Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Omni Measuring Microphone
PVR™ 2
Omni-directional microphone for free-field measurement. With a highly reliable circuit and a 1/4" pre-polarized condenser capsule, it boasts high stability, low distortion and low noise in performance. Its excellent flat frequency response makes it ideal for sonic analysis systems and recording.
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Potentiostat / Galvanostat / Impedance Analyzer
PalmSens4
PalmSens4, is a USB and battery powered Potentiostat, Galvanostat, and optional a Frequency Response Analyser (FRA) for Electrochemical Impedance Spectroscopy (EIS). The PalmSens4 has a large potential range (-5V to 5V or -10V to 10V) and current range (100 pA to 10 mA) with a high resolution and low noise. This instrument is a complete laboratory instrument but its compact and rugged design makes it also ideal for field work.
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Acoustic Calibrators
We offer a range of Class 1 and Class 2 acoustic calibrators for the field calibration of any make or model of sound level meters and noise dosimeters.
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Linear Accelerometers
Columbia Research Laboratories
Columbia Research Labs line of Force Balance Linear Accelerometers offers low cost, high performance, general purpose single axis accelerometers that are ideal for DC and low frequency measurements, with both voltage and current signal outputs available. Also offered are Columbia's Solid State Sensors and our specialized Airborne Sensors that generate outputs specifically designed to operate from +24 to +32VDC aircraft power, that is excellent for airborne telemetry applications. And our Low Noise Sensors are designed for use in seismic, low level, low frequency motion studies.
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Mixed Signal Oscilloscope: 8 GHz, 4 Analog Plus 16 Digital Channels
MSOV084A
8 GHz analog bandwidth (upgradable)4 analog plus 16 digital channels Capture a longer signal trace with up to 80 GSa/s sample rate and 2 Gpts of acquisition memory Get the best signal integrity with the low noise floor (1.04 mVrms at 50 mV/div) and lowest jitter measurement floor (100 fs)See better measurement accuracy with ENOB values in excess of 5.5 and a SFDR exceeding 50 dBC Access the broadest range of jitter, trigger, analysis and protocol tools (featuring Precision Probe)
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Low Acoustic Noise and Compact Range
m-series
DC powered cooling fan is built-into the shaker. Natural air cooling is also used when the cooling fan is stopped for silent operation. (with a reduction in performance)
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C Series Temperature Input Module
The C Series Temperature Input Module features up to 16 channels of temperature input from either thermocouples or RTDS. This module can include anti-aliasing filters, open-thermocouple detection, and cold-junction compensation. Additionally, the module also feature isolation for safety, noise immunity, and high common-mode voltage range.The C Series Temperature Input Module includes the NI-DAQmx driver and configuration utility that simplify configuration and measurements. NI-DAQmx supports NI programming environments as well as Python, ANSI C, C#.NET, and MathWorks MATLAB® software.
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Band Pass Filter
PA72BPF
The PA72BPF daughter board is an additional filter board. It typically contains two selectable differential 3rd order elliptic band pass filters. These filter modules are tailored by Applicos to the customers’ requirements. The filters can be used to filter the output signal of the generator daughter boards to achieve an even better distortion and noise suppression.
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EMI Filters And Application-Specific Integrated Products (ASIP)
An electromagnetic interference (EMI) filter is used in electronic circuits to improve system immunity against unwanted external electromagnetic signals from neighboring circuits and to avoid emitting radiation (“noise”) that may disturb the same nearby circuits by canceling unwanted frequencies.
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TINYig Oscillators
The smallest available oscillator in the industry, Teledyne Microwave's TINYIG is an ultra-low phase noise YIG-tuned oscillator (YTO) that provides superior phase noise frequency up to 20 GHz. Uniquely designed to be RoHS compliant, these YIG TO-8 oscillators exploit the principle of magnetic resonance to generate a clean, low phase noise microwave signal over broad tuning ranges. It can greatly simplify system designs, thus reducing costs, eliminating the need for extra components, and reducing the risk of malfunctions of complicated electronic connections and operations.
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PXI/PXIe RF Multiplexer, Single 16-Channel, 3GHz, 75Ω, SMB
42-835A-001
The 40-835A-001 (PXI) and 42-835A-001 (PXIe) are single 75 Ohm 16-channel RF multiplexers in a single slot. It has been designed to exhibit low insertion loss and VSWR through the use of modern RF relay technology at an affordable cost. The MUX has been carefully designed to ensure excellent and repeatable RF characteristics to frequencies of 3GHz. The design of the 40/42-835A minimizes the injection of noise and unwanted signals into the signal path by careful attention to the mechanical and electrical design.
