References
A source of comparison.
See Also: Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Acoustical References, Frequency References, Solar Reference Cells
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Product
Range-Doppler Target Generators
ATG9100
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The ATG-9100 is an example of a laboratory-quality instrument that will simulate complex target motion. Microwave signals from the speed camera enter the instrument through an integrated antenna which is then downconverted and digitized. Target simulation data is added to the digitized signal to provide range and Doppler information. The modified digital data is then converted back to an IF and upconverted to the original microwave frequency of the speed camera and radiated back through the antenna. Since the ATG-9100 can be phase-locked to an external 10 MHz reference standard, this instrument is suitable for use as a calibration standard for speed cameras.
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Product
Instrumentation Amplifiers
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Analog Devices instrumentation amplifiers (in-amps) are precision gain blocks that have a differential input and an output that may be differential or single-ended with respect to a reference terminal. These devices amplify the difference between two input signal voltages while rejecting any signals that are common to both inputs. The in-amps are widely used in many industrial, measurement, data acquisition, and medical applications where dc precision and gain accuracy must be maintained within a noisy environment, and where large common-mode signals (usually at the ac power line frequency) are present.
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Product
Single-Ended Amplifiers
Op-Amp
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For designs requiring single-ended amplifiers (op amps), Analog Devices' portfolio of high speed op amps and precision op amps provides a broad choice of products that deliver unmatched performance. Explore op amps by parameters, and find expert system-level advice on design problems with our amplifier reference designs (Circuits from the Lab®), design tools, selection guides, calculators, and SPICE models.
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Product
ExciPro Femtosecond Transient Absorption Pump-Probe Spectrometer
ExciPro
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ExciPro is the first on the market femtosecond transient absorption pump-probe spectrometer. Two linear image sensors are placed in the focal in the focal plane of an imaging spectrograph to measure probe and reference spectra originating from femtosecond white light continuum generator.
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Product
Electrometer
MAX4000
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Reference grade instrument for use in a wide range of radiation therapy applications, including external beam, low dose, high dose, intravascular brachytherapy, diagnostic x-ray, and mammographic x-ray.
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Product
Solar Reference Cell
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The Solar Reference Cells consist of a 20 mm x 20 mm monocrystalline silicon Photovoltaic Cell encased in a 92 mm x 70 mm x 16 mm metal enclosure with a protective quartz window and a temperature sensor. Designed for calibrating the irradiance of solar simulators used for testing solar cells and modules.
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Product
FPGA Signal Processor
372
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The Model 372 is designed around the Texas Instruments ADS42LB69 16-bit ADC and the Analog Devices AD9788 DAC. The 250 MHz sample clock is supplied by either the on-board frequency synthesizer or an external source. The frequency synthesizer can be phase locked to the local 10 MHz TCXO or an external reference can be used to achieve system-wide phase coherence.
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Product
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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Product
2-Ch 500 MHz A/D with DDC & 2-Ch 800 MHz D/A with DUC, Virtex-6 FPGA - 6U VPX
Model 57651
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- Complete radar and software radio interface solution- Supports Xilinx Virtex-6 LXT and SXT FPGAs- Two 500 MHz 12-bit A/Ds- Two multiband DDCs (digital downconverters)- One DUC (digital upconverter)- Two 800 MHz 16-bit D/As- One multiboard programmable beamformers- Up to 2 GB of DDR3 SDRAM; or: 32 MB of QDRII+ SRAM- PCI Express (Gen. 1 & 2) interface up to x8- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- Optional LVDS connections to the Virtex-6 FPGA for custom I/O- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
10 Volt Reference
8110A
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Measurements International Ltd.
8110A 10 volt reference, Industry Leading Stability, Built-in reversing switch for + 10 V, – 10 V, 30 Days: ± 0.25 µV/V, 90 Days: ± 0.75 µV/V, 1 Year: ± 1.5 µV/V, Built-in battery backup.
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Product
Primary Standard Capacitors
GenRad 1404 Series
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The GenRad 1404 Series standard capacitors are the standard of choice in metrology labs, and still used today by standards bodies around the world. These capacitors have been designed as primary reference standards of capacitance with which working standards can be compared.
