Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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Product
MEGA-POLE® Series
MEGA-POLE™
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The MEGA-POLE filter series covers the standard frequency bands within the 30 to 450 MHz range. This new filter series provides excellent selectivity while maintaining very low insertion loss. The product line also has exceptional RF power handling capability with a high third order intercept point. The MEGA-POLE filter series can be used for transmitter applications to reduce power amplifier noise, harmonics and intermodulation products, to provide bi-directional filtering directly at a transceiver’s antenna port, or other applications requiring extremely linear, high power RF bandpass filtering. It has been designed for rugged military environments per MIL-STD-810.
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Product
Bluetooth Enabled Signal Conditioners I/O Modules
microBlox
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Acromag's microBlox uB Series I/O modules offer a compact, high-performance solution for interfacing sensors and field devices with data acquisition systems. uB signal conditioning modules are ideal to isolate, filter, convert and amplify a wide variety of signal types for test, measurement and control systems. Just plug uB modules into 4, 8, or 16-channel backpanels in any mix for a high-density analog I/O interface. Channel-to-channel isolation provides optimal noise and surge protection from ground loops, spikes, and high common mode voltages.
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Product
Particle Impact Noise Detection (PIND) Test
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This test detects the presence of free moving particulate contaminants within sealed cavity devices. This test is specifically directed toward relays and other devices where internal mechanism noise makes rejection exclusively by threshold level impractical. This test method also may be used prior to final sealing in the manufacturing sequence as a means of eliminating loose particles from the interior of the device.
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Product
Power Supplies
MP-550B
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With dual PCI-E connectors, the MP Series carries all its essentials to power your system. Enjoy the graphic rendered programs and games without the threat of overheating. Its dark aluminum chassis not only looks good, but dramatically relieves heat built-up. The 120mm fan enhances the already efficient heat dissipation rate and helps balance the cooling system with noise level. The MP Series is great for high end users to everyday casual users. Whatever your system needs, the MP Series can deliver.
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Product
Small Device Noise Emission Test System
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The Small Device Noise Emission Test System from VIacoustics is a turnkey solution for the measurement of noise emissions of small devices typically used in computers, consumer electronics, appliances and automobiles. The system includes all hardware and software necessary (see the components tab) for the determinations of sound power levels (1/3 octave band and A-weighted), emission sound pressure levels (normalized 1/3 OB, A-weighted and high resolution FFT) and *ISO 532B loudness. The system is designed to be operated by a technician for production level testing or to be used by an engineer in the product development process.
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Product
High ENR Coaxial
NC3400
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The NC3400 Series coaxial noise sources are an excellent choice for applications requiring high ENR and immunity to large incident RF power, such as ATE, radiometer, and radar systems
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Product
Dual-Channel Power Supply
DPS16
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The DPS16 is a dual-channel power supply with very low output noise and no ripple. The output current can be up to 200 mA and has a programmable current limit. The 4 wire capability provides an excellent load regulation. Because the DPS16 is a fully linear design the output noise is exceptionally low while there are no ripple components as usually seen with switched mode designs. The unit has voltage and current read back on both channels with 16-bit resolution.
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Product
Noise Source, 10 MHz to 18 GHz, nominal ENR 15 dB
346B
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The Keysight 346B 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 346B's high ENR, low SWR, and variety of connectors make it a general-purpose noise source. Add special option H01 for high ENR (21 dB typical) to measure high noise figure devices, or option H42 for measuring Direct Broadcast Satellite (DBS) low noise block converters.
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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
Programmable Multifrequency Clock Synthesizer - PMC
Model 7191
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- Simultaneous synthesis of up to up to 5 different clocks- Eight SMC clock outputs- Ideal for A/D and D/A converter clock sources- Typical phase noise: -105 dBc/Hz @ 1 kHz offset- All clocks are phase-locked to input reference signal- Input reference frequency of 5 or 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 via PCI bus interface
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Product
Speed Sensors
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DHE (Differential Hall Effect) sensors give an output when subjected to a changing magnetic field. The field is set up by a magnet inside the sensor body and changes when ferromagnetic teeth are passed beneath the sensor (no magnets are required in the target). To improve noise resistance, the sensor has two Hall effect elements and only responds to changes in magnetic field strength corresponding to tooth passing frequencies above 15Hz. As each tooth passes the sensor, the digital state of the output changes.
