Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Product
Noise Figure Measurements With Vector Correction
S96029B
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This software application enables high-accuracy noise figure and noise-power measurements of amplifiers. It utilizes Keysight’s unique vector-source-correction technique, which uses a source-impedance tuner to remove the effects of imperfect system-source match. This approach yields accuracy that surpasses that provided by the Y-factor method and other cold-source implementations, especially for in-fixture, on-wafer, and automated-test environments. A scalar-calibrated method is also available that offers less accuracy but is faster and does not require an impedance tuner.
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Product
Event Detectors
STD Series
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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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Product
Noise Figure Analyzers & Noise Sources
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Keysight Technologies provide a range of noise figure measurements solutions to meet your needs, from the NFA series noise figure analyzers to the noise figure measurement personalities for our spectrum analyzers. We also have a range of noise sources to complete the measurement solution.
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Product
Low Level Voltage Measuring Instruments
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This instrument has a very wide range of source resistance capability and has an equivalent noise resistance of less than 10 ohms. Sub-nanovolt resolution is possible. The N11 has many applications, including cryogenic measurements.
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Product
Noise Assessment System For Noise At Work
NK013
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This Noise Assessment System for Noise at Work provides you with everything you need to perform assessments to The Control of Noise at Work Regulations 2005, at an incredible price.
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Product
Phase Detectors
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Holzworth Instrumentation, Inc.
These components are targeted for use in phase noise measurement systems and ultra low phase noise phase lock loop designs.
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Product
Compact Photon Counting X-Ray Detector
HyPix-3000
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Rigaku’s HyPix-3000 is a next-generation two-dimensional semiconductor detector designed specifically to meet the needs of the home lab diffractionist. One of the HyPix-3000’s unique features is its large active area of approximately 3000 mm² with a small pixel size of 100 μm², resulting in a detector with high spatial resolution. In addition, the HyPix-3000 is a single photon counting X-ray detector with a high count rate of greater than 10⁶ cps/pixel, a fast readout speed and essentially no noise.
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Product
Evaporative Light Scattering Detector
ELSD-LTII
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The ELSD-LTII utilizes a high-efficiency LED and enhanced digital signal treatment to minimize noise and deliver optimum sensitivity for trace analysis. An innovative cell design also reduces band broadening and allows sensitivity levels below 200 picograms. The high-performance optical detection system can also be used for combinatorial chemistry and high-throughput screening applications. The new Low Temperature Evaporative Light Scattering Detector (ELSD-LTII) is an easy-to-operate, universal detector that identifies analytes with uniform sensitivity regardless of their spectroscopic properties. It is not a spectroscopic detector. Instead, it removes the mobile phase through evaporation and then makes a light scattering measurement of the dried analyte particles.
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Product
Vibrating Sample Magnetometer
VSM
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The Cryogenic Vibrating Sample Magnetometer (VSM) is designed for measurement of the DC magnetic moment of a sample with a noise floor sensitivity of 10-6 and at 10 seconds integration time.
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Product
PH / ORP Monitor / Controllers
720 Series II
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The advanced “isolated” circuitry of the 720 Series II pH/ORP Monitor/ controllers guarantees accurate and reliable measurements — completely eliminating ground-loop and noise issues. The unique sensor preamp allows for longer distances between the sensor and the Monitor/controller without the loss of accuracy or reliability.
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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
Bench Power Supply, Linear, Programmable, 1 Output, 0 V, 60 V, 0 A, 2 A
72-2715
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The 72-2715 from Tenma is a single channel programmable bench power supply. It is a digitally controlled industrial grade power supply with load for a long time. This compact design power supply has intelligent temperature controlled fan, low noise and low ripple. It also features knob lock function to avoid improper operation. This power supply has load regulation ≤0.01% +2mV (voltage), ≤0.1% +5mA (current) and line regulation of ≤0.01% +3mV (voltage), ≤0.1% +3mA (current). The setting accuracy (25°C ±5°C) is ≤0.5% +30mV (voltage), ≤0.5% +5mA
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Product
NI-9266, 8-Channel C Series Current Output Module
785047-02
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8-Channel C Series Current Output Module - The NI‑9266 is ideal for interfacing and controlling industrial current-driven actuators. The module has built-in open-loop detection, which generates an interrupt in software when an open loop is detected as well as zeroing outputs to ensure safety and avoid driving actuators at system power on. The NI‑9266 includes channel‑to‑earth ground isolation for safety and noise immunity.
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Product
Hyperspectral Imaging Spectrometer
Hyperspectral PoliSpectra® H116
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HORIBA has developed a unique hyperspectral imaging spectrometer with an integrated scientific CMOS camera (12-16 bit) featuring HDR (95dB Dynamic Range and 1.7e- noise) and 95% Q.E peak efficiency:PoliSpectra® H116 features broad UV-NIR coverage in one acquisition (185-1050 nm) combined with the highest spectral resolution (<1 nm).
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Product
Sound Level Meters
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Cirrus Research offers a comprehensive range of Class 1 and Class 2 handheld sound level meters, ideal for all noise measurement applications from basic noise assessments to detailed acoustic analysis. IOur range of noise level meters spans simple instruments that provide the measurement of sound pressure level, integrating-averaging instruments that provide Leq and occupational noise functions, as well as precision data logging noise meters with 1:1 & 1:3 real time octave band filters and in-measurement audio recording. Trusted by professionals, our sound level meters deliver accurate, reliable results for workplace noise monitoring, environmental noise surveys, and industrial noise assessments.
