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
Pressure Comparator (System E)
P014
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AMETEK Sensors, Test & Calibration
The P014 hydraulic jack pump (System E) is an extremely effective pressure pump designed for easy, controlled, high pressure generation. Each comparator includes a 4 connection manifold, which can be used for the reference indicator, the device under test, a fine adjust, an isolation valve, or a fluid reservoir. The adjustable reference pressure port lets you set your reference gauge at the best viewing angle.
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Product
4210A Rubidium Frequency Standard
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Precise Time and Frequency, Inc.
The ptf 4210A Rubidium Frequency Standard is a unique solution for providing a highly stable, low phase noise, frequency reference for applications requiring atomic reference stability performance.The instrument contains a high performance rubidium module, with an extended life design, and very low aging rate, with high quality OCXO o/p for low phase noise.
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Product
Optical Transimpedance Amplifiers
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Analog Devices optical transimpedance amplifiers offer a complete, high performance, single chip solution for converting photodiode current into a differential voltage input. Supporting data rates from 155 Mbps to 11.1 Gbps, our transimpedance amplifiers are ideally suited for data communications and telecommunications applications supporting lay protocols including 1×, 2×, 4×, and 8× Fibre Channel, 10GBASE-LX4, SONET/SDH up to OC-192 with FEC, and 10 Gigabit Ethernet. Our transimpedance amplifiers feature low input referred noise current, high input current, and low power dissipation.
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Product
JadeFX FlexorSet 8-Channel 250 MHz A/D with DDCs - 3U VPX
Model 5983-317
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- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- VITA-57.4 HSFC FMC+ site offers access to a wide range of possible I/O- Supports Xilinx Kintex UltraScale FPGAs- Eight 250 MHz 16-bit A/Ds- Eight multiband DDCs- 4 GB and 5 GB of DDR3 SDRAM- Sample clock synchronization to an external system reference- PCI Express (Gen. 1, 2 and 3) interface up to x8- User-configurable gigabit serial interface- Optional optical interface for backplane gigabit serial interboard communication- LVDS connections to the Kintex UltraScale FPGA for custom I/O and synchronization- Compatible with several VITA standards including: VITA-46, VITA-48 AND VITA-66.4 and VITA-65 (OpenVPX™ System Specification)- Ruggedized and conduction-cooled versions available- Please refer to the product datasheet for Installed FPGA IP Module details
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Product
60 GHz WR-15 Waveguide Tx Module
PEM010
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The PEM010 is a highly integrated millimeter wave transmitter that covers the 60 GHz global unlicensed spectrum allocations packaged in a standard waveguide module. Transmitter architecture is a double conversion, sliding IF with wide bandwidth capability through the up-conversion chain from baseband to carrier. The I/Q interface accepts analog baseband signals which provides for flexibility in design and applications. The baseband input optionally supports FSK/MSK modulation for non-coherent applications. The transmitter incorporates a complete waveguide interface with low-loss transition between the chip and the WR15 waveguide port. The integrated package is small and lightweight, with a simple to use multi-pin ST4 connector for power, reference clock, digital control port and baseband signals. Either of two reference clocks can be used for setting 540 MHz or 500 MHz channel spacing.
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Product
Optical Chopper
SR540
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Stanford Research Systems, Inc.
The SR540 chopper will handle all your optical chopping requirements?from simple measurements to dual-beam and intermodulation experiments. The SR540 has a 4-digit frequency display, front-panel frequency control, analog voltage frequency control and two reference outputs with selectable operating modes.
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Product
Lake Variable Area Flow Meters
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Lake Variable Area flow meters, often referred to as rotameters, measure flow rate of a liquid or gas by relating linear displacement of an internal “float” or sharp-edged orifice plate (Lake) to a corresponding flow rate. As flow rate increases, the orifice area that the flow moves through also increases – thus, the term “Variable Area.” Variable Area meters either allow flow through a peripheral orifice formed between a tapered wall and a float as in the traditional rotameter, or an annular orifice and an internal tapered metering pin in the Lake Monitor.
