Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Brake Noise Testing
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Brake Noise Testing - Brake Squeal AnalysisDewesoft Brake Noise testing solution, also known as Brake Squeal, is ideal for detecting and tracking noise caused by mechanical vibration in various braking systems based on the VDA 303 guideline algorithm.
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"Extremely Random" Precision Noise Generator
Model 3025
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The Model 3025, "Extremely Random"TM Precision Noise Generator supplies White and Pink Noise, and a 1 kHz reference signal. Crystal controlled - the pseudo random circuitry provides a 6.5 Day pseudo-random cycle time, assuring a "Extremely Random"TM noise source.
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Super Low Noise Amplifiers
WCA Series
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WCA series super low noise amplifiers have sub-0.5 dB noise figure at VHF band with several octave bandwidth. The amplifiers have 75 Ohm impedance.
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6.5-Digit Low Noise Power Source, 32 W, 210 V, 3 A, 2-Channel
B2962B
Low Noise Power Source
The Keysight B2961B Series 6.5-digit low noise source power supplies provide a power supply and source solution that meets the difficult measurement challenges researchers, designers, and developers face working on advanced components, circuits, and materials.
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Industry Standard in Noise Measurement
PN9000
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The PN9000 is a simple and fast Automatic Phase Noise Test System covering a very wide frequency range(2 MHz to 140 GHz). Its modular architecture allows optimum configuration, multiple measurement techniques and future growth in a compact instrument.
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High Voltage Linear Power Supplies Bipolar 4-quadrant, Analog/Digital/Local Control, Ultra Low Ripple/Noise
Series BOP-HV
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The Kepco Model BOP 500DM and BOP 1000DM are high voltage power sources, up to 500V or 1000V, respectively. These combine the capabilities of fast programmable power supplies with a Class A output stage, which can respond bidirectionally from zero. The BOP-HV can be operated in either a "voltage stabilizing" or "current stabilizing" operating mode (selectable by a front panel switch). These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.
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Low Noise Voltage Preamplifier
1201
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The Model 1201 Voltage Preamplifier with Remote Gain Programming Option (06) is usable in both computer controlled and maual applications requiring uncompromising performance.
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Impulse Noise Simulators
INS Series
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A simulator to reproduce fast rise-up noises which are generated when switching ON / OFF electric current on the inductive load. It can be used for performance evaluation of electronic equipment upon reproduction of line noises which are intruded to the power supply lines or induced noises onto the telecommunication lines.
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Turnkey Solution for Unattended Noise Monitoring
NoiseScout
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NoiseScout provides a comprehensive but easy-to-use 24/7 noise monitoring solution. Noise levels are recorded on-site by the XL2 Sound Level Meter and are available online for monitoring and download. NoiseScout is aimed at both short term noise assessments and long term monitoring applications. During acquisition, automated email alerts allow noise issues to be addressed before a non-compliance condition arises. NoiseScout displays the noise levels measured by the XL2 Sound Level Meter live in your web browser. The measurement data recorded out in the field is presented online in charts and dashboards. Multiple noise level meters can be monitored simultaneously within the map view, thus providing localized geographic visualization for all noise levels at a glance. Identified users can access all their projects, control their monitors or create basic view modes, allowing stakeholders to oversee their noise level data.
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Product
Low Noise Current Preamplifier
SR570
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Stanford Research Systems, Inc.
The SR570 is a low-noise current preamplifier capable of current gains as large as 1 pA/V. High gain and bandwidth, low noise, and many convenient features make the SR570 ideal for a variety of photonic, low temperature and other measurements.
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Noise Figure Measurements With Vector Correction
S96029B
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This software application enables high-accuracy noise figure and noise-power measurements of amplifiers. It utilizes Keysight’s unique vector-source-correction technique, which uses a source-impedance tuner to remove the effects of imperfect system-source match. This approach yields accuracy that surpasses that provided by the Y-factor method and other cold-source implementations, especially for in-fixture, on-wafer, and automated-test environments. A scalar-calibrated method is also available that offers less accuracy but is faster and does not require an impedance tuner.
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Low Noise Amplifiers
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RPG Low Noise Amplifiers are developed and manufactured using the most modern discrete components and thin film technologies, in order to cover the frequency range 50 to 350 GHz. With improved DC-supply and modern semiconductors these amplifiers not only deliver low noise performance but also broad operating bandwidth and gain flatness. These low-noise amplifiers are available as a standard product and on request as customized manufactured product.
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Linear Power Supplies Bipolar 4-quadrant, Analog/Digital/Local Control, Ultra Low Ripple/Noise
BOP Series
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Kepco's bipolar BOP power supplies are available in 100W, 200W and 400W sizes. For applications requiring higher power, see Kepco's 1KW High Power BOP. For applications requiring higher voltage, Kepco's Series BOP-HV are available in 500V and 1000V models.BOP are high speed power operational amplifiers that can be used to provide dynamically agile voltage for test and simulation. They are not general purpose power supplies. By the nature of the bipolar high speed design, they do not have any energy-storage noise discriminating output capacitors. These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.
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Low Noise Amplifiers
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Analog Devices RF amplifiers are designed utilizing the company’s leading amplifier and RF IC expertise. Our extensive family of single-ended input/output, fixed-gain amplifiers can be used from dc to microwave and include low noise amplifiers, gain blocks, intermediate frequency amplifiers, driver amplifiers, and differential amplifiers. These devices offer high linearity, low noise figures, and various fixed-gain options, as well as low power consumption; they are all fully specified over frequency, temperature, and supply voltage for use in a variety of applications.
