Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Product
Hand-Held Sound Level and Vibration Measurement
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Brüel & Kjær Sound & Vibration A/S
Our noise and vibration monitoring terminals and loggers are ideal for continuously monitoring real-time levels to demonstrate compliance with regulations, manage activities and limit environmental impact.
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Product
Planar Doped Barrier Detectors
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KRYTAR Planar Doped Barrier Detectors are specifically designed for use in today's high-performance microwave instrumentation and systems. KRYTAR detectors are designed for such applications as power measurements, analyzing radar performance, leveling pulsed signal sources, AM noise measurements, system monitoring and pulsed RF measurements in ultra-broadband and mm-Wave applications.
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Product
PXI/PXIe RF Multiplexer, Single 16-Channel, 3GHz, 75Ω, MCX
42-835A-101
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The 40-835A-101 (PXI) and 42-835A-101 (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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Product
Handheld RF Spectrum Analyzer With 10MHz To 3.6 Or 6.0GHz Bandwidth Options
PSA Series 5
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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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Product
Low Noise Amplifiers
WA Series
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WA series low noise amplifiers are the balance type LNA with alarm capability in some of the products. Besides offering very low noise figure and wide bandwidth, the LNA have high linearity with unconditional stable design. The noise figures are from 0.40 dB to 1.0 dB and IP3 from 30 dBm to 40 dBm.The amplifiers cover the frequency bands of VHF, UHF, Cellular, GSM, DCS, PCS, 3G, C, and wireless LAN. The built-in alarm capabilities include Branch 1 and Branch 2 alarms, Soft Failure alarm, Hard Failure alarm, Soft alarm Open-Collector, and Hard alarm Open-Collector.
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Product
Monitor / Annunciator
RTP-1
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The RTP-1 Monitor is a general purpose annunciator. Designed for 19 “ rack installations, the RTP-1 is complete with a noise immune filter. The ten point RTP-1 features latching memory. Easy to install and easy to operate, this low power monitor has front panel plug-in replaceable LEDs for indication and a single system Test and Reset buttons.
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Product
Powered VME64x Crates
9U VME64x 6023
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The WIENER VME 6023 crate series is the newest generation of 19" integrated packaging system for VME/VME64 bus systems with 9Ux400mm cards. Designed primarily for applications in data acquisition, control and test instrumentation it combines superior mechanical quality with lowest noise power supply technology.
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Product
NI-9203, 200 kS/s, ±20 mA, 8-Channel C Series Current Input Module
783731-01
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200 kS/s, ±20 mA, 8-Channel C Series Current Input Module - The NI‑9203 is intended for high-performance control and monitoring applications. It features programmable input ranges and variable connectivity options. To protect against signal transients, the NI‑9203 … includes a channel‑to‑earth ground double‑isolation barrier (250 Vrms isolation) for safety and noise immunity.
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Product
Digital VIS-SWIR Camera
OWL 1280
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Using a 1280 x 1024 InGaAs sensor from SCD, the OwL 1280 offers visible extension from 0.6µm to 1.7µm to enable high sensitivity imaging. The 10µm x 10µm pixel pitch enables the highest resolution imaging. It will offer less than 28 electrons readout noise (rms) and with a high intra-scene dynamic range of 51dB, this enables simultaneous capture of bright & dark portions of a scene. Available with a 12 bit medium Camera Link digital output, the Owl 1280 will run from 10 to 60Hz. The camera features an on-board Automated Gain Control (AGC) which enables the best contrast image from low to bright light. The camera also has an on-board intelligent 3 point Non Uniform Correction (NUC) providing the highest quality images. As with all Raptor cameras, the Owl 1280 is ultra compact and rugged. The camera sensor temperature is stabilised to 15°C and the camera does not have a fan.
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Product
PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783124-03
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Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Product
Analog-To-Digital Converters
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Teledyne e2v has been innovating data converter technologies for over 20 years and offer a range of analog-to-digital converters that feature:Latency as low as 5 nsUp to 4 channels at microwave frequenciesLowest noise vs. performance on the market at microwave frequenciesThe cutting-edge technology packed into Teledyne e2v's data converters allow our customers to significantly simplify designs with licence free, standard and customized solutions.
