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Frequency Standards

Devices that produce a known frequency.

See Also: Hydrogen Frequency Standards, Rubidium Standards, GPS Clocks


Showing results: 466 - 473 of 473 items found.

  • AC Power Sources

    8500 Series - EEC

    The EEC 8500 Series is the most power dense and functionality rich power source in our history, giving you improved capability, functionality, and a reduced footprint all in one series. This series is manufactured or simulating common grid faults, voltage dips, and other power abnormalities. The 8500 Series provides an output voltage up to 310VAC and an output frequency ranging from 5 Hz – 1,200 Hz making it the obvious solution for all kinds of applications. Not to mention, an enhanced interface to all models completely designed with the end-user in mind. Our 8500 Sources can be configured as a simple AC Power Source in MANUAL mode, as an upgraded option with Standard mode or incorporating all functions with Advanced Mode. Advanced mode adds the benefits of a sweep of voltage, frequencies, transients, and DC bias over the course of a single sequence or several different tests. The 8500 Series includes the following models: 8505, 8512, 8520, 8530, 8540, & 8560.

  • 11 Function Heavy Duty True RMS Industrial MultiMeter

    Extech EX530 - Extech Instruments Corporation

    Ruggedly designed and waterproof to IP67 standards, the EX530 is ideal for use in the outdoors, on boats, and in any harsh industrial environment. It has a double molded housing and is drop-proof up to six feet with a safety rating of CAT IV 600 Volt and CAT III 1000 Volt. It measures AC/DC voltage and current, resistance, capacitance, electronic and electrical frequency, temperature, 4 to 20 mA, and duty cycle. Additional features include: 0.06% basic accuracy, continuity beeper, diode test (2.8 Volt open circuit voltage), 40000 count resolutions, backlit LCD with barograph, peak hold, min/max, relative mode, data hold and 1000 Volt input protection for all functions. Comes complete with double-molded test leads, type K bead wire temperature probe (-4 to 482 degrees F/-20 to 250 degrees C), magnetic hanging strap, case, and a 9v battery.

  • Tes Rreceiver

    KH3932 - Beijing KeHuan Century EMC Technology Co,.LTD

    The KH3932 EM1 test receiver is a fully automatic test receiver and the main tool for EM1 testing. The frequency range of the KH3932 receiver is from 9kHz to 300MHz. Equipped with a power absorption clamp, it can meet the power line disturbance power test. After the artificial power network is configured, the power terminal disturbance voltage test can be carried out. The machine has fast test speed and maneuverability. Strong, stable performance, convenient test data processing and other advantages. The KH3932 receiver uses the USB interface to exchange data with the computer, which makes the transmission speed fast and the bit error rate low. Connect to the computer for testing and use the operating environment familiar to the operator to improve work efficiency.The equipped operating software saves the data of a variety of external equipment, and supports plug and play a variety of external test equipment. The software and hardware are developed by our company. The whole machine uses a fully enclosed structure, and the chassis uses highly conductive materials with good shielding effects. Due to the use of specific technologies and processes, the problem of its own resistance is fundamentally solved. The measurement results are in the international general report format, which can be saved in the computer's hard disk or transmitted through the network, printed out directly, and saved using a USB storage device. The report is rich in content and can be printed directly according to user needs without additional editing.The measurement receiver complies with the requirements of the national standard GBT6113.101 and the international standard CISPR16-1.

  • Axial Extensometer

    Model 3542 - Jinan Testing Equipment IE Corporation

    These extensometers are designed for testing a wide range of materials, including metals, plastics, composites and ceramics. All will work in both tension and compression. The dual flexure design makes them very rugged and insensitive to vibrations, which permits higher frequency operation.They come standard with Epsilon’s quick attach kit, making it possible to mount the extensometer on the test specimen quickly and easily with one hand. The quick attach kit can be removed, allowing mounting of the extensometer with springs or rubber bands.The Model 3542 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.For gauge lengths 100 mm (4 inches) or greater see Model 3542L.

  • 3-Ch 200 MHz A/D with DDC & 2-Ch 800 MHz D/A with DUC, Kintex UltraScale - 3UVPX

    Model 54821 - Pentek, Inc.

    - Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Exceptional dynamic range/analog signal integrity- Xilinx® Kintex® UltraScale" FPGA- Compatible with several VITA standards including: VITA 66.5, VITA 67.2 and VITA 67.3C- Three 200 MHz 16-bit A/Ds- Three multiband DDCs (digital downconverters)- One DUC (digital upconverter)- Two 800 MHz 16-bit D/As- 5 GB of 2400 DDR4 SDRAM- Programmable frequency synthesizedsample clock generator- Sample clock synchronization to an external system reference- Powerful DMA controllers for moving data- PCI Express (Gen. 1, 2 & 3) interface up to x8- Multi-channel synchronization with clock/sync bus- Optional clock/sync generator for multi-board systems- Optional gigabit serial links for custom FPGA I/O- Optional LVDS port and gigabit serial links for custom FPGA I/O- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe

  • 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.