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Noise Control And Acoustical Consulting Services
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Our acoustical consultants use the latest and most advanced noise prediction and modeling software, precision sound measurement equipment and detailed acoustical analysis that enable us to help our clients achieve their project's noise requirements and goals. Contact us before your noise challenges become noise pollution problems.
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Noise Sources
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The Keysight 346, 347 and SNS Series of noise sources work in conjunction with the NFA Series noise-figure analyzers to make noise-figure measurements from 10 MHz to 50 GHz.
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14 Slot, 3U, 350W, PXI Chassis - Low Noise Fan
40-914-201
Chassis
This PXI chassis includes all the features and performance required by the PXI standard and supports a control interface or embedded controller and up to 13 more 3U peripheral modules.
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Low Noise Amplifiers
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High-intercept and high-gain low noise amplifier modules. Wide supply voltage range. Custom designs available through LNA design services.
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JFET Voltage Preamplifier
SIM910
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Stanford Research Systems, Inc.
The SIM910 and SIM911 are low-noise, programmable preamplifiers which are ideal for a wide range of small signal applications. The primary differences between the two models are their input impedance and input noise.
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PXIe Audio Analyzer
M9260A
Audio Analyzer
M9260A is significantly different from the traditional general purpose PXI digitizer modules which are being used for today's audio measurement. In order to achieve fast test speed and high performance it comes with large one million sample arbitrary waveform buffer and one million sample "limitless" input buffer, as well as super-linear/low noise amplifiers and digital to analog converters. This enables M9260A's ultra-low residual distortion and high amplitude accuracy. M9260A is now an important part of Keysight Radio Test Solution, and may also be easily integrated into any audio related PXI test system with its developer-friendly drivers and commands.
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RF Test Spectrum Measurements over CPRI
Integris 3000
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Most modern cell tower network configurations place the Remote Radio Head (RRH) at the top of the tower and the baseband unit(BBU) at the bottom of the tower. While this configuration is advantageous for both computational efficiency and mitigation of RF loss across the cable, it means the only place along RF can be accessed is at the top of the tower. This forces field technicians to have to climb the tower to measure and debug RF noise problems.
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Product
PXIe-4330, 25 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module
781346-01
Analog Input Module
25 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module—The PXIe‑4330 is a simultaneous input module that provides integrated data acquisition and signal conditioning for bridge-based sensors. The PXIe‑4330 includes increased accuracy, high data throughput, and synchronization features, making it ideal for high-density measurement systems. To remove noise, the PXIe‑4330 offers antialiasing and digital filters per channel. Each channel also features an independent, programmable excitation voltage. Additionally, the PXIe‑4330 provides remote sensing, internal bridge completion, and shunt calibration options per channel.
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Signal Generator
8002
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25C, hysteresis eliminated. To within 10 MHz of the final frequency. Normal switching mode, SSB phase noise will be degraded in the fast switching mode.
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2 To 18 GHz 6 Channel Downconverter
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Teledyne RF & Micrrowave's Six Channel 2 - 18 GHz (RF and LO) downconverter operates with an IF of ~960 MHz, providing 25 dB of RF-IF gain, and bandwidth of ~500 MHz. This downconverter operates on a single LO at -6 dBm which is amplified, split, then again amplified to each of the 6 channels. Integrated into each channel is a range extension switch, controlled by a TTL input and adding 20 dB attenuation. Noise figure is ~ 13.5 dB and output IP3 is ~+25 dBm. The downconverter is 2- sided, hermetically sealed and designed for rugged applications.
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Noise Control And Acoustical Consulting Services
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Our acoustical consultants use the latest and most advanced noise prediction and modeling software, precision sound measurement equipment and detailed acoustical analysis that enable us to help our clients achieve their project's noise requirements and goals. Contact us before your noise challenges become noise pollution problems.
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Digital Noise Filter
DSP-599zx
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The DSP-599zx, with highly aclaimed digital noise filters, is part of the latest generation Timewave DSP filters. Incorporating the newest high speed CPU, the extra power gives the user unparalleled features and field upgradeability for the future. The new LCD display, pushbuttons, and Visible Memory let you see the exact settings of the filter. The optical encoders give the operator continuous tuning of the filters.
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Vibration / Shock / Noise & Thermal Control
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We specialise in vibration damping and shock isolation solutions for electronics and other light load applications.Our soft gel vibration damping materials are designed for isolating very light componets and extreme temperature environments.Most of our products are held in stock to support engineers with urgent vibration damping, noise control, shock isolation and cushioning impact problems.Our shock and vibration solutions are currently in use in aerospace, rail, truck, bus and handheld applications.
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mmWave and Microwave GaAs Frequency Dividers and Prescalers
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Keysight Technologies provides MMIC frequency dividers and prescalers ideal for high-frequency communications, microwave instrumentation, and electronic warfare (EW) radar system applications. These devices operate from DC to 16 GHz and provide a large input power sensitivity window and low phase noise.
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Sound Level Meters & Calibrators
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A sound level meter, also known as sound pressure level (SPL), decibel (DB) meter, noise meter or noise dosimeter is mainly used for measuring sounds travelling through air. It is used to test noise or sound levels by evaluating sound pressure. It uses a microphone to capture sound and the sound is then evaluated in the device. It is commonly used to prevent loud noises to create a better work environment.
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Noise Source Family
347
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The R347B waveguide noise source cover the R-band (26.5 to 40 GHz frequency range), while the Q347B model cover the Q-band (33 to 50 GHz frequency range), allows you to make accurate noise figure measurements on millimeter-wave devices.