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Product
2-Channel 200 MHz A/D with 766 DDCs, Kintex UltraScale FPGA - 3U VPX
Model 52865
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- Jade Xilinx Kintex UltraScale FPGA Products and Navigator Design Suite Software Video- Jade Xilinx Kintex UltraScale FPGA Family Brochure- Complete software radio receiver solution for extremely high-channel-count applications- Uses Xilinx Kintex UltraScale KU035 FPGAs- Two 200 MHz 16-bit A/Ds- Four wideband DDCs (digital downconverters)- Up to 762 narrowband DDCs- Sample clock generation and synchronization to an external system reference- PCI Express (Gen. 1, 2 & 3) interface up to x4- 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 eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
Automated Comparator
RM-111
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The Radian Research RM-111 Automated Comparator is the definitive test accessory for use with RADIAN reference standards. The RM-111 eliminates manual calculation and recordkeeping associated with two primary applications: field testing of watthour billing meters and laboratory testing of reference standards.
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Product
RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 4m
183283-04
Serial Cable
9-Pin Female DB-9 to 9-Pin Female DB-9 Serial Cable - The 9F-9F Serial Cable, sometimes referred to as GPIB Serial Cable, connects and controls GPIB devices using RS232 and RS485 serial ports. The 9F-9F Serial Cable is offered in different lengths.
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Product
NI-6581, 100 MHz, 54 Single-Ended-Channel Digital I/O Adapter Module
780565-01
Digital I/O Adapter
100 MHz, 54 Single-Ended-Channel Digital I/O Adapter Module for FlexRIO—The NI-6581 is a digital I/O adapter module that, when combined with a PXI FPGA Module for FlexRIO, creates a digital instrument for interfacing with 54 single-ended digital pins. You can use the NI-6581 to do real-time interfacing of standard protocols and implement customized protocols. The NI-6581 can operate sample digital waveforms at up to 100 MHz. It includes support for common transistor-to-transistor logic (TTL) voltage levels, or other voltage references can be sourced externally using a front panel connector.
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Product
Digital to LVDT RVDT Converters
ST-DLVT
ITA
Computer Conversions Corporation
ST-DLVT series - Complete Digital to LVDT RVDT Converters On PCB with Mounting Track having Screw-Terminal Block for ease of wiring. 2 or 3-4 wire output configurations, Isolated Reference & Signals, 3V and 5V logic Compatible
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Product
Industrial CT Scanning Services
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Computed tomography (CT) is also referred to as industrial x ray and industrial imaging. It is an x-ray methodology yielding 3-dimensional (3D) results by placing an object on a rotational stage between an x-ray tube and x ray detector, rotating the object 360 degrees and capturing images at specific intervals—such as every degree or every half degree.
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Product
Climatic Test Chambers
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Dongguan Amade Instruments Technology Co., Ltd
Climatic test chambers are also referred as environmental test chambers, which is the general name of various test chambers that simulate the natural climate environment of raining, high temperature, low temperature, constant temperature, illumination, dewing etc, products including constant temperature chamber, constant humidity chamber, ozone aging test chamber, UV accelerated weathering tester, vacuum hot air oven, salt spray chamber, steam aging tester, rain test chamber, dust proof test chamber, ventilation aging chamber, xenon lamp weathering test chamber and so on.
