Electronic Test and Measurement Topics

Topics beginning with "S"
SA

Frequency-selective, peak-responding voltmeters, which are calibrated to display the rms value of a sine wave.

Safety Jacks

Socket whose insulating jacket meets safety standards.

Safety Test

Check to determine whether a device is free from hazards.

Sampling Oscilloscopes

Sample signals prior to any amplification or attenuation.

SAN

Storage Area Network

SAR

watts per kilogram of absorbed electromagnetic radiation.

SAS

Capable of addressing 16,256 devices with a data tranfer rate of up to 3Gbps.

SATA

A computer bus transferring data (typically from a disk drive) at 1.5 or 3.0 Gbit/s.

Satellite

any smaller object traveling around a larger object.

Satellite Dish

Receive satellite TV signals.

Satellite Emulators

Test satellite modem performance and to ground link. Satellite Simulators

Satellite Finders

Measure satellite signal levels to focus sighting angle.

Satellite Signal Level Meters

Detect, measure, and monitor satellite signal.

Satellite Simulation

provide the functionality to test satcom.

Satellite Simulators

provide the functionality to test satcom.

Sat Locators

Measure satellite signal levels to focus sighting angle.

SBC

Whole computer on one PCB.

SCADA

Supervisory Control And Data Acquisition

Scalability

The ability to handle or expand to handle ever greater loads.

Scalar Network Analyzers

Measure the amplitude properties of electrical networks.

Scan Converters

Transform scan rates of a signal to another format.

Scanners

Looks for and detects signals.

Scanning Electron Microscopes

surface imaging from 1 to 5 nm in size.

Scanning Electron Microscopy

surface imaging from 1 to 5 nm in size.

Scanning Probe Microscopes

Used to study the properties of surfaces at the atomic level. (www.eng.yale.edu)

Scintillation Detectors

absorb ionizing radiation and convert a small part of their energy into light for photodetection.

Scopes

view and examine voltage and current or a UUT's physical characteristics.

SCPI

A standard interface language between computers and test intruments.

SCR

Thyristor, Silicon Controlled Rectifier

Screwdrivers

Combine screwdriver, voltage detector and/or continuity tester into one.

Screw Drivers

Combine screwdriver, voltage detector and/or continuity tester into one.

Scripting

are a sequence of executable instructions.

Scripts

are a sequence of executable instructions.

SCSI

"Small Computer System Interface" defines a communication standard for connecting peripheral devices and thier controllers to a microprocessor.

SCSI Test
SCTP

Stream Control Transmission Protocol

SCXI

proprietary mulitfunction bus and signal conditioning standard developed by NI.

SD Card

A non-volatile memory card format.

SDH

Synchronous Digital Hierarchy carries bit rates of 2/34/140 Mbps over fiber.

SDI

A family of digital video interfaces standardized by SMPTE.

SDRAM Test

Synchronous Dynamic Access Memory.

SDTV

Digital broadcast with a resolution close to analog TV.

Sea

< than an ocean.

SECAM

"Sequentiel Couleur avec Mémoire" television system standard first developed by the French.

Secondary Injection Test

Low voltage signal injected to test circuit breaker operation.

Secondary Service

service line voltage < 600 volts.

Security

to make safe.

Seismic

earthquaking event with a wave velocity 3-8 km/s.

Seismic Accelerometers

sense ground vibration.

Seismographs

measure ground movements.

Seismometers

measure ground movements.

SEM

surface imaging from 1 to 5 nm in size.

Semi

active or passive elements connected as an electronic circuit using a crystalline subtance, eg. silicon or germanium.

Semicon

active or passive elements connected as an electronic circuit using a crystalline subtance, eg. silicon or germanium.

Semiconductor

active or passive elements connected as an electronic circuit using a crystalline subtance, eg. silicon or germanium.

Semi-conductor

active or passive elements connected as an electronic circuit using a crystalline subtance, eg. silicon or germanium.