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Product
Class 2 Sound Level Meter
SP79
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The SP79 is a Class 2 sound level meter for on-site measurements in accordance with Noise at Work legislation in industrial and office environments. Featuring A and C frequency weighting and fast and slow time weighting, the compact design can be handheld, or mounted on a tripod for longer term monitoring of Min / Max values. Detailed recording and analysis can be made using the AC and DC outputs. The SP79 complies with BS EN 61672-1:2003 and is supplied with a detachable windshield and hard carry case. The large high contrast display includes both digital reading and analogue bar graph. An optional Class 2 sound level calibrator is available to verify accuracy before and after readings in accordance with international standards. The SPC70 is simple to use and provides a 1kHz reference at 94dB and 114dB.
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Product
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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Product
4-Channel 200 MHz, 16-bit A/D with Virtex-6 FPGA - 6U VPX
Model 57660
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- Complete radar and software radio interface solution- Supports Xilinx Virtex-6 LXT and SXT FPGAs- Four 200 MHz 16-bit A/Ds- Up to 2 GB of DDR3 SDRAM; or: 32 MB of QDRII+ SRAM- PCI Express (Gen. 1 & 2) interface up to x8- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- Optional user-configurable gigabit serial interface- Optional LVDS connections to the Virtex-6 FPGA for custom I/O- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
Open Termination, 4-Terminal Pair
42090A
Terminator
The 42090A is an open termination and is primarily used for performance tests of Keysight's 4-terminal pair LCR meters and impedance analyzers. Refer to the instrument's operation/service manual for the method of using this standard.
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Product
FPGA Mezzanine Card
FMC116
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The FMC116 is a 16-channel ADC FMC daughter card which is fully compliant with the VITA 57.1-2008 standard. The FMC116 provides 16 A/D 14-bit 125Msps channels which can be sampled by an internal clock source (optionally locked to an external reference) or an externally supplied sample clock. A trigger input for customized sampling control is also available.
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Product
1 GHz A/D and D/A with Virtex-6 FPGA - 3U VPX
Model 52630
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- Complete radar and software radio interface solution- Supports Xilinx Virtex-6 LXT and SXT FPGAs- Supports gigabit serial fabrics including PCI Express, Serial RapidIO and Xilinx Aurora- One GHz 12-bit A/D- One GHz 16-bit D/A- Up to 2 GB of DDR3 SDRAM or 32 MB of QDRII+ SRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- Optional LVDS connections to the Virtex-6 FPGA for custom I/O- 3U VPX form factors provides a compact, rugged platform- Compatible with several VITA standards including: VITA-46, VITA-48 AND VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Synchronize up to twelve modules with Model 9192 System Synchronization and Distribution Amplifier- 1U Rack-mount
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Product
16-Channel 250 MHz A/D with Multiband DDC, Kintex UltraScale FPGA - 6U VPX
Model 58132
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- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Complete radar and software radio interface solution- Supports Xilinx Kintex UltraScale FPGAs- 16 250 MHz 16-bit A/Ds- 16 wideband DDCs (digital downconverters)- 128 multiband DDCs- 10 GB of DDR4 SDRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multiboard synchronization- PCI Express (Gen. 1, 2, &3) interface up to x8- Optional LVDS and gigabit serial connections to the FPGA for custom I/O- Ruggedized and conduction-cooled versions available
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Product
Reach-In Vacuum Climatic Test Chamber
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WEIBER Vacuum Climatic Test Chamber are rigid enclosures from which air and other gases are removed by a vacuum pump. This results in a low pressure environment within the chamber, commonly referred to as a vacuum. A vacuum environment allows researchers to conduct physical experiments or to test mechanical devices which must operate in outer space (for example) or for processes such as vacuum drying or vacuum coating.
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Product
Belt Alignment
Belt Hog
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The Acoem USA Belt Hog uses the pulley groove as the reference, allowing you to achieve a precise belt alignment which reduces wear, bearing failures and vibrations.
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Product
AC Reference Modules
Reference Module
NAI offers a variety of AC reference modules that provide a drive capability to 5 VA. The units are transformer-isolated and operate over a frequency range from 47 Hz to 10 kHz. These modules are specifically designed for rugged defense, commercial aerospace, and industrial applications.
