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Noise

a signal's fluctuation other than that desired.

See Also: Pink Noise, White Noise, RF Noise, Distortion, NVH


Showing results: 2101 - 2115 of 2118 items found.

  • AERINOS Sigfox IoT

    Infinite Industrial Informatics Lt

    Sigfox is a communication protocol that is used to read data from sensors through a fixed network of base stations. It works like a low cost “SMS” service. As an end-user, you only need to buy a subscription to connect to the data network operated by SIGFOX. Sigfox employs a proprietary Ultra Narrow Band (UNB) radio technology that enables communication using the Industrial, Scientific and Medical ISM radio band, which uses 868MHz in Europe and 902MHz in the US. It has the advantage of covering larger areas than other fixed local systems.The overall Sigfox network topology has been designed to provide a scalable, high-capacity network, with very low energy consumption, while maintaining a simple and easy to rollout star-based cell infrastructure. The density of the cells in the Sigfox network is based on an average range of about 30-50km in rural areas and in urban areas, where there are usually more obstructions and noise is greater, the range may be reduced to between 3 and 10km.According to the latest numbers, Sigfox has a nationwide live coverage in 6 countries and in 14 other countries it is deploying and rolling out ts network. By end 2018, the ambition is to cover 60 markets.

  • Voice Monitoring

    VOIP Echo - GL Communications Inc.

    *The Voice Band Analyzer (VBA) is an analysis tool for monitoring the quality of voice band traffic (including hybrid echo) over VoIP, TDM and wireless networks*VBA works in conjunction with GL's TDM, Packet, and Wireless non-intrusive capture products, such as T1 and E1 Call Capture and Analysis, VoIP PacketScan&trade, and GSM, CDMA, and 3G Call Capture Products. VBA instantly detects voice file captures and with appropriately installed analysis modules, monitors speech levels, noise levels, and hybrid echo. Other analysis modules such as ITU-T P.561, P.562, P.563, fax and modem analysis, and many others can be hosted as plug-ins.*The VBA application can also operate on pre-captured files. It supports A-Law, µ-Law, 16-bit PCM (Intel), 16-bit PCM (Motorola) and MS Wave file formats.*Required software PKV100 and VBA032 at each probe location and PKV170 PacketScanWEB - Network Surveillance Software*Required hardware - 1U rack PC with sufficient hard disk for capturing over 10,000 calls (80 GB HD) for each VBA colocated with a probe*Additional hardware - PC for PKV100 PacketScan™ Software

  • Power Supply

    CAEN S.p.A.

    The Power Supply Systems are the heart of any experiment. They provide the High voltage and Low voltage required by the detectors and by the related front-end electronics. The quality of the power supply is critical to obtain the best performance from the set-up. The sensibility of modern detectors, in fact, make them susceptible to any even small variation in the power supply, and so features like low Noise, low Ripple and high stability become essential in the design of a performing power supply system. Strong of 40 years of collaboration with the most important research labs worldwide CAEN offers today sophisticated High Voltage Power Supply and Low Voltage Power Supply Systems. The demonstration of this successful long-standing tradition is the “CMS Crystal Award 2009” that CAEN received for the development and production of the power system for the CMS tracker. CAEN offers a wide selection of Power Supplies in different form factors and standards:- For smaller set-ups Standalone or modular (NIM / VME) products or are the ideal fit.- For bigger set-ups, where a high number of High voltages and Low voltages is required, the Mainframe Systems and Boards (up to 48 channels/board, up to 768 channels in a single Mainframe) are the most recommended.

  • Audio Generator

    AG-51 - Potomac Instruments, Inc.

    The AG-51 Audio Generator contains a low distortion 20 Hz to 200 kHz sine wave generator, an SMPTE standard intermodulation signal generator and a fixed frequency sine wave generator at 3.15 kHz for wow and flutter tests. Signal outputs are simultaneously available at levels of up to +20 dBm (equivalent sine wave power for complex signals) at separate left (L OUT) and right (R OUT) output connectors. Outputs may be selected for left (L) only, right (R) only, left and right in phase (L+R), and left and right in phase opposition (L-R). Fully balanced or unbalanced outputs at impedance levels 150 ohms or 600 ohms are front panel selectable. Three precision attenuators (10, 1.0 and 0.1 dB) provide a dynamic range of 99.9 dB in 0.1 dB steps. Attenuator dials display the output level directly in dBm in the 150 ohm source impedance configuration. Automatic output leveling circuitry with a built-in self-test feature provides a constant output level thereby eliminating the need for output metering. In the TEST mode the generator output level is reduced to zero, a useful feature during noise measurements.

  • 32-CH/64-CH Isolated Digital I/O PCI Express Card With Digital Filter

    AX92351 - Axiomtek Co., Ltd.