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Product
60 V Common Mode Differential Probes
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The 60 V Common Mode Differential Probes are the ideal probes for lower voltage GaN power conversion measurement with the highest accuracy, best CMRR, and lowest noise.
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Product
Audio Analyzer
1121A
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The Model 1121A 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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Product
Power Supply QD305 2x30V/5A
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*on / off switch output section*two independent adjustable DC output*independent outputs serial and parallel*constant voltage and current*Low ripple and noise*four digit LED displays three*for 16 hours at full load*automatically search out
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Product
Phase Noise Analyzer and VCO Tester
FSPN
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The R&S®FSPN phase noise analyzer and VCO tester is designed to provide both very high sensitivity and measurement speed for production and design engineers working in these fields characterizing sources such as synthesizers, VCOs, OCXOs, and DROs. It is the ideal instrument for demanding development and production phase noise and VCO analysis.
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Product
YIG Oscillators
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With a 30 year heritage in YIG technology, Teledyne RF & Microwave has unsurpassed capabilities as your single source for YIG Oscillators and offers 'best in industry' low phase noise. Teledyne has a large, self-contained YIG manufacturing and R&D infrastructure that ensures continuous YIG innovations, including the industry's only YIG filter that "locks" to a desired signal.
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Product
100W Dual Output Power Supply Two 8V, 5A or 20V, 2.5A
E3648A
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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 with GPIB and RS232 interface. The Keysight 90W, multiple output E3648A is a clean, reliable power supply for general purpose applications, and combine convenient benchtop capabilities with flexible system features in a compact, multi-output package.
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Product
Acoustic Calibrators
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When you're ready to take noise measurements, it's strongly recommended that you perform a field calibration using an Acoustic Calibrator. You should calibrate your sound meter before you start to measure, and then once you've finished you should perform a reference check against the calibrator and make note of any drift that has occured. You can find out more about performing Field Calibrators by reading this post and watching a short video.
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Product
Full Band Noise Figure and Gain Test Extenders
STG-06-S1
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Full band noise figure and gain test extenders are offered to extend noise and gain measuring capabilities up to higher millimeterwave frequency ranges. These extenders are designed to interface with noise and gain test systems that have an input IF of 10 MHz to 1.6 GHz, such as the industry standard Keysight 8970A/B, N8975A and Maury MT 2075B. The noise figure and gain test extenders include a high-performance, solid-state noise source (STZ series) and a full waveguide down converter (STC series), which consists of a Faraday isolator (STF series), full band mixer (SFB series), frequency multiplier, and IF amplifier. A frequency source with an output signal in the frequency range of 10 to 20 GHz is required as a local oscillator for the down converter. The noise source is automatically powered on and off by the noise figure meter.
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Product
Swirl Flowmeters
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Swirl flow meters combine the measuring dynamics of turbine meters with the robustness and reliability of Vortex flow metering by requiring shortest upstream / downstream distances. Equipped with digital signal processing (DSP) and advanced filtering techniques, these innovative flow meters from ABB allow improved flow signal detection and provide measurement immunity from the effects of hydraulic noise and pipeline vibration.
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Product
Remote Sensor
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McLennan Sound Monitoring, Inc
The remote noise sensor assembly consists of a noise sensor mounted in a laser-cut, powder painted, 16-gauge metal chassis. The noise sensor assembly is connected to the main instrument with a four conductor cables and has an “on” indicator LED. Due to the power-balanced low impedance return signal, the remote noise sensor can be placed up to 1000 feet away from the McLennan sound level monitor main instrument without significant change in the signal.
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Product
Quantum Accelerometer
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A quantum accelerometer uses atom interferometry to measure accelerations along a horizontal axis. Quantum accelerometers are able to achieve a combination of sensitivity and stability by exploiting quantum interference. As such, they will be critical components of a quantum inertial navigation unit, which will offer satellite-free navigation with unparalleled long-term accuracy. A phase locked SolsTiS system underpins this setup and provides the extremely low phase noise required to make high sensitivity measurements and dynamic frequency tunability to address multiple atomic transitions.
