Noise
a signal's fluctuation other than that desired.
See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH
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RF Analyzer
Occupied Bandwidth (OBW)Adjacent Channel Power (ACP)Channel Power (CHP)Complementary Cumulative Density Function (CCDF) Intermodulation (IMD)Spectrum Emission Mask (SEM) IQ (Waveform)Phase Noise
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PCI Express Waveform Digitizer
ATS9626
ATS9626 is a 250 MS/s 16 bit PCI Express waveform digitizer with an on-board, user-programmable FPGA. With fixed dc-coupled input range of +/- 1.25V and signal to noise ratio in excess of 72 dB, ATS9625 is an ideal solution for applications that require high dynamic range with dc coupling.
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Ethernet/LXI digitizerNETBOX 16 Bit High Speed Digitizer - 180 MS/s on 20 Channels, 20 Single-Ended Inputs
DN6.447-20
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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Powered NIM Crate
NIM 6000 Series
The WIENER NIM 6000 series combines the technical advantages of the VME 6000 high efficient , low noise switching power supplies with the high reliability CERN spec. conform WIENER NIM chassis. The modular concept of WIENER NIM 6000 series crates allows fan trays and power supplies to be easily inserted and removed without tools.
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Power Supply QD305 2x30V/5A
*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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RF Amplifier
SA1001H
Hangzhou Softel Optic Co., Ltd.
*SA1001H Indoor Bi-directional Amplifier are special amplifiers designed for the last”1km” of the bi-directional transmission network.. Special CATV RF modules packaged in SOT-115 are used as forward channel; Microwave tube push-pull circuit with low noise are used as backward channel ;It has the characteristics of low power consumption，high reliability and excellent cost performance. And it is suitable for small and medium sized CATV bi-directional transmission network*It is more convenient for debug engineering debug, because of the plug-in diplexer filters with built-in adjustable equalizers, adjustable attenuators, plug-in output splitters and scientific and reasonable ports for online test.*These equipments will work in the field rugged environment for a long time continuously, because of the aluminium alloy casing, good heat dispersing performances, beautiful looks, dependable linear power supply and lightning protection systems.
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Electronically Tunable Filters
ETF
Radar. Communications. EW/SIGINT. Frequency agile channelization. Frequency agile noise rejection filter. Local oscillator tracking filter. Controlled bandwidth and center frequency noise source.
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Sound Level Meters
HD 8701
The sound level meter HD 8701 is a portable instrument, easy and quick to use, suitable for measuring industrial and civil noise levels. The noise levels can be read easily in dB (A) on the large liquid crystal display which also shows all the information concerning the mode of operation of the instrument. One second after switching on and with a resolution of 0.1 dB, the digital reading gives the continuously updated value of the RMS sound pressure level, with a type A frequency weighting. The single range from 30 to 130 dB further simplifies the use of the instrument, as the user does not have to change scale.
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NI-9203, 200 kS/s, ±20 mA, 8-Channel C Series Current Input Module
779516-01
200 kS/s, ±20 mA, 8-Channel C Series Current Input Module - The NI‑9203 is intended for high-performance control and monitoring applications. It features programmable input ranges and variable connectivity options. To protect against signal transients, the NI‑9203 includes a channel‑to‑earth ground double‑isolation barrier (250 Vrms isolation) for safety and noise immunity.
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Precision Condenser Microphone
377B11
Performance:Nominal Microphone Diameter:1/2 CharacteristicPressureOpen Circuit Sensitivity: 50 mV/Pa50 mV/PaInherent Noise<15 dB(A) re 20 Pa<15 dB(A) re 20 Pa Dynamic Range (3% Distortion Limit)>143 dB re 20 Pa>143 dB re 20 Pa EnvironmentalTemperature Range (Operating)-40 to +248 F-40 to +120 C Temperature Coefficient of Sensitivity (+14 to +122F (-10 to +50C))0.005 dB/F0.009 dB/C
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Channelized Up-Converter
UPCV Series 5” x 2.5” x 0.6”
*Connectorized Package *Wide Choice of Frequency Ranges *IF to Ka-Band Solutions Available *Integrated Filters *Gain Control *USA, RS232 or SPI Control *Internal / External References *Low Power Consumption *Low Phase Noise *Low Spurs
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PXI Quad 4 to 1 RF Multiplexer 3GHz 50 Ohm SMB
40-872-004
The 40-872-004 is a 50 Ohm 4 to 1 RF MUX available with 4 banks in a single PXI slot. It exhibits 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 injection of noise and unwanted signals into the signal paths of the 40-872 has been minimized by careful attention to the mechanical and electrical design.