  • Climatic Chamber

    Wewon Environmental Chambers Co, Ltd.

    Climatic chamber is designed to do high temperature & high humidity, high and low temperature, or temperature cycling test, Climatic chamber mainly used for quality checking and assessing their quality reliability and life test. ● The climatic chamber simulate a full range of temperature testing and humidity testing conditions.These chambers are designed for ease-of-use, reliability and performance and include many user-friendly features standard with your purchase for the best value in the industry. ● Climatic test chambers are able to provide rapid product temperature change rates and use varying levels of relative humidity to locate design problems prior to shipping your products, improving product quality and reliability. climatic chamber For conditioning of samples prior to testing. Climatic chamber also can be used for a variety of materials of high – low temperature alternating test. The test temperature, humidity, time can be programmed. Provides conditions of temperature form -70 degree to +150 degree and of humidity from 20% to 98%. ● This type climatic chamber use 16bit Industry-grade PLC, programmable controller to control the test temperature test, and recycle time, more excellent anti jamming, high reliability of the data. ● TEMI880 large color LCD touched screen temperature & humidity controller. Real-time display program running time, the number of segment, the remaining time, repeat frequency,can display experimental data, including the pre-set segment time, heating status, calendar time, etc; climatic chamber directly digital display. ● Climatic chambers apply controllable silicon step-less adjusting technology to adjust temperature and humidity test continuously and precisely, and without over heated as the PID adjusting function. ● The thermal insulation material between outside and inside for climatic chamber is high-quality ultra-fine glass fiber insulation cotton, good thermal insulation effectivity. Thermal insulation layer composed of flame fire PU + glass wool insulation (insulation thickness 10.0 cm)

  • 40kw High Efficiency AC/DC Power Supply Charger 100-750VDC Charging Rectifier 100A Battery Charger

    SD750100G - Zhejiang Sandi Electric Co., Ltd

    40kw High Efficiency AC/DC Power Supply Charger 100-750VDC Charging Rectifier 100A Battery Charger is for DC battery system charging station. With three-phase non neutral conductor AC input, it has the advantages of high efficiency, high power density and low harmonic. 50-500Vdc output voltage range optional, suitable for all types of batteries.FeaturesProduct Introduction:SAND AC/DC Charger is specially developed for DC chargers module. It has high efficiency, high power factor, high power density, high reliability advantage. AC input 3 phase or single phase, DC output voltage range from 100 to 750VDC can be set, compliant with CE safety requirements, EMC standard EN61000-6-3 and EN61000-6-1 Class A, it is an advanced international level charger module.Unique function:● High efficiency over the full load range, full load efficiency greater than 95.5%● Wide output voltage range, 100-750VDC, suitable for a wide range of Lithium and lead acid battery● 5-inch LCD touch screen, easy to operate● Flexible application, charging voltage, charging current, charging time, timing charging can be set by LCD screen, easy to operateMain features:● Powerful protection, overheating, short circuit, overload, overvoltage, undervoltage, etc.● Three phase active power factor correction technology, reduces the harmonic interference to the grid● Dual DSP design, achieve the full digital control, less components means high reliability● Wide input voltage range, allows operation in most poor grid conditions● Soft start charging and soft shutdown minimize the impact on the battery.● Input, output have protective circuit breaker switch● Module adopts hot pluggable design, which is convenient for maintenance.● CAN/RS485 interface (Optional)SpecificationModel SD750100GAC input Input system Three phases + PEVoltage range 280Vac ~500VacRated voltage 440VacFrequency range 50Hz/60HzMaximum current <74AITHD (total harmonic distortion) <5%DC output Output power 40KWVoltage range 50-750Vdc ( can set)Constant power output voltage range 400Vdc-750VdcOutput current range (A) 100A ( 1~100A can set)Output current limit 1-100A continuously adjustableSteady voltage precision <±0.5%Steady current precision ≤±1% (rated range of 20% ~ 100% for output load)Load regulation rate ≤±0.5%Startup overshoot ≤±3%Peak-to-peak value noise ≤1% (200~1000V, 0~20MHz)Display Indication Light Green LED: normal operation,Yellow LED: alarm, Red LED: failureDisplay language EnglishDisplay 5’ LCD touch screenPower factor and THD Power factor ≥0.90 Full-load output power of @20%~50%≥0.98 Full-load output power of @50%~100%≥0.99 Full-load output power, input nominal voltage and frequency of @100%THD ≤5% Full-load output power of @50%~100%Protection function input overvoltage Protection Over Under Voltage automatic shutdown and restart when voltage return normalOutput overvoltage protection Over Under Voltage automatic shutdown and restart when voltage return normalOver-temperature protection Automatic shutdown. Automatic restart when the temperature return to normalShort circuit protection Automatic shutdown and lock, need power off to restart to unlockEfficiency Under Rated input voltage ≥95.2%

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