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Product
2-Ch 500 MHz A/D with DDC & 2-Ch 800 MHz D/A with DUC, Kintex UltraScale - 6UVPX
Model 57851
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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- Supports VITA-49.2 VITA Radio Transport standard- Two 500 MHz 12-bit A/Ds- Two multiband DDCs (digital downconverters)- One DUC (digital upconverter)- Two 800 MHz 16-bit D/As- 5 GB of DDR4 SDRAM- Sample clock synchronization to an external system reference- LVPECL clock/sync bus for multimodule synchronization- PCI Express (Gen. 1, 2 & 3) interface up to x8- Optional LVDS and gigabit serial connections to the FPGA for custom I/O- Compatible with several VITA standards including: VITA-46, VITA-48 and VITA-65 (OpenVPX™ System Specification)- Optional 400 MHz 14-bit A/Ds- 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
Log-Periodic Antenna
KH30937F
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Beijing KeHuan Century EMC Technology Co,.LTD
KH30937F log-periodic antenna (hereinafter referred to as KH30937F ) is a linearly polarized broadband receiving antenna with a working frequency of 30MHz~1GHz . KH30937F has excellent standing wave ratio characteristics, accurate feeding position, and the best phase relationship between each period on the base. The antenna gain is basically constant, thus ensuring that the antenna factor changes linearly and smoothly with the frequency, which is helpful for accurate difference calculation between each frequency point.
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Product
Legendary Calibration Oscillator
LCO Series 3.5” x 2.5” x 0.6”
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*Connectorized Package *Low Output Power Variation (±0.05 dB)*Output Power to +10 dBm Available *Optional Internal Reference
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Product
PXIe-S5090, 9 GHz PXI Vector Network Analyzer
787251-01
Vector Network Analyzer
PXIe, 9 GHz PXI Vector Network Analyzer - The PXIe-S5090 is a 2-port Vector Network Analyzer (VNA) that helps you measure amplitude, phase, and impedance. You also can use the PXIe-S5090 to perform time-domain analysis and to calculate the S-parameters of 2-port RF devices. It features a 300 kHz to 9 GHz frequency range, a wide dynamic range, and high sweep speeds for automated design validation and production test. Additionally, the PXIe-S5090 supports automatic precision calibration, full vector analysis, and reference plane extensions.
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Product
Precision Resistor Network
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Analog Devices provides a portfolio of quad resistor networks with excellent matching specifications over the entire temperature range. All of our resistors can be accessed and biased independently, making them a convenient and versatile choice for any application that can benefit from matched resistors. Our resistor networks provide the precise ratiometric stability required in highly accurate difference amplifiers, voltage references, and bridge circuits.
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Product
1.533 Μm Frequency-Locked Laser
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Thorlabs' LLD1530 Frequency-Locked Laser is a narrow linewidth, DFB-laser-diode-based, turnkey system with a vacuum emission wavelength of 1532.8323 nm and a high SMSR of at least 35 dB. The laser frequency is actively stabilized to a National Institute of Standards and Technology (NIST)-traceable molecular transition of acetylene and has an absolute accuracy at start-up that is better than ±25 MHz. The emission frequency immediately after start-up is then maintained with a ±25 MHz stability, providing an overall frequency accuracy of ±50 MHz. The LLD1530 is an accurate frequency reference designed to provide low-noise laser emission with excellent frequency stability, accuracy, and precision immediately at start-up. This source is ideal for use in demanding FTIR instrumentation, instrument calibration, gas sensing, and coherent telecommunications applications.
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Product
Cable Assembly, 200-Pin LFH, Male Bottom Exit (Male Screwlocks) to 4x50-Pin D-type, Female, 1m
A200LMB-04F050D5B100
Cable Assembly
This 200-pin male to 50-pin female D-type 1m long cable assembly is suited for direct connection to all Pickering Interfaces products using the 200-Pin LFH connector and is constructed from 4 bundles of 50-wire round/flat ribbon cable. The connector assembly can be secured to the product by screwlocks. This cable assembly can be used with Pickering 50-Pin D-Type connector blocks (refer to 90-005D).
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Product
IR Calibration Instruments
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Bodkin Design & Engineering, llc
We offer a line of comprehensive solutions to address all of your thermal calibration needs. From bench-top differential sources with .01° C resolution for experiment calibration to built-in OEM devices for on-the-fly thermal reference, Bodkin Design and Engineering and IRBlackbody have the right blackbody for you.
