Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Product
Waviness, Roundness and Form Analyser
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SKF Condition Monitoring Center
Waviness testers from SKF allow analysis of the waviness on the components and thus give the production engineer a powerful tool to improve the production process. Because low noise and vibration of bearings is becoming more important, there is a high demand on the measuring accuracy and resolution.
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Product
AC/DC High Sensitivity Clamp-On Current Probe
N7026A
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The Keysight N7026A is a 150 MHz bandwidth, active current probe for InfiniiVision and Infiniium oscilloscopes. The probe features wide and flat bandwidth (DC-150 MHz), lower noise (<250 µArms), and wide input range (up to continuous 30 Arms or non-continuous 40 Apeak). This enables you to measure down to 1 mA/div, giving you a much more accurate view of your low-level signals.
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Product
Power Line EMI Adapters
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How much EMI noise is on your power lines indeed? How to assess the levels of noise and its properties when it is obviously a bad idea to connect your oscilloscope or a spectrum analyzer directly to your power lines?Our EMI interface adapters provide a barrier for high mains voltages but a straight passage for high-frequency signals so that you can connect your sensitive instrument to power lines for analysis and quantification. We offer plug-in and hand-held adapters which can measure both differential ("normal") and common-mode noise.
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Product
USB-8451, 250 kHz I2C, 12 MHz SPI I2C/SPI Interface Device
779553-50
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The NI USB‑8451 is a master interface for connecting to and communicating with inter-integrated circuit (I2C), System Management Bus (SMBus), and serial peripheral interface (SPI) devices. With plug‑and‑play USB connectivity, the USB‑8451 is a portable solution to communicate with consumer electronics and integrated circuits. It also includes eight general-purpose digital I/O lines for a variety of applications, such as configuring the address of I2C devices or toggling LEDs. The USB‑8451 can be physically located more closely to I2C/SPI devices than PCI interfaces, reducing I2C bus length and minimizing noise problems. Additionally, the interface provides +5 V and GND to power circuits with no external power supply.
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Product
Three-axis Fluxgate Magnetometer
TFM1186
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The Three-axis Fluxgate Magnetometer TFM1186 is a member of Metrolab's THM1176 family of 3-axis handheld magnetometers. It is a lightweight, low-power, go-anywhere fluxgate magnetometer. Outstanding noise characteristics make fluxgate magnetometers the instrument of choice for measuring minute disturbances in the local magnetic field, for example due to an iron mass or AC power-line noise. The TFM1186 has a range of ±100 µT and a resolution of 4 nT. The TFM1186 simultaneously measures all three axes of the magnetic field, so you get a true field strength reading no matter how you hold the probe. The entire instrument has been reduced to a cable with a few fat spots, which can plug directly into your PC or into a battery-powered handheld computer. 3-axis Teslameter Gaussmeter
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Product
Multifrequency Clock Synthesizer - PMC
Model 7190
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- Simultaneous synthesis of up to 5 different clocks- 8 SMC clock outputs- Ideal for A/D and D/A converter clock sources- Typical phase noise: -125 dBc/Hz @ 1 kHz offset- All clocks are phase-locked to input reference signal- Input reference frequency of 5 or 10 MHz- Four quad VCXOs allow selection from 16 different base frequencies- Output clocks of 1, 2, 4, 8, or 16 submultiples of VCXO base frequencies- Output clock frequencies between 50 and 500 MHz- Control and status via PCI bus interface
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Product
Refrigerant Leak Detector w/ Gooseneck
RLD10
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UEi Test & Measurement Instruments
The RLD10 makes pinpointing leaks as easy as one two! Detect leaking refrigerant using the high sensitivity mode then switch to the low sensitivity mode to pinpoint its source. If background noise makes the audible tic hard to hear, you can count on the color scaled LED indicators. With the RLD10 you'll get the latest in refrigerant detection at a great price.
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Product
sbRIO-9211, Non-Enclosed, 4-Channel, 14 S/s Aggregate, ±80 mV C Series Temperature Input Module
780877-01
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Non-Enclosed, 4-Channel, 14 S/s Aggregate, ±80 mV C Series Temperature Input Module - The sbRIO‑9211 includes anti-aliasing filters, open-thermocouple detection, and cold-junction compensation for high-accuracy thermocouple measurements. The sbRIO‑9211 features NIST‑traceable calibration and a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and high common-mode voltage range. Non-enclosed modules are designed for OEM applications.
