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Noise Sources
create signal disturbances for the purpose of noise instrument calibration.
See Also: Pink Noise, Noise Generators
- Applied Instruments, Inc.
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RF Noise Source
NS-3
The NS-3 Broadband RF Noise Generator provides an extremely flat AWGN (Additive White Gaussian Noise) signal from 5 to 2150 MHz. The output level adjusts in 0.1 dB steps over a 30 dB range.The bench-top configuration is standard and an optional two unit rack enclosure is available. The RS232 or USB remote control interface simplifies its use in automated test and factory ATE environments. The NS-3's combination of range, versatility and value make it the ideal general purpose broad-spectrum signal source for bench and ATE applications, including C/N, BER, MER, PER testing and rain fade simulation.
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Microphone Array System for Noise Source Identification
Noise source identification of large-scale machinery is a tough issue. If you don’t know the noise source, you cannot find out methods of improving you products. Microphone array, or acoustic camera, is an advanced technology for noise source identification in steady, non-steady, motion, or rest state. A microphone array system can display noise source distribution in real time, and identify the locations of noise source inside the equipment
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Audio Analyzers
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.
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High-Density Precision SMU (100 PA, 30 V)
PZ2130A
The Keysight PZ2130A is a high-channel density precision source / measure unit (SMU) with 5 channels per module that saves space at a low cost per channel for a wide range of applications requiring numerous precision power supplies. Its seamless current measurement ranging function eliminates the time it takes to change the range and expands the dynamic range to cover multiple measurement ranges, which reduces test duration. These capabilities make the PZ2130A suitable for applications that require numerous precision power supplies, such as semiconductor reliability tests and integrated circuit (IC) tests. The Keysight PX0107A low noise filter adapter lowers its voltage source noise level, which makes the PZ2130A suitable for noise sensitive applications such as quantum computing as well.
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Digital Audio Snake System
OmniSnake
The OmniSnake consists of a Stage Box that converts microphone/line-level analog inputs to a multiplexed digital signal, and a companion Base Unit that de-multiplexes to provide individual outputs. Digitizing the analog audio at the source eliminates the potential for ground loops, noise interference and crosstalk. Each Stage Box has 8 inputs, and two Stage Boxes can be linked together via coax to form a combined 16 channels, which is carried over coaxial cable to the Base Unit.
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Noise Figure Analysis Using NI PXI RF Test Instruments
NI-RFmx Noise Figure
Measure noise figure, gain, Y-factor, effective temperatures, hot and cold power, and moreOptimized calibration and measurement routines for multi-DUT test using Y-factor and cold sourceSupports the PXIe-5668R 26.5 GHz VSA, the PXIe-5698 26.5 GHz preamplifier, and VSTsDesigned for use with industry-standard noise sources such as the Noisecom NC346 Series
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Automated Fibre Loss Test Set
LTS-1500
The LTS-1500 is a small, rugged automated fiber optic loss test set that characterises singlemode fiber links at wavelengths of 1310, 1490 and 1550 nm. It is comprised of a sensitive InGaAs based optical power meter calibrated at six wavelengths with better than -75 dBm noise level plus a stabilised laser light source with up to three selectable wavelengths.
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OPTICAL PHASE NOISE TEST AND MEASUREMENT SYSTEM
OEwaves’ HI-Q® Optical Test Measurement System utilizes a homodyne methodology for automated measurement capable of testing ultra-low phase noise laser sources. The user friendly test system is capable of rapidly measuring laser phase noise and estimating its FWHM linewidth down to < 3 Hz without complex setup or reference lasers normally required to make such a narrow linewidth measurement.
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High Power Noise Sources
NS-7001
The NS-7001 is high-power noise source specifically designed to operate in the 2.11-2.17 GHz UMTS band. It features flat output power that is regulated over a wide temperature range with high rejection outside the operating band of interest. Logic control is provided to enable/disable the noise source and an internal BIT function continuously monitors the output power. Other frequency bands and power levels are available.
