Frequency References
See Also: References, Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Acoustical References, Solar Reference Cells
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Frequency Response Analyzers
7400 Series
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The Venable Model 7400 Series is the top of the line in Venable performance, supplying 4 channels for increased testing, measurement and analysis functionality. Originally designed for measuring 3-phase impedance and source and load simultaneously, the Model 7400 is a robust solution for organizations requiring high availability for high volume and/or simultaneous testing.
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DDR4 Parametric Test Reference Solution
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Keysight's DDR4 parametric test reference solution helps verify the signal integrity of DDR4 memory designs according to JEDEC specifications.
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GPS Frequency Standards
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Precision Test Systems manufacturers' a full range of GPS and GNSS frequency standards that are disciplined to most of the worlds satellite systems.
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Shunt Voltage References
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Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Reference Temperature Calibrator
JOFRA™ RTC-187
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AMETEK Sensors, Test & Calibration
RTC-187 provides high-quality temperature measurement from -45 to 180°C. The 180°C is a 25° expansion over the range of the RTC-157, and it’s now the hottest temperature available for a calibrator that also supplies cold temperatures.
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Airborne Frequency Converter
AFC Series
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Behlman’s AFC-7000-1 & -2 and AFC-7003, frequency converter are designed to convert three-phase aircraft power to regulated single-phase (115 or 230 VAC) or three-phase (115/200 VAC) at 50 Hz, 60 Hz or 400 Hz. They are ruggedly built to support aircraft takeoffs and landings and designed to meet the input power requirements of MIL-STD-704 and RTCA-DO-160.
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Frequency Analyzers
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The groundbreaking multi function measuring system from RION Compact design, easy and intuitive operation Wireless connections Use it anytime anywhere!
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High Frequency Spark Tester
HF-15B
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The HF-15B is a compact, digital 3kHz spark tester with a test voltage range of 500v to 15KV rms.
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Frequency Response Analyzers
Sleuth RA-Series
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The Sleuth RA-Series is at home in any environment as well. It's 1-U high form factor, allows for compact desktop use or, it can be mounted in a rack with optional brackets. When attached to a modest user provided Windows PC (desktop or laptop), it becomes a powerful ally in your toughest design, test or trouble-shooting requirement.
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High Accuracy AC Reference Source
515
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Clarke-Hess Communications Research
The Model 515 High Accuracy AC Reference Generator fills a need for a relatively low cost and practical solution for supplying a reference excitation to typical LVDT and Synchro/Resolver transducers. The Model 515 has built-in load sensing which, in effect, yields "zero" output impedance and virtually eliminates the effects of fluctuating output loads. With up to 15 VA of output into loads with as much as 80 of phase shift, the Model 515 is ideally suited to driving inductive loads.
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Timing and Frequency Solutions
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Arbiter Systems®, Inc. delivers world class GPS based precision timing and frequency solutions for a variety of evolving markets. Engineered and manufactured in the USA, Arbiter precision time clocks and supporting products surpass industry standards in terms of accuracy, flexibility, reliability, connectivity and value, and are as at home in the substation as they are in the laboratory.
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Digital frequency counters
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The instrument is equipped, in addition to the 20 Hz-160 MHz input, a second input for measurement up to 2.4 GHz with an impedance of 50 Ohms.
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High Frequency Current Transformers
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Osborne High Frequency Current Transformers operate at frequencies higher than 50/60 Hertz. Their purpose is to reduce high frequency system currents to lower values that are appropriate for instrumentation and/or protection circuits. They have been designed to meet specified current ratios, and burden impedance at a specified transformation error. One area of unique Osborne expertise is in designing for phase shift when high frequency current transformers are to be used for power measuring applications.
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802.11ad Testbed, Reference Solution
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Generate and analyze 802.11ad fully coded PHY waveforms for complete component, subsystem, and system performance at baseband, IF, and millimeter-wave. This Reference Solution combines Keysight Technologies software and hardware to provide a flexible testbed for 802.11ad waveform generation and analysis. Software provides the flexibility to generate and analyze 802.11ad waveforms with a wide range of different attributes. Hardware provides the flexibility to support baseband, IF, and millimeter-wave test planes. Create waveform sequences with unique 802.11ad packet structures including Modulation Coding Scheme (MCS), packet length, payload data type, and interpacket gap length, etc.
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Low Frequency Generator
LFG-2500
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• tracing – finding the route and burial depth of the underground utilities;• fault location – pinpointing phase-to-sheath and interphase short-circuit faults;• cable identification – identifying a correct cable in a bunch.
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Frequency Multipliers
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A series of broadband frequency multipliers is available with output frequencies between 18 and 110 GHz. The use of GaAs diodes on a suspended substrate circuit allows an extremely compact device. Circuit symmetry is used to enhance either even or odd harmonics while suppressing unwanted odd or even harmonics. These devices can be used as higher order even or odd harmonic multipliers with reduced efficiency. All of these multipliers have maximum input power +23 dBm for temperature less than +50°C.
