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Frequency Standards

Devices that produce a known frequency.

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


Showing results: 466 - 480 of 482 items found.

  • High Performance Programmable AC Power Supply

    IT7600 Series - I-TECH Electronic Co., Ltd

    IT7600series high performance programmable AC power supplies, adopt advanced digital signal processing technology, with frequency up to 10-5000 Hz, built-inall-round power meter and large-screen oscilloscope function. Power up to 54kVA and support master-slave parallel, which can provide high-capacitysingle-phase or three-phase AC output. Some single-phase or three-phase products can be easily upgraded toAC600V (three-phase star connection downline voltage up to 1000V) output. IT7600 has built-in arbitrary waveform generator to simulate the harmonic and avariety of arbitrary waveforms output; also has strong exchange measurement and analysis functions. IT7600 can be widely used in many areas, such as newenergy, home appliances, power electronics, avionics, military, the development and application of IEC standard test and so on.

  • Multifunctional Meter

    CPM-10 - Chuan Sheng Electronics Co., Ltd.

    CPM-10 Multifunction Power meter measure single phase 2 wire ,single phase 3 wire, three phase 3 Wire and 3 Phase 4 wire systems with high accuracy measurement for parameters such as voltage, current ,active power, reactive power, apparent power, power factor ,frequency, effective energy (V,A,W,Watt-Hr,Var,Var-Hr,VA,PF,Hz), having LED display and standard communication RTU Modbus RS485..Optional functions 1 set relay output,1 analogue,1 RS485 (ModbusRTU Mode) or 1 pulse output. Most suitable for power management,remote input /output, alarm and remote signal control uses needs.Case depth 120mm only, easy panel mounting installation

  • Qualification and Quality Control Tests

    Techsquare - Techimp HQ S.r.L

    New IEC standards, IEC 60034-18-41 and IEC 60034-18-42, have been issued to define the procedures for testing partial discharge inception voltage and the long-term performance (endurance) of Type I and Type II insulation systems used in rotating machines fed from voltage converters. Voltage impulse generators are required at least to test turn insulation, but they would be recommended for any testing under power electronics supply because of their capability to simulate the real electrical stress conditions. More generally, any type of electrical insulation system when subject to impulsive voltage waveform during life should be carefully evaluated in terms of partial discharge and endurance behaviour. This is why voltage impulse generators able to provide impulses with controlled amplitude and frequency are needed to face this new testing challenge.

  • PXIe-5831, 44 GHz, 1 GHz Bandwidth PXI Vector Signal Transceiver

    786853-01 - NI

    44 GHz, 1 GHz Bandwidth PXI Vector Signal Transceiver - The PXIe-5831 supports validation and production test into mmWave frequency bands. The PXIe-5831 incorporates a vector signal generator, vector signal analyzer, and high-speed serial interface with FPGA-based real-time signal processing and control. The PXIe‑5831 combines fast measurement speed and the small form factor of a production test box with the flexibility and high performance of R&D-grade box instruments, making it an ideal solution in both the lab and the production floor. The PXIe-5831 meets the stringent challenges of 5G New Radio, but it is also able to test a variety of cellular and wireless standards such as Wi-Fi 6. In addition, you can easily expand a test system in the PXI Express form factor to support multiple input, multiple output (MIMO) configurations with phase-coherent synchronization.

  • PXIe-5831, 44 GHz, 1 GHz Bandwidth PXI Vector Signal Transceiver

    786856-01 - NI

    44 GHz, 1 GHz Bandwidth PXI Vector Signal Transceiver - The PXIe-5831 supports validation and production test into mmWave frequency bands. The PXIe-5831 incorporates a vector signal generator, vector signal analyzer, and high-speed serial interface with FPGA-based real-time signal processing and control. The PXIe‑5831 combines fast measurement speed and the small form factor of a production test box with the flexibility and high performance of R&D-grade box instruments, making it an ideal solution in both the lab and the production floor. The PXIe-5831 meets the stringent challenges of 5G New Radio, but it is also able to test a variety of cellular and wireless standards such as Wi-Fi 6. In addition, you can easily expand a test system in the PXI Express form factor to support multiple input, multiple output (MIMO) configurations with phase-coherent synchronization.