Semiconductor Test

..test and check high power diodes, thyristors, IGBT's and other similar devices. (www.fastron.com.au)

Sensors

detect a physical event then translate to a representative analog signal.

Sensor Testers
Serial

a bus that can be used with almost any device transmitting a single stream of data.

Serial Analyzers

monitor and analyze serial buses.

Serial ATA

A computer bus transferring data (typically from a disk drive) at 1.5 or 3.0 Gbit/s.

Serial Attached SCSI

Capable of addressing 16,256 devices with a data tranfer rate of up to 3Gbps.

Serial Digital Interfaces

A family of digital video interfaces standardized by SMPTE.

Serial Interfaces

one conductor one bit at a time data transfer.

Serial I/O

Sequential input and output of data.

Servers

Computer devices that process and satisfy requests for network services.

Server Test
Services

Professional assistance to test opportunities.

Servo

feedback seving to control.

Servomotor

feedback seving to control.

Servo Test
Set-top Box

Convert broadcast signal to TV content.

Shakers

create vibrations of various frequencies and intensities.

SHDSL

Single-pair high-speed digital subscriber line

SHF

Super High Frequency from 3 GHz to 30 GHz.

Shielded Box

a space surrounded by an electromagnetic radiation barrier

Shielded Enclosures

A space surrounded by an electromagnetic radiation barrier

Shielding

Protects against or confines electromagnetic or ionizing radiation.

Shock

A shock test transmits kinetic or thermal energy into a UUT in a relatively short interval in a controlled enviroment.

Shoe

ground a person to prevent ESD damage. 2) check footwear for electrical shock resistance.

Shooter

fire's gun.

Shooter Detection

acoustic localization of gunfire

Shooter Localization

acoustic localization of gunfire

Short Finders

A short locator is used to identify unintentional connections in electric circuits.

Short Locators

A short locator is used to identify unintentional connections in electric circuits.

Short Testers

Detect unintended circuit connectivity and insulation defects.

Shunts

An Instrument Shunt is a resistor connected in parallel with a measuring device to move the current range beyond a particular value for which the instrument is capable of measuring directly.

SIGINT

SIGnal INTelligence

Signal

detectable impulse of electromagnetic radiation or quantum state superposed.

Signal Analyzers

demodulate and analyze signals.

Signal Conditioners

Circuitry that offsets, attenuates, amplifies, linearizes, and/or filters the signal to a A/D converter.

Signal Conditioning

The processing of signals to reduce noise level, amplify, attenuate, or otherwise condition.

Signal Conditioning eXtensions for Instrumentation

proprietary mulitfunction bus and signal conditioning standard developed by NI.

Signal Conditioning Systems
Signal Generators

Generate repeating analog or digital electronic signals.

Signaling

The use of signals for controlling communications. (atis.org)

Signal Level Meters

detect, measure, and monitor power or the intensity of a signal.

Signal Meters

Detect, measure, and monitor impulses of electromagnetic radiation.

Signal Sources

Instrument that provides a stimulus signal (waveform). (www.tek.com)

SIGTRAN

Signaling Transport Protocol Stack

Simulation

The approximation of actual operational conditions.

Simulation Software

computer programs that emulate the function of a system, predict expected performance, evaluate the impact, and assess design alternatives.

Simulators

create what could be.

SINAD

Signal Including Noise Distortion

Single Board Computers

Whole computer on one PCB.

Singlemode Fiber

Support's one mode of light propagation with a 3-10µm core used for long distance and high speed laser sources.

Single Phase

A single alternating voltage.

SIP

Session Initiation Protocol

Sleeve

insulated wrist to shoulder HV protection.

SLM

detect, measure, and monitor power or the intensity of a signal.

SLT

A check of a groups interdependency, interrelations and interaction as a whole.

Small Arms Fire

acoustic localization of gunfire

SmartCard

Embedded circuits on a card that store and process data. Europay, MasterCard and Visa.

