Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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RF Test Spectrum Measurements over CPRI
Integris 3000
Most modern cell tower network configurations place the Remote Radio Head (RRH) at the top of the tower and the baseband unit(BBU) at the bottom of the tower. While this configuration is advantageous for both computational efficiency and mitigation of RF loss across the cable, it means the only place along RF can be accessed is at the top of the tower. This forces field technicians to have to climb the tower to measure and debug RF noise problems.
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PXIe-4480, 1.25 MS/s, 3.4 Hz AC/DC-Coupled, 6-Input PXI Sound and Vibration Module
784277-01
1.25 MS/s, 3.4 Hz AC/DC-Coupled, 6-Input PXI Sound and Vibration Module—The PXIe‑4480 is designed for high-bandwidth audio, acoustic, and vibration measurements. It provides six channels of dynamic signal acquisition, and you can use one of four gain settings to configure your input range. The PXIe‑4480 also includes software-configurable AC/DC coupling, charge measurement, voltage excitation, IEPE excitation, and TEDS support, making it ideal for measuring acoustic transducers, pressure sensors, and hydrophones. Common applications include audio test; noise, vibration, and harshness (NVH) analysis; and underwater acoustic measurements. For measuring sudden changes, such as high speed blast and pressure events, the PXIe-4480 can sample up to 20 MS/s per channel in time-domain mode.
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Crank Angle Measurement System
CP-5110B Detector/CA-6000B Amplifier
CP / CA series are systems that detect the rotation angle of the engine crankshaft composed of CP-5110B Fiber Optic Crank Angle Detector, CA-6000B Crank Angle Amplifier and CP-5120 / 5130 Slit disk.CP-5110B Fiber Optic Crank Angle Detector makes it possible to detect the crank angle required for various engine performance tests such as combustion analysis with high accuracy and high response. As it has a light projecting and receiving method with an optical fiber, it provides outstanding vibration and noise resistance without a built-in electric circuit in the detector.CA-6000B Crank Angle Amplifier inputs a signal of crank angle detector and outputs a TTL level angle signal and a 1P / R pulse signal.
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Acoustical Random "Noise" Generator
ARNG-2000
Eliminate and Defeat otherwise undetectable distance surveillance devices such as Microwave, Laser and Boom Microphones
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RFoG 4 Ways or 8 Ways Return Path Optical Receiver
RFoG6000
Hangzhou Huatai Optic Tech. Co., Ltd.
RFoG6000 series Return Path Receivers are an integral part of two-way RF access networks, converting upstream optical signals into RF signals at the head-end or remote hubs. 4 or 8 independent receivers are packaged in a 1RU 19-inch rack-mounted unit, serving 256 RFoG optical network terminals (ONTs). A low-noise receiver design improves noise performance by 4dB or more over typical return receivers. Low noise enables DOCSIS 3.0. -32dBm receives sensitivity, allow upstream PON-bound design, such as: supporting 32 splitting way in 20km, 64 splitting way in 10km.
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Development Test for Electric Motors with Power Electronics
Test bench for electric machines and inverters in hybrid applications*Control of mechanical parameters*Verification of electrical properties*Checking the LL characteristics*Short circuit measurement*Recording the performance process*Noise measurement*Temperature measurement
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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 Activated Warning Sign
SoundSign
The SoundSign Noise Activated Warning Sign is a visible, effective way to warn workers and staff of high noise levels.
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(125×150×20mm) C-Band DWDM Booster EDFA Module
WBA4100-FM05
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai WBA4100-FM04 series used 125 x 150 x 20mm MSA standard , is a digital control circuit of DWDM power amplifier function module. Products using the most excellent optical properties, electronic control technology and complete software function is most advanced, wide wavelength range, low noise, excellent gain flatness characteristics and transient characteristics. Application for C-Band 44 wave or the 88 wave of DWDM system.
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High-Performance USB-Controlled PLL Synthesizers
Rugged, SMA-connectorized designs that support a USB 2.0 interface with a PC supplying DC power and GUI command control. They cover a broad range of frequency bands from 25 MHz to 27 GHz. These USB-Controlled PLL Synthesizers deliver output attenuation that is adjustable up to 50 dB in 1 dB steps and high output power levels ranging from +10 dBm to +19 dBm typical. Phase noise is as low as -108 dBc/Hz at 100 MHz offset and phase locked speed is 1 msec typical.
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High Voltage Amplifier
WMA-100A
The WMA-100A model is our cost-effective, compact, general purpose high voltage amplifier. With its high quality and small form factor, it is the ideal choice for any experiment that requires an all-round, reliable high voltage amplifier. It can also be used as a stand-alone low noise high voltage power supply. Two WMA-100A amplifiers and a WMA-IB-HS phase inverter - buffer can be used to double the output voltage.
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NI-9208, 500 S/s, ±20 mA, 16-Channel C Series Current Input Module
780968-02
500 S/s, ±20 mA, 16-Channel C Series Current Input Module - The NI‑9208 is designed with industrial systems in mind. It includes a high-resolution mode with 50/60 Hz rejection to remove low frequency noise. It has high-channel density to reduce the number of modules needed, which leaves slots open for other measurement types or for reducing the overall per channel cost of the system. The NI‑9208 uses a standard D‑SUB connection for use with cables and connector blocks.