  • Dielectric Breakdown Voltage and Dielectric Strength

    ASTM D149 - National Technical Systems

    This test method covers procedures for the determination of dielectric strength of solid insulating materials at commercial power frequencies, under specified conditions. Unless otherwise specified, the tests shall be made at 60 Hz. However, this test method is suitable for use at any frequency from 25 to 800 Hz. At frequencies above 800 Hz, dielectric heating is a potential problem. This test method is intended to be used in conjunction with any ASTM standard or other document that refers to this test method. References to this document need to specify the particular options to be used. It is suitable for use at various temperatures, and in any suitable gaseous or liquid surrounding medium. This test method is not intended for measuring the dielectric strength of materials that are fluid under the conditions of test. This test method is not intended for use in determining intrinsic dielectric strength, direct-voltage dielectric strength, or thermal failure under electrical stress (see Test Method ASTM D3151). This test method is most commonly used to determine the dielectric breakdown voltage through the thickness of a test specimen (puncture). It is also suitable for use to determine dielectric breakdown voltage along the interface between a solid specimen and a gaseous or liquid surrounding medium (flashover). This test method is similar to IEC Publication 243-1. All procedures in this method are included in IEC 243-1. Differences between this method and IEC 243-1 are largely editorial. Note: The above information is taken directly from the test method Scope published in ASTM D149.

  • Dual Channel Digital Receiver

    MS 1740 - Meltronics Systemtech

    Dual Channel Digital Receiver is a complete high−frequency dual−channel A/D converter capable of sampling rates up to 210 MHz. It accepts two front panel analog inputs and delivers digital output samples over four FPDP (Front Panel Data Port) connectors utilizing FPDP standards. The Dual Channel Digital Receiver features two 12−bit Analog Devices AD9430 A/D Converters, and two user−configurable Xilinx® Virtex−IV Series FPGAs. It also features a VME A64/D64 slave interface for setting up operating modes and selectable A/D range, and optionally provides 32−bit access from the VMEbus to the FPGAs. It is an ideal system as a high−speed data acquisition front end for real time recording and digital signal processing systems.

  • Fast and Flexible WLAN Measurements up to 802.11ax

    WLAN Test Toolkit - NI

    The WLAN Test Toolkit gives you direct and fine control over the generation and analysis of IEEE 802.11a/b/g/n/ac and ax signals, as well as 802.11j/p/ah/af waveforms, with industry-leading speed and accuracy. It empowers you to characterize, validate, and test a variety of WLAN connectivity products, such as RF front end components, wireless modules, and user devices.The toolkit includes extensive support for the latest features of the 802.11ax standard, including extended single-user packets, multiuser OFDMA, and multiuser multiple input, multiple output (MIMO) functionality with per-user configuration and measurement results. The WLAN Test Toolkit helps you solve demanding new access point test cases by generating signals that simulate multiuser environments, including per-user impairments. You can also use the new software to generate trigger frames to test the real-time response of client devices and make power precorrection and relative center frequency measurements.

  • 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.

  • Sound Level Calibrator

    TM 100 - Kusam Electrical Industries Limited

    • Standard : Confirms to IEC 942 Class 1.• Output Sound Level : 94dB and 114dB under reference.• Accuracy : ±0.3dB (20°C, 760 mm Hg)• Frequency of 1000 ± 0.1% Hz allows calibration with A / B / C or D weighting networks or linear.• Low Battery Indicator (LED).- Operating Temperature range : -10 ~ +50 C- Storage Temperature range : -40 ~ +65 C (with batteries removed).- Temperature Coefficient : 0 ~ 0.01 dB / C• Calibration of “1 and ½” ceramic microphones.• Altitude Effects : Approx. 0.1 dB decrease for each 2000 feet increase in altitude fromsea level to 12,000 feet elevation, or comparable atmospheric pressure change(approx. every 50 mm of Hg decrease).• Battery : Single 9V transistor Battery. (NEDA 1604)• Battery Life : Approx 100 hours.• Dimension : 48 x 48 x 138mm

  • 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.

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