Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Low Phase Noise Amplifiers
Low Phase Noise amplifiers are critical for many applications requiring high signal integrity. This is especially relevant in instrumentation, defense, and telecommunication applications where low phase noise amplifiers are becoming increasingly important as the oscillators improve. Phase noise is described as the close-in noise to the carrier that can often appear as jitter on a clock signal. Analog Devices offers a large portfolio of low phase noise amplifiers to meet a variety of requirements in the LO network, receiver, as well as in the transmitter. Our portfolio supports a wide range of power levels and frequencies to provide the right solution for the given application.
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Noise Dosimeters & Sound Level Meters
There are multiple methods at your disposable to mitigate the hearing loss risk, including engineering controls, administrative controls, and implementing a hearing protection program. But in order for the program to be effective and efficient, consistent monitoring of personal and ambient noise exposures is necessary to log data and determine appropriate corrective action.
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Noise Source Test Set, 10 MHz to 26.5 GHz
N2002A
The N2002A noise source test set is a low cost, stand-alone instrument that, as part of a calibration system, enables fast, repeatable calibrations with minimal levels of uncertainty.
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Minimal Signal Noise
SCSI Quiet Cables
Paralan Corporation was one of the first companies to recognize that 90% of the problems with SCSI Bus installations lie with the cables. To address this problem, Paralan developed its own line of high-quality shielded Quiet Cables.
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TriaxM-TriaxM, Low Noise Triaxial to Triaxial Cable for SMUs, 1 m
785659-01
The TriaxM-TriaxM Triaxial Cable connects your system to PXI Source Measure Units and other devices that have a triaxial connector. It uses guarding to remove the effects of leakage current and parasitic capacitance when … measuring very low current signals. The cable offers 300 V DC maximum voltage, 3 A maximum continuous current, 10 A maximum pulsed current, and different lengths.
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Noise Analysis Software
noiseLAB
noiseLAB is a professional software recording and analysis package for making Type 1 Precision measurements to international standards. Precision Recorder: noiseLAB makes high quality recordings of up to 8 channels of sound. Precision Analysis of: Sound Level (Fast, Slow, Impulse, Taktmak. Custom Time Constant, Leq). Statistical Values (L1, L5, L10, L50, L90, L95, L99). Octave Spectra (1/1, 1/3, 1/6, 1/12, and 1/24th octave).....
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Noise Figure Measurements With Vector Correction
S96029B
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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Industry Standard in Noise Measurement
PN9000
The PN9000 is a simple and fast Automatic Phase Noise Test System covering a very wide frequency range(2 MHz to 140 GHz). Its modular architecture allows optimum configuration, multiple measurement techniques and future growth in a compact instrument.
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Components - Low Noise Amplifiers (FLNA)
FLNA series
Farran's FLNA series low noise amplifiers are constructed with discrete or MMIC pHEMT devices that operate over the frequency range 18 to 110 GHz. These amplifiers are specifically designed for low noise applications.The amplifiers are offered in two categories: standard and custom-built. The custom-built amplifiers are offered in various RF interfaces, including standard waveguide or coaxial connectors, for convenient system integration.
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"Extremely Random" Precision Noise Generator
Model 3025
The Model 3025, "Extremely Random"TM Precision Noise Generator supplies White and Pink Noise, and a 1 kHz reference signal. Crystal controlled - the pseudo random circuitry provides a 6.5 Day pseudo-random cycle time, assuring a "Extremely Random"TM noise source.
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Low Noise Amplifier
Low noise amplifier with a typical small signal gain of 22 dB and a nominal noise figure of 5dB across the frequencyrange of 90 to 110 GHz.
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TriaxM-TriaxM, Low Noise Triaxial to Triaxial Cable for SMUs, 3 m
785659-03
The TriaxM-TriaxM Triaxial Cable connects your system to PXI Source Measure Units and other devices that have a triaxial connector. It uses guarding to remove the effects of leakage current and parasitic capacitance when … measuring very low current signals. The cable offers 300 V DC maximum voltage, 3 A maximum continuous current, 10 A maximum pulsed current, and different lengths.
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Community Noise Prediction Software, Version 2
SPM9613
A low-cost computer program for analyzing community noise and sound propagation emitted from a variety of noise sources. The engineering software is based on the ISO 9613 parts 1 and 2 standards. SPM9613 provides calculations at specific field points (listeners) and predictions of A- and C-weighted sound level contours as well.
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SNS Series Noise Source 10 MHz to 18 GHz (ENR 15 dB)
N4001A
The SNS series N4001A noise source is ideal for general purpose use with a low reflection coefficent and a nominal ENR of 15 dB from 10 MHz to 18 GHz.
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Noise Reduction
Applied Research and Technolgy
Eliminate ground hum with our specialized transformers and isolators.
