Electronic Test and Measurement Topics

Topics beginning with "D"
D-Level Test

diagnosis faults down to the component level.

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

diagnosis faults 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

illuminates image signaling.

Display Calibration

reference a test pattern to adjust by.

Display Calibrators

reference a test pattern to adjust by.

Dissipation Factor

test's dielectric loss to determine quality of insulator.

Distance Measurers

Measure the linear space between two points.

Distance Meters

Measure the linear space between two points.

Distortion
Distortion Meters

measures an added circuit's distortion to the original signal.

Distortionmeters

measures an added circuit's distortion to the original signal.

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.

DMX-512

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

DVB-T

Digital Video Broadcasting – Terrestrial.

DVB-T/H

Digital Video Broadcasting - Handheld

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.