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Frequency

number of times waves occur per unit time.

See Also: Gigahertz, Microwave, Terahertz, Band


Showing results: 4126 - 4140 of 4207 items found.

  • Acoustic Modem Option for Control Module

    Teledyne Marine Gavia ehf.

    ​Gavia AUVs can be fitted with the Teledyne Benthos ATM-900 Acoustic Modem. The ATM-900 Series Acoustic Telemetry Modem is the most advanced, multipath and noise tolerant, modem available. They are designed to meet both the high data rate requirements of commercial users, and the higher reliability, lower data rate requirements of the military. The modems employ two modulation techniques: phase shift keying (PSK), which provides the highest bit rate, and multiple frequency shift keying (MFSK), which provides reliability in a multipath environment, or when the modems are required to operate in a low signal-to-noise (SNR) environment. The ATM-910 Series can transmit data using PSK modulation for reception by a Gavia Modem Deckbox, but receives data using MFSK modulation only. MFSK modulation is a spread spectrum modulation process that transmits multiple tones simultaneously.

  • Ensure Accurate Screening, Diagnosis & Monitoring

    Ultrasound QA Solutions - Sun Nuclear Corp.

    Gammex is the only ultrasound QA solutions manufacturer with expertise in medical physics since 1969.The 156 phantom helped establish the mammography repeatability and reproducibility standard: any mammography technologist (radiographer) at any time, on any machine, can provide the same image set to help detect breast cancer.We collaborated with clinical and academic thought leaders to develop our patented HE Gel and the first portable Doppler Flow phantoms in the world. HE (High Equivalency) Gel is what sets Gammex ultrasound products apart; it helps ensure all your transducers and system settings are fully tested across the entire frequency range from 2 to 18 MHz. Our HE Gel combined with our medical physics and quality control expertise gives you confidence with consistent diagnostic image quality in clinical applications.

  • Ultrasonic & Mass Flow Meters

    GAO Tek Inc.

    GAOTek offers high quality, affordable, secure and accurate Ultrasonic Flow Meters for sale to the United States, Canada and globally. Ultrasonic Flow Meters often have a sending and a receiving transducer for measuring the velocity of fluids to accurately calculate the flow of volume in a pipe by using sound waves, acoustic waves or vibrations with a frequency of >20 KHz. GAOTek offers a variety of top-notch Ultrasonic Flow Meters designed for different environments, from wide pipes to an all liquid environment, such as sea water, oil, sewage, alcohol, et al. GAOTek’s easy to use Ultrasonic Flow Meters come with a built-in printer and a built-in data logger. They provide accurate readings and have an accuracy rate of ±1% at rates greater than 0.2mps. They also offer multi-language menu selections, long lasting battery life for continuous usage, large LCD screens, and a huge storage.

  • SINE FBI Charts

    Applied Image, Inc.

    There are two SINE Sinusoidal arrays designed for FBI applications: the SINE M-13-60-S-RM and the SINE M-13-60-FBI Kit.The SINE M-13-60-S-RM was designed jointly by the Federal Bureau of Investigation, of Washington DC, and MITRE, of Bedford MA. The primary function of this Target is for computing Modulation Transfer Function (MTF) evaluation in live scanner fingerprint systems for conformance to Integrated Automated Fingerprint Identification Systems (AFIS) image quality requirements. The array is on reflective material measuring 16mm x 16mm with sinusoidal arrays ranging in frequency from 1.0 to 10.0 cycles per mm; with nominal modulation of the sinusoidal areas at 60%. The top and bottom rows are density scales, from 0.20 to 1.20 densities.The SINE M-13-60-FBI Kit consist of two individual components, the SINE M-13-60-1X-RM and the RR1-N-RM Ronchi Ruling grating.

  • Counter/Timer Board

    USB-CTR-15 - Acces I/O Products, Inc.

    The USB-CTR-15 is an ideal solution for adding portable, easy-to-install, counter/timer capabilities to any PC or embedded system with a USB port. This board is packaged in a small, rugged, industrial enclosure and features 15 independent 16-bit counter/timers. The unit is a true USB 2.0 device, offering the highest speed available with the USB bus. It is fully compatible with both USB 1.1 and USB 2.0 ports. The unit is plug-and-play allowing quick connect/disconnect whenever you need additional counter/timer devices on your USB port. The USB-CTR-15 can be used for a wide variety of measurement applications including event counting, frequency measurements, position measurement, pulse counting, pulse-width modulation and pulse generation. The OEM version provides just the board without the enclosure or external screw terminal board and is ideal for a variety of embedded OEM applications.

