Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Burst-Generator
SFT 1420
The test generator SFT 1420 simulates quick transient noise interference as they are defined in the standard IEC / EN 61000-4-4. The single pulses show a very short rise-time (5 ns) and due to this a wide RF-spectrum up to 300 MHz. RF interferences are the result.
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Noise and Vibration Testing
Electronic Systems of Wisconsin, Inc.
ESW's unique Noise & Vibration Test Systems come fully equipped with the latest industry features. The on-screen operator display in our testers make it easy to set-up, read, track and record your noise or vibration information. We work directly with you to determine the best solution that will work for your application. Our data logging make sure that important data is stored and available for download for future reference. ESW's design engineers work to make sure the testing interface is easy for your operators to use. We work closely with our customers to make sure that your unique testing needs are met. Please see the slideshow below to see some of our Noise & Vibration Testers.
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Sound Level Indicators
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.An important attribute to consider when searching for a suitable sound level meter is its type or class. The type or class of a sound level meter defines the device's accuracy as per American National Standards Institute (ANSI) or International Electrotechnical Commission (IEC) guidelines. Typically, "type" is the grade according to the ANSI S1.4 standard, whereas "class" is the grade according to the IEC 61672 standard. There are two types or classes assigned to sound level 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 sound level meter usually will suffice. For precision-grade assessments often made in a laboratory, a type 1 / class 1 sound level meter primarily is used. PCE sound level meter products are lightweight, easy-to-use and manufactured in accordance with the highest industrial standards.
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Handheld RF Spectrum Analyzer With 10MHz To 3.6 Or 6.0GHz Bandwidth Options
PSA Series 5
10MHz to 3600MHz or 6000MHz frequency rangeResolution bandwidths from 300Hz to 10MHz (1:3:10)-120dBm typical noise floor at -40dBm ref. level/10kHz RBWMeasurement in dBm or dBµV, mV or µWZero span mode with AM and FM audio demodulationTrace modes of normal, peak hold and trace averageLive, View and Reference traces in contrasting coloursTwin markers with readout of absolute & difference valuesSmart marker movement with selectable peak trackingFrequency counter with down to 10Hz resolutionFrequency presets and independent state storageAuto-find automatically sets sweep parameters for the highest signal foundUnlimited storage for waveforms, set-ups and screensUser assignable file names, file stamping from real-time clockUSB interfaces for Flash drives and PC connectionComprehensive status and context sensitive help screensRechargeable lithium ion battery giving more than 3 hours continuous operation from a chargeSmaller and lighter than other spectrum analyzers (weight only 0.56 kg)
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Event Detectors
STD Series
The STD Series Event Detectors offer test specifications associated with solder joint reliability testing but can also be used for testing other types of interconnects accordingly. Like other Event Detectors, the STD series provides continuous transient resistance detection referenced to a selected threshold resistance with a high degree of electrical noise immunity.
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Precision Pink Noise Generator
Noise Plug
The NOISE PLUG is a complete precision pink noise generator built in a XLR microphone connector. Inside the NOISE PLUG is an ultra wideband, avalanche junction white noise source.
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Ethernet/LXI digitizerNETBOX 16 Bit High Speed Digitizer - 250 MS/s on 16 Channels, 16 Single-Ended Inputs
DN6.442-16
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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PXIe-4499, 204.8 kS/s, 114 dB, 4 Gains, AC/DC-Coupled, 16-Input PXI Sound and Vibration Module
781370-01
204.8 kS/s, 114 dB, 4 Gains, AC/DC-Coupled, 16-Input PXI Sound and Vibration Module - The PXIe‑4499 is designed for high‑channel‑count sound and vibration applications. With 24-bit analog inputs and IEPE constant current signal conditioning, the PXIe‑4499 is ideal for making precision measurements with microphones, accelerometers, and other transducers that have very large dynamic ranges. The PXIe‑4499 delivers simultaneous sample on all channels. In addition, the PXIe‑4499 includes built-in antialiasing filters that automatically adjust to your sample rate, software-selectable input gains, and TEDS smart sensor support for error-free setup. Common applications include noise, vibration, and harshness (NVH) analysis; large microphone arrays; and dynamic structural test.