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Active Differential Probe, 100 kHz to 12 GHz
U1818B
The Keysight U1818B 100 kHz to 12 GHz active differential probe makes it easy to perform high frequency in-circuit measurements using network, spectrum and signal source analyzers. With flat frequency response, low noise floor, and direct power from instrument connection, the U1818B allows measurements to be made while taking full advantage of Keysight's RF analyzers dynamic range.
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Phase Locked Loop with Integrated VCO
PLL with integrated VCOs provide local oscillator sources and clock sources for communications (COMMS) , test and measurement (ETM) and aerospace/defense (ADEF) applications. ADI's PLLs with integrated VCO portfolio includes both narrowband and wideband parts, supporting frequencies up to 13.6GHz. Our PLLs with integrated VCO, as well as our full PLL portfolio including integer-N and fractional-N PLLs, feature best-in-class performance for phase noise, jitter, and spurious, and also feature high levels of integration in small form factor packages.
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Gas Filter Correlation Carbon Dioxide Analyzer
Model T360
The Model T360 CO2 analyzer measures Carbon Dioxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high-energy IR light source is alternately passed through a CO2 filled chamber and a chamber with no CO2 present. The light path then travels through the sample cell, which has a folded path of 2.56 meters.The energy loss through the sample cell is compared with the reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing excellent performance over a wide concentration range.All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T360 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software.
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1000W Ferroresonant Power Supply
Series PRR
Kepco's PRR are 1000 Watt rack mounted laboratory systems power supplies that offer the low cost and very high dependability of ferroresonant voltage stabilization.The ferroresonant stabilizing technique provides extraordinary isolation from a wide variety of source noise. It is inherently short-circuit proof and cannot expose delicate loads to overvoltage hazards. Hence no crowbar, fuses, or bounding circuits are needed. Ferroresonant power supplies use no noise-producing switches or oscillators. Voltage setting is independent of delicate control settings or diode references and requires no comparators, references, or limiters. Efficiency is 70-80%.
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Noise Source, 10 MHz to 18 GHz, nominal ENR 6 dB
346A
The Keysight 346A noise source is the ideal companion to Keysight's noise figure solutions. Since it is broadband (10 MHz to 18 GHz), it eliminates the necessity for several sources at different frequency bands. The low SWR of the noise source reduces a major source of measurement uncertainty; reflections of test signals. The very small change in reflection coefficient (<0.01) from ON to OFF is designed especially for accurate characterization of input-impedance-sensitive devices (like GaAsFETs and many UHF amplifiers).
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Triple Output DC Power Supply, 30V/6A (2x) & 5V/3A; 375W
U8031A
Keysight now extends its range of basic DC power supplies to offer 375watt power range, making it an ideal power source alternative in electronics manufacturing, research and development as well as the education sector. The U8031A, basic DC power supply, is a manual triple-output power supply with sequencing capability. With this function, users can generate output sequences with minimal programming skills. Each power supply is also built with excellent load regulation and clean output noise for continued stability. With these and many other features, you get a solid and reliable triple-output power supply at an unsurpassed performance.
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Microwave Wideband Externally Modulated Transmitters (without RF Amp)
MT80 (30KHz~40GHz)
Hangzhou Huatai Optic Tech. Co., Ltd.
MT80 series microwave optical transmitter, adopts external modulation technique, are able to transmit 40GHz microwave RF signal with long distance, wide bandwidth, and flat responsibility. They provide an outstanding linearity fiber optical communication for analogue and digital wideband microwave application. Due to avoidance of using expensive coaxial cable or wave guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless; timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s and 40Gb/s high speed communication system. MT80 adopts low noise, narrow linewidth CW DFB laser as light source; LiNbO3 external modulator as signal modulation, no laser chirp, low dispersion distortion, high extinction ratio, Full-transparency operation mode. It can be applied in long distance and extra-long distance transmission after EDFA.
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Directional Detectors
KRYTAR offers the industry's widest selection of Directional Detectors 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. Complete engineering services for custom designs that meet or exceed critical performance and/or packaging specifications are available.
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Triple Output DC Power Supply, 60V/3A (2x) & 5V/3A; 375W
U8032A
Keysight now extends its range of basic DC power supplies to offer 375watt power range, making it an ideal power source alternative in electronics manufacturing, research and development as well as the education sector. The U8032A, basic DC power supply, is a manual triple-output power supply with sequencing capability. With this function, users can generate output sequences with minimal programming skills. Each power supply is also built with excellent load regulation and clean output noise for continued stability. With these and many other features, you get a solid and reliable triple-output power supply at an unsurpassed performance.