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Workstation For Acoustic & Vibration Engineering
imc WAVE 2022
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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Directional Acoustic Transponder (DAT)
The Benthos Directional Acoustic Transponder (DAT) is anextension to the Teledyne Benthos ATM-900 Series modem, which automatically estimates the azimuthal and vertical arrival angles of a message sent by a remote modem. The system is a modified ultra-short baseline (USBL) which uses a broadband component of a typical modem message to form estimates of arrival angle(s). While conventional USBL devices employ tonal signals, our appropriate processing of wide band signals provides far better combined range and arrival angle estimation, especially at low Signal to Noise Ratio (SNR). Our device offers a clear 360 degree field of view in azimuth, and an approximate vertical coverage spanning + 90º overhead to -50º below horizontal.
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AI Virtual Assistant Performance Analyzer
Vocalyzer Test Suite
The vocalyzer test suite has been developed to enable black-box evaluations and benchmarking of AI powered virtual assistants. The goal is to help highlight gaps in performance with measurable, repeatable and shared benchmarks. For the initial task of assessing the hearing capabilities of speech recognizer engines, vocalize.ai has leveraged expertise from the world of audiology; the branch of science that studies hearing, balance and related disorders. Working with talented audiologists, the company has identified procedures and modified them to work with virtual assistants. Audiology tests such as Speech Recognition Threshold (SRT) and Speech In Noise (SIN) are supported by a cloud based utterance database and are readily available for product benchmarking.
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Phase Locked Oscillators
Phase locked oscillators (PLO) utilize state-of-the-art planar circuits, three-terminal devices and dielectric resonator technology to generate high-quality microwave signals at lower frequencies. Frequency multipliers, amplifiers and filters are used to extend the low frequencies for higher frequency requirements. The standard offering covers the frequency range of 2 to 110 GHz and provides both internal and external reference options. The frequency stability and phase noise are dependent on the oscillator reference type.
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Ethernet/LXI digitizerNETBOX 14 Bit High Speed Digitizer - 500 MS/s on 16 Channels, 16 Single-Ended Inputs
DN6.445-16
The digitizerNETBOX DN6.44x series allows recording of up to 24 synchronous channels with sampling rates of 130 MS/s up to 500 MS/s. These products offer outstanding A/D features in resolution, bandwidth and speed as a remote instrument. The powerful A/D amplifier section offers six different input ranges, two input paths, AC/DC coupling and noise reduction filters.
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Double Regulation Power Supply
Double regulation power supplies include: DO series, AxN series, ATR series.The Power Supplies of the AxN series are built with the double regulation technique. The first regulation is obtained by the partialization of the grid circulation angle as automatic variac. The second regulation functions as a linear stabilizer with constant dissipated power. As a result, this solution allows to obtain both low power dissipation and, thanks to the linear regulation, excellent output characteristics.DO series Power Supplies are made with the double regulation technique. A linear stabilization circuit is added to a thyristor-controlled bridge, which allows to reduce the power absorbed by the network. This type of control allows a volume reduction compared to linear power supplies but it preserves the characteristics of low noise and speed of response.ATR linear Power Supplies series are built with the double regulation technique. the first regulation is obtained by the personalization of the grid circulation angle as automatic variac. The second regulation functions as a linear stabilizer with constant dissipated power. As a result, this solutions allows to obtain both low power dissipation and, thanks to the linear regulation, excellent output characteristics.
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Basic Quad K-Type Analog Thermocouple Amplifier
SEN-30103-K1
Analog thermocouple amplifier board based on the AD849x from Analog Devices (successor of the AD597). This quad-channel thermocouple board converts the very low voltage signal from a thermocouple to a highly-linear, 0.005V/C output with either 0V or 1.245V offset (both configurations stocked) while removing unwanted noise from the signal. Many supply and output configurations are available with this board, though the PCB was designed with Arduino in mind. Specifically, the output header will plug directly into a standard Arduino Uno or Mega, with a pin-for-pin match for power supply, ground and analog outputs. With a 5V Arduino, temperatures from 0C to 1,000C are possible with the 0V offset board and -249C to 750C with the 1.245V offset board. If using a 3.3V microcontroller (Due, etc), the board must be supplied with no more than 3.3V to avoid damaging the microcontroller. Temperature measurement range is dependent on the supply voltage. It is possible to supply the board with higher voltages to allow temperature measurement over the entire operating range of the K-Type and J-Type thermocouples, allowing use with more capable data acquisition equipment.
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Single Axis AC Magnetic Field Sensor
MGC-1A
Macintyre Electronic Design Associa
The MGC-1A is a low noise high sensitivity single axis AC magnetic field sensor used for the measurement of audio frequency fields. Because of its innovative design, the MGC-1A amplitude response is insensitive to the frequency of the field over its 30 Hz to 10 kHz frequency band. Accuracy at 1 kHz is ±1%, and the amplitude response stays within 2 dB peak-to-peak over the bandwidth.