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MMW Downconverters
Innovative Technical Systems has designed numerous microwave and millimeter-wave downconverters for a variety of applications. Typical downconverters include balanced mixers, phase-locked local oscillators, LO multipliers, and output IF amplifiers. RF LNAs are also provided for many downconverters up to 100 GHz.These downconverters can be designed for numerous communications, radar, and instrumentation applications. We will customize these converters for frequency coverage ,noise figure, gain, and mechanical form-factor.
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Electromagnetic anechoic box/Shield box/Anechoic chamber
The necessity of a wireless system test has risen by the spread of recent wireless telecommunication equipment as shown in cellular phone, wireless LAN, RF-ID tag and ETC (Electronic Toll Collection system). It is necessary for a wireless test to be performed in anechoic environment in which an external noise is intercepted and a radio wave does not reflect internally. An anechoic chamber (room version of a shield box) is proper facilities but needs a wide space and a huge cost. Especially, the equipment under wireless system test on the production line can not radiate any signal radio wave outside before approval. The shield box satisfies these conditions.
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WaveLink Dx20-PT Adjustable Positioner Tip Kit
Dx20-PT-KIT
- Choice of 4 GHz or 6 GHz bandwidth models- Up to 5 Vpk-pk dynamic range with low noise- ±3 V offset range- Low loading and high impedance for minimal signal disturbance- Ideal for DDR2, DDR3, LPDDR2- Deluxe soft carrying case- Innovative QuickLink architecture- Wide variety of tips and leads-- Solder-In Lead-- Optional Positioner (Browser) Tip-- Quick Connect Lead-- Square Pin Lead-- HiTemp Solder-In Lead
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Impedance Stabilization Networks
ISN
They are required for the measurement of conducted common mode noise on Telecom Cables of Information Technology Equipment (ITE). These measurements are necessary to meet the requirements specified in CISPR 22 and CISPR 32 standards.
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Particle Impact Detection System 10
BW-LPD-DAQ4000HD
This system is capable of vibration testing up to 10 pounds and detecting defects that produce noise, such as loose screws, particles, etc. Right from the start of PIND testing, B&W patented the first MIL-STD compliant system outperforming the competition by over 30% better detection rate as tested by the NBS (now National Institute of Science and Technology) in a well known 1978 study (NBSIR 78-1590 NASA).
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Four Channel Low-Noise DC Bias Card
PI-41702
The PI-41702 is a four channel bipolar DC Bias supply that can provide an output current up to 100 mA per channel. The output voltage ranges from –8 V to +8 V, and this card has special filter circuitry to reduce the output noise for those applications that require a low noise bias output. Additionally there is a ‘D’ type connector that allows the introduction of laboratory type supplies to reduce the noise further. To change from using the internal power supplies to external power supplies requires repositioning jumpers. The PI-41702 also has voltage and current sense for remote measurement of the voltage and current levels.
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USB Interface
PK-232/USB
The PK-232/USB brickwall filters have tighter bandwidth and steeper skirts for improved noise and QRM rejection. New PK-232 firmware (Ver. 7.2) allows a wider selection of filters than the original PK-232, so the filter can match the mode. The correct DSP filter is automatically selected when you choose an internal mode. In RTTY, Timewave’s proven Twin Peak Filters pluck the mark and space tones from the noise and QRM for great copy. In PACTOR, the filter bandwidth automatically changes when the baud rate shifts in response to the error rate of the link. In Morse (CW), the operator can preset either 100 Hz or 200 Hz bandwidth. The PK-232/USB is compatible with all Windows W2K,XP,Vista/Win7 software terminal programs for the PK-232.
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Modal Analysis
The Modal Analysis package is part of m+p Analyzer, m+p international's dynamic signal analyzer for noise & vibration measurements and analysis. It provides a complete set of tools for observing, analysing and documenting the vibrational behaviour of machines and mechanical structures. Software modules are available for classical and operational modal analysis, shaker measurements (SIMO and MIMO) as well as for ODS, SDOF and MDOF analysis. A modal model validation module is also provided.