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Handset Noise Under RF Test System
BK8021
If you need to evaluate the resistance of cellphones to RF interferance, the BaKo Type BK8021 Handset Noise Under RF Test System is what you need. It performs four tests to evaluate the Sending Noise, Sending Sensitivity, Sending Loudness, Sidetone Masking, Receiving Sensitivity and Receiving Loudness. You run the system using the controlling PC, which allows automatic configuration and which runs the test sequence automatically. When testing is complete, you can print the data as an MS Excel report or save it for comparison and analysis.
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Noise Figure Meters
H5M Series
*Frequency range from 10 MHz to 4/20 GHz*Noise Ratio and Gain measurements*Frequency converter measurements with a fixed or external heterodines*Built-in thermostatic YIG preselector*High measurement speed*Extend the NFA solution up to 50 GHz with special downconverter unit*SCPI Language Compatibility
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Noise Board
332D-11 VG
This printed circuit board was designed to original specifications and contains OEM specified parts. This board is required for testing the 332D-11 series gyros. Also contained on board is the Method A type calibration and sample and hold circuits required to perform the calibration of the noise circuits.
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High Voltage Linear Power Supplies Bipolar 4-quadrant, Analog/Digital/Local Control, Ultra Low Ripple/Noise
Series BOP-HV
The Kepco Model BOP 500DM and BOP 1000DM are high voltage power sources, up to 500V or 1000V, respectively. These combine the capabilities of fast programmable power supplies with a Class A output stage, which can respond bidirectionally from zero. The BOP-HV can be operated in either a "voltage stabilizing" or "current stabilizing" operating mode (selectable by a front panel switch). These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.
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Low Noise Test Cables For N1413 With B2980 Series, 1.5 M
N1427A
The N1427A is designed to operate specifically with the B2985B/87B Electrometer/High Resistance Meter. It comes with a separate triaxial (special screw-type) female connector and a High Voltage BNC (special type) female connector. This allows terminal configuration to be converted to any other configuration. Therefore, custom test fixture can easily be constructed. The N1413A High Resistance Meter Fixture Adapter is also required to connect the N1427A to the B2985B/87B.
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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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Broadband Calibrated Noise Sources
Fairview Microwave’s calibrated noise sources cover frequency bands from 10 KHz to 18 GHz. Their performance specifications include output ENR levels ranging from 15 dB to 30 dB and typical VSWR levels as low as 1.25:1. Depending on the model, calibrated frequency points are at 10 MHz, 100 MHz, 1000 MHz, 2000 MHz and 1 GHz steps. The temperature coefficient of these noise sources is < 0.01 dB/°C and noise output variation is < 0.1 dB/%V.
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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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Noise Sources
NC1126A
This noise source by Noisecom produces white Gaussian noise up to +13 dBm. It contains a hermetically packaged noise diode that has been pre-selected for special performance characteristics. This module is ideal for many different applications including CATV, Secure communications, Jamming systems, OC-192 Testing, EW & EC.
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SCB-68A, Noise Rejecting, Shielded I/O Connector Block
782536-01
68-Pin Female Screw Terminal to 68-Pin Female D-SUB, DIN-Rail, Shielded I/O Connector Terminal Block - The SCB-68A provides a shielded I/O connection for interfacing I/O signals to plug-in data acquisition devices with 68-pin connectors. This Terminal Block combines with shield cables to provide low-noise signal termination. The SCB-68A incorporates a completely redesigned mechanical enclosure with a magnetic removable lid, DIN-rail mount compatibility, and a resettable fuse. It is compatible with single- and dual-connector Multifunction I/O with 68-pin connectors. The SCB-68A also includes two general-purpose breadboard areas and an onboard cold-junction compensation sensor.
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Fast Low Noise SWIR InGaAs Camera
C-RED 2
C-RED 2 is a revolutionary ultra high speed low noise camera designed for high resolution Short Wave InfraRed imaging. Thanks to its state of the art electronics, software, and innovative mechanics, C-RED 2 is capable of unprecedented performances: up to 400 images per second with a read out noise from 10 to 30 electrons. Designed for high-end SWIR applications, smart and compact, C-RED 2 is operating from 0.9 to 1.7 μm with a very good Quantum Effi ciency over 70%, offering new opportunities for industrial or scientifi c applications.
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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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End of Line Noise Test System
End of Line Noise Test Systems from VIacoustics are designed to support end of line product noise testing on factory floors and quality assurance environments. Using the Limit Analysis features of the Nelson Acoustic Trident software, users can set noise emission maximum, minimum or control range criteria based on Awtd and/or 1/N octave band criteria. Criteria can be customized for most any type of product based on the noise emissions of known good and bad units. The large front panel Pass/Fail indicator allows operators to quickly determine if units meet the criteria. Data on units that fail can be exported for further analysis.
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High-Current, Ultra-Low Noise Filter, 21 V / 500 MA, 10 Ω
N1298A
The N1298A Series is a collection of low noise filters for the Keysight B2960 Series 6.5-digit low noise source.
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Noise Dosimeters
Noise Dosimeters are wearable, portable, wireless (cable-free), personal noise exposure meters for occupational and workplace noise measurements. They are designed specifically to monitor an employee’s noise exposure in order to comply with Health and Safety regulations.