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Product
SH68F-68F-EPM, 68-Pin Female to 68-Pin Female, Twisted Pair, Shielded Multifunction Cable
199006-0R5
Multifunction Cable
68-Pin Female to 68-Pin Female, Twisted Pair, Shielded Multifunction Cable - The SH68F-68F-EPM Cable, sometimes referred to as SH68-68-EPM, connects NI DAQ 68-pin devices to 68-pin accessories. The SH68F-68F-EPM Cable has D-type connectors and is offered in different lengths.
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Product
SH68M-68M-EPM, Male 68 pin SCSI to 68 pin VHDCI, 0.3m
192288-0R3
Multifunction Cable
68-Pin Male VHDCI to 68-Pin Male VHDCI, Twisted Pair, Shielded Multifunction Cable - The SH68M-68M-EPM Cable, sometimes referred to as SHC68-C68-EPM, connects DAQ devices. The cable includes separate digital and analog sections, individually shielded twisted pairs for analog inputs, individually shielded analog outputs, and twisted pairs for critical digital I/O. The SH68M-68M-EPM Cable is offered in different lengths.
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Product
4-Channel 200 MHz A/D with DDC, Virtex-6 FPGA - XMC
Model 71661
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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- Four multiband DDCs- Multiboard programmable beamformer- 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 multimodule synchronization- PCI Express (Gen. 1 & 2) interface up to x8 wide- Optional LVDS connections to the Virtex-6 FPGA for custom I/O- RoHS Compliant Lead-Free Version Available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
FMC-HPC ADC Board
FMC123
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Sundance Multiprocessor Technology Ltd.
The FMC123 provides four 16-bit A/D channels up to 1Gsps. The design is based on Texas Instruments’ ADS54J60 Analog-to-Digital converter. The sample clock can be supplied externally through a coaxial connection or supplied by an internal clock source (optionally locked to an external reference) for multi-channel synchronization. An external trigger input is available for timing synchronization. The FMC123 is mechanically and electrically compliant to the FMC standard (ANSI/VITA 57.1).
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Product
PXIe Frequency Reference: 10 MHz And 100 MHz
M9300A
Signal Generator
The M9300A PXIe frequency reference is a PXIe-compatible, compact, modular instrument that can be used with the Keysight M9301A synthesizer, M9310A source output, and M9311A modulator to create the world’s fastest vector signal generator, the M9381A. Create a CW source, the M9380A, by combining the M9300A with the M9301A and M9310A or use it as the 10-MHz or 100-MHz reference with other PXI solutions. Control the instrument through a soft front panel and programmatic interfaces tuned to your application development environment of choice.
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Product
GPS/GLONASS Disciplined Rb Oscillator
VCH-311
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GPS/GLONASS disciplined rubidium frequency standard model VCH-311 is a high stable frequency signal source (STANDARD mode), or precision frequency calibrator for any external standard signals (CALIBRATOR mode). The instrument contains multi-channel GPS/GLONASS receiver, time scale comparison unit and automatically adjustable Rubidium reference oscillator.
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Product
SMB Female to BNC Female Cable, 50 Ohm, 61 cm (Quantity 8)
778415-01
Coaxial Cable
The SMB-BNC Coaxial Cable, sometimes referred to as SMB-100 or SMB-110, connects measurement and signal devices. NI offers this 50 Ω cable in different lengths and quantities.
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Product
Microwave Wideband APD-TIA Receivers
MR12 (40KHz~18GHz)
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Hangzhou Huatai Optic Tech. Co., Ltd.
MR12 series microwave wideband optical receiver, adopts high Sensitivity APD diode and limiting amplifier, within bandwidth of 40KHz~18GHz, they are featured with excellent linearity, high responsibility and superior flatness of the RF response in both, power and phase. They provide an outstanding linearity fiber optical communication for analogue wideband microwave application. Due to avoidance of using expensive coaxial cable or wave-guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless, timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s high speed communication system.