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Universal Frequency Counters
GT210PXI-2
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GuideTech’s GT210PXI-2 3U form factor, meets industrial standard chassis with an expandable platform, achieving optimal test system with optimal cost. The ability to precisely resolve frequency and time yields both increased accuracy as well as reduced measurement time.
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HF Frequency Counter LXI, GPIB/IEEE48
53210A
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For fast and accurate frequency and time-interval measurements, you need reliable devices in research and development. The Keysight 53210A HF frequency counter meets the requirements with its high accuracy, bandwidth and speed. Depending on the application and budget, choose one of the three available models. The connection to the PC is via USB, Ethernet/LXI or via GPIB.
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SR Series AC Reference Supplies
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Computer Conversions Corporation
The SR Series are miniature, low cost AC reference generators designed to supply 26 or 115 Volt excitation to Synchros or resolvers in military and industrial control applications. They accept +/- 15V DC and provide up to 5VA of transformer isolated output power. These converters are packaged in PC card mounting modules 2.6" x 3.1" x 1"H.
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Standard 3.74 (106.00) - 14.35 (407.00) High Frequency Probe
K-50B-QG-75R
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Nominal Impedance (Ohms): 50Bandwidth @ -1dB (GHz): 12.00Return Loss @ -20dB (GHz): 3.00Test Center (mil): 550Test Center (mm): 13.97Full Travel (mil): 100Full Travel (mm): 2.54Recommended Travel (mil): 67Recommended Travel (mm): 1.70Overall Length (mil): 1,637Overall Length (mm): 41.58
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5 Digit Frequency Meter
CS1-F
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CS1-F economic type Frequency Meter is designed with high accuracy measurement, display and communication of Frequency.The innovation feature is auto-range input from 0.01Hz~100KHz(option ~140KHz) and the display resolution will auto-change to show the highest according to input frequency.They are also available 1 option of 1 Relay outputs, 1 Analogue output or 1 RS485(Modbus RTU Mode) interface with versatile functions such as control, alarm, re-transmission or communication for a wide range of panels and testing applications.
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Precision Frequency Comparator
VCH-314
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Frequency comparator VCH-314 controlled by Personal Computer is a system for precise phase and freqyency instability measuring. It contains two identical measuring channels (three input signals). Using cross-correlation technique allows to obtain super-low measurement error and to calculate frequency instability of each single signal separately.
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Rubidium Frequency Standard
RFS VXI
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*RFS VXI is designed to work as part of information measuring systems based on the VXI bus as a rubidium frequency standard.*RFS VXI is intended for use as a highly stable laboratory signal source for checking generator devices, time-frequency measuring equipment and other equipment, synchronizing navigation systems.*The RFS VXI contains two independent rubidium reference oscillators: main and standby.*RFS VXI is a VXI standard, register based device and measures C-1.*RFS VXI implements the "Self-control" mode, which checks the output frequencies of the rubidium standard.
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Ferroalloy Reference Materials
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NCS Testing Technology Co., Ltd.
Ferroalloy Standards by NCS
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Rubidium/GPS Frequency Standard
PXIe-3352
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The Astronics Test Systems PXIe-3352 frequency standard module sets a new standard for high density functionality in a PXI module by combining a Rubidium oscillator with a GPS receiver into a single, compact instrument.
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Sound Power Reference Source
Qref
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Precision omni-directionallity in all directions, horizontal and verticalplane. This source has a frequency range of application between 100 and8000 Hz (third octave bands) Despite only weighing 1.4 kg and having a diameter of 105 mm, it produces a maximum sound power level of Lw 104 dB.
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Audio Frequency Generator
TM530
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TM530 Audio Frequency Generator is provided with Pinpoint Fault Locator for pinpointing the low resistance fault and detecting cable route. When detecting, TM530 will inject a signal current of 1kHz audio frequency into the cable, and accordingly a magnetic wave of the corresponding frequency will be generated on the cable. Pinpoint Fault Locator will collect this magnetic signal, thus obtains the information of the cable fault and the route.
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Frequency Multipliers
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Analog Devices active and passive frequency multipliers enable designers to economically multiply lower frequencies to higher frequencies without creating measurable additive phase noise. This broad portfolio features a range of devices that can meet the size, volume, and cost needs for multiple applications, including:
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Precision Chilled Mirror Reference Hygrometers
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Chilled mirror dew-point hygrometers provide highly accurate and stable measurements of trace moisture and humidity. The precision chilled-mirror reference hygrometers are sensitive to changes in very low moisture concentrations (less than 5 ppbV).
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Frequency Multipliers
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The Kuhne electronic Frequency Multipliers can be characterized by a high band width, a very good suppression of fundamental and harmonic waves, a small current consumption and a very compact housing.





