  • Waveguide Bends

    Fairview Microwave Inc.

    Fairview Microwave’s lines of precision waveguide bends are widely used in applications such as high efficiency RF, microwave and mm-wave transmissions, satellite and military communications, radar, telecom, instrumentation and test benches. In waveguide systems that require a signal to turn or bend 90 degrees, Fairview’s waveguide bends are used to facilitate that bend or turn without degrading the transmission signal. These WG bends operate from 5.85 GHz to 90 GHz across 12 frequency bands and are available in sizes from WR-12 to WR-137. This family of waveguide bends also boast low loss and VSWR as low as 1.08:1 and are available in both E-plane and H-plane configurations. They are constructed using gold plated, oxygen free hard copper (OFHC) or painted copper alloy depending on the model and are also offered with either a UG-style flange per the military standard or a CPR-style flange. Many models are RoHS compliant.

  • The Leading Measurement System for the Analysis of Porous Materials

    ELWIS - Autoneum Holding AG

    ELWIS (Evaluation of Light Weight Impedance System) offers a full and rapid characterization of porous materials based on the analysis of a single sample. The ELWIS system consists of the ELWIS-A and ELWIS-S components which can be used independently from each other although both applications are needed for a complete material simulation.ELWIS-A measures acoustic parameters that are needed to evaluate the acoustic performance of sound insulation and sound-absorbing multi-layer materials. An additional impedance tube for absorption measurements at higher frequencies is available for ELWIS-A.ELWIS-S measures structural parameters that are needed to simulate the dynamic and acoustic behavior of sound packages in the medium to low frequency range (including the "Poisson Ratio" for foam materials).ELWIS is very easy to operate: Thanks to its user-friendly software, the system can also be used to obtain reliable results by users with only limited experience in the characterization of porous materials.

  • Regenerative Grid Simulator

    61800 - Chroma Systems Solutions, Inc.

    Power rating: Up to 300kVA, single or three phase outputOutput Voltage: 0~330V L-N / 0~570V L-L0~400V L-N / 0~692V L-L opt. without using a transformerOutput Frequency: DC, 30Hz~100HzMaximum power delivered down to 200VAC L-NFull 4 quadrant, fully regenerative up to 100% of output current ratingSpecifically designed for PV inverter, Smart Grid and EV related test applicationsProgrammable slew rate settings for voltage and frequencyProgrammable voltage and current limitsTurn on, turn off phase angle controlLIST, PULSE, STEP mode functions for testing Power Line Disturbance (PLD) simulationVoltage dips, short interruption and voltage variation simulationHarmonics, inter-harmonics waveform synthesizerComprehensive measurement capability, including current harmonicsAnalog programmable interfacesRemote interface: GPIB, RS-232, USB and EthernetParallel output for higher power applications (three phase only)

  • 1000A True RMS AC/DC Clamp Meter with IR Thermometer

    Extech EX830 - Extech Instruments Corporation

    The EX830 clamp meter features a unique, built-in, non-contact Infrared thermometer with laser pointer to monitor temperature and locate hot spots on motors and electrical devices. A large 4000 count LCD display with bright back lighting allows you to see the reading in dim light. The ergonomically designed double-molded housing offers a better grip for one-hand operation. The 1.7" (43 mm) diameter jaw opening is large enough for conductors up to 750MCM. In addition to AC/DC current, it measures AC/DC voltage, resistance, temperature, capacitance, and frequency. It features: diode test, audible continuity beeper, min/max, data hold, auto power off, and a fast peak hold that captures inrush currents and transients. Comes complete with test leads, 9V battery, type K bead wire temperature probe (-4 to 482°F/-20 to 250°C) and a belt holster.

  • Manual Oscillators

    MOS-01, -01A - Compact Power Company

    The MOS-01 manual oscillator module is used as a quality, general-purpose sinewave oscillator and digital readout monitoring system in the MAC-01, -02, or -03 AC Power Sources/Frequency Converters. The unit has guaranteed operating range of 20 HZ to 20 KHZ which is covered in three one-decade scales. The LCD digital metering system is switch-selectable to readout either frequency, voltage or current. A toggle switch selects the input for the attached AC Power Source/Frequency Converter to originate from the manual oscillator itself or from an external laboratory or programmable oscillator source. With oscillator mode switch in Internal position, the BNC connector delivers the signal to drive additional slave units or for oscilloscope sync or monitoring. BNC input/output is completely isolated with 1500 VAC breakdown and excellent common mode rejection. The oscillator modules must be factory installed and calibrated.

  • Non-Contact Voltage Tester

    NCVT-3 - Klein Tools, Inc.

