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Low Frequency

Low Frequency 30 to 300 kHz.

See Also: VLF, ELF


Showing results: 631 - 645 of 723 items found.

  • Erbium Fiber Frequency Comb

    AOSense

    Detailed description of item: The AOSense frequency comb is a low noise, polarization maintaining (PM) device. Key features include a PM fiber architecture centered at 1550nm with turnkey modelocking; a free-running linewidth of the carrier-envelope offset frequency of <200 kHz; a temperature-insensitive all-fiber f-2f interferometer exhibiting fceo beatnotes with SNR > 45dB (300kHz RBW); and dual fast/slow cavity length actuators with a bandwidth of >300 kHz. The repetition rate of the comb is factory set and allows matching across multiple combs for dual comb applications. The optics package incorporates an optical heterodyne module designed for locking to the comb to an ITU-specified laser reference. The comb is capable of supporting an Allan deviation of < 5 x 10-18 at 1 second and ~10-20 after 105 seconds. Add-on features include all fiber extensions to visible wavelengths corresponding to several atomic transitions. An integrated comb electronics package is currently under development.

  • Test Board For SFP+ / SFP28 Transceiver

    ESFP280 - Optellent, Inc.

    The OPTELLENT ESFP280 is a cost-effective and convenient test board for testing SFP/SFP+/SFP28 optical transceivers in R&D and manufacturing environments. The ESFP280 is equipped with high quality RF connectors for data signals and test points for low frequency control and status signals. The ESFP280 is equipped with power supplies to enable voltage margining. Key status signals are displayed using LED indicators.

  • CAT-5 Cable Equalizers

    Analog Devices Inc.

    Analog Devices high speed, differential receivers and CAT-5 cable equalizers compensate for the transmission losses of UTP and coaxial cables up to 300 meters in length. Our design techniques for products such as the AD8123 optimize performance for low noise, short-to-medium range applications, while also providing the high gain bandwidth required for long cable equalizations. Various gain stages are summed together to best approximate the inverse frequency response of the cable. Logic circuitry controls the gain functions of the individual stages so that the lowest noise can be achieved at short-to-medium cable lengths.

  • Solid State Broadband High Power Amplifier

    Model 2215 - Empower RF Systems, Inc.

    The 2215 is suitable for octave bandwidth high power CW, modulated, and pulse applications. This amplifier utilizes high power GaN devices that provide wide frequency response, high gain, high peak power capability, and low distortions. Exceptional performance, long-term reliability and high efficiency are achieved by employing advanced broadband RF matching networks and combining techniques, EMI/RFI filters, and all qualified components. The amplifier is constructed within a single 5RU drawerincluding the forced air-cooling. Available operating voltage configurations are single-phase 220 VAC up to 400 Hz and 28 VDC.

  • Pen Vibration Meter - Measures RMS Acceleration and Velocity

    Extech VB400 - Extech Instruments Corporation

    The VB400 is designed to provide easy and accurate velocity and acceleration measurements on industrial machinery. Measurement ranges including Acceleration (RMS): 656ft/s2; 20.39g; 200m/s2; and Velocity (RMS): 7. 87in/s; 2.00cm/s; 200mm/s. Wide frequency range from 10Hz to 1kHz. Lt has resolutions of 1ft/s2; 0.01g; 0.1m/s2 and 0.02in/s; 0.01cm/s; 0.1mm/s. Basic accuracy of ±(5% + 2 digits). Additional features include Zero adjustment, Data Hold, and Low battery indicator. Water and dust resistant to IP65. Complete with test pin tip, magnetic base, 4 × AAA batteries, and pouch case.

  • Echotrac MKIII

    Teledyne Marine Odom Hydrographic

    The Echotrac MKIII is the only sounder on the market offering you the choice of either a high resolution thermal paper recorder or a full-sized high bright color LCD chart in interchangeable module format. Both high and low channels feature frequency agility, enabling the operator to precisely match the transceiver to almost any existing transducer. This ability minimizes near-surface noise caused by transducer ringing while increasing echo return strength. The MKIII is capable of both shallow and deep water operations and features unsurpassed interfacing flexibility with four serial ports and high speed Ethernet capability for maximum efficiency.

  • RMS to DC Converters

    Analog Devices Inc.

    RMS-to-DC converters manufactured by Analog Devices are used in a wide variety of applications where precision and low power measurement of ac signals is the prime objective. An ADI rms-to-dc converter offers real time measurements, meaning there are no latency issues such as those that limit the frequency response of other technologies—the dc output is simply the equivalent of the rms input, over a wide range of input frequencies, and for complex waveforms not limited to sine waves. ADI offers a wide range of rms-to-dc converters optimized for the most demanding performance, power, and cost applications satisfying true rms needs.