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Handheld Digital Spectrum Analyzer
WSUB1G
Frequency band: 240 - 960 MHzFrequency span: 112KHz - 100MHzGraphics LCD 128x64 pixels, great visibility outdoorsPC Windows client supports Windows XP/Vista/Win7 both 32 and 64bitsBacklight for great indoor visibilityStandard SMA 50 ohms connector, wideband Nagoya NA-773 telescopic antenna includedAmplitude resolution: 0.5dBmDynamic range: -115dBm to 0dBmAbsolute Max input power: +5dBmAverage noise level (typical): -110dBmFrequency stability and accuracy (typical): +-10ppmAmplitude stability and accuracy (typical): +-3dBmFrequency resolution: 1KhzResolution bandwidth (RBW): automatic 2.6Khz to 600KhzWeight: 185gSize: 113x70x25 mm
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complete 1/2 inch Type 1 Measurement Microphone System
PS9200KIT
A complete 1/2 inch Type 1 measurement microphone system. Available in 1 Inch and 1/4 Inch versions. The heart of the KIT is the 1/2 inch Type 1 measurement microphone. A selection of 4 different 1/2 inch capsules is offered. These include models with frequency responses to 40 kHz, noise floors of 12 dBA in both free field and pressure versions. Microphone sensitivities range from 12 to 50 mV/Pa.
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Powered NIM Crate
NIM 6000 Series
The WIENER NIM 6000 series combines the technical advantages of the VME 6000 high efficient , low noise switching power supplies with the high reliability CERN spec. conform WIENER NIM chassis. The modular concept of WIENER NIM 6000 series crates allows fan trays and power supplies to be easily inserted and removed without tools.
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Film Capacitors
Panasonic Industrial Devices Sales Company of America
Low ESR. Low Dissipation Factors. No Shock Noise. Panasonic Surface Mount Film Capacitors offer stable capacitance and temperature characteristics, tight tolerances, low ESR, low dissipation factors, no shock noise, no piezoelectric effect and no audible noise. Surface Mount Film Capacitor applications include DC blocking and filtering, PLL, audio, DC/DC converter and back lighting.
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Power Supplies
V-400
The V-400 power supplies are durable, practical, and efficient. Remove all superfluous attachments and features. The V-400 can provide reliability and 400 watts of power you can depend on to run your system. With its 80mm silent cooling fan designed for fastest cooling time and minimal noise level; you won’t have to worry about overheating and noisy fans anymore. This is the basic power supply for casual users who just needs something that is cost effective and works.
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ONU Two Output RFTV Optical Receive Module
M9226
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai M9226 optical receiving module is designed for ONU optical fiber network unit. This series of product with perfect detect and remote shutting off function adopts high sensitivity receiving tube and Huatai special low noise matching circuit. It is a kind of high index, low power consumption and high cost performance RFTV optical receiving unit.
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Balanced Optical Receivers
For noise sensitive experiments, we offer balanced photoreceivers that suppress up to 50 dB of laser / source intensity noise in experimental set-ups. These balanced optical receivers with two well-matched photodetectors can eliminate the need for lock-in amplifiers and can make all of the difference when you are trying to detect a small signal in applications like absorption spectroscopy, or heterodyne detection.
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PXIe-5654, 250 kHz to 20 GHz, PXI RF Analog Signal Generator
784776-01
PXIe, 250 kHz to 20 GHz, PXI RF Analog Signal Generator - The PXIe-5654 features a combination of exceptional phase noise and frequency tuning time. These features address applications such as blocker test/receiver desensitization, high-performance intermodulation distortion measurements, and various electronic warfare applications. The PXIe-5654 is designed to meet the challenging requirements of RFIC characterization, satellite test, and radar applications. Some PXIe-5654 options include a PXIe-5696 Amplitude Extender Module. The PXIe-5696 supports a frequency range of 250 kHz to 20 GHz and an extended amplitude range up to 27 dBm.
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Vibration Unit Tester
BK2020B
We developed the BK2020B as an upgrade to our BK2020 to test the electrical specifications (RPM, current, drop pulse, start up voltage) of your cylindrical or coin type vibration units. You can also test vibration level, noise, isolation resistance, and the DC resistance. The DUT power supply and all measurement components are self contained, so external devices aren't needed and the tester uses DSP, making it capable of fast, highly accurate and reliable measurements. The BK2020B is very versatile. It can be set up as a stand alone machine, or used with a PC and software for access to more information, and to save the data for analysis. Either version is great on the product line but you may also use it for QA, QC and development.
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Ancillaries - Radiated
EMC emissions can be at very low signal levels and pre-amplifiers can help to improve S/N ratio. The low level of emission signals can make them difficult to identify in noisy environments. RF filters are designed to attenuate the major sources of noise, thus making the task of measurement easier.
