "V"
Vacuum Chambers

Evacuate air simulating low atmospheric pressure at different elevations.

Vacuum Fixtures

actuate UUT typically PCB to bed of nails.

Validators

Assure standards are met.

Variable Attenuators

Provide changeable resistance values.

Variable Optical Attenuators

Adjust the power of an optical signal.

Varistor

A non-ohmic voltage-dependent resistor whose resistance is low when magnitude of voltage is high.

VC

Changes the voltage of a source.

VCSEL

a semiconductor laser diode with light emmission perpendicular from top surface.

VDE

Verband der Elektrotechnik

VDSL

Very High-Speed Digital Subscriber Line

Vector

Value having both magnitude and direction.

Vector Network Analyzers

measure the amplitude and phase characteristics of electric networks.

Vectorscopes

Visualize the chrominance of a video signal.

Vector Signal Analyzers

Is like a spectrum analyzer with the addition of demodulation functions.

Vector Signal Generators

Output complex waveforms.

Vehicle

a means of conveyance.

Vehicle Diagnostics

Check a vehicle's components and sub systems.

Vehicle Electronics

Discipline for TOTAL ground vehicle electrical/electronics system integration. http://www.tacom.army.mil/tardec/vetronics/vethome.htm

Velocimeters

Measure the speed and direction of fluids.

Velocity

Motion per unity of time.

Vertical Cavity Surface Emitting Lasers

a semiconductor laser diode with light emmission perpendicular from top surface.

Very Large Scale Integration

> 100,000 < 1,000,000 electronic components per chip

Vetronics

Discipline for TOTAL ground vehicle electrical/electronics system integration. http://www.tacom.army.mil/tardec/vetronics/vethome.htm

VFL

Apply light to optical fibers, enabling visual inspection to determine integrity.

VHDL

VHSIC Hardware Description Language

VHF

Very High Frequency operating at 30 MHz to 300 MHz.

VHF Omnidirectional Radio Range

navigation system that detemines position by vectoring fixed ground radio beacons.

Vibrating Sample Magnetometers

measure a material's hysteresis, anistropy, torque and polar kerr properties.

Vibration

mechanical oscillation of a particle or solid.

Vibration Analyzers

Perform conversions of Amplitude vs. Time to Amplitude vs. Freq. (Spectrum Analysis) (www.impactengineering.com/1-services4b.html)

Vibration Calibration

for acceleration, velocity, frequency and displacement calibration.

Vibration Calibrators

for acceleration, velocity, frequency and displacement calibration.

Vibration Control

A hardware/software product that generates one or more analog drive signals that are applied to a customer's amplifier / shaker / test device for the purpose of creating a specified vibration environment at one or more points on a test device. (dataphysics.com)

Vibration Exciters

Vibration reference source.

Vibration Isolation

Control of unwanted vibration so that its adverse effects are kept within acceptable limits. (www.sdp-si.com)

Vibration Meters

Measure mechanical oscillations acceleration, velocity, and displacement.

Vibration Monitors
Vibration Sensors

Sensors used for measuring, displaying and analyzing linear velocity, displacement and proximity, or else acceleration. They can be used on a stand-alone basis, or in conjunction with a data acquisition system. (sensors-transducers.globalspec.com)

Vibration Test
Vibrometers

Measure vibration.

Video

imaging in sequence representing a moving scene.

Video Analyzers

Analyze a video signal's amplitude, amplitude overshoot, and other signal attributes.

Video Inspection

Evaluation of an object through the analysis of video representation.

Video Microscopes

Imaging of small target areas.

Video Pattern Generators

Measure the performance of imaging processing.

Video Signal Generators

provide video and/or television waveforms for use in analysis of devices that employ a video signal.

Video Surveillance

Remote visual monitoring to detect behavior outside norm.

Video Switching

The routing of video signals.

Video Test

instruments which test the video stream.

Virtual Instruments

Modular measurement hardware whose functional is user defined.

VISA

Virtual Instrument Software Architecture.

Viscometers

measure a liquid's resistance to flow.

Viscosimeters

measure a liquid's resistance to flow.

Vision

To see vividly.

Vision Sensors

An image sensor combined with a processor for base visual acuity.

Vision Software
Vision Systems

Optically discern environments.

Visual Basic

A programming language and environment that allows rapid creation of user interfaces by dragging and dropping elements such as buttons and controls.

Visual Fault Finders

Apply light to optical fibers, enabling visual inspection to determine integrity.

Visual Fault Locators

Apply light to optical fibers, enabling visual inspection to determine integrity.

Visual Laser Sources

Apply light to optical fibers, enabling visual inspection to determine integrity.

VITA 46

high speed bus plane connector rated at 6.25 Gbps.

VLAN

virtual LAN

VLF

frequency operates at 3–30 kHz.

VLSI

> 100,000 < 1,000,000 electronic components per chip

VME

VERSAmodule Eurocard bus

VME64

VME64 is an expanded version of the VersaModule Eurocard bus (32-bit data handling) that provides 64-bit data transfer and addressing. (webopedia.com)

VME Backplanes
VMEbus

VERSAmodule Eurocard bus

VME Carriers
VME Chassis
VNA

measure the amplitude and phase characteristics of electric networks.

VOA

Adjust the power of an optical signal.

Voice Quality Testing

Examine spoken sound quantitatively.

VoIP

An application that encodes and digitizes a voice signal, converts the signal to data packets, and transports the packets over a data network running Internet protocol (IP). (www.intel.com)

VoIP Test
Voltage

The tension of an electromotive force.

Voltage Calibrators

An accurate voltage units of measure to facilitate comparison to and adjustment of instruments.

Voltage Converters

Changes the voltage of a source.

Voltage Detectors

Sense the presence and amount of electrical current.

Voltage Dividers

Circuit whose output voltage is a fraction of it's input voltage.

Voltage Indicators

1) Digital Voltage Indicator. 2) Digital Visual Interface, is a standard for a uniform connector that can handle both digital and video signals.

Voltage Loggers

Record voltage measurements.

Voltage Sensors
Voltage Sources

A precise voltage standard.

Voltage Testers
Voltmeters

Measure differences in voltage.

Volt Meters

Measure differences in voltage.

Volt-Ohm Meters

A Voltmeter, Ohmmeter, and Milliammeter; multimeter.

VOM

A Voltmeter, Ohmmeter, and Milliammeter; multimeter.

VOR

navigation system that detemines position by vectoring fixed ground radio beacons.

VPG

Measure the performance of imaging processing.

VPW

Variable Pulse Width modulation

VPX

high speed bus plane connector rated at 6.25 Gbps.

VQT

Examine spoken sound quantitatively.

VSB

Vestigial SideBand

VSG

Output complex waveforms.

VSM

measure a material's hysteresis, anistropy, torque and polar kerr properties.

VSWR

Voltage Standing Wave Ratio.

VU Meters

Measure in "Volume Units" audio strength levels.

VXI

VME eXtensions for Instrumentation bus

VXI Backplanes

A VXI compliant electronic circuit board containing circuitry and sockets into which additional electronic devices or other circuit boards or cards can be plugged. (www.dothill.com)

VXIbus

VME eXtensions for Instrumentation bus

VXI Chassis
VXI Controllers
VXI Mainframes
VXI Multiplexers
VXI Switching