  • BAW Devices

    Teledyne Defense Electronics

    Teledyne RF & Microwave has been producing Bulk Acoustic Wave (BAW) delay devices since the early 1960’s. Over the years,Teledyne has constantly improved BAW technology and is currently the world’s only supplier of microwave bulk acoustic wave delay devices. Markets for BAW devices include instrumentation and radar altimeters and are available in connectorized, pin and surface mount configurations.BAW devices operate as low as 300 MHz and as high as 17 GHz, usually in sub-bands of around 10%. Depending on the delay and frequency of operation the insertion loss is in the range 30 dB to 90 dB.

  • LNA, Millimeter-wave Power Amplifier And Rack Mount Amplifier

    Panda Microwave Limited

    Panda Microwave design up to 50GHz broadband power amplifier, including LNA, CW and pulse medium, Rack Mount Amplifier and millimeter-wave high power amplifier. Our amplifiers cover frequency range from 100MHz to 50GHz and use Thin-film Technology. Low noise amplifier have superior noise figure numbers and a variety of models. Gain block low noise amplifiers provide all around gain where noise is not critical. High power amplifier system equipment is available with either manual or digital control interfaces, power capacities up to 100W pulse power.

  • HV AC Voltage Test Systems

    Fivestar HV Testing Equipment Co., Ltd.

    FSHV offers three different types of AC voltage test systems, the conventional type is AC test transformer design, mainly for testing objects of medium & low capacitance products, particularly for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (like inductive voltage transformers). Another is AC resonant test systems, according to series resonance circuit XL=XC (2πfL=1/2πfC), by setting F frequency of power supply or L inductance of reactor, generate a pure sinusoidal waveform of the test voltage, and the required input power is only 1/Q. Variable frequency type operates in a frequency range from 20Hz to 300Hz, ideal for field commissioning test of power cables and GIS/GIL. Variable inductance type outputs continuous AC voltage of power frequency (50/60Hz), mainly for factory testing of high and ultra-high voltage cables, power transformers, GIS, etc.

  • Single Phase AC Power Source

    APS51 Series - Twintex Electronics Co., Ltd

    ★ Full range adjustable output: Low 1-150V, High 150.1~300V, resolution 0.1V★ Output frequency: 45-250Hz★ Fast output key for 110V/220V and 50Hz/60Hz★ Panel lock function★ 3 sets memories for voltage and frequency settings★ Unlimited rotary knob for voltage and frequency adjustment, minimum step 0.001★ Strong overload capacity, overload 300% within 2s★ Withstand transient current 1.5 times of rated current within 0.1s★ Response time less than 20ms for 100% load and unload★ 5 digits high accuracy LED display for voltage, current, frequency, active power, power factor★ With soft-start function, set voltage rise time (0~99.999s), avoid damage by surge current during load start-up★ Over load, over current, over temperature and short circuit protections★ RS232 interface

  • Electromagnetic Radiation Analyzer

    SEM-600 - Beijing KeHuan Century EMC Technology Co,.LTD

    Broadband Electromagnetic Radiation Analyzer SEM-600 can accurately measure various complex electromagnetic environments. The probe covers all frequencies from low frequency to microwave radiation. It can measure electric field strength and magnetic field by equipping different types of probes. Intensity (magnetic induction) and power density, it is also equipped with ordinary probes and other weighted probes based on human safety standards.

  • RF Amplifiers

    US Technologies, Inc.

    UST specializes in the testing, repair and refurbishment of all types of RF amplifiers (broadband and narrowband), microwave amplifiers and millimeter-wave amplifiers: solid state, thin film, traveling wave tube (TWT), low noise RF amplifiers, intermediate power RF amplifiers, limiting RF amplifiers, doubler RF amplifiers, driver RF amplifiers, variable gain RF amplifiers, and active frequency multipliers.

  • EXG X-Series Microwave Analog Signal Generator, 9 kHz to 40 GHz

    N5173B - Keysight Technologies

    Balance budget & performance to address parametric testing of microwave components & receiversPerform LO up conversion for microwave backhaul links or CW blocking for receiver testingMaximize test throughput with 600-s frequency switchingCharacterize microwave filters & amplifiers with the best combination of output power, low harmonics & full step attenuationUse as a high-stability system reference: the standard high-performance OCXO has an aging rate of 5x10-10 parts/day

  • Digital Earth Resistance Tester

    8020 ER - Standard Electric Works Co., Ltd

    ● Capable of measuring earth resistance and earth voltage. ● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.● Frequency : 820Hz.● 0Ω adjustment.● Battery operated.● Data hold function.● Low battery indication.● Calibration performed with supplied test leads.● Simplified measurement probe is also provided for two-wire measuring method.

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