Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Noise Figure Analyzers & Noise Sources
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Keysight Technologies provide a range of noise figure measurements solutions to meet your needs, from the NFA series noise figure analyzers to the noise figure measurement personalities for our spectrum analyzers. We also have a range of noise sources to complete the measurement solution.
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Product
Noise Generator
NG 600
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The NG 500 noise generator is an external module with dual power supply for different applications: to calibrate filters, switchboards, to the distance of a fault caused by the impedance mismatch, to test the cable efficiency.
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Product
Phase Noise Test System
N5511A
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The Keysight N5511A phase noise test system (PNTS) lets you measure at the limits of physics with readings down to kT (-177 dBm/Hz). The N5511A PNTS is a replacement for the gold-standard Keysight E5500 phase noise measurement system and is designed to meet the needs of phase noise power users.
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Active Noise Cancellation
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ams analog and digital Active Noise Cancellation (ANC) solutions deliver class leading ambient noise reduction, significantly improving sound quality for portable consumer devices.
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Product
Acoustic Noise
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American Environments Co., Inc.
A Test Specimens can be evaluated in two different modes in reference to acoustic noise: The Test Specimen's response to acoustic noise and the Test Specimen's generation of acoustic noise.
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Product
Low Noise Amplifier
LNA
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Teledyne Defence & Space (TDS) Low Noise Amplfiers (LNA) are designed to amplify very low power signals without degrading the signal-to-noise ratio.An amplifiers is designed to increase the power of both the signal and the noise however the Low Noise Amplifier is specifically designed to minimise the additional noise so important information should not be lost.
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Noise Monitoring Systems
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It delivers 24/7 connectivity, continuous power capabilities, and a rugged design to simplify your long-term testing.
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Noise Thermometer
MFFT-1
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The MFFT-1 magnetic field fluctuation thermometer is a high accuracy thermometer system for typical dilution refrigerator temperature ranges.
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Noise Dosimeters & Sound Level Meters
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There are multiple methods at your disposable to mitigate the hearing loss risk, including engineering controls, administrative controls, and implementing a hearing protection program. But in order for the program to be effective and efficient, consistent monitoring of personal and ambient noise exposures is necessary to log data and determine appropriate corrective action.
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PC USB Noise & Vibration Measurement Systems
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IEPE Sensor Based Measurement Systems, Charge Amplifier Based Measurement Systems, All-in-One Integrated Vibration Measurement Systems
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Product
Phase Noise Tester 5MHz to 40GHz
Model 7340
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Berkeley Nucleonics Corporation
Broad Frequency Range in a single compact instrument from 5MHz to 40GHz. Measurement offsets from .01Hz to 100MHz. Absolute Phase Noise - High Drift mode (ability to measure modulations, high drifting or unstable DUTs, etc.). AM (Absolute Amplitude Noise) measurements. Pulsed Measurement Capabilities. Transient Mode: measure WB Frequency, NB Frequency, NB Phase, NB Power (WB/NB being Wide Band and Narrow Band). Dual channel low-noise integrated power supplies.
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Phase Noise Testing
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The systems are based in the UK although testing for any company world wide will be undertaken.
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Playback And Noise Simulation
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Our systems make sounds and vibrations perceptible – from the pure, aurally accurate playback of binaural recordings to the realistic reconstruction of sound fields and background noise.
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Product
Phase Noise Analyzer
NXA-50
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This new NXA-50 is a sea-change in Phase Noise Test Systems. Making both residual and absolute noise measurements out to 50 GHz, this self-contained instrument uses either internal or external references with cross correlation for maximum dynamic range.
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Product
Low Noise Amplifiers
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LNA is an outstanding and mature product line of Skylink Microwave. We provide high performance low noise amplifiers in the industry, with reliable and rugged quality. Ultra low noise, ultra broadband and compact size are our specialty and enduring pursuit. Our engineers are committed to satisfying higher custom requirements of our customers and insist on designing optimized products to meet market challenges. Skylink Microwave provides you an extensive line of low noise amplifiers and the most economical choices.
