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
3207a GPS/GNS Frequency and Time Reference
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Precise Time and Frequency, Inc.
The ptf 3207A GlobalTyme2 GNS Receiver introduces a new level of advanced capability from a second generation, based on the highly successful ptf 3203A and ptf 3204A GlobalTyme receivers.The unit is both a frequency standard and a time standard and has been used as a precision frequency reference with low phase noise, in satellite communications applications around the world.
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Product
Data Storage
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Data storage refers to magnetic, optical or mechanical media that records and preserves digital information for ongoing or future operations.
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Product
Phase Noise Analyzer
NXA-6
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This new NXA-6 is a sea-change in Phase Noise Test Systems. Making both residual and absolute noise measurements out to 6 GHz, this self-contained instrument uses either internal or external references with cross correlation for maximum dynamic range.
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Product
Telemetry Transmitter for FM with up to 3 Bands
LS-11-F
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The LS-11-F portable FM test transmitter is designed for checkout and troubleshooting of telemetry receiving systems operating with FM modulation. For applications with any of the ARTM modulations (Tier 0, Tier I, or Tier II), please refer to the LS-11-M Data Sheet. Complete ground stations including the antenna with LNA, RF down-converter, IF receiver, bit synchronizer, and PCM decommutator can be tested and bit error tests performed. The design allows secure links to be tested with an external encryptor. The Test Transmitter contains an internal PCM Data Simulator and Pseudorandom patterngenerator that operates in a BERT mode. The device provides simulated clock and data (without transmitter enabled) and accepts external data for modulating the internal transmitter. Complete setup can be achieved locally through the keypad and two-line LCD display or remotely through the USB Interface. Operational parameters include the PCM format parameter database information (frame sync patterns, wavewords, etc…), pre-modulation filter selection, transmitter carrier frequency, transmitter deviation, and output power level. Output power can be selected from approx. -60 to +5 dBm in 5 dB steps. The Test Transmitter contains a LiFePO4 Battery (Lithium Iron Phosphate), which provides higher energy density at ¼ the weight of legacy lead-acid batteries. The unit also provides an internal battery charger and will operate for up to twelve hours on battery power having received on a full charge.
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Product
Cable Assembly, 200-Pin LFH, Male (Male Screwlocks) to 4x50-Pin D-Type Male, 0.5m
40-971B-200D-0.5m-MM
Cable Assembly
This male rear exit to D-type 0.5m long cable assembly is suited for direct connection to all Pickering Interfaces products using the 200-Pin LFH connector. It is constructed from 4 bundles of 50-wire round/flat ribbon cables, terminated with 50-pin male D-type connectors. The connector can be secured to the product by screwlocks. The cable assembly can be used with Pickering's 50-Pin D-Type connector blocks (refer to 90-005D). Each of the four D-type cables is numbered to allow identification.
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Product
Comb Generator, 10 MHz to 50 GHz
U9391F
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The Keysight Technologies, Inc. U9391F 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.
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Product
7-Slot 3U OpenVPX Backplane Aligned To SOSA | 6 VITA 65 Slots + 1 VITA 62 PSU Slot
1SVX306AXX-XX31
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These six VITA 65 slots plus one VITA 62 slot (6+1) backplanes are designed in alignment with The Open Group® Sensor Open Systems Architecture™ Technical Reference Standard, or SOSA®.
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Product
Fully automated Crude and Detergent Fibre analysis
Fibertec™ 8000
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The Fibertec 8000 is a fully automated system for determination of crude fibre, detergent fibre and related parameters according to standard reference 'crucible' methods such as Weende, van Soest and other recognised methods. Approvals for the crucible method include ISO, EEC, AOAC, AOCS. The Fibertec 8000 provides unrivalled accuracy, the highest safety and the lowest operator time of any fibre solution.Parameters: Crude fibre, neutral detergent fibre, acid detergent fibre, acid detergent lignin. Sample types: Raw materials and finished products in Feed and Agriculture.