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Ethernet/LXI digitzerNETBOX 14 Bit High Speed Digitizer - 500 MS/s on 2 Channels, 2 Single-Ended Inputs
DN2.445-02
The digitizerNETBOX DN2.44x series allows recording of one, two, four or eight 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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ICE 3000 Series
ICE3001
This subsystem is an agile filter for the SATCOM frequency band, capable of acting as either a receive or a transmit filter. It enables simultaneous operation of multiple transceivers in extreme cosite environments. The ICE3001 provides multiple poles of RF selectivity to reduce broadband noise, harmonics, and spurious signals for either receive or transmit applications. This filter is a highly integrated design incorporating complete Built-in-Test capability. The design has been qualified for military applications. A dual-mount tray is also available as an option for easy incorporation on your platform. Cost-effective modifications are available on the ICE3001.
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DC Power Supplies
SGX Series
AMETEK Programmable Power, Inc.
The Sorensen SGX Series represents the next generation of high power programmable DC power supplies. The SGX Series is designed for exceptional load transient response, low noise and the highest power density in the industry. With a full 15 kW available down to 20 V output in a 3U package the SGX leads the industry in power density. The power density is enhanced by a stylish front air intake allowing supplies to be stacked without any required clearance between units.
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Powered VXI Crates
VXI-C Size 6021
WIENER C-size VXI mainframes of the 6021 deliver highest performance and reliability. Incorporating high density & lowest noise power supply technology the 6021 VXI series is the best choice for any demanding test and measurement VXI application.
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High Performance Autoranging DC Power Module, 50V, 5A, 50W
N6751A
The Keysight N6751A is a 50 W high-performance, autoranging DC power module that provides low noise, high accuracy and programming speeds that are up to 10 to 50 times faster than other programmable power supplies. Optional high-speed test extension offers an oscilloscope-like digitizer that increases measurement accuracy when viewing high-speed transient or pulse events within the device-under-test (DUT).
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14-Bit Digitizer
PA72D14130
The PA72D14130 is a 14-bit digitizer, capable of capturing waveforms at speeds up to 130Msps. An onboard offset voltage source allows capturing offset signals while still using the optimal range for maximum ADC utilization. Two onboard filters allow suppression of out-of-band noise. The 64MWord onboard memory enables capturing very long waveforms, or sequentially capturing multiple signals with minimal intermediate bus communication.
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Reference Oscillator
REF Series 0.9” x 0.9” x 0.21”
*Connectorized Package *Free Running *Low Phase Noise *Output Power to +12 dBm Available
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RF Synthesizer
Low phase noise broadband RF synthesizer module with extremely low step size and USB control.
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Ultra Low Noise, Rubidium Frequency Standard.
A10-M
Frequency Referencing, Calibration, Standards Lab, Production Test for Oscillator Manufacturers. A very high stability LOW NOISE 10MHz Rubidium Reference, primarily for production test of quartz oscillators and RF instrumentation frequency referencing. This industry standard 2U rack-mount instrument has a long heritage and ongoing production life for this latest 2009 version that features RS232 monitoring and control of the DPLL, locking the Ultra Low Noise OCXO to the Rubidium. Damping and Bandwidth is controlled by integrator digital gain, proportional digital gain, pre-filter order and subsample rate. Eight values of user selected bandwidth are available.
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Diversity Receiver
R400a
The R400a is a high performance, triple-conversion, frequency synthesized, UHF receiver fully compatible with all Lectrosonics 400 series transmitters, and a number of analog models. The proprietary audio processing includes a DSP (digital signal processor) for very low distortion and a superior signal to noise ratio. The DSP eliminates a compandor and its artifacts to provide exceptional audio quality when operating in its native hybrid mode. Special DSP algorithms also provide compatibility modes for use with Lectrosonics 100 and 200 Series analog transmitters.
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Compact Designed Chassis
CAMAC Mini Crate Series
The WIENER CAMAC mini crate is the perfect choice for small setups with only a few CAMAC modules. The crate offers 11 CAMAC slots in a compact designed chassis with integrated low noise power supply and cooling fan. The mini crate can be used on the desk either as a desktop or up-right unit or be installed in a 19” rack.
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Audio Analyzer
1121A
The Model 1121A audio analyzer provides fast, accurate measurements including frequency, AC or DC level, distortion, SINAD and signal-to-noise ratio. It also includes an audio source providing accurate low distortion signals over wide frequencies and level ranges.