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Product
C-Band DWDM Line Amplifier EDFA (WLA-C)
HWA4200 (With SNMP)
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Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai HWA4200 series, is designed for C-Band 44 waves or 88 waves DWDM system design Line Amplifier gain flatness. Products using the most excellent optical performance, the most advanced electronic control technology and comprehensive software features, has a wide operating wavelength range, Low noise, excellent gain flatness characteristics and transient characteristics.
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Product
Ethernet/LXI digitizerNETBOX 14 Bit High Speed Digitizer - 500 MS/s on 12 Channels, 12 Single-Ended Inputs
DN6.445-12
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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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Product
Audio Test Tone Generator
ToneGenerator
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Tone Generator is a sine wave generator, frequency generator and signal generator that lets you create audio test tones, sweeps or noise waveforms using your computer or a PDA handheld. Generate sine wave, square wave, triangular waveform, saw tooth waveform, impulse, white noise and pink noise.
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Product
Gasoline Engine Tachometer
SE-1620
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The SE-1620 is an engine tachometer that performs measurement of the number of revolutions of a gasoline engine by connecting an engine revolution sensor such as an ignition pulse detector. A 100-mm wide-angle meter is used for the display, and both analog output and pulse output functions are provided as standard.Simply attach an ignition pulse detector or one of our other compatible detectors to the engine to enable measurement of the number of revolutions of a gasoline engine. The inputs, outputs and input power supply are all isolated to ensure the output of analog and pulse signals with superior noise resistance and stability characteristics.
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PNA-X Network Analyzers
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Keysight's PNA-X is more than just a vector network analyzer. It is the world’s most integrated and flexible microwave test engine for measuring amplifiers, mixers, frequency converters, and other active devices. The hardware includes two internal signal sources, a signal combiner, S-parameter and noise receivers, pulse modulators and generators, and a flexible set of switches and RF access points. These hardware features provide a powerful core for a broad range of linear and nonlinear measurements, all with a single set of connections to your device under test.
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Product
Shielded Rooms
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HIGHVOLT Prüftechnik Dresden GmbH
Electromagetic field and line-conducted interference needs to be eliminated in order to measure low-intensity partial discharges with a PD background noise level (≤ 1 pC) in accordance with IEC 60270.
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Product
Thick Film Passive Element
GBR-183
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GBR-183 series resistors are made in a thick film technology, on ceramic substrates(Al2O3 -96%). Thick film resistors are characterized by a higher stability, and lower noises than a typical carbon resistors. The whole of resistor is encapsulated with epoxy resin by fluidization process. GBR-183 series elements are used both for general, and professional applications.
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Building Acoustics
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Measurements to evaluate and improve Building Acoustics are typically made to analyze and design noise control from room to room, or from outside to inside. Noise sources such as music systems, televisions, appliances, traffic, aircraft, and manufacturing are all around us. The field of Building Acoustics evaluates and designs the materials and methods to insulate and isolate us all from these sound sources when we are at work, rest, or enjoying leisure time. The resulting data is useful for evaluating compliance with building codes and for proposing countermeasures for areas of concern. These measurements often involve creating and measuring an artificial sound source, and then measuring the resulting noise in receiver locations.
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Product
NI-9237, 50 kS/s/channel, Bridge Analog Input, 4-Channel C Series Strain/Bridge Input Module
780264-01
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50 kS/s/channel, Bridge Analog Input, 4-Channel C Series Strain/Bridge Input Module - The NI‑9237 includes all the signal conditioning required to power and measure up to four bridge-based sensors simultaneously. The module provides strain or load measurements with zero interchannel phase delay. It also has 60 VDC isolation and 1,000 Vrms transient isolation, providing high‑common‑mode noise rejection and increased safety. You can program the NI‑9237 for use with half-bridge and full-bridge sensors with built-in excitation. The four RJ50 jacks provide direct connectivity to most torque or load cells and offer custom cable solutions with minimal tools.
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Product
Power Sensor and SNS Noise Source Cables (3 m/10 feet)
11730B
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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
Ethernet/LXI digitizerNETBOX 14 Bit High Speed Digitizer - 500 MS/s on 4 Channels, 4 Single-Ended Inputs
DN2.445-04
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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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Product
Microphone Preamplifier
HT426E01
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Nominal Microphone Diameter1/2Frequency Response Electrical Noise(at 22 C) (Flat 20 Hz to 20 kHz)Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] EnvironmentalTemperature Range (Operating)-40 to +248 FExcitation Voltage 20 to 32 Constant Current Excitation 2 to 10 mA
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Product
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.
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Product
Power Supply 1950W
PS236 / CS236 1100W
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The high density high sophisticated PS236 power supply series replaces the well used PS336 types. PS236 is only 3U high and features six separately regulated extremely low noise outputs for use in CAMAC crates conforming EUR 4100 as well as CERN EP82-01 / EP84-01 and 46-04 specifications as well as in NIM bins UEN01 HC 12.
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Extreme Low Power Detector Laser Power Meters
11XLP12
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11XLP12 extreme low power detector is best suitable for low power im both the µW and mW regimes with very low thermal drift. Featuring broadband flat spectral response, minimal thermal drift and a noise equivalent power as low as 1 µW the 11XLP12 is ideally suited for measuring any pulsed or CW low power laser.