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4-CH, 14/16-Bit, Up to 2MS/s Simultaneous-Sampling Multi-Function PXI Modules
PXI-2000 Series
ADLINIK PXI-2010, PXI-2005 and PXI-2006 are simultaneous-sampling multifunction PXI modules to meet a wide range of application requirements. These products can simultaneously sample 4 AI channels with differential input configurations to achieve maximum noise elimination. They also provide 2-CH 12-bit analog outputs with waveform generation capabilities, which can be performed together with analog input functions. If more analog input or output channels are required, multiple modules can be synchronized through the PXI trigger bus. This makes the PXI-2000 series ideal for stimulus/response tests. The PXI-2000 series also feature analog and digital triggering, 24-CH programmable digital I/O lines, and 2- CH 16-bit general-purpose timer/counters. The auto-calibration feature adjusts the gain and offset to a specified accuracy, eliminating the need to calibrate the modules by adjusting trimpots.
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C Series Voltage And Current Input Module
The C Series Voltage and Current Input Module features up to 16 input channels with built-in noise rejection. You can use this module to combine the two most common inputs to reduce the overall number of modules you need in your measurement system.The C Series Voltage and Current Input Module includes the NI-DAQmx driver and configuration utility that simplify configuration and measurements. NI-DAQmx supports NI programming environments as well as Python, ANSI C, C#.NET, and MathWorks MATLAB® software.
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Multi-Stage Injection Analyzer
FJ-8000 series
Common rail method already is commonly known as an injection system of diesel engine now. That system enables multi-stage fuel injection by offering high injection pressure in various driving situation. Adopting the common rail system helps improving fuel consumption, reducing noise and vibration, because the system can make the fuel approximate complete combustion which suppresses PM and NOx generation. FJ-8000 series is the multi-stage injection analyzer that supports more accurate injection by measuring injection quantity, injection rate, injection timing, and injection period by multi-stage injection of common rail system in the environment that is near to an actual vehicle environment.
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High-Density Precision SMU (100 PA, 30 V)
PZ2130A
The Keysight PZ2130A is a high-channel density precision source / measure unit (SMU) with 5 channels per module that saves space at a low cost per channel for a wide range of applications requiring numerous precision power supplies. Its seamless current measurement ranging function eliminates the time it takes to change the range and expands the dynamic range to cover multiple measurement ranges, which reduces test duration. These capabilities make the PZ2130A suitable for applications that require numerous precision power supplies, such as semiconductor reliability tests and integrated circuit (IC) tests. The Keysight PX0107A low noise filter adapter lowers its voltage source noise level, which makes the PZ2130A suitable for noise sensitive applications such as quantum computing as well.
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Low Cost Microwave Wideband APD Preamp Receivers
MR11 (40KHz~18GHz)
Hangzhou Huatai Optic Tech. Co., Ltd.
MR11 series microwave wideband optical receiver, adopts high Sensitivity APD diode and Low Noise Preamplifier IC, within bandwidth of 40KHz~18GHz, they are featured with excellent linearity, high responsibility and superior flatness of the RF response in both, power and phase. They provide an outstanding linearity fiber optical communication for analogue wideband microwave application. Due to avoidance of using expensive coaxial cable or wave-guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless, timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s high speed communication system.
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High Speed Slip Rings
High Speed Slip Rings transfer power and data in rotating environments at speeds of up to 20,000 rpm. They provide low noise, high reliability and long life.
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Waviness, Roundness and Form Analyser
SKF Condition Monitoring Center
Waviness testers from SKF allow analysis of the waviness on the components and thus give the production engineer a powerful tool to improve the production process. Because low noise and vibration of bearings is becoming more important, there is a high demand on the measuring accuracy and resolution.
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dBAir Sound Meter
The dBAir Sound Level Meter is a handheld instrument, designed to perform a wide range of demaning noise measurements for environmental and safety applications. It's easy to use, making your job of measuring noise as easy as possible. Supplied with secure Cloud software, log on via any internet browser and have access to power analysis tools within no time at all. Alternatively, all of your data is available to download from the dBAir as a .csv file, giving you complete functionality with your readings.
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Community Noise Prediction Software, Version 2
SPM9613
A low-cost computer program for analyzing community noise and sound propagation emitted from a variety of noise sources. The engineering software is based on the ISO 9613 parts 1 and 2 standards. SPM9613 provides calculations at specific field points (listeners) and predictions of A- and C-weighted sound level contours as well.
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Tunable Non-Reflective Band-Reject Filter (700MHz-1GHz)
SPCL-00597
This device is placed after the DUT to protect the Spectrum Analyzer from high-power fundamentals and provide harmonic measurements. The non-reflective functionality prevents energy from bouncing back to the DUT and raising the noise floor level.Broadband matching improves dynamic range and reducesmeasurement uncertainty.
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HFC Analyzer
X16
The Kronback Tracers X16 is a DOCSIS 3.1 compatible suite of HFC monitoring tools such as return path analyzer, sweep system, downstream carrier monitor. Return path monitoring includes an advanced quality engine to log history information of noise and quality and alerts if ingress is present. Features such as NMS gateway and a dedicated RF switch increases the flexibility.
