Electronic Test and Measurement Topics

Topics beginning with "R"
Rackmount

Instrument capability of mounting to racks.

Radar

Radio Detection and Ranging.

Radar Detectors

Monitor for rf and laser waves.

Radar Simulation

reproduce or represent the performance of a radar.

Radar Simulators

reproduce or represent the performance of a radar.

Radar Test
Radiance

Measure of EMR amount.

Radiation

The transmission of energy through material or space.

Radiation Detectors

Sense radiant energy.

Radiation Dosimeters

Measures the cumulative amount of radiation exposure.

Radio

Transmission of modulated electromagnetic waves whose frequency falls below light.

Radio Frequency

3 kHz to 300 GHz or a frequency < microwave.

Radio Frequency Identification

A data organization system using radio frequency signals from electronic tags to identify, track, and control objects.

Radio Frequency Integrated Circuits

Analog integrated circuits, operating at or above the ultra-high frequency band.

Radiometers

measure the power of radiant energy.

Radio Modems

Serial data radio frequency transceiver.

Radio Test Sets
Radon

Rn is a radioactive noble gas.

Railroad

A tracked means of transport.

Railway

A tracked means of transport.

RAM

Random Access Memory

Raman

Sir Chandrasekhara Venkata Raman co-discoverer of the Raman effect in liquids.

Ramp Test Sets

airborne avionic and communication test equipment used on the tarmac.

Range Finders

measure distance to range a target.

Raspberry Pi

a tiny single-board computer.

Rate Sensors

Measures rotational velocity around a sensitive axis.

Ratiometers

Measure power's peak-to-average ratio level.

Ratio Meters

measure power's peak-to-average ratio level.

RCCB

Residual Current Circuit Breaker

RCD

Residual Current Device

RDM

"Remote Device Management" formally known as E1.20 extends DMX with bi-directional communications.

Reactive Load Banks

Provide both lagging and leading power factor loads.

Receivers

Equipment that is the sink or terminator of any signal on a transmission medium. (atis.org)

Receptacle Testers

test access viability to electricity, gas or data.

Reconditioned

Recondition equipment to make almost new.

Reconnaissance

A search to recognize useful information.

Recorders

capture and hold data, authenticating events.

Recording Systems

Equipment designed to make an automatic record of output from test equipment.

Rectifiers

Convert AC to DC.

Reference Decoders
References

A source of comparison.

Reference Sources
Reference Transmitters

high quality optical transmitters for test and measurement.

Reflectometers

Instruments used to measure the reflectance of a surface. (spaceflight.nasa.gov)

Reflectometry

The science and techniques involved in using reflectometers. (www.geog.nottingham.ac.uk)

Refractometers

measure a substance's RI (refractive index).

Refurbish

Recondition equipment to make almost new.

Refurbished

Recondition equipment to make almost new.

Register Transfer Level

Resisitor-transistor logic.

Regulated DC Power Supplies

Clip unregulated (varying) source of DC voltage at a specified level to supply regulated (steady) voltage to a load. (allaboutcircuits.com)

Relay

electromechanical or semiconductor switches.

Relay Drivers

Control the energized state of relays.

Relay Test
Relay Testers
Relay Test Sets
Reliability

assured quality and continuity of performance.

Remote Terminal Unit

Collects data from data acquisition (DAQ) devices and transmits the information to the main test system via a network.

Repair

Fix equipment and restore to good working order.

Residual Gas Analyzers

Monitor for immpurities in a gas environment.

Resistance Bridges

Provide precise resistance measurement.

Resistance Calibrators
Resistance Decade Box

set of precision resistors configured in desired resistance values.

Resistance Meters

measure opposition to electrical current.

Resistance Temperature Detectors

- variable-resistance sensor measuring temperature by fluctuations in resistance.

Resistance Test

measured in ohms is the ability of a current to conduct.

Resistance Thermometers

- variable-resistance sensor measuring temperature by fluctuations in resistance.

Resistive Load Banks

Check power source's ability to deliver a given current and voltage at unity power factors.

Resistivity Meters

measure electrical current's dissaptive properties.

Resistors

Keep a steady fixed or variable voltage to current ratio as measured in ohms.

Resolvers

Use four wires to compute trigonometric values over 360 degrees of rotation by varying the magnetic couplings between its primary (rotor) and secondary (stators) windings.

