Acoustical References
Standard for calibrating sound level meters and sound measuring systems.
See Also: References, Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Frequency References, Solar Reference Cells
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Reference Transmitter
81491A
Transmitter
Keysight's 81491A Reference Transmitter is designed to offer excellent eye quality for NRZ and PAM4 signals at baud-rates up to 32Gbaud and can serve as universal E/O converter. It comes in Multimode (MM) and Single-Mode (SM) flavors and includes internal lasers at 850nm (MM) or 1310&1550nm (SM). External optical input for usage with tunable laser sources is available for SM option. It is fully integrated into Keysight’s Optical Receiver Stress Test solutions to address test requirements of IEEE 802.3 10,40,100 and 400GBASE optical standards.
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Gas in Metal Reference Materials
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NCS Testing Technology Co., Ltd.
Gas in Metal Reference Materials by NCS
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Product
Attitude And Heading Reference Systems
AHRS
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Beginning in 2001, Inertial Labs began manufacturing its MEMS-based, IP-67 sealed, MIL-STD-810G qualified, multiple interfaces and COM ports Attitude and Heading Reference System in response to the need for an inclusive and price competitive Antenna Pointing, Aiming, and Stabilizing applications. Each INS contains an Inertial Labs-developed tactical or industrial-grade inertial measurement unit (IMU) and an Inertial Labs-manufactured high-precision Fluxgate magnetometer.
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Product
Passive Wildlife Recorders - Acoustics & Bats
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Now you can record bats, birds, frogs and other vocalising wildlife with one device. An easy-to-use recorder, compact, lightweight and customisable. It is designed to survive your tough field conditions. It is weatherproof and robust, with low-profile microphones (to reduce the likelihood of pesky livestock and wildlife chewing them).
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Product
Acoustic Analysis
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Noise is increasingly the subject of new regulations for the protection of human health and safety as well as for improving the environment in general. As well as sound levels, the perceived sound quality of products from washing machines to vehicles is often an important part of the customer buying decision so must be considered during product development. m+p Analyzer for noise and vibration measurement and analysis provides a full range of capability for these applications. Real-time fractional octave filters satisfy all acoustic applications from simple sound pressure, sound power for equipment legislative requirements, intensity mapping to isolate sources to sound quality metrics for product refinement.
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Product
Precigrader: Acoustic MSR System
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Precigrader is an acoustic on-line strength grading system. The system is installed in more than 150 mills. It is used to determine common commercial grades in North America, including 1650 and 2100. A spring-loaded impact mechanism strikes the lumber as it passes. The resulting vibration is captured by microphones to determine the appropriate MSR grade.
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Product
VoLTE Battery Test, Reference Solution
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The VoLTE Battery Test, Reference Solution is a fully automated test solution for chipset vendors and device makers who need to follow operators’ VoLTE battery acceptance test plans.
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Product
LTE/LTE-Advanced Multi-Channel, Reference Solution
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Gain greater insight faster with a compact, multi-channel LTE-A PXI signal generator and signal analyzer reference solution.This Reference Solution uses world-class Signal Studio software to create complex LTE-A waveforms and the 89600 VSA/WLA software to connect to multiple analyzers. The VSA software allows engineers to quickly view multiple antenna elements simultaneously and analyze the RF performance and modulation domains for timing and signal quality issues in complex carrier aggregation and MIMO/beamforming designs.
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Product
Room Acoustics Analysis on iOS
RoomScope
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RoomScope turns your iPad, iPhone, or iPod touch into a room acoustics measurement and analysis tool. With RoomScope, you can measure a room impulse response and then calculate reverberation time, early decay time, clarity, and definition, as defined in the ISO 3382 standard. RoomScope also allows you to adjust the Schroeder decay curve integration limits with the touch of your finger and plot the calculated room parameters versus whole or 1/3-octave band center frequency.
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Product
Workstation For Acoustic & Vibration Engineering
imc WAVE 2022
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imc WAVE is a modular, powerful software platform for noise and vibration analysis (NVH analysis). From noise investigations in road tests to structural analyses on the test bench and vibration tests on machines: with different imc WAVE analyzers, you can evaluate a wide range of applications without having to be an expert yourself. In this way, you can also easily and reliably obtain standard-compliant analysis from the fields of noise and sound power analysis, structure analysis as well as the evaluation of the analysis of vibrations and of rotating machines. imc WAVE guides you step by step through the settings, from device configuration to calibration and measurement. In the end, you evaluate your data professionally and then receive a report that is ready to print. The modular software specializes in the following topics.
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Product
Programmable Voltage Reference Plug-In
ProDAQ 3202
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The ProDAQ 3202 voltage reference card is used in the ProDAQ 3180 ultra-performance motherboards and LXI function card carriers. The ProDAQ 3202 voltage reference card is plugged directly onto the motherboard or carrier and can distribute the reference voltage to all ProDAQ function cards via two signal lines. This allows the distribution as a differential signal to overcome possible noise pick-up.
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Product
SMARC 2.1 Reference Carrier Board with M.2 Extension
I-Pi SMARC Plus
Carrier Board
The I-Pi SMARC Plus is small (110mm x 110mm) SMARC reference carrier board based on SGeT SMARC (Smart Mobility ARChitecture) 2.1 hardware specification. Together with the SMARC short size module of your choice and off the shelf add-on cards, you can quickly emulate the functionality of your desired end product for software development and hardware verification.