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Product
Selective Level Meter
Model SLM620
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- Digital Synthesized Local Oscillator- Two Selective Bandwidths : 20Hz, 3.1KHz- Wideband, Low Noise and Low Distortion Measurements- dB/dBm Operation- High Frequency Stability- Internal Calibration Facility- Recorder Outputs- Frequency Tracking Facility with Level Oscillator SLG620- Storage of Nine Spot Frequencies- Reference Level Set Facility- Autotune Feature- Operates on AC Mains or Internal Rechargeable Battery- Built in charger- Graphic LCD Display with Backlight
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Product
2D CMOS Image Sensors
Topaz
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The Topaz series of industrial CMOS sensors include 2MP (1920 x 1080) and 1.5MP (1920 x 800) resolution devices. The sensors use state-of-the-art low noise, global-shutter pixel technology to offer powerful solutions and enable compact mobile designs for many applications.
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Product
Sound Level Meters
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Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft noise.
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Product
High-Performance Autoranging DC Power Module, 60V, 17A, 500W
N6756A
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The Keysight N6756A is a 500 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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Product
C-Band Single Channel Pre-Amplifier EDFA (SPA)
HSA4300 (With SNMP)
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Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HSA4300 series is a low noise pre-EDFA which designed specifically for single wavelength optic transmission system. It is installed in the front of optical receiver, used for improving the receiving sensitivity of the optical receiver, and extending the signal transmission distance.
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Product
Narrow Band Filters (Single Octave)
NANO-POLE® Series
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The NANO-POLE® is designed for optimal size, DC consumption, RF power handling, insertion loss, signal purity and linearity. The NANO-POLE® provides a minimum center frequency step size of 10 MHz typically but can be modified based upon request. The NANO-POLE® requires a +3.0 V supply that typically draws 5 mA when not hopping. The supply voltage should be adequately filtered as noise present on this pin will influence the RF signal purity. The NANO-POLE® uses SPI control interface.
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Product
Oscilloscope
RTA4000
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Designed with top class signal integrity and responsive ultra-deep memory, the R&S®RTA4000 brings the power of 10 to a new level. The Rohde & Schwarz designed 10-bit ADC plus class-leading noise and memory depth provides sharp waveforms, more accurate measurements and confidence when facing unexpected measurement challenges.
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Product
Laboratory EM current meter / water level and wave height meter
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ACM2-RS and ACM3-RS are 2-D and 3-D electro-magnetic current meters for laboratory experiments. The models provide digital output, a high-speed sampling rate and insusceptibility to electro-magnetic noise. ACH-600RS is a highly sensitive capacitance water level meters. With the new system, a maximum of four different sensors can be connected to the compact interface unit, enabling simultaneous recording on a personal computer. Additionally, the system can provide analog output as well as necessary. While conventional water level and wave height meters cannot be used near velocity sensors, our instrument can be as near as 5 cm without increasing noise, due to its special isolated circuit. The result is an innovative system that is capable of achieving highly accurate data.
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Product
Brake Test Systems
GIANT 9000 Series
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The major test target is to detect noise and vibrations generated by the vehicles brake. Our intention was to build a dynamometer that can operate either with brakes mounted to the complete vehicle, or with just the axle module mounted to a universal adaptor system or wheel suspensions.
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Product
Impedance Stabilization Networks
ISN
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They are required for the measurement of conducted common mode noise on Telecom Cables of Information Technology Equipment (ITE). These measurements are necessary to meet the requirements specified in CISPR 22 and CISPR 32 standards.
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Product
32-CH/64-CH Isolated Digital I/O PCI Express Card With Digital Filter
AX92351
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The AX92351 is a 64-ch isolated digital I/O PCI Express card with 2,000VDC isolation protection. This high-density digital I/O card with high-speed PCI Express x1 bus is excellent for use in applications requiring digital control or monitoring, such as semiconductor machinery, PC-based industrial machinery, programmable I/O logic control, and process status monitoring. The AX92351 features 32 isolated digital input channels and 32 isolated digital output channels with isolation protection of 2,000V for industrial applications where high-voltage isolation is required. It is equipped with a board ID feature for easy identification of multiple cards in single system. There is a digital filter function to prevent input signals from carrying noise or a chattering. Each isolated input has a sink or source current which supports dry and wet contact for maximum application flexibility. The card has a wide range of input voltage from 10 to 30V to meet most industrial application needs. The AX92351 also provides two interrupt sources on digital input channels. Digital output has open controller and supports maximum 30VDC. The read-back function is another useful function that allows monitoring each output port.
