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Frequency Standards

Devices that produce a known frequency.

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


Showing results: 226 - 240 of 474 items found.

  • Microwave Testing

    325B - Picoprobe

    The Model 325B Picoprobe sets new® standards in microwave probing performance. Benefiting from coaxial techniques, which have inherent low loss and low dispersion characteristics, the Model 325B Picoprobe achieves an insertion loss of less than 3.0 db and a return loss of greater than 15 db over its frequency range (see accompanying data).

  • Microwave Testing

    120 - Picoprobe

    The MODEL 120 PICOPROBE® sets new standards in microwave probing performance. Benefiting from coaxial techniques, which have inherent low loss and low dispersion characteristics, the Model 120 Picoprobe®, achieves an insertion loss of less than 1.75 db (typical) and a return loss of greater than 15 db (max.) over its frequency range.

  • Microwave Testing

    500B - Picoprobe

    The Model 500B Picoprobe sets new® standards in microwave probing performance. Benefiting from coaxial techniques, which have inherent low loss and low dispersion characteristics, the Model 500B Picoprobe achieves an insertion loss of less than 4.0 db and a return loss of greater than 15 db over its frequency range (see accompanying data).

  • LED synchroscope

    LS-110 SYNC (110V, 120V, 220V, 230V, 240V) - Standard Electric Works Co., Ltd

    • Input Voltage :   110V AC, 120V AC, 220V AC,  230V AC or 240V AC.• Standard 4.5-inch switchboard case.• Front panel mount.• 3 bi-colored LED indicators for "SYNC",   "GEN" and "BUS".• 24 LEDs in a circle display the phase angle and the frequency differences between 2 networks.• 360° LED indication.• 12 o'clock position LED is bi-colored.

  • Amplitude Detectors with Isolators

    ERAVANT

    Full band waveguide detectors are GaAs beam lead Schottky diode-based detectors that are specially designed for millimeterwave network analyzer applications. With a proprietary circuitry design and careful diode selection, these zero-biased detectors exhibit high sensitivity and extremely flat output characteristics. The below standard offering covers the frequency range of 18 to 170 GHz and offers a 1 MHz video bandwidth and 1 MΩ video output impedance. The standard models also have the capacity to handle a maximum RF input power of up to +17 dBm. The RF interface of these detectors is a standard waveguide with an integrated Faraday isolator to improve the port VSWR. The output voltage polarity is negative and the connector type is a female SMA. Other configurations are offered as custom models.

  • Millimeter Wave Amplifiers

    Ducommun Inc

    Ducommun offers Low Noise (ALN), High Power (AHP), Full Waveguide Band (AFB) and General Purpose (AGP) amplifiers to cover the frequency range from 18 to 96 GHz. These amplifiers utilize thin-film and microelectronics manufacturing techniques and are discrete and/or MMIC PHEMT devices based. These amplifiers feature low noise, high output power, single DC power supply and wide operation temperature range. The amplifiers are offered in two categories, standard and custom-built. Both standard and custom-built amplifiers are equipped with various RF interface, including standard waveguide or coaxial connector for convenient system integration. The optional input and output integrated isolators are available as an option to further improve the port return loss.

  • Decade Box, Calibrated W/Data, Capacitance, 5, 100pF to 11111µF, 5 %

    72-7265 CAL D - Tenma

    The 72-7265 CAL D from Tenma is a capacitance decade box. It is ideal for service, prototype and experimental use. This useful tool may be set at any non polarized capacitor value from 100pF to 11,111µF in 100pF increments. The decade accuracy is ±5% capacitors used throughout at <1μF, 1KHz test frequency, ≥1μF, 100Hz test frequency. It has weight of 304g/0.69lb and dimension is 14.7cm × 11.7cm × 5.5cm (5.79" × 4.61" × 2.16"). It is typically used in general applications, troubleshooting, maintenance, education and vocational training, production line testing, radio and TV services, working standards, research design & develop, physics laboratory work.