    The AX92351 is a 64-ch isolated digital I/O PCI Express card with 2,000VDC isolation protection. This high-density digital I/O card with high-speed PCI Express x1 bus is excellent for use in applications requiring digital control or monitoring, such as semiconductor machinery, PC-based industrial machinery, programmable I/O logic control, and process status monitoring. The AX92351 features 32 isolated digital input channels and 32 isolated digital output channels with isolation protection of 2,000V for industrial applications where high-voltage isolation is required. It is equipped with a board ID feature for easy identification of multiple cards in single system. There is a digital filter function to prevent input signals from carrying noise or a chattering. Each isolated input has a sink or source current which supports dry and wet contact for maximum application flexibility. The card has a wide range of input voltage from 10 to 30V to meet most industrial application needs. The AX92351 also provides two interrupt sources on digital input channels. Digital output has open controller and supports maximum 30VDC. The read-back function is another useful function that allows monitoring each output port.

  • 600W Switching Mode DC Power Supply (120V) - Laboratory Grade Power Supply with 30V/20A Max Output

    Extech 382275 - Extech Instruments Corporation

    The Extech 382275 power supply is an easy-to-configure, highly stable, lab grade DC power supply with maximum output power of 600 Watts. The new DC power supply offers two degrees of control over both current and voltage outputs (course and fine). Output is adjustable from 0 to 30 Volts DC and 0 to 20 Amps with (0.1 Volts/Amps resolution). Dual green LED displays offer easy-to-read, high contrast readouts of voltage and current values. The 382275 offers four operating modes: normal mode, with values controlled by front-panel knobs; preset mode, which offers three popular voltage presets at 20 Amps: 5.0 Volts, 13.8 Volts, and 25 Volts; set mode, with three user-customizable presets; and remote control mode, where the user can remotely adjust output power on/off, voltage and current. Other features include automatic constant current and voltage, high RFI immunity, excellent EMI, a thermostat-controlled variable speed fan, as well as over-voltage, over-temperature, and short circuit protection. The 382275 offers a compact, low profile design and small footprint without compromising output noise and transient response factors. Complete with power cord.

  • High and Low Temperature Humidity Chamber

    GDJS/GDJW - Lisun Electronics Inc.

    •The chamber is produced by SUS304 Steel, the temperature keeping material is produced by Polyurethane hard foam and ultra-fine fibre glass, the doorframe heat insulated by Double high temperature aging silicone rubber door sealing strip. •The temperature controller is used by Korean TEMI display in English/Chinese and German Siemens PLC, it can be communicated to PC via RS-232. The temperature accuracy is 0.1℃ and humidity is 0.1%R.H •The temperature sensor is platinum PT100 Ohms/MV resistor •The heating system is full separately system which produced by Nickel chromium alloy electric heating type heater •The cold system is applied by fully enclosed fan cooled single-stage and cascade refrigeration mode, the compressor is from France TECUMSEH brand which can allow you get after sales support from many countries •The cyclical system is applied by High temperature low noise air conditioning type motor and Multi blade centrifugal wind wheel •The safety self-protection function include Electric leakage, short circuit, over temperature, motor overheating, compressor pressure, overload, over-current protection •Working Power: AC380V±10% 3phases and frequency 50Hz/60Hz •Working Environmental: Temperature is 5℃~+30℃  Humidity ≤85%R.H

  • Super Phosphor Oscilloscopes

    SDS2000X-E Series - SIGLENT Technologies

    The SDS2000X-E series employs a new generation of SPO technology. With its excellent signal fidelity, background noise is lower than similar products in the industry. It has a minimum vertical input range of 500 uV/div, an innovative digital trigger system with high sensitivity and low jitter, and a waveform capture rate of 400,000 frames/sec (sequence mode). It also employs a 256-level intensity grading display function and a color temperature display mode not found in other models in this class. Siglent’s newest oscilloscope offering supports multiple powerful triggering modes including serial bus triggering and decoding. History waveform recording and sequential triggering allow for extended waveform records to be captured, stored, and analyzed. Also included is the deep memory FFT. This math function uses upto 1 M samples for the FFT calculation, providing the SDS2000X-E with very high frequency resolution. The hardware co-processor executes true fast measurement and math to all of 28M sample points so that there is minimal distortion on analysis. It also supports searching and navigating, on-screen Bode plot, 16 channel digital /MSO (optional), an external USB powered 25 MHz AWG function generator module (option), a USB WIFI adapter for wireless control and monitoring (option), and an embedded application that allows remote control via web browser. The features and high-performance of the SDS2000X-E oscilloscopes cannot be matched else anywhere at this price.