Smart Card

embedded circuits on a card that store and process data.

Smartcard Testers
SMPS

Load Current is oscillated on and off regulating ouput voltage.

SMPTE

Society of Motion Picture and Television Engineers.

SMT

"Surface Mount Technology" printed circuit board testing.

SMTP

Simple Mail Transfer Protocol

SNA

Measure the amplitude properties of electrical networks.

Sniffer

Decodes each packet of a data stream to check adherence to spec.

SNMP

Simple Network Management Protocol

SNMP Test

The simple network management protocol

SO2

Sulfer Dioxide

SoC

A complete computer "System on a Chip".

Socket Testers

test access viability to electricity, gas or data.

SOFC

solid oxide fuel cell.

Softness

describes how yielding a material is to pressure, touch for example.

Software

a set of instructions to run hardware and or process data.

SOIC

Small Outline Integrated Circuit

Soil Resistivity

Affects the depth to set a grounding rod.

Solar

energy of the sun's rays.

Solar Cell

Convert light to electricity.

Solar Energy

power from the sun.

Solar Simulation

replicate the sun's light.

Solar Simulators

replicate the sun's light.

Solder Joint
Solder Paste
Solenoid

Act as a magnet when current flows through moving an iron core.

Solid Oxide Fuel Cell

solid oxide fuel cell.

Sonar

SOund Navigation And Ranging

SONET

Synchronous Optical NETwork is a standard for digital communication over optical fiber.

Sorters

A physical piece of equipment or a software program with the sole purpose to segregate items into groups according to a specified criterion. (www.cogsci.princeton)

Sound

tympanum, bioacoustic sensed pressure waves.

Sound Calibration

assure sound measurement accuracy.

Sound Chambers

Shielded rooms designed to attenuate sound.

Sound Dosimeter

Measure exposure to noise.

Sound Intensity

magnitude and direction of sound waves.

Sound Level Meters
Sound Pressure Level

measurement of a sound wave's pressure relative to a reference value.

Sound Sources

Standard for calibrating sound level meters and sound measuring systems.

Sound Test

Checks power, intensity or the quality of sound.

Sources

The origin.

Space

the universe and beyond.

Spacecraft

vehicle coursing about the universe.

Spacewire

Spacecraft communication network.

S-Parameters

Scattering Parameters quantifies high frequency RF power waves propagation through a network.

Spark Plug
SPC

Monitoring, controlling and, ideally, improving a process through statistical analysis.

Speaker

convert's an electrical signal to sound.

Specific Absorbtion Rate

watts per kilogram of absorbed electromagnetic radiation.

Spectrograph

Measure the wavelengths and intensity of light.

Spectrometers

Measure the wavelengths and intensity of light.

Spectrophotometers

measure spectral; emittance, transmittance or reflectance.

Spectroradiometers

measure spectral power distribution of radiant exitance.

Spectroscopy

The use of the absorption, emission, or scattering of electromagnetic radiation by atoms or molecules (or atomic or molecular ions) to qualitatively or quantitatively study the atoms or molecules, or to study physical processes. Virginia Tech

Spectrum Analyzers

analyze the spectra of electrical signals versus frequency.

SPICE

Simulation Program with Integrated Circuit Emphasis.

SPL

measurement of a sound wave's pressure relative to a reference value.

Splitters
SPM

Used to study the properties of surfaces at the atomic level. (www.eng.yale.edu)

Sport
Spot Photometers

measure light emanating from a given direction and surface area.

Spring Probes

Spring loaded electrical conductor contacting elements.

SPST

Single Pole Single Throw relay.

SQUID

Superconducting Quantum Interference Devices

SRAM

Static Random Access Memory

SS7

Common Channel Signaling System No. 7 or Signalling System 7 a widely used ITU signalling protocol standard for PSTN telephone calls.

SSB

Single-sideband modulation.

SSG

Electronically creates the signal.

Standard Resistors

Resistor having a known resistance value.