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Product
Manual Tuners
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Manual tuners are used both in the laboratory and as system components to establish or transform impedances for a number of applications. They can be used to establish optimum source or load terminations for device characterization, normalize a source or load for precision laboratory measurements and/or calibrations (noise, power, etc.), and can act as a matching transformer between a mismatched source and a mismatched load.
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Product
Solid State Voltage Injector
J2110A
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While it is possible to obtain high quality injection transformers with bandwidths as wide as 1Hz to 5MHz or more, in some cases this is still insufficient for some tests. For example a typical heater control loop might have a bandwidth of less than 1Hz while some linear regulators and opamp circuits can have bandwidths of up to 100MHz or in some cases even higher. For these applications, a solid state injector can provide the necessary bandwidth. A solid state injector can perform at DC, while the upper frequency limit is dictated by the components selected and the printed circuit board material and layout. It is possible to obtain a solid state injector with a working range of DC – 200MHz, though above 50MHz the interconnection between the injector and the circuit being tested can become quite critical. It is essential that ripple from the injector power supply does not dramatically degrade the dynamic range or the signal to noise ratio of the measurement. The resulting plots are often much cleaner when using a solid state injector than with a transformer injector.
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Product
Noise Receiver Modules And Noise Switching Modules
MT7553 Series
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Noise Parameters are the non-50Ω extensions of Noise Figure, and are an important modeling and model validation tool to understand how a device-undertest’s performance changes as a function of source impedance. Noise Parameter measurements are typically performedusing a Vector Network Analyzer (VNA) to measure the S-Parameters of the DUT, and a Noise Analyzer (either Noise Figure Analyzer NFA or Spectrum Analyzer SA) to measure the noise power of the DUT. Noise parameters are calculated from a combination of knownsource impedances, S-parameters and noise powers.
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Power Supplies
V-400
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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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Product
Programmable Multi Output DC Power Supply
LQ6324P
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- Multi Output Linear DC Power Supply- Digitally Controlled Output Settings- Store / Load 10 Sets of Output Settings in Internal Memory- USB Interface Provided- Programmable Arbitrary Variable Output by Feeding Coefficient of the Curve- User Friendly Front End- Low Cost General Purpose Laboratory Bench Unit- Fully Protected against Overload and Short Circuit- 5V/5A with Over Voltage Crowbar Protection for Digital ICs- Three Independent Outputs Electrically isolated from Each Other- Electrically Floating Outputs up to 500V DC w.r.t. Ground- Precise Regulation, Low Ripple and Noise for Both Constant Voltage & Current Operation
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Product
Combined Environmental Reliability Test System
VTC SERIES
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HALT/HASS testing challenges the design, components, sub-assemblies and final assemblies of today's manufactured products. Stresses are applied through a number of conditions to set operational limits and ultimately precipitate failure in the HALT/HASS test environment. Rapid thermal change rate is one of the classic conditions that facilitate product stress.VTC Series chambers are equipped with an LN2 cooling system, with modulating valve and directed air flow to the product, provides the rapid thermal change rates required to achieve maximum product stress. Additionally, these rates are accomplished with smaller space requirements, lower audible noise, no water requirement, and lower maintenance costs than a typical refrigeration system.
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Product
Testing for Si Solar Cells Using High Performance CCD
EL Imaging Tester
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EL Testing for Si Solar Cells using High Performance CCD. The determination of luminescence (photo emissions) in solar cells is an important characterization tool. Typical solar cells often have defects which limit the efficiency or lifetime of a cell. Many of these defects are visualized with Luminescence Imaging. By using this technique, the manufacturing process can be optimized to produce better cells. Luminescence Imaging takes advantage of the radiative inter-band recombination of excited charge carriers in solar cells. The emitted photons can be captured with a sensitive CCD camera to obtain an image of the distribution of the radiative recombination in the cell. This distribution is determined by the local excitation level, allowing the detection of electrical losses, thus mapping the diffusion length of minority carriers as the emitted light is low intensity and in the near infra-red range, the CCD camera has a high sensitivity wavelength from 900 to 1100 nm with little thermal noise. This CCD camera provides excellent resolution of 1024 x 1024 pixels with a large 1μm pixel size, multi-megahertz readout speed, and robust USB 2.0 connectivity. The EL CCD Camera is the ultimate high-performance CCD camera for electroluminescence and photoluminescence imaging for Photovoltaic (PV) Cells and Modules. This camera combines low noise electronics and optimal sensitivity in NIR.