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Product
Erbium Fiber Frequency Comb
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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.
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Product
2-Ch 1 GHz A/D and D/A with Virtex-7 FPGA - 6U VPX
Model 58730
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- Supports Xilinx Virtex-7 VXT FPGAs- GateXpress supports dynamic FPGA reconfiguration across PCIe- One or two 1 GHz 12-bit A/D- One or two 1 GHz 16-bit D/A- 4 or 8 GB of DDR3 SDRAM- Sample clock synchronization to an external system reference- PCI Express (Gen. 1, 2 & 3) interface up to x8- Dual-µSync clock/sync bus for multiboard synchronization- Optional user-configurable gigabit serial interface- Optional LVDS connections to the Virtex-7 FPGA for custom I/O- Ruggedized and conduction-cooled versions available- Supports GateXpress® FPGA-PCIe Configuration Manager- Synchronize up to twelve modules with Model 9192 System Synchronization and Distribution Amplifier- 1U Rack-mount
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Product
20 Bit Dual-Channel Reference Source
DRS20
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The DRS20 is a dual-channel reference source offering ultra high precision and stability and provides a +/-10 V output. The output current can be up to 10 mA and the 4 wire connection provides a 1 µV/mA load regulation. The high precision and stability is achieved by using a temperature controlled voltage reference.
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Product
PMC-Parallel-IO
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PMC-Parallel-IO provides 64 independent IO in one PMC slot. 64 mA open drain buffers on each IO. Two interrupt sources. External or internal clock reference. Custom state machine designs.
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Product
Voltage Output D/A Converters
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Analog Devices offers a large family of resistor string and R-2R voltage output (VOUT) D/A converters (DACs). From 8 bits up to 20 bits of resolution, single to 40 channels, integrated or external reference, parallel, LVDS, serial SPI or I2C interface, with high temperature operation, we have a D/A converter to suit your application. We provide precision, buffered, and unbuffered rail-to-rail VOUT D/A converters with up to ±1 LSB INL and DNL specifications and excellent offset and gain error. Our D/A converters work well in a wide variety of open-loop or closed-loop systems—adjusting gain, offset, and many other signals.
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Product
GFS Primary Gravimetric Flow Standard
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The GFS dynamic gravimetric mass flow calibration system allows users to maintain the accuracy and traceability of molblocs or other high precision devices using the same primary reference used by Fluke Calibration. GFS is a true mass flow reference suitable for use in premier measurement institutes who require the lowest measurement uncertainty.
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Product
8 Channels Thermocouple, LV A/D
TC1
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A thermocouple is a temperature-measuring device typically consisting of two dissimilar conductors that contact each other at one or more spots. It produces a voltage when the temperature of one of the spots differs from the reference temperature on other parts of the circuit. Thermocouple temperature sensors are widely used for measurement and control, and can also convert a temperature gradient into electricity.
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Product
Handheld Water Quality Meters
LAQUA PC210
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- Automatic pH calibration - up to 5 points (NIST, USA pH buffers) / up to 6 points (DIN pH buffers)- 0.01 pH resolution- Offset and average slope display- ORP calibration option- Automatic / manual temperature compensation and temperature calibration function- Automatic (up to 4 points) and manual (up to 5 points) conductivity calibration- Adjustable reference temperature and temperature coefficient- Adjustable cell constant and selectable measurement unit- Conductivity and total dissolved solids (TDS) conversion- Four (4) TDS calibration curves for wide range of applications: EN27888, Linear, 442, NaCl- Two (2) salinity calibration curves: NaCl, Seawater - Auto log data; built-in memory can store up to 500 data- Auto shut-off (programmable: up to 30 minutes)- Auto stable, auto hold, and real time measurement modes- Calibration alarm (programmable: up to 90 days)- Built-in electrode holder allows 2 electrodes to be attached - Monochrome LCD with white LED backlight: 50 x 50 mm- Casing is IP67 waterproof/dustproof, shock & scratch resistant, non-slip- Powered by 2 x AA batteries- Packaged with electrodes and calibration solutions in carrying case- 3 years meter warranty
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Product
NMR Permanent Magnet
PM1055
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A secondary field reference for NMR testing and Hall teslameters calibration.