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Signal Generator
8007
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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Mixed Signal Oscilloscope - 6 GHz, 2 Analog and 16 Digital Channels
MSOX6002A
1 GHz - 6 GHz2 analog plus 16 digital channels Easily view and isolate signals on the 12.1-in capacitive multi-touch screen with Zone triggering and 450,000 wfms/s update rate Make more precise measurements with 115 Vrms noise floor at 1 mV/div (1 GHz)Get performance measurements anywhere with the portable 6-in deep size Quickly see analysis details with standard histogram and color grade View signal integrity with jitter and eye diagram analysis options
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Noise Location Package
Type HFDF
National RF’s Type HFDF high frequency location system is a proven noise hunting and location directional antenna system that allows you, in many cases, to walk right up to the source of High Frequency (HF) noise! Used by several power companies around the United States, professional noise hunters, and other communications specialists, the HFDF has located noise sources that emanated from pole power transformers, arcing electric fences, CATV in-line amplifiers, plasma TV screens, and even Marijuana grower’s heating lamps! The system incorporates several plug-in, tunable magnetic loop sensors of a proprietary National RF design, that cover the frequency range between 1.8 MHz and 55 MHz. The unit is packaged in a hand-held, lightweight metallic enclosure, with a pistol grip and a magnetic compass mounted on top. The compass is used to get magnetic bearings to the noise source, which may be plotted on a map to triangulate, and ultimately pin-point, the location of the noise source. In certain cases, our customers tell us that they have been able to walk right up to the interfering noise source and correct the situation on the spot!
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Sound Level Meter
AWA5636-0
Hangzhou Aihua Instruments Co., Ltd.
Complies with IEC 61672 Class 2 use in Industrial Noise Surveys ; machinery, vehicles, ships and etc
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Faraday Cage
Electrostatic noise from the laboratory environment disturbs measurement signals and decreases data quality drastically for small current signals. Our Faraday Cage enables effective shielding for measurement on high impedance or low current samples.
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mAEStro Audio Analog to Digital Converter
The mAEStro AADC-100 accepts balanced stereo analog audio inputs and converts them into a single digital bit stream in compliance with the AES/EBU (AES3) and S/PDIF digital audio standards. It generates 24-bit values and uses 128 times over-sampling for extremely accurate and linear analog to digital conversion, as well as offering a high dynamic range with exceptionally low total harmonic distortion and noise.
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Linear Bench or Rack Mount Power Supplies Programmable, Local Control, Ultra Low Ripple/Noise
Series PTR
SERIES PTR are operationally programmable power modules that can be programmed to any level within their rated range and fully loaded at any output setting. These power supplies offer ultra low noise and ultra low ripple at the output and are MIL-STD-461 compliant.
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PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783156-02
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Particle Impact Noise Detection (PIND) Test
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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Bus Interface
IP-1553
MIL-STD-1553 is a versatile standardized bus interface. MIL-STD-1553 is robust featuring Manchester encoding and enough voltage swing to provide excellent noise immunity and reasonable throughput rates.
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Sound Level Meters & Calibrators
A sound level meter, also known as sound pressure level (SPL), decibel (DB) meter, noise meter or noise dosimeter is mainly used for measuring sounds travelling through air. It is used to test noise or sound levels by evaluating sound pressure. It uses a microphone to capture sound and the sound is then evaluated in the device. It is commonly used to prevent loud noises to create a better work environment.
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Infiniium Oscilloscopes
V‑Series
The highest real-time oscilloscope measurement accuracy. Keysight uses a proprietary indium phosphide (InP) integrated circuit process to design the key technology blocks to deliver high-bandwidth performance, ultra-low noise, low jitter, and high-voltage signal input. The InP process lets you see your true signal and make the most accurate measurements.
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Environmental Noise Monitors
Noise is one of the most complained about aspects of the environment, as not only does it have the potential to affect quality of life, it can also be difficult to monitor and therefore control. This type of noise is generally called environmental noise. There are many man-made sources of environmental noise, such as wind turbines, industrial sites, roads and traffic etc. If you are looking for equipment to measure noise in the workplace, look at sound level meters.
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Low Noise AC Amplifier
MA-164A
LOW NOISE AC AMPLIFIERS. Battery powered, rechargeable. Low distortion. Upper and lower bandpass limit selection switcher. 10dB step gain switch
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Sound Level Meter
831-LOWN
Easily make low noise measurements to 6.5 dB A-weighted using the Model 831-LOWN sound level meter paired with the 378A04 low noise microphone and preamplifier. Due to the innovative design of the 378A04 which uses a prepolarized microphone and ICP (constant current) interface, the combination produces a highly portable system that is battery powered and intuitive to use for measuring low noise levels.
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IMPATT Noise Generator CW & Pulse At W-band, 94 GHz :
The device consists of two modules, a cable that connects them, and a power cable. The first module (I) contains the power supply (AC 115 V), regime switch mechanism and a generator of a series of pulses. The second module (II) is the noise generator. Photo 1: Module I - Power Supply
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200W Power Supply, 8V, 20A or 20V, 10A
E3633A
Keysight basic DC power supplies offer essential features for a tight budget. The single output, 120-200 W, GPIB, E3632A-E3634A provide dual range outputs; small, compact size for bench use; low output ripple and noise; as well as built-in measurements and basic programmable features with GPIB and RS232 interface. The Keysight 200W, GPIB, single output E3633A is a high performance supply optimized for manual and basic automated testing; and, with a combination of benchtop capabilities and system features, it is designed to help improve measurement quality and reduce test time.
