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Electronic Test and Measurement Topics



D/A
Transform digital signals to analog.

D/A Converters
Transform digital signals to analog.

DAC
Transform digital signals to analog.

DAQ
Data acquisition hardware will condition a signal (amplify it or filter it for instance) and then convert it to a digital number using an analog-to-digital converter. This digital value is then stored or processed by a computer.

DAQ Software
Data acquisition software is designed to record, store, present and analyze data collected from sensors and other digital devices. (globalspec.com)

DAQ Systems
Sense, log and store information.

DAS
Sense, log and store information.

Data
Any known and/or unknown able to be processed.

Data Acquisition
Data acquisition hardware will condition a signal (amplify it or filter it for instance) and then convert it to a digital number using an analog-to-digital converter. This digital value is then stored or processed by a computer.

Data Acquisition Software
Data acquisition software is designed to record, store, present and analyze data collected from sensors and other digital devices. (globalspec.com)

Data Acquisition Systems
Sense, log and store information.

Data Analysis
Data Analysis Software is used to sort through data in order to identify patterns and establish relationships.

Data Analyzers

Data Communications
The transmission of information.

Data Generators
Create and output test data.

Data Pattern
Produce data patterns for the assurance of logic circuits and digital semiconductors.

Data Recorders
Collect and store data at high rates.

Data Test Sets

Databus
Avionics Databus

Databus Analyzers
Diagnostic tools used to troubleshoot databuses in real-time.

DataCom
The transmission of information.

Datacomm
The transmission of information.

Daylight
Light from the sun.

DC
Direct Current

DC AC Inverters
Provide AC output from a DC source.

DC Current Sources

DC Electronic Loads
The current that results from resistive elements of the load on an output.

DC Hipot

DC Power Supplies
Convert and provide Direct Current (DC) power to a device or group of devices.

DC Shunts
A resistor which delivers a millivolt of DC output in proportion to the current flowing through the resistor.

DC Sources
A highly repeatable and stable DC voltage and current source.

DC/DC Converters
Takes DC input and then provides regulated and/or isolated DC output.

DDR
Double Data Rate memory achieved by reading both the rising and falling edge of clock.

DDS Function Generators
Direct Digital Synthesis Function Generator

Debuggers
Test of computer programs or electronic gear to ferret out errors.

Decoder Test
Check model rail DCC and sound decoders.

Decoders
Make intelligible by descrambling or converting to orginal form coded signals.

DECT
Digital Enhanced Cordless Telecommunications

Defib
Electrically stimulate the heart returning it to normal rhythm.

Defibrillator
Electrically stimulate the heart returning it to normal rhythm.

Delay Generators
The purpose of a digital delay generator is to produce a precise time delay of programmable length. (www.highlandtechnology.com)

Demodulators
a device which extracts an arbitrarily varying information carrying signal from a signal formed by varying a characteristic of a repetitious electrical or electromagnetic wave of less than infrared frequency in accordance with this information carrying signal.

Dense Wavelength Division Multiplexing
Dense Wavelength Division Multiplexing

Depot Level Test
Depot Level Test Systems are designed to perform low level testing of a device. Fault isolation is down to the component level.

Design For Test
Test integrated in a product's design.

Design Verification
Examination of design requirement fulfillment.

Detectors
Register the presence of a stimuli.

Device Programmers
Program non-volatile memories, logic devices, microprocessors and other electrically-programmable devices.

Device Under Test
Printed circuit boards (PCBs) that act as an interface between the DUT and ATE.

DeviceNet
A communication network for industrial controllers and i/o devices.

DFT
Test integrated in a product's design.

DG
The purpose of a digital delay generator is to produce a precise time delay of programmable length. (www.highlandtechnology.com)

DHCP
Dynamic Host Configuration Protocol

Diagnostics
Test routines run to determine errors.

Dielectric Strength Testers
check insulation to assure current does not flow through it.

Dielectric Test
Check of a materials ability to prevent or reduce transmission.

Dielectric Withstand Testers
check insulation to assure current does not flow through it.

Differential Amplifiers
Increase the voltage of multiple input signals to proportionate outputs.

Differential Probes
Measure signals that are not ground referenced.

Digital
A signal of discrete values as opposed to a spectra of values.

Digital Attenuators

Digital I/O
Input/output of digital values.