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Product
Analog Tank Test Kit
4108
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The voltmeter included in the kit, the “Model IA” voltmeter, is designed for ease of use by meter readers and corrosion technicians alike and the voltmeter comes with an integrated RE-5 reference electrode attached for “metallic structure-to-soil” potential difference readings. The kit also includes a special test lead that has a brass thumb screw on one end which allows the test lead to substitute for the RE-5 reference electrode. This substitution allows the voltmeter to take “structure-to-structure” potential difference readings. The voltmeter offers a 0 - 2VDC range with a 10MΩ input impedance and the analog display presents a color divided scale for convenient indication as to whether or not a carbon-steel structure is receiving a suitable level of cathodic protection, with respect to the accepted 0.85V (850mV) threshold value.
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Product
Power Meter
TW3211
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Techwin(China) Industry Co., Ltd
TW3211 optical power meter Is a handheld optical power meter, newly released in 2007, which can be used for absolute optical power measurements as well as for relative loss measurements in optical fibers. A Ø1.0mm photosensitive area photodiode is used to significantly improve the stability and the reliability. It features ingenious appearance, a wide range of power measurement, high accuracy, an user self-calibration function and a reference power level storage.
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Product
RF Reference Sources
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The 27 GHz 96270A and 4 GHz 96040A Low Phase Noise Reference Sources are designed specifically for RF calibration, featuring a calibration-oriented interface, precision signal level and attenuation, high signal purity and precision low distortion modulation. Both instruments simplify the process of RF calibration by reducing the amount of equipment and simplifying the calculations required.
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Product
Redundant Reference Frequency Shaper
CH7-317
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Redundant reference frequency shaper Ch7-317 is designed to generate and reproduce frequency and time signals protected from frequency and phase failures based on the results of signal processing from a group of frequency and time keepers.
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Product
8-Channel 200 MHz A/D with Multiband DDCs, Kintex UltraScale FPGA - 6U VPX
Model 58862
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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- Eight 200 MHz 16-bit A/Ds- Eight multiband DDCs (digital downconverters)- 10 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 connections to the FPGA for custom I/O- Ruggedized and conduction-cooled version available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
OnyxFX FlexorSet 8-Channel 250 MHz A/D with DDCs - PCIe
Model 7070-317
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- Supports Xilinx Virtex-7 VXT FPGA- GateXpress supports dynamic FPGA reconfiguration across PCIe- Eight 250 MHz 16-bit A/Ds- Eight multiband DDCs- 4 GB of DDR3 SDRAM- Sample clock synchronization to an external system reference- PCI Express (Gen. 1, 2 and 3) interface up to x8- Optional optical Interface for backplane gigabit serial interboard communication- Optional LVDS connections to the Virtex-7 FPGA for custom I/O- Compatible with several VITA standards including: VITA-46, VITA-48 AND VITA-66.4 and VITA-65 (OpenVPX™ System Specification)- Also available as Model 5973-317
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Product
4-Channel 200 MHz A/D with DDC, Virtex-7 FPGA - 6U VPX
Model 57761
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- Supports Xilinx Virtex-7 VXT FPGAs- GateXpress supports dynamic FPGA reconfiguration across PCIe- Four or eight 200 MHz 16-bit A/Ds- Four or eight multiband DDCs- Multiboard programmable beamformer- 4 or 8 GB of DDR3 SDRAM- PCI Express (Gen. 1, 2 & 3) interface up to x8- Sample clock synchronization to an external system reference- LVPECL clock/sync bus formultimodule synchronization- 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 eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
L-Band RF Tuner and 2-Channel 500 MHz A/D with Virtex-7 FPGA - 6U VPX
Model 57791
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- Accepts RF Signals from 925 MHz to 2175 MHz- One programmable LNA handles L-Band input signal levels from -50 dBm to +10 dBm- Programmable analog downconverter provides IF or I+Q baseband signals at frequencies up to 123 MHz- Two 500 MHz 12-bit A/Ds digitize IF or I+Q signals synchronously; optional: 400 MHz 14-bit A/Ds- Two FPGA-based multiband digital downconvertersXilinx Virtex-7 VX330T or VX690T FPGAs- 4 GB of DDR3 SDRAM- Sample clock synchronization to an external system reference- PCI Express (Gen. 1, 2 & 3) interface, up to x8- Clock/sync bus for multimodule synchronization- Optional user-configurable gigabit serial interface- Optional LVDS connections to the Virtex-7 FPGA for custom I/O- Supports GateXpress® FPGA-PCIe Configuration Manager- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Product
2-Channel DAQ Module
FMC151
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Sundance Multiprocessor Technology Ltd.