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Product
Power Integrity Analyzer Reference Solution
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The power integrity analyzer reference solution is a hardware-based solution with the Keysight Infiniium S-Series 10-Bit ADC oscilloscope and probes, including the N7020A power rail probe that lets you see the true AC power noise on your DC power line and supports up to +/- 24 V offset and the N2820A high-sensitivity current probe that can measure down to 50 uA.
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Product
PXI/PXIe RF Multiplexer, Dual 8-Channel, 3GHz, 75Ω, MCX
42-834A-102
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The 40-834A-102 (PXI) and 42-834A-102 (PXIe) are 75 Ohm 8 to 1 RF multiplexers with 2 banks in a single slot. They have been designed to exhibit low insertion loss and VSWR through the use of modern RF relay technology at an affordable cost. Each MUX has been carefully designed to ensure excellent and repeatable RF characteristics to frequencies of 3GHz with each path having a nominally equal insertion loss. The design of the 40/42-834A 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
sbRIO-9263 , Non-Enclosed, 100 kS/s/ch Simultaneous, ±10 V, 4-Channel C Series Voltage Output Module
780876-01
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Non-Enclosed, 100 kS/s/ch Simultaneous, ±10 V, 4-Channel C Series Voltage Output Module - The sbRIO‑9263 is a simultaneously updating analog output module. It features overvoltage protection, short-circuit protection, low crosstalk, fast slew rate, high relative accuracy, and NIST‑traceable calibration. The sbRIO‑9263 module includes a channel‑to‑earth ground double isolation barrier for safety and noise immunity. Non-enclosed modules are designed for OEM applications.
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Product
Sound Level Meter, 30 dB, 130 dB, 1.5 dB, 0.1 dB, 0 °C, 40 °C
72-942
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Compact Digital Sound Level Meter measures less than 9" in length, including the windscreen, yet provides selectable response time and frequency weighting. It is perfect for sound system testing, speaker system measurement and environmental noise level monitoring.
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Product
VECTOR-GUN HANDHELD DIRECTION FINDING ANTENNA SYSTEM
HFDF
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National RF's Type HFDF active directional antenna system consists of a high gain RF amplifier coupled to a tunable Faraday shielded loop antenna. Several loop antenna assemblies are available to provide coverage of frequencies in the HF and low VHF spectrum. Due to the nature of a Faraday shielded loop, the antenna exhibits a sharp null through the diametric center of the loop. This null is used to determine the direction of incoming radio signals or to locate electrical noise being radiated from some source. The internal high gain amplifier is used to compensate for the inherent inefficiency of the actual loop at the operating frequency. Overall, the system dynamic response is about +6 dB as compared to the dynamic response of a dipole. To aid in the direction finding process on strong signals, an internal 30 DB attenuator is provided. As the loop antenna presents a bi-directional response, tri-angulation may be required to eliminate the ambiguous signal direction. The line of site of the incoming signal is determined by listening for a signal null on the receiver or by watching the receiver’s S-meter.
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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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Product
Powered VXI Crates
VXI-C Size 6021
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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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Product
Power Sensor and SNS Noise Source Cable (6.1m/20 feet)
11730C
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The Keysight 11730 series power sensor cables are used with the 8480 and E-series power sensors (except the E9320 family of peak and average sensors). These cables are designed to reduce RFI effects on low power readings with an improved shielding design in the cable itself. Cables may be ordered individually or in pairs in any combination desired for single and dual-channel measurements.
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Product
Potentiostat / Galvanostat / Impedance Analyzer
PalmSens4
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PalmSens4, is a USB and battery powered Potentiostat, Galvanostat, and optional a Frequency Response Analyser (FRA) for Electrochemical Impedance Spectroscopy (EIS). The PalmSens4 has a large potential range (-5V to 5V or -10V to 10V) and current range (100 pA to 10 mA) with a high resolution and low noise. This instrument is a complete laboratory instrument but its compact and rugged design makes it also ideal for field work.
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Product
Sound Level Meters
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Digital Sound Level Meter is a multi-function instrument. It measures both the A and C weightings. It is excellent for checking noise levels to remain in standards of compliance and has many other applications.
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Product
Signal Generator
8007
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Normal switching mode, SSB phase noise will be degraded in the fast mode. 5 digit BCD, 1 latch control line, 25 pin female, D type connector
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Product
IsoPods: Streaming Meters For Recording Temperature, PH, Conductivity And Dissolved Oxygen
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eDAQ isoPods™ are portable streaming data recorders. These electrically-isolated meters can be used for recording data in situations where signal noise and crosstalk would otherwise be an issue.