Digital IC Testers
Automated Test Equipment stations that are specifically designed to test Digital Integrated circuits.

Digital Input-Output
Input/output of digital values.

Digital Multimedia Broadcasting
Digital Multimedia Broadcasting

Digital Multimeters
Electronic measurement instruments that combine multiple functions in a single unit and output information through a digital display, in a numeric value.

Digital Power Meters
Measure the optical, microwave or electrical amounts of energy.

Digital Signal Processor
A microprocessor specifically intended for digital signal processing applications, generally in real-time.

Digital Storage Oscilloscopes
Analyze the waveform of electronic signals, converting the signal to digital information.

Digital Subscriber Line
A method of digitally transmitting data over twisted pair telephone lines, providing Internet access at rates far faster than traditional dial-up.

Digital to Analog Converters
Transform digital signals to analog.

Digital TV
Telecommunications system where transient image and sound are broadcast and received through the use of digital signal.

Digital Voltmeters
Measure voltage, displaying the measurements in numeric value on a digital display.

Digitizers
Convert one value of an analog signal at a particular interval of time into a digital representation.

DIMM
Dual In-line Memory Module.

DIO
Input/output of digital values.

Diode Testers

Dipole Antennas
A bilaterally symmetrical straight antenna fed from the center whose length is equal to one-half of the wavelenght of the operating frequency.

Direct Current
Direct Current

Directional Antennas
Transmit a focused narrow width radio wave.

Directional Couplers

Discrete Test Systems
Check connected individual semiconductor components.

Discrete Testers
Check connected individual semiconductor components.

Discriminators
determine the precise timing of pulse transmission and reception to determine range.

DiSEqC
Digital Satellite Equipment Control

Dish
Receive satellite TV signals.

Dish Antenna
Receive satellite TV signals.

Disk Drive
Store data on magnetic surface plattens.

Display

Display Calibrators

Dissipation Factor
test's dielectric loss to determine quality of insulator.

Dissipation Factor
Ratio of the power loss.

Distance Measurers
Measure the linear space between two points.

Distance Meters
Measure the linear space between two points.

Distortion

Distortion Meters

Disturbance Recorders
Log events and disturbances.

DMB
Digital Multimedia Broadcasting

DMFC
Direct Methanol Fuel Cell

DMM
Electronic measurement instruments that combine multiple functions in a single unit and output information through a digital display, in a numeric value.

DMX
Unidirectional COMM protocol used for stage lighting and effects.

DMX512
Unidirectional COMM protocol used for stage lighting and effects.

DoS
1) To take a service offline. 2) Disk Operating System.

Dosemeters
Measure exposure to harmful radiations.

Dosimeters
Measure exposure to harmful radiations.

Down Converters
Change a higher frequency signal to a lower frequency.

Downconverters
Change a higher frequency signal to a lower frequency.

DR
Collect and store data at high rates.

Drivers
translate general instructions into hardware specfic commands.

DS1
A phone line connection with data rates of 1.544Mbits per second over 24 channels running at 64Kbs.

DS3
672 channels running at 64 Kbps and multiplexed to 43 Mbps

DSL
A method of digitally transmitting data over twisted pair telephone lines, providing Internet access at rates far faster than traditional dial-up.

DSL Test

DSLAM
Combines and routes DSL traffic.

DSO
Analyze the waveform of electronic signals, converting the signal to digital information.

DSP
A microprocessor specifically intended for digital signal processing applications, generally in real-time.

DTMF
Dual-Tone Multi-Frequency signaling.

DTV
Telecommunications system where transient image and sound are broadcast and received through the use of digital signal.

DUT
Printed circuit boards (PCBs) that act as an interface between the DUT and ATE.

DVB
Digital Video Broadcasting

DVB Analyzers

DVB-H
"Digital Video Broadcasting - Handheld", mobile TV format.

DVB-T
Digital Video Broadcasting – Terrestrial.

DVD
Optical disc data storage medium, typically 12 centimeters in diameter, with a capacity of 4.7 Gigabytes.

DVM
Measure voltage, displaying the measurements in numeric value on a digital display.

DVOM
Electronic measurement instruments that combine multiple functions in a single unit and output information through a digital display, in a numeric value.

DWDM
Dense Wavelength Division Multiplexing

Dynamic Signal
Digital processing FFT to reveal properties of a signal.

Dynamometers
Measure an electric motor's speed, torque and power.