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Product
Current Source-Sink D/A Converters
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Analog Devices’ current source D/A converters (DACs) portfolio is ideal for photonics control applications where low current noise density, low dropout voltage, and high power efficiency, in addition to high channel density, is critical to system performance. The flexibility of the configurable current source D/A converter outputs, and 300 mA current delivery, make them suitable for resistive heaters and proportional solenoid drive.
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Product
Embedded Synchro - Resolver -
LVDT I/O Cards
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Computer Conversions Corporation
100% Transformer Isolation is offered for all AC I/O, and various Isolated DC converters are available as standard product, eliminating concerns for ground-loops, ground interjected (intermittent and ghostly) field noise, inductive surges, differing potentials, and high voltage field transients from effecting the card itself, the sensitive ISA bus backplane and any other device or system sharing these signals.
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Product
Handheld Signal Level Meter
CT-DLM870D
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The CT-DLM870D is a hand held signal level meter capable of reading analog, digital QAM and digital off air signal levels as well as Carrier to Noise, Bit Error Rate (BER), Modulation Error Rate (MER) and tilt.
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Product
PXI-6238, 8 AI (16-Bit, 250 kS/s), 2 AO, 6 DI, 4 Sourcing DO, Bank-Isolated, PXI Hybrid, Multifunction I/O
779624-01
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8 AI (16-Bit, 250 kS/s), 2 AO, 6 DI, 4 Sourcing DO, Bank-Isolated, PXI Multifunction I/O Module—The PXI‑6238 is a bank-isolated DAQ device designed for current I/O. It offers analog I/O, digital input, sourcing digital output, two 32‑bit counters, and digital triggering. The digital input and outputs are compatible with 24 V signals. It combines the safety and performance benefits of isolation with high-performance timing, amplification, and calibration technologies to offer accurate measurements and precise control. The PXI‑6238 is ideal for test, measurement, control, and design applications in environments with high voltages and electrical noise. You can use the PXI‑6238 to read from encoders, flow meters, and proximity sensors as well as control valves, pumps, and relays.
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Product
Ultrasonic Leak Detector
VPX-WR
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The Superior AccuTrak Model VPX-WR represents THE state-of-the-art technology for ultrasonic air leak detection! This ultra-durable and waterproof instrument incorporates our patented and trademarked circuitry we call "DND" (Dynamic Noise Discrimination). Older detectors using only the heterodyne technique, simply cannot offer the same leak detection abilities, especially in loud plant environments.
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Product
PXI-6236, 4 AI (16-Bit, 250 kS/s), 4 AO, 6 DI, 4 DO, Bank-Isolated, PXI Multifunction I/O Module
779622-01
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4 AI (16-Bit, 250 kS/s), 4 AO, 6 DI, 4 DO, Bank-Isolated, PXI Multifunction I/O Module—The PXI‑6236 is a bank-isolated DAQ device designed for current I/O. It offers analog I/O, digital input, digital output, two 32‑bit counters, and digital triggering. The digital input and outputs are compatible with 5 V TTL/CMOS signals. It combines the safety and performance benefits of isolation with high-performance timing, amplification, and calibration technologies to offer accurate measurements and precise control. The PXI‑6236 is ideal for test, measurement, control, and design applications in environments with high voltages and electrical noise. You can use the PXI‑6236 to read from encoders, flow meters, and proximity sensors as well as control valves, pumps, and relays.
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Product
ICE 3000 Series
ICE3005
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The ICE3005 is an agile filter/amplifier cascade for the UHF frequency band with a VHF bypass. It enables simultaneous operation of multiple transceivers in a cosite environment and is factory configured for an ARC-210 interface. This filter/amplifier provides multiple poles of RF selectivity to reduce broadband noise, harmonics, and spurious signals while still providing full output power in transmit mode and excellent selectivity to interfering signals at the transceiver’s RF input in receive mode. All transmit, receive, and bypass switching is incorporated into the two-port design. The ICE3005 also includes a separate audio processor circuit that mitigates popping and drop-outs in the R/T audio that are common in hopping or blanked waveforms. The ICE3005 incorporates extensive Built-in-Test capability and is qualified for military applications. A mounting tray is available for easy incorporation on your platform. Cost-effective modifications are available on the ICE3005. Please contact your sales representative at 513.870.9060 or Support@PoleZero.com for details.