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Noise Sources
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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Power Module Tester
The Power Module Checkout ATE is developed for testing DC-DC Power modules typically utilized in India's space program. The DC-DC converters are exhaustively tested for all design parameters including supply voltage range, line and load regulation, efficiency, ripple, noise, transient response and so on. Special power sources and loading mechanisms are deployed to enable testing of various types of power modules.
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Electronically Tunable Filters
ETF
Radar. Communications. EW/SIGINT. Frequency agile channelization. Frequency agile noise rejection filter. Local oscillator tracking filter. Controlled bandwidth and center frequency noise source.
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Broadband Planar Tunnel Diode Detectors
KRYTAR Broadband Planar Tunnel Diode 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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Tone Generator
A15TG
The Shure A15TG Tone Generator is a battery-powered 700 Hz signal source used to troubleshoot audio systems by checking microphone lines for correct patching and detecting unusual noise that is present. The output level of the A15TG is approximately 42 dBV.
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Noise Source, 10 MHz to 26.5 GHz, nominal ENR 15 dB
346C
The Keysight 346C noise source is the ideal companion to Keysight's noise figure solutions. Since it is broadband (10 MHz to 26.5 GHz), it eliminates the necessity for several sources at different frequency bands. The low SWR of the noise source reduces a major source of measurement uncertainty; reflections of test signals. Option K01 is a coaxial noise source and features coverage from 1 to 50 GHz with a 2.4 mm coaxial connector.
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Electronic Stethoscopes
Electronic Stethoscope Standard Headphones are designed to help locate the source of excess bearing and machine noise easily at low cost, it is an ideal easy to use listening device for mechanically generated noise in all types of applications, the 3.5mm jack socket tape output can also be fed into an audio tape recorder to store the data for either further analysis or as a reference for future comparison.
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High-Power Noise Sources
These modules not only contain the noise diode circuitry, but also gain stages to boost the output power. While lower frequencies (under 2 GHz) are most common, Mercury produces powerful amplified noise modules up to 18 GHz. Noise modules are available in coaxial, surface mount and pin type construction. TTL control options are available.
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Precision Current Sources
HighFinesse Precision Current Sources have been developed for experiments and quantum technologies in the areas of cold-atom and solid state physics. The linearly regulated BCS (Bipolar Current Source) and UCS (Unipolar Current Source) series deliver highly stable, low noise source currents for high precision magnetic field control. The current output is floating or is on a used defined potential. Ultrafast response to control signals and trigger functions, clear grounding, connection and signal isolation schemes make the integration of the current sources into complex experimental systems easy.
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6.5 Digit Low Noise Power Source
B2960 Series
The Keysight B2960 Series 6.5-digit low noise power source are a new generation of power sources offering precision, wide bipolar output ranges, and other innovative features such as graphing capability and arbitrary waveform generation capability, enabling test and evaluation that conventional power sources cannot do.
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Gas Filter Correlation Carbon Monoxide Analyzer
Model T300
The Model T300 measures low ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high energy IR light source is alternately passed through a CO filled chamber and a chamber with no CO present. The light path then travels through the sample cell, which has a folded path of 14 meters. The energy loss through the sample cell is compared with the span reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing extreme sensitivity. All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information, is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T300 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software.
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160W DC Programable Power Supply
*Source effect: CV≤0.01%+3mV(mA)*Load effect: CV≤0.01%+3mV(I≤3A) CC≤0.2%+3mA(I≤3A) CV≤0.02%+5mV(I>3A) CC≤0.2%+5mA(I>3A)*Ripple and noise: CV≤1.0mVrms(I≤3A) CC≤3mArms(I≤3A) CV≤2.0mVrms(I>3A) CC≤6mArms(I>3A) *Protection Type: Overcurrent Protection (OCP) Overvoltage Protection (OVP)* Display accuracy: Voltage indication accuracy: ± (0.5% + 2 words)