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Manikins for realistic simulation of the acoustic properties of a human
Head & Torso Simulators
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If you need to carry out realistic in-situ measurements of headphones, telephones or hearing aids, you need a Head and Torso Simulator such as the B&K ‘HATS’ – Type 4128D or GRAS’ Kemar to complete your test setup. These manikins have built-in ear and mouth simulators that provide a realistic reproduction of the acoustic properties of an average adult human head and torso. They are commonly used for tests on telephone handsets, headsets, audio conference devices, microphones, headphones, hearing aids and hearing protectors. Please contact your sales engineer or email sales@listeninc.com for more information.
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Acoustic Emission Sensors
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Acoustic wave (acoustic emission) sensors are the ceramic piezoelectric transducers converting the mechanical elastic acoustic waves generated in the material (e.g. elastic waves occur when a material cracks, wears, deforms, or corrodes) to electrical signals. The electrical signals are then amplified and filtered by a preamplifier and then transmitted to a special acoustic emission acquisition instrument for further data processing and analysis.
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Acoustic Calibrators
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When you're ready to take noise measurements, it's strongly recommended that you perform a field calibration using an Acoustic Calibrator. You should calibrate your sound meter before you start to measure, and then once you've finished you should perform a reference check against the calibrator and make note of any drift that has occured. You can find out more about performing Field Calibrators by reading this post and watching a short video.
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Reference Standard
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Beijing GFUVE Electronics Co.,Ltd.
It has been designed for universal laboratory and test applications and is intended for checking and the calibration of reference standards for electrical power and energy.
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Acoustic Calibration Services - IEC
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Acoustic Calibration Services - IECMake sure you measure correctly! We offer traceable acoustic calibration services according to international IEC and ANSI standards and ensure that your instrument accurately indicates the required measurement parameters. Calibrations are documented, traceable, and digitally signed in cooperation with an accredited calibration laboratory.
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Product
Reference Oscillator
REF Series 0.9” x 0.9” x 0.21”
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*Connectorized Package *Free Running *Low Phase Noise *Output Power to +12 dBm Available
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Product
True Reference Audio Interface With MDIO Expansion
Titan
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Titan and Atlas are world class multi-track interfaces offering flexible expansion and unsurpassable sonic clarity. Using the latest generation of Prism Sounds trusted conversion, Titan is ideal for music and sound recording, multi-tracking, overdubbing, stem-based mastering, analogue summing and critical listening applications.
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Product
Audio and Acoustic Functional Test Solution
Functional Test
With the growing popularity of Internet of Things devices worldwide, many electrical products are adopting voice commands as their user interface. This means that acoustic and audio test challenges are likely to impact more products than ever before. Test teams must meet extended test coverage requirements to ensure product quality while maintaining throughput and operational efficiency. For a solution to meet these sorts of demands, it must:
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NI Real-Time Test Cell Reference System
780590-35
test
VeriStand Full Development License with NI Standard Service , Include 1 Year SSP
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NI Real-Time Test Cell Reference System
778820-35
test
DIAdem Advanced with DAC Bundle, Perpetual License, Include 1 Year SSP
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Acoustic Wave (Acoustic Emission) Monitoring Solutions
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Qingcheng offers a variety of solutions to solve some essential difficulties and problems in some industrial fields.
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Adjustable High Frequency Reference Ballast
HCS-109A
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HCS-109A Adjustable High Frequency Reference Ballast also called High Frequency Current Source. Comparing to IEC Test Method, HCS-109A is an Equivalent Test Method which is economic solution. HCS-109A equipped with Spectrophotometer & Integrating Sphere Test System. It can also measure the photo, color and electricity parameters for high frequency fluorescent lamp.Specifications: • Input voltage: 200V~240V, 50/60Hz • Input Power: 80 W max • Output Current: 130mA~400mA (Adjustable), accuracy: +/- 1% • Output Frequency: 25kHz< +/-2.0% (Adjustable), accuracy: +/- 0.3kHz • Output current total harmonic wave distortion: THD<2.5% (HF current wave)
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Acoustic Emission Calibrator
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AE calibrator is similar to a simple signal generator, it can generate a variety of controlled waveform signal, different types, different amplitude and different frequency. It can help users calibrate acoustic emission detection equipment before acoustic emission detection.
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Product
Acoustic Calibrator
CAL250
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The Larson Davis Model CAL250 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment.
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Product
Reference Clock T Connector
780540-01
Reference Clock T Connector
The SMA-SMA-SMA T Connector, sometimes referred to as the Reference Clock T Connector, connects RF wireless test devices and PXI modular instruments to other accessories. It is a 50 ohm … impedance connector that measures 0 GHz to 10 GHz.
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DDR4 Parametric Test Reference Solution
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Keysight's DDR4 parametric test reference solution helps verify the signal integrity of DDR4 memory designs according to JEDEC specifications.
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Reference Antennas
Type NRD
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Reference antennas are precision dipole antennas that offer a fixed 2.15 dB of gain over an isotropic antenna along the major lobe axis at specified frequencies (2.15 dBi). They are intended to be used for antenna field pattern and gain measurements, or general RF sensing in the laboratory.