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Product
Broadband Calibrated Noise Sources
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Fairview Microwave’s calibrated noise sources cover frequency bands from 10 KHz to 18 GHz. Their performance specifications include output ENR levels ranging from 15 dB to 30 dB and typical VSWR levels as low as 1.25:1. Depending on the model, calibrated frequency points are at 10 MHz, 100 MHz, 1000 MHz, 2000 MHz and 1 GHz steps. The temperature coefficient of these noise sources is < 0.01 dB/°C and noise output variation is < 0.1 dB/%V.
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Product
Phase Noise Analyzers
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The phase noise analyzer portfolio from Rohde & Schwarz offers an affordable, mid-range solution with high sensitivity and fast measurements as well as high-end ultra-high-sensitivity solutions with advanced measurements modes. Ideal for phase noise analysis and VCO tests, the industry-leading solutions enable two-path phase noise analysis with real-time cross correlation and fast VCO characterization with built-in low-noise DC sources. Additionally, high-end signal and spectrum analysis can be added into a single box.
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Product
Phase Noise Analyzers
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Holzworth Instrumentation, Inc.
Holzworth's Real Time Phase Noise Analyzers are each designed to provide data faster than any other system, while maintaining data accuracy and repeatibilty. There is no guess work as to whether results are valid to the DUT or if there are unwanted variations or contributions coming from the measurement system itself.
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Product
Sound Level Meter - For Workplace And Environmental Noise
SONIK-SE
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The SONIK-SE is a powerful sound level meter which is ideal for performing occupational and environmental noise assessments for a variety of applications.
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Product
dBAlert Personal Noise Warning Unit
GA907
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dBAlert! activates only when the noise exceeds a pre-set level, warning exposed workers that noise levels have become dangerous and to put on their ear-defenders.
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Noise Generators
GShM Series
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*Operating temperature: +15...+25°C*Detection error for excessive relative noise temperature: +/-0.4 dB*Power consumption — <35 mA
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Permanent Outdoor Noise Monitor
NMS043
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For permanent and semi-permanent outdoor noise monitoring where remote access is required, the NMS043 is an excellent choice. When you need online access to noise data for monitoring construction noise, nuisance noises, transportation noise or other unwanted noises, the NMS043 will reliably do the job.
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Minimal Signal Noise
SCSI Quiet Cables
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Paralan Corporation was one of the first companies to recognize that 90% of the problems with SCSI Bus installations lie with the cables. To address this problem, Paralan developed its own line of high-quality shielded Quiet Cables.
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Broadband Coaxial Noise Sources
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Our integrated noise modules contain all the required biasing circuitry and only need a positive voltage to activate for an easy installation. Since they typically do not contain amplification, the raw noise output from the diode is seen at the output of the module resulting in a maximum ENR of approximately 35dB. Primary applications include system built-in test and laboratory use.
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Product
E-Band Low Noise Amplifier MMIC
AWL-7186
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The AWL-7186 is a 4-stage ultra-low noise amplifier that provides a noise figure of less than 3.5 dB, an output P1dB of +8 dBm, and an adjustable gain range of 15 dB. The MMIC features exceptional gain flatness and superior noise performance over a very wide bandwidth. It is implemented in 0.1 um GaAs PHEMT technology.
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Product
Phase Noise Measurement Up To 125 GHz
S930321B
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S930321B enables phase noise measurements using a PNA or PNA-X vector network analyzer. Simplify your measurement workflow by measuring phase noise on the same connection as your network analysis measurement of 2-port active devices up to 125 GHz, without needing to connect a spectrum analyzer or harmonic mixer.
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SNS Series Noise Source 10 MHz to 18 GHz (ENR 6 dB)
N4000A
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The SNS series N4000A noise source is designed for accurately measuring devices with low noise figure, with a frequency range of 10 MHz to 18 GHz and nominal ENR 6 dB.
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Product
Phase Noise Measurement Application
N9068A
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One-button measurements for analyzing phase noise in frequency domain (log plot) and time domain (spot frequency)Compatible with phase noise measurement personality in Keysight PSA and ESA spectrum analyzers Runs inside the PXA, MXA, EXA signal analyzers and MXE EMI receiver
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Noise Activated Warning Signs
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Signs within the workplace that warn of high noise levels are common place as they help ensure that employees, visitors and the public are aware and, if required, wearing ear protectors. This type of signage is ideal when noise levels are stable and consistent.





