  • Chemiluminescence Ammonia Analyzer​​​​

    Model T201 - Teledyne Monitor Labs

    The Model T201 combines a specially configured chemiluminescence analyzer with an external thermal converter to give stable and repeatable NH3 measurements at very low levels. In addition, the T201 provides simultaneous values for NO, NO2, and NOx concentrations. The T201 is ideal for trace ammonia monitoring applications in ambient air as well as in clean rooms and make-up air units. Optional zero and span valves allow automatic, unattended calibration checks.The Model T201 achieves its remarkable stability by means of an AutoZero valve which measures and corrects for zero noise. Multiple self-checks are performed continuously to insure maximum up-time while an innovative sample path, plumbed with specially conditioned materials, preserves the NH3 sample and reduces interferents to a minimum. All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports either locally or by remote connection.The Model T201 comes with the Numaview™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software.​​

  • Mid-Range Gas Filter Correlation Carbon Monoxide Analyzer​

    Model T300M - Teledyne Monitor Labs

    The Model T300M CO analyzer measures low to mid ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high-energy IR light source is alternately passed through a CO filled chamber and a chamber with no CO present. The light path then travels through the sample cell, which has a folded path of 2.56 meters.The energy loss through the sample cell is compared with the span reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing excellent performance from low to high range.All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T300M comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software. ​​

  • Gas Filter Correlation Carbon Dioxide Analyzer

    Model T360 - Teledyne Monitor Labs

    The Model T360 CO2 analyzer measures Carbon Dioxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high-energy IR light source is alternately passed through a CO2 filled chamber and a chamber with no CO2 present. The light path then travels through the sample cell, which has a folded path of 2.56 meters.The energy loss through the sample cell is compared with the reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing excellent performance over a wide concentration range.All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.​The Model T360 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software​.​​​

  • ​Mid-Range Gas Filter Correlation Carbon Dioxide Analyzer​

    Model T360M - Teledyne Monitor Labs

    The Model T360M CO2 analyzer measures Carbon Dioxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high-energy IR light source is alternately passed through a CO2 filled chamber and a chamber with no CO2 present. The light path then travels through the sample cell, which has a folded path of 1.28 meters.The energy loss through the sample cell is compared with the reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing excellent performance over a wide concentration range, making this instrument an ideal choice for CO2 reporting requirements associated with dilution CEMS.All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T360M comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software. ​

  • ​Gas Filter Correlation Carbon Monoxide Analyzer​

    Model T300 - Teledyne Monitor Labs

    The Model T300 measures low ranges of carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high energy IR light source is alternately passed through a CO filled chamber and a chamber with no CO present. The light path then travels through the sample cell, which has a folded path of 14 meters. The energy loss through the sample cell is compared with the span reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing extreme sensitivity. All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information, is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T300 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software​.​​

  • Fully Automatic Colorimeter

    DRK103C - Shandong Drick Instruments Co., Ltd.

    (1)5 inch TFT color LCD touch screen, the operation is more humanized, new users can be mastered in a short period of time using the method.(2)Simulation of D65 lighting lighting, using CIE1964 complementary color system and CIE1976 (L*a*b*) color space color difference formula.(3)The motherboard brand new design, using the latest technology, CPU uses 32 bits ARM processor,improve the processing speed, the calculated data is more accurate and rapid electromechanical integration design, abandon cumbersome testing process of the artificial hand wheel is rotated, the real implementation of the test program, a determination of the accurate and efficient.(4)Using d/o lighting and observation geometry, diffuse ball diameter 150mm, diameter of the testing hole is 25mm.(5) A light absorber, eliminate the effect of specular reflection.(6)Add printer and imported thermal printer, without the use of ink and color, no noise when working, fast printing speed.(7) Reference sample can be physical, but also for data,? Can store up to ten only memory reference information.(8) Has the memory function, even if the long-term shutdown loss of power, memory zeroing, calibration, standard sample and a reference sample values of the useful information is not lost.(9) Equipped with a standard RS232 interface, can communicate with computer software.

  • ELT STALKER Vector-finder

    VF-121 - National RF, Inc

    The Vector-Finder Types VF-121 and VF 121A are unique in the Vector-finder series of direction finding antennas. They incorporate a proven design, electro statically shielded loop sensing element with modern solid state low noise analog and digital technology to allow detection and location of aircraft band signals. Both the VF-121 and the VF 121A incorporate a unique digital modulator which allows the user to more easily home-in on unmodulated carriers. Such cases occur at airports when transmitter may be accidentally keyed on during aircraft overnight layovers. The VF-121 is specifically designed to be used on airport premises where signal strengths are high. To compensate for very strong signals, an integral attenuator is also incorporated to allow the user to operate the unit close-in to aircraft. The VF-121A differs in that a high gain, low-noise preamplifier is utilized with the sensing element in order to hunt signals that may be weak or at a distance. The unit is ideally suited for the location of ELT transmitters in the field. Both units are tunable over the 118 MHz to 130 MHz aircraft frequencies and interface directly to the user’s aircraft band receiver or transceiver via the antenna jack. With the antenna system connected to the receiver, the user will hear the desired signal. If the signal is unmodulated, the digital modulator will generate a tone on the carrier. When the handheld unit is rotated about, an audible null on the received signal or the generated tone will be heard. This null aligns with the axis of the equipment case and represents the direction of the received signal. This direction may be read from the black dial compass mounted on the top of the enclosure. As the response is bi-directional, triangulation may be used to determine the true bearing when the true direction is not known.

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