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Product
Programmable Multifrequency Clock Synthesizer - 6U VPX
Model 5791
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- Simultaneous synthesis of up to five different clocks- Eight SMC clock outputs- Typical phase noise: -105 dBc/Hz @ 1 kHz offset- All clocks are phase-locked to input reference signal- Input reference frequency of 5 to 100 MHz- Four programmable VCXOs with 32-bit tuning resolution- Output clocks of 1, 2, 4, 8, or 16 submultiples of VCXO base frequencies- Output clock frequencies between 50 and 700 MHz- Control and status over the VPX backplane
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Product
Probes, Clamp-On
EM-6987 | 1 KHz – 110 MHz
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The EM-6987 is capable of measuring signals and noise superimposed on power currents up to 300 A from DC to 400 Hz. Intermodulation effects on current probe output are also negligible.
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Product
50W Power Supply, 35V, 1.4A or 60V, 0.8A
E3643A
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Keysight basic DC power supplies offer essential features for a tight budget. The single & dual output, 30-100 W GPIB E3640 series provide small, compact size for bench and system use; low output ripple and noise; and built-in measurements and basic programmable features. The Keysight 48W, single output E3643A is a stable and reliable power supply for benchtop and basic automated test applications, and enables versatile solutions for tests that require moderate speed and precision with both GPIB and RS232.
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Product
Multi Output Regulated DC Power Supply
LQ6324T
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- Low cost general purpose laboratory bench unit.- Fully protected against overload and short circuit.- Three independent outputs electrically isolated from each other.- 5V/5A with over voltage crowbar protection for digital ICs.- Electrically floating outputs up to 500V DC w.r.t. ground.- Compact modular construction.- Precise regulation, low ripple and noise for both constant voltage and constant current operation.- Quality components and conservating ratings for high reliability and long life.
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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
Phase Noise Analyzer
DCNTS
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Noise eXtended Technologies S.A.S.
The DCNTS is a two channel Phase and Amplitude noise analyzer. Its dual demodulator architecture allows the system to use cross-correlation to cancel its internal noise and limitation; it is like comparing the outputs of 2 systems and only display the similarities while rejecting differences.
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Product
PXIe High-Speed Digitizer/ Wideband Digital Receiver, 12-bit, 3.2 GS/s, FPGA Signal Processing
M9203A
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The Keysight M9203A is a low noise, 12-bit PXIe high-speed digitizer/ wideband digital receiver with programmable on-board processing. With a wide analog bandwidth, this high-speed digitizer is ideal for applications requiring wideband signal capture and very high dynamic range. The M9203A is a dual-slot 3U PXIe 12-bit wideband digital receiver running at 3.2 GS/s, up to 2 GHz instantaneous analog bandwidth and providing a large 4 GB DDR3 acquisition memory. The M9203A features a large XilinxFPGA that can implement different functionalities depending on the selected firmware option. Dedicated functions can also be implemented on board, allowing support of various applications. Furthermore, Keysight is supporting the deployment of custom processing algorithm on this digitizer with the U5340A FPGA development kit. Integrating algorithms minimizes the need for additional circuitry and exploit the full density and speed of the digitizer.
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Product
FTTx PON Optical Amplifier (1540~1563nm)
HA5800B (2RU)
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Hangzhou Huatai Optic Tech. Co., Ltd.
HA5800B (2RU) series is a low noise, high performance, FTTP high power, multi-ports optical amplifier with gain spectrum band within 1540~1563nm. Each output port for optical amplifier has built-in well-performed CWDM. Every external up-link optical port of optical amplifier can connect with OLT PON port very conveniently. Each 1550nm (CATV)'s output optical port multiplex 1310/1490n's data stream, in order to reduce the quantity of the component and improve the index and reliability of the system.
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Product
Low-Noise DC Bias
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Imaging devices, such as CCDs, IR FPAs, and CMOS image sensors, require DC bias with very low electrical noise to prevent contamination of the image. Image quality can also be enhanced by carefully tuning each bias voltage to extract the maximum signal/noise ratio out of an array. Pulse Instruments has decades of experience providing DC bias supplies with the flexibility required tocharacterize and test a variety of devices while maintaining the noise immunity required for satellite and astronomy applications.
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Product
Differential Scanning Calorimeter
DSC-L600
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The Differential Scanning Calorimeter (DSC-L600) is a powerful thermal analysis instrument that measures the heat flow of a sample as a function of time or temperature. The DSC-L600 has been designed to be a cost-effective instrument that is well suited for research or QC applications. The instrument communicates with the PC via a RS232/USB connection. The specially designed heat flux plate has demonstrated more than twice the sensitivity than other heat flow type DSC’s on the market. The reproducibility is excellent, and the noise level is virtually unnoticeable due to a precision high gain, low noise differential amplifier