The FMC151 is a dual channel ADC and dual channel DAC FMC daughter card. The card provides two 14-bit A/D channels and two 16-bit D/A channels which can be clocked by an internal clock source (optionally locked to an external reference) or an externally supplied sample clock. In addition there is one trigger input for customized sampling control. The FMC151 daughter card is mechanically and electrically compliant to the FMC standard (ANSI/VITA 57.1).
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Product
Gas Filter Correlation Carbon Dioxide Analyzer
Model T360
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The Model T360 CO2 analyzer measures Carbon Dioxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. Using a Gas Filter Correlation Wheel, a high-energy IR light source is alternately passed through a CO2 filled chamber and a chamber with no CO2 present. The light path then travels through the sample cell, which has a folded path of 2.56 meters.The energy loss through the sample cell is compared with the reference signal provided by the filter wheel to produce a signal proportional to concentration, with little effect from interfering gases within the sample. This design produces excellent zero and span stability and high signal to noise ratio, allowing excellent performance over a wide concentration range.All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/O, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.The Model T360 comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software.
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Product
R1005050 Ribbon Cable, 2 m
182762-02
Ribbon Cable
The R100M-50F-50F Cable, sometimes referred to as R1005050, is a Y-shaped ribbon cable that connects to the 100-pin connector on NI digital devices. The R100M-50F-50F Cable is offered in different lengths.
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Product
SHC68M-68F-RMIO, 68-Pin Male VHDCI to 68-Pin Female D-SUB, Shielded Multifunction Cable, 2m
189588-02
Multifunction Cable
68-Pin Male VHDCI to 68-Pin Female D-SUB, Shielded Multifunction Cable - The SHC68M-68F-RMIO Cable, sometimes referred to as SHC68-68-RMIO, connects to the terminal block of a multifunction reconfigurable I/O (RIO) device. The SHC68M-68F-RMIO Cable is offered in different lengths.
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Product
API Development & Testing Platform
StopLight
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The best way to model, document, and test web APIs. Model complex APIs faster than ever. Stoplight consists of four primary components; API designer, hosted documentation, the new scenarios component, and Prism. Stoplight API designer automatically discovers APIs from HTTP traffic which developers can reference to build new APIs. Developers can use the API designer to build APIs based on imported API definition files such as RAML and Swagger, and build APIs from scratch.
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Product
Optical Chopper
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These high stability variable frequency optical choppers each include a set of chemically blackened photoetched chopping discs. The mini chopper is an excellent choice for applications requiring a compact package. The chopping discs come in a variety of slot apertures and allow operation. Beam diameter is limited to 0.75mm when using the 200-slot disc and 1.0mm when using the 40 slot mini disc. The easy-to-interchange blades are made of non-magnetic, half hard brass and can be used in combination. Chopping frequency is set by adjusting a ten-turn dial or by applying an external DC voltage to the BNC input. Reference output is a TTL pulse and is in-phase with chopping action. The 5 digit led display gives a direct read-out of the chopping frequency. Power: 90-130V or 180-260V; 50/60Hz; 12VA max. Power supply included. Choppers are often used together with lock-in amplifiers.
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Product
Spectrum Analysis, Up To 70 GHz
S930907B
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The S930907B spectrum analysis (SA) adds high-performance microwave spectrum analysis to the N522xB/N524xB PNA family up to 70 GHz. With fast stepped-FFT sweeps resulting from optimized data processing, the SA application provides quick spurious searches over broad frequency ranges. Simultaneous spectrum measurements can be done using up to five test and reference receivers. This multi-channel SA can be used with the internal swept-signal generators for efficient measurements of spurious signals emanating from mixers and frequency converters. The SA application employs source-power and receiver-response calibration as well as fixture de-embedding, providing in-fixture and on-wafer spectrum measurements with the highest level of accuracy.
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Product
Seismic Sensors & Transducers
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Displacement Pickups are vibration transducers that incorporate a spring-mass system with eddy-current damping using a frictionless pivot. This