Standards

A controlled reference or acknowledged technical criterion.

Standing Wave Ratio

Standing wave ratio.

Standing Wave Ratio Meters

Measure standing wave ratios in transmission lines.

Starter Testers
Static Locators

Measure static electricity charges.

Statistical Process Control

Monitoring, controlling and, ideally, improving a process through statistical analysis.

Stepper Motors

A device that translates electrical pulses into precise mechanical movement. The output shaft may deliver rotary or linear motion. (www.seanet.com)

Steppers

A device that translates electrical pulses into precise mechanical movement. The output shaft may deliver rotary or linear motion. (www.seanet.com)

Stepping Motor

A device that translates electrical pulses into precise mechanical movement. The output shaft may deliver rotary or linear motion. (www.seanet.com)

Storage Area Network

Storage Area Network

STP

Shielded Twisted Pair

Strain

a strenuous force that pulls.

Streak Cameras

measure intensity variations in multiple optical events over time, ultra fast.

Stream

A complete flow through.

Stress
Strobe Light

Timed short bursts of light illuminating vibration and rotation frequency.

Stroboscopes

Timed short bursts of light illuminating vibration and rotation frequency.

Styli

a touch probe for CMMs and machine tools.

Substation

transform and distribute electrical power.

Sulfur Dioxide

Sulfer Dioxide

Sun Simulators

replicate the sun's light.

Supercap

are high energy density electrochemical capacitors for delivery of short high-current pulses.

Supercapacitor

are high energy density electrochemical capacitors for delivery of short high-current pulses.

Super High Frequency

Super High Frequency from 3 GHz to 30 GHz.

Surge

A spike in voltage.

Surge Arrester

limit surge voltages.

Surge Arrestor

limit surge voltages.

Surge Generators

Equipment capable of simulating the types of surges (such as lightening) that impinge upon equipment in the real world. (www.powerquality.com)

Surge Testers

Analyze device performance under a sudden increase of electrical power.

Surveillance

The continual monitoring of a process; a type of periodic assessment or audit conducted to determine whether a process continues to perform to a predetermined standard. (www.asq.org)

S-Video

"Separate" Video is a physical video interface that carries the luminance and chrominance information separately. (boulder.noaa.gov)

Sweep Function Generators

Produce waveforms.

Sweep Generators

Produce continuously varying frequencies of a voltage over a band of frequencies.

Sweep Marker Generators
Switched Mode Power Supplies

Load Current is oscillated on and off regulating ouput voltage.

Switching

Controls consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit. (www.cogsci.princeton.edu)

Switching Power Supplies

Load Current is oscillated on and off regulating ouput voltage.

Switching Systems
Switchmode Power Supplies

Load Current is oscillated on and off regulating ouput voltage.

Switch Mode Power Supplies

Load Current is oscillated on and off regulating ouput voltage.

Switch Test

Make, break, or change the connection of a circuit.

SWR

Standing wave ratio.

SWR Analyzers
SWR Meters

measure standing wave ratios in transmission lines.

Synchronizers
Synchro / Resolver Converters

converts Synchro and Resolver analog shaft angle signal to a digital signal.

Synchro Resolvers

Compute trigonometric values over 360 degrees of rotation by varying the magnetic couplings between its primary (rotor) and secondary (stators) windings.

Synchros

Three wire rotary variable transformer like devices used to measure the angle of rotation over 360 degrees by varying the magnetic couplings between its primary (rotor) and secondary (stators) windings.

Synthesized Signal Generators

Electronically creates the signal.

Synthesizers

A system for generating any of a range of frequencies from a single fixed timebase or oscillator. (http://encyclopedia.thefreedictionary.com)

Synthetic Instruments

Generic hardware whose function specificity is completely defined by software.

System Level Test

assures application unit operation.

System-on Chip

A complete computer "System on a Chip".

System Test

Testing conducted on a complete, integrated system to evaluate the system's compliance with its specified requirements .