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Ultra-Low Noise Filter, 42 V / 105 MA, 50 Ω
N1298B
The N1298 Series is a collection of low noise filters for the Keysight B2960 Series 6.5-digit low noise source.
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sbRIO-9265, Non-Enclosed, 4-Channel C Series Current Output Module
780921-01
Non-Enclosed, 4-Channel C Series Current Output Module - The sbRIO‑9265 is ideal for interfacing and controlling industrial current-driven actuators at high rates. 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 sbRIO‑9265 requires an external power supply and 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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Real-Time Waveform Averaging Firmware
FWATD
The Advanced Time-Domain firmware option, FWATD, equips the ADQ7 and ADQ14 digitizers with advanced tools for sophisticated time-domain measurements. Multiple steps of noise suppression is provided in order to achieve extreme dynamic range, so that rarely occurring weak signals can be detected and distinguished from noise.FWATD can track and correct for temperature-dependent baseline (DC level) fluctuations, which may otherwise lead to incorrect detection or even detection of false pulses. It supports several types of noise reduction for both random and systematic noise. The flexible architecture and user-defined settings enables tailored noise reduction for various applications.
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Probes, Sensors, Measurement Microphones, Calibrators, Accessories
Passive Probes, Active Probes, USB Isolators, Noise & Vibration Sensors & Accessories, Electro-Acoustic Test Accessories
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Gas Filter Correlation CO Analyzer
Model T300U
Teledyne Advanced Pollution Instrumentation
The Model T300U Trace-level CO analyzer has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. Using IR absorption with a Gas Filter Correlation Wheel, the T300U is designed to allow ultra-sensitive CO measurements while still meeting the requirements for use as a US EPA compliance analyzer.The optical bench is enclosed in a temperature controlled oven, dramatically decreasing instrument noise and drift. The objective and field mirrors in the sample cell are gold plated to maximize signal to noise performance, while a temperature-controlled Nafion dryer on the inlet minimizes water interference caused by ambient humidity changes. Periodically, the T300U seamlessly corrects its baseline by routing the sample through a heated catalytic CO scrubber. This Auto Reference function corrects zero drift and reduces the effect of interferences.
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Ethernet/LXI digitizerNETBOX 16 Bit High Speed Digitizer - 180 MS/s on 24 Channels, 24 Single-Ended Inputs
DN6.447-24
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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NI-9205, ±10 V, 250 kS/s, 16-Bit, 32-Channel C Series Voltage Input Module
779357-01
±10 V, 250 kS/s, 16-Bit, 32-Channel C Series Voltage Input Module - The NI‑9205 performs single-ended or differential analog inputs, with four programmable input ranges for each. It is an effective combination of channel count and speed at a low price for an economical multifunction system. You can choose from four programmable input ranges. To protect against signal transients, the NI‑9205 includes up to 60 V of overvoltage protection between input channels and common. In addition, the NI‑9205 also includes a channel-to-earth ground double isolation barrier for safety, noise immunity, and high common-mode voltage range. It is rated for 1,000 Vrms transient overvoltage protection.
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Fixed Source PLL DRO Replacement
ESP Series 2.25” x 2.25” x 0.6”
*Connectorized Package *Exceptionally-Low Phase Noise *DRO Replacement *Optional Internal Reference *Robust Designs Available *Optionally Hermetically-Sealed
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NI-9207, 500 S/s, 16-Channel C Series Voltage and Current Input Module
785040-01
500 S/s, 16-Channel C Series Voltage and Current Input Module - The NI‑9207 is a combination voltage and current input module designed with industrial systems in mind. It features eight current and eight voltage input channels, with built-in noise rejection.
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Loudspeaker-Microphone Probe
Zircon
The Zircon is a loudspeaker-microphone probe for measuring in situ the absorption and reflection properties of surfaces. These may be indoor surfaces, such as in concert halls and gyms, or outdoor surfaces, such as road surfaces (ISO 13472-1), sound barriers installed in a free field (NF S 31-089) and traffic noise reducing devices (CEN/TS 1793-5)