    Provides non-contact detection of AC voltage.Detects 12 – 1000V AC with simultaneous visual and audible voltage indicators.Bright flashlight illuminates work area and may be used independent of voltage detection function.Visual LED bar graph indicates the presence of voltage – the higher the voltage sensed, or the closer to the voltage source, the more LEDs light up.Bar graph visual voltage indicator utilizes up to five vibrant LEDs for easy interpretation/viewing.Audible voltage indicator beeps at a greater frequency the higher the voltage that is sensed, or the closer to the voltage source.“Auto Power-Off” conserves and extends battery life.Screw-thread battery cap with O-ring ensures protection against dust and water ingress.Lightweight, compact tool with pocket clip provides convenient storage and quick access.IP67: Dustproof and waterproof.6.6 feet / 2 meter drop protection.CAT IV safety rating for 1000V.Conforms to CE requirements.

  • HandyScope HS4 DIFF: 50 MS/s 100MHz BW, 4 Channel, USB Differential Digital Storage Oscilloscope, Spectrum Analyzer, Voltmeter, Transient Recorder

    HS4-50-DIFF - TEAM SOLUTIONS, INC.

    * record length is 131060 samples * 128K samples on screen without loss of information * free settable pre trigger position, from 0 to 100% * easy time axis zoom using unique scaleable sroll bar slider * free adjustable sample frequency * vertical offset and gain adjustable with graphical shiftable and scaleable axis * WYSIWYG trigger level, slope and hysteresis adjustment using combined trigger control * Auto setup to reduce setting time with unknown signals * linear/quadratical interpolation * extended cursor measurements * all settings accessable through popup menus * storing and recalling reference signals * software math channel available * easy to use speedbutton toolbar for easy access of all functions * comment tags to mark specific events in the signal * color hardcopy supported * explanatory comments with all controls * envelope mode * averaging of signals

  • Preamplifiers

    LNA Series - Teseq AG

    Low noise amplifier with 12.5 dB of gain covering the nominal frequency range 1 MHz to 3 GHz and can be used in the range from 200 kHz to 4 GHz. With its high gain and low noise figure, it will significantly increase the sensitivity of virtually all spectrum analyzers and other RF measuring instruments. All measuring instruments have a 'noise figure', which is a measure of how good the instrument is at measuring low level signals, the lower this figure, the better, although the lowest signal level will still be governed by the measurement bandwidth. A typical spectrum analyzer may have a noise figure of 20 dB or more, whereas a typical receiver may have a noise figure of 10 dB. The preamplifier has a noise figure of typically 4 dB, significantly enhancing the low level performance of such instruments, enabling signals that were previously masked by noise to be seen.

  • Handheld RF Spectrum Analyzer With 1MHz To 1.3 Or 2.7GHz Bandwidth Options

    PSA Series 3 - Aim-TTi

    1MHz to 1300MHz or 2700MHz frequency rangeResolution bandwidths of 300Hz to 10MHz 1:3:10-105dBm typical noise floor at -40dBm reference levelMeasurement in dBm or dBμV, mV or μWZero span mode with AM and FM audio demodulationTrace modes of normal, peak hold and trace averageLive, View (copy) and Reference traces in contrasting coloursTwin markers with readout of absolute & difference valuesSmart marker movement with selectable peak trackingFrequency counter with 10Hz ResolutionFrequency presets and independent state storageAuto-find automatically sets sweep parameters for the highest signal foundUnlimited storage for waveforms, set-ups and screensUser assignable file names, file stamping from real-time clockUSB interfaces for Flash drives and PC connectionComprehensive status and context sensitive help screensMore than 3 hours continuous operation from a chargeSmaller and lighter than other spectrum analyzers (weight only 0.58 kg)

  • Non-Contact H.V. Detector

    278 HP - Standard Electric Works Co., Ltd

    ● Protection class : IP65.● 3 LED indicators in a circle for easier viewing in any directions (360° LED indication).● 8 voltage settings : 240V, 2kV, 6kV, 11kV, 22kV, 33kV, 132kV, 275kV● Bright LED visual indication● Frequency range: 40~70Hz● Longer hood makes LED indicators more visible● Audible indication● Easy-to-prove method.● Self-test function● Power source : 1.5V "C" type battery × 3● High impact nylon casing.● Non-contact detection by proximity● Compatible with most hot sticks.● Lightweight, robust & compact.● Suitable for indoor and outdoor use.● Easy access to batteries.● Special ranges are available upon request. ● The maximum detection range can be 500kV.● Meets EN 61326-1 CISPR 11 EN 61000-4-2 EN 61000-4-3 EN 61000-4-8

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