  • Decade Box, Calibrated, Capacitance, 5, 100pF to 11111µF, 5 %

    72-7265 CAL - Tenma

    The 72-7265 CAL from Tenma is a capacitance decade box. It is ideal for service, prototype and experimental use. This useful tool may be set at any non polarized capacitor value from 100pF to 11,111µF in 100pF increments. The decade accuracy is ±5% capacitors used throughout at <1μF, 1KHz test frequency, ≥1μF, 100Hz test frequency. It has weight of 304g/0.69lb and dimension is 14.7cm × 11.7cm × 5.5cm (5.79" × 4.61" × 2.16"). It is typically used in general applications, troubleshooting, maintenance, education and vocational training, production line testing, radio and TV services, working standards, research design & develop, physics laboratory work.

  • Decade Box, Calibrated W/D & U, Capacitance, 5, 100pF to 11111µF, 5 %

    72-7265 CAL DU - Tenma

    The 72-7265 CAL DU from Tenma is a capacitance decade box. It is ideal for service, prototype and experimental use. This useful tool may be set at any non polarized capacitor value from 100pF to 11,111µF in 100pF increments. The decade accuracy is ±5% capacitors used throughout at <1μF, 1KHz test frequency, ≥1μF, 100Hz test frequency. It has weight of 304g/0.69lb and dimension is 14.7cm × 11.7cm × 5.5cm (5.79" × 4.61" × 2.16"). It is typically used in general applications, troubleshooting, maintenance, education and vocational training, production line testing, radio and TV services, working standards, research design & develop, physics laboratory work.

  • Full Band Down-Converters

    STC-20-10-S1 - ERAVANT

    Full band down-converters are designed to convert high frequency millimeterwave signals down to the baseband at 10 MHz to 1.6 GHz. These down-converters deliver a superior performance since they are assembled with SAGE Millimeter’s instrumentation grade components, such as multipliers, amplifiers, filters, isolators, and more. The below standard offering covers the frequency range of 26.5 to 170 GHz and delivers a typical LO power of 3 dBm and conversion gain of 20 dB. The down-converters provide low harmonic levels and excellent gain flatness, making them ideal for test instrumentation applications. Specifications other than those listed below are available upon request.

  • VDI Millimeter-Wave Frequency Extension Modules for PXA, MXA, EXA Signal Analyzers

    Keysight Technologies

    These modules offer low conversion loss and excellent noise figure. Standard features include dual operating modes. First, the module can function as a high performance down-converting mixer. The second operating mode functions as a block down-converter with a broadband IF up to 20 GHz. Power to the module is provided via an included external DC power supply. These frequency extenders minimize conversion loss by multiplying and amplifying the LO signal internally, thus taking advantage of the benefits of low harmonic mixing. This architecture also preserves the X-Series precision frequency resolution and low phase noise, extending those qualities into the millimeter and sub-millimeter bands.

  • Comb Generator, 10 MHz To 110 GHz

    U9391M - Keysight Technologies

    U9391M comb generators were developed to provide precision phase calibration, for non-linear measurements using the PNA-X nonlinear vector network analyser (NVNA), referenced to the National Institute of Standards and Technology (NIST) standard. Additionally, the comb generators can be used to calibrate PNA and PNA-X network analyzers for phase and delay measurements of frequency converters without requiring reference or calibration mixers.

  • Filters & Switch Filter Banks

    Quantic PMI

    PMI offers the highest quality filters, switch filter banks, filter assemblies, diplexers, multiplexers for industrial and military applications in the frequency range of DC to 40 GHz.  All PMI’s Switch Filter Banks use PMI’s proprietary Solid-state Switch designs, which offer high speed and improved performance.  While there are many standard models, PMI can design and build to meet your specifications.

  • Switch Filter Banks

    Quantic PMI

    PMI designs, manufactures, and produces high quality state-of-art-art switch filter banks that feature 2 to 32 multichannel configurations, frequency coverage up to 26 GHz, low profile packaging, connector options, and high channel to channel isolation. Select from standard designs or custom Switch Filter Banks can be designed to meet your most demanding electrical, mechanical, and environmental specifications.

  • Process RF Analyzer

    IMPS-4400 - Sensortech Systems, Inc.

    The Sensortech Instant Moisture Profiling System (IMPS-4400) is a non-contact RF moisture profiling system for board manufacturers to improve and optimize production processes and meet quality standards, reduce energy costs, increase productivity, and generate revenue. The IMPS-4400 utilizes radio frequency antennas to analyze board moisture characteristics below the surface, which is critical information to ensure consistent quality of finished boards.

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