RF

3 kHz to 300 GHz.

RF Amplifiers

take low power RF signals and output RF signals that vary in the same way as the input signal, but with a raised amplitude.

RF Analyzers
RF Attenuators

Used to reduce input RF & Microwave power by a fixed ratio – expressed in dB. (www.e-meca.com)

RF Box

A space surrounded by an electromagnetic radiation barrier

RF Detectors

Sense the presence of radio frequencies.

RF Enclosures

a space surrounded by an electromagnetic radiation barrier

RF Field Strength Meters

measure magnitude of electromagnetic field.

Rf Frequency Synthesizers
RF Generators

Produce radio frequency (RF) signal for device evaluation and fault detection.

RFI

EMI occuring in the RF spectrum.

RFIC

Analog integrated circuits, operating at or above the ultra-high frequency band.

RFID

A data organization system using radio frequency signals from electronic tags to identify, track, and control objects.

RF Matrices

route radio frequency signals through a a grid array.

RF Matrix

route radio frequency signals through a a grid array.

RF Multiplexers

Devices that select between a number of RF signals.

RF Noise Test

Radio frequency interference.

RF Power
Rf Power Amplifiers
RF Power Meters

measure RF signal strength.

RF Power Sensors
RF Probes

Coaxial Probes are said to offer repeatable performance up to 3 GHz in custom or standard configurations.

RF Sensors

Detect RF signal and represent the detected signal level in a manner that can be measured and recorded.

RF Signal Generators
RF Sources

Produce Radio Frequency (RF) signal.

RF Spectrum Analyzers
RF Switching

The opening and closing of RF connections.

RF Voltmeters

Measures RF voltages on tuned circuits.

RF Wattmeters

Measure RF power.

RGA

Monitor for immpurities in a gas environment.

RGB

Red, Green and Blue video signal.

River

a watershed's flow when resulting in currents.

RJ45

Common name for any 8P8C modular connector.

RLC Meters

Measure inductance(L), Capacitance, and Resistance or impedance.

Robots

A computerized machine designed for a wide variety of manufacturing functions such as material handling and automobile assembly. (www.scotsmist.co.uk)

ROM

Read Only Memory.

ROM Emulators

A debugging tool that assumes the role of a system resource to examine and change memory, I/O, and registers.

Rope
Rotary Actuators

Cause movement revolving around an axis.

Rotary Stages

Revolve a table in a circular motion.

Rotor
Routers

Direct the flow of data packets between networks at the network layer.

Router Test
RS-170a

National Television System(s) Committee

RS232

A standard interface for serial binary data interchange defining voltage levels for logical one and logical zero, standard transmission speed and connector types.

RS-232

A standard interface for serial binary data interchange defining voltage levels for logical one and logical zero, standard transmission speed and connector types.

RS-232 Analyzers
RS422

One of several standards that incorporate balanced line signals into DB connectors. A pair of wires is used to carry each signal. The data is encoded and decoded as a differential voltage between the two lines. (www.sangoma.com)

RS-422

One of several standards that incorporate balanced line signals into DB connectors. A pair of wires is used to carry each signal. The data is encoded and decoded as a differential voltage between the two lines. (www.sangoma.com)

RS485

Serial communication line supporting 32 devices.

RS-485

Serial communication line supporting 32 devices.

RS530

DTE to DCE cable specification.

RS-530

DTE to DCE cable specification.

RTA

characterize audio frequencies between 20 Hz to 20 kHz.

RTD

- variable-resistance sensor measuring temperature by fluctuations in resistance.

RTD Simulation

calibrate resistance temperature detection systems.

RTD Simulators

calibrate resistance temperature detection systems.

RTL

Resisitor-transistor logic.

RTP

Real-time Transport Protocol

RTU

Collects data from data acquisition (DAQ) devices and transmits the information to the main test system via a network.

Rubidium Oscillators

A device that uses the resonance frequency of the rubidium atom (6,834,682,608 Hz) to control the frequency of a quartz oscillator.

Rubidium Reference

In telecommunication, a rubidium standard is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency. (www.encyclopedia.thefreedictionary.com)

Rubidium Standards

In telecommunication, a rubidium standard is a frequency standard in which a specified hyperfine transition of electrons in rubidium-87 atoms is used to control the output frequency. (www.encyclopedia.thefreedictionary.com)