Electronic Test and Measurement Topics

Topics beginning with "L"
LabVIEW

Graphical development software

Lamp

Radiate light or heat.

LAN

The communication system of electronic devices within a building.

LAN Analyzers

Analyze aspects of Local Area Networks.

LAN Cable Testers
Laser Beam Analyzers

measure the shape and intensity of a laser ray.

Laser Beam Profilers

measure the shape and intensity of a laser ray.

Laser Diode

generate genuine laser oscillation with a semiconductor diode.

Laser Diode Controllers

Perform many sensing, monitoring, and control functions to assure voltage range.

Laser Diode Drivers

An integrated circuit that supplies modulated current to a laser diode in response to an input serial-data stream. (maxim-ic.com)

Laser Energy Meters
Laser Power Meters

Measure in Watts (joules per second) the rate of energy delivery.

Lasers

Light Amplification by Stimulated Emission of Radiation.

Laser Spectrum Analyzers

characterize laser spectral performance.

Laser Systems
Latch-Up
LCD

Analyze Liquid Crystal Displays.

LCR Meters

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

Lead Acid Battery

is a type of galvanic cell battery.

Leakage Current
Leakage Current Clamps

Measure low current emf surrounding a conductor.

Leakage Testers

Look for unintended path of current.

Leak Detectors

Sense current loss.

LED

Semiconductor diode that emits narrow spectrum light by converting electric energy into electromagnetic radiation.

Legacy

Continued use of a previous generation of product.

Lens Antennas

a microwave antenna used to focus or concentrate waves.

LF

Low Frequency 30 to 300 kHz.

Libraries

archived knowledge.

LiDAR

Light Detection and Ranging or Laser Imaging Detection and Ranging

Lifecycle Test

Assurance for determination of the length of device life.

Life Cycle Test

assures length of service.

Life Test

Assurance for determination of the length of device life.

Light

Visible spectrum of electromagnetic radiation from 400nm to 700nm.

Light Choppers

Intercept current or beams of radiation on a periodic basis.

Light-Emitting Diode

Semiconductor diode that emits narrow spectrum light by converting electric energy into electromagnetic radiation.

Lightmeters

Measure the intensity of light.

Light Meters

Measure the intensity of light.

Lightning

Electrical discharge occuring atmospherically.

Lightning Arrester

limit surge voltages.

Lightning Detectors

Sense atmospheric discharges of electricity.

Lightning Generators

Generate high voltage surges.

Light Sources
Li-ion Battery

use lithium compounds as the anode.

LIN

Local Interconnect Network

LIN-Bus

Local Interconnect Network

Linear Actuators

Drive movement in a line.

Linear Amplifiers

Linear PA is one which has a linear relationship between the input and output.

Linear Positioners

Positioning assembly restricted along one axis.

Linear Stages

Positioning assembly restricted along one axis.

Line Impedance Stabilization Network

Line Impedance Stabilization Network

Line Locators

Traces pipe, cable, conduit and electrical lines underground.

Line Replaceable Item

unit of a complex engineered system, designed for quick replacement.

Line Replaceable Unit

unit of a complex engineered system, designed for quick replacement.

Line Tracers

Traces pipe, cable, conduit and electrical lines underground.

Link
Liquid

freely flowing substance.

Liquid Level
LISN

Line Impedance Stabilization Network

Lithium Battery

use lithium compounds as the anode.

Lithium ion Battery

use lithium compounds as the anode.

Load Banks

Test a power source by providing controlled amounts of load to create conditions found in thier application.

Load Cells

convert mechanical force into electronic output signals. Load Cell Simulators

Load Cell Simulators

generate a precise mV/V signal to assure load cell amplifier, tester, readout and display set up. Load Cell Test

Loaded PCB Probes

Contact test pads on completed PCBs.

Local Area Network

The communication system of electronic devices within a building.

Location Based Services

position of wireless device avail local business directory.

Lock-in Amplifiers

measure a signal's amplitude and phase in noisy environments. Measure hi-res clean signals.

Loggers

Electronic instruments that record measurements (temperature, relative humidity, light intensity, on/off, open/closed, voltage, pressure and events) over time.

Logic Analyzers

measure logic levels (0 or 1) and the sequencing of digital events.

Logic Probes

Analyze the logic state of a digital circuit.

Log Periodic Antennas

Multielement, unidirectional, narrow-beam antenna that has impedance and radiation characteristics that are regularly repetitive as a logarithmic function of the excitation frequency.

Loop Antennas

A circle or rectangle shaped antenna consisting of one or more compete turns of a conductor and measures field strength's frequency <30 kHz.

Loopbacks

connect input to ouput to test I/O loop.

Loop backs

connect input to ouput to test I/O loop.

Loopback Testers
Loop Calibrators

Simulate, power and measure closed circuit signals.

Loop Impedance Test
Loop Testers
Loudness Meters

Measure the human percieved magnitude of audio.

Loudspeaker

convert's an electrical signal to sound.

Low Frequency

Low Frequency 30 to 300 kHz.

Low Pass Filters

Refine signal, allowing the transmission of signal below a specific corner frequency, while attenuating the frequencies above.

LPM

Measure in Watts (joules per second) the rate of energy delivery.

LRI

unit of a complex engineered system, designed for quick replacement.

LRU

unit of a complex engineered system, designed for quick replacement.

LTE

Long Term Evolution with 100Mbit/s downlink, 50Mbit/s uplink and < 10 ms ping.

LTE-M

Long Term Evolution for Machines

Luminance

The photometric measure of luminous power.

Luminance Meters

measure light emanating from a given direction and surface area.

Luminance Photometers

measure light emanating from a given direction and surface area.

Luminous Intensity

Amount of light emitted from a given direction.

Luxmeters

measure illuminance in lux.

Lux Meters

Measure illuminance in lux.

LVDS

Low voltage differential signaling

LVDT

Linear Variable Differential Transformer measures distance traveled in a straight line.

LXI

LAN extensions for instrumentation