Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Decibel Meters
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A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound. The sound is then evaluated within the device and acoustic measurement values are displayed. Here at PCE Instruments, we offer two types or classes assigned to decibel meters: type 1 / class 1 or type 2 / class 2. For assessing noise in basic industrial, commercial, educational, recreational or residential applications, a type 2 / class 2 decibel meter usually will suffice. For precision-grade assessments often made in a laboratory, a type 1 / class 1 sound level meter primarily is used.
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Product
Power Rail Probe, 6 GHz
N7024A
Oscilloscope Probe
The N7024A power rail probe is for users making power integrity measurements that need mV sensitivity when measuring noise, ripple and transients on their DC power rails. The probe is designed for measuring periodic and random disturbances (PARD), static and dynamic load response, programmable power rail response, and similar power integrity measurements. Many of today’s products have tighter tolerances on their DC power rails than the previous generations of these products, and the N7024A power rail probe is designed to help users ensure their products meet these tighter tolerances.
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Sound Level Meters
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A sound level meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound. The sound is then evaluated within the sound level meter and acoustic measurement values are shown on the display of the sound level meter. The most common unit of acoustic measurement for sound is the decibel (dB); however, some sound level meter devices also determine the equivalent continuous sound level (Leq) and other acoustic parameters. With a portable sound level meter, industrial hygiene and workplace safety professionals can measure sound levels in multiple locations to ensure environmental conditions fall within recommended exposure limits (RELs). Some sound level meter devices can be permanently installed for continuous monitoring of sound levels at a work or job site.
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Integer-N PLLs
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Analog Devices’ leading PLL synthesizer family includes single and dual PLLs, as well as fractional-N and integer-N, and highly integrated PLLs with VCOs. They feature best-in-class performance, phase noise, and integration.
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Product
USB 3.0 And RJ45 Cat6 To VTAC Interface
YAVAM852
Interface
USB and RJ45 sockets to VTAC VPC contactsHigh speed interface between connectors up to 1GbpsAvoids noise and interferences on signals thanks to VTAC contacts technology
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Bench Power Supply, Adjustable, Fixed, 3 Output, 0 V, 32 V, 0 A, 3 A
72-13600
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*Triple channel linear DC power supply*Dual channel adjustable & one channel fixed*Constant current & constant voltage operation*Forced ventilation & temperature cooling system*LED digital tube display shows voltage and current simultaneously*Low ripple & low noise, output on/off control*Overload and reverse polarity protection*115VAC/230VAC (50Hz/60Hz) AC input voltage and 0.01% high regulation*12-month limited warranty *view Terms & Conditions for details
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Signal Analyzer
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bsw TestSystems & Consulting AG
The simplest way to measure the phase noise is to compare the Device-Under-Test (DUT) to the source of a spectrum analyzer. With the SA set at the same frequency as the OUT, you see the sum of the SA's and DUT's sideband-power spectrum on the SA display. It is a simple and straight forward method well suited for free running VCO's where the SA is easily an order better.You can improve on this method by establishing a Phase Lock (PLL) between the DUT and the Local Oscillator and create a zero-IF or base-band spectrum analyzer system.
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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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RF Downconverters
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SignalCore offers traditional multi-stage and single-stage RF downconverters, and Direct IQ demodulators that feature low phase noise, high dynamic range, wide bandwidth, and continuous tuning. SignalCore RF downconverters are compact and built for mechanical robustness and ruggedness. Applications include various test and measurement applications such as those in spectral monitoring, signal intelligence, ATE, and software-defined radio. All products are provided with a Graphical User Interface (GUI), driver, and API for easy programming control.
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Product
Downconverter
DOWNCONVERTER 10 GHz VXI
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The DOWNCONVERTER 10 GHz design assumes its use in closed mobile complexes for field testing of communications equipment. To do this, the device has applied advanced solutions to reduce the phase noise of the output signal in conditions of increased vibration and temperature. The device has a temperature-stabilized reference frequency generator with the ability to output a reference frequency signal. Also, it is possible to operate from an external reference generator.
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Product
Single Axis AC Magnetic Field Sensor
MGC-1
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Macintyre Electronic Design Associa
The MGC-1 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-1 amplitude response is insensitive to the frequency of the field over its 5 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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Zero Bias Schottky Detectors
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Fairview Microwave’s line of coaxial packaged zero bias Schottky detectors feature matched inputs for excellent VSWR, voltage sensitivity levels that range from 100 to 500 mV/mW for small signal detection, negative video output polarity, and can withstand maximum input power levels up to +20 dBm CW. Operating temperature range covers 0°C to +90°C and storage temperature of -65°C to +125°C. These zero bias Schottky detectors utilize compact cylindrical package outlines that are made of passivated stainless steel and offer a variety of popular input/output SMA and BNC connector configurations that make them ideal for use with precision test and measurement, instrumentation, and subsystems assemblies. Numerous applications include power measurement, leveling pulsed signal sources, AM noise measurements, radar or missile guidance systems, monitoring system level performance, and pulsed RF measurements.
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Cable Connectors & Adaptors
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After many years supplying high qaulity signal conditioning instruments we understand the need to use high quality cable connectors & adaptors. The connectors used by Kemo on its cable assemblies are fitted by engineers with years of experience. This attention to detail ensures quality signal transmission and minmial noise within the signal path.
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Frequency Dividers
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Holzworth Instrumentation, Inc.
The HX4210 was designed as a reference output translator for Holzworth's early RF Synthesizer designs. The key design requirement was to maintain the low phase noise /jitter characteristics the 100MHz calibrated reference output signal so that it could be utilized as a 10MHz laboratory reference standard.
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Slip Ring Tester
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The SRT is an automatic test system offering fast and accurate measurement and reporting of noise, contact resistance and insulation resistance. It’s been designed to improve QA for manufacturers of slip rings, commutators, rotary connectors. It can also be used to test devices coming back for repair and overhaul.
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Free Space Optical Receivers
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These optical receivers have bandwidths in the DC to GHz range for detecting high speed free space optical signals with the lowest noise and cleanest responses possible.
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RF Amplifier Modules
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Analog Devices RF amplifier modules offer high linearity, low noise figures, and low phase noise, as well as low power consumption. These devices are all fully specified over frequency and temperature for use in a variety of applications.
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Rechargeable Battery Telemetry Systems
2100R Series
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Advanced Telemetrics International
Offers more performance and features while providing solutions to common shaft mounted obstacles. Separate but simultaneous data and status signals allow a variety of control functions independent of the high quality data stream ATi is known for. Battery power means lower noise floors, more versatile installations, no active power generation or tuning.
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Single Photon Detector System For Near-Infrared (1.6-2.3 Um Wavelength) Waves With Liquid Helium (LHe) Cryostat
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Insight Product Company is proud to offer Single Photon Detector System for Near-Infrared (1.6-2.3 um wavelength) with Liquid Helium (LHe) Cryostat. Insight Product Co. offers superconducting single photon detectors and ultra-low noise registration systems for the near infrared range. All systems operate in continuous mode, no gating required.
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Up & Down Converter/RF Suite
DNA
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DNA is one of the most effective phase noise and frequency stability analysers on the market. It is based on a unique digital architecture that reduces thermal noise and obtains top performance in terms of near phase noise, with a limit set by a user reference clock. DNA also includes in-built oscillators for advanced autonomous operation.
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Traveling Wave Tube Test System
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Yelo has a wealth of experience in developing and customizing test systems for the Travelling Wave Tube (TWT) market. TWT testers feature specialized power supplies, measurement equipment, and comprehensive control and safety systems.A rugged PLC is used to control all voltages and perform all monitoring functions. User interface and datalogging functions are provided by a supervisory PC that is electrically isolated from the PLC. Power Supplies are solid state with optical fibre barriers to ensure that all control/monitoring is carried out at safe voltages, and with maximum noise immunity. All safety interlocks are hardwired, and the testers are equipped with emergency shutdown features for added security.
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Infrared Motion Sensor
ENVIROMUX-IMD
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Registers movement in the area covered. Condition display via LED. Provides immunity from common-mode signals such as the effect of strong hot or cold air currents, variation in ambient temperature, background radiation and acoustic noise. 24 dual-element detection zones for long, mid and short range protections. Surface or corner mounting. Pulse count or single shot triggering. Good RFI protection. Screw terminal. To connect to the RJ45 inputs use CAT5/5e/6 cable terminated at one end with RJ45 connector. Connect the un-terminated end to the sensor screw terminal. Maximum cable length: 1,000 ft (305 m). Powered by ENVIROMUX-2D/5D/16D. Includes mounting bracket for installing the sensor to a ceiling or wall. Regulatory approvals: CE, RoHS.
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Audiometric Rooms - G Series Panel System
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Eckel Noise Control Technologies
Eckel offers a wide range of standard rooms and custom-made suites to meet audiological clinical and research requirements. All combine high performance, versatile design and economy. Eckel acoustically engineered G-Panel construction affords excellent noise reduction. Choose from 19 demountable (G-Series panels) standard models and custom-made rooms for your specific needs. Rooms are easy to install, easy to take down and move.
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Load-Free Dynamometry Tester
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Shanghai Aoboor Electric Co., Ltd.
DC permanent magnet brushed motor. Load-free dynamometry, and also electric strength, current ripple analysis, vibration, noise, lable print & check, Data upload to server and all other FAT and management items.
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Testing of Rear Axle Steering
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*2 high-precision servo axes for linear load simulation*Communication via CAN / Flexray*Function and noise measurements (NVH)*Supply and discharge of the test specimens via WTs on double belt conveyors*Connection to the production control
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RF Front-End ICs
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Analog Devices offers RF Front-End ICs for phased array antenna solutions. These RF Front-End ICsare placed right at the antenna element and can quickly switch between transmit and receive functions in radar applications. The power amplifier on the transmit side is highly efficient operating in short pulse durations. The low noise amplifier on the receive side has a low noise figure with high linearity so that it won’t distort the incoming return signal. The RF Front-End IC also incorporates a high performance switch to toggle between the transmit and receive paths. Highly integrated planar phased array antennae need small form factor solutions, and Analog Devices has integrated the switch, low noise amplifier, and power amplifier into a small surface mount package as well as the decoupling capacitors, providing an optimal solution.
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CMOS Standard Image Sensors
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The vision market is constantly looking for highly specialised, cost effective solutions where performance is not compromised. Teledyne e2v has over 40 years of heritage in imaging, with a background in the design and manufacture of CCD and CMOS image sensors.Capabilities include ultra-high speed and ultra-low noise. Teledyne e2v’s unique approach involves listening to the market/application challenges of customers and partnering with them to provide an innovative solution which brings real value to their systems.
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Digital Oscilloscopes
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SIGLENT digital oscilloscopes provide the perfect balance between features and price. With bandwidths from 50 MHz to 2 GHz, low noise vertical scales down to 500 uV/div, and features like Eye diagram / Jitter analysis, serial decoding and MSO capabilities, SIGLENT will quickly become your scope of choice.
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Aluminum-Polymer
OS-CON™
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Panasonic Industrial Devices Sales Company of America
Panasonic's OS-CON™ Aluminum-Polymer Solid Capacitors are available in both surface-mount and through hole types. These Solid Electrolyte Aluminum OS-CON™ Capacitors utilize aluminum and a highly conductive polymer material to offer low ESR, excellent noise reduction and ripple current capabilities. The OS-CON Series parts are characterized by a long-life and minimal ESR changes throughout the entire product line’s rated temperature range.
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VHF/UHF Handheld Signal Location Antennas
Type NVF-2
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The Type NVF-2 series of handheld directional antennas are used to locate interfering signals or noise in either the 420 – 470 MHz (Type NVF-2A) or the 900 MHz ISM band or cellular telephone bands (Type NVF-2B). Both models incorporate a solid reflector positioned behind a resonated half wave driven element, both elements being mounted on a fiberglass rod with an integral pistol grip. The configuration of the reflector and driven element are such that a deep null in the signal being received will occur when the antenna is pointed in the direction of the signal being radiated. A T-pad resistive attenuator is also incorporated in the antenna mounting enclosure to aid in the direction finding process on very strong signals or when excessive reflections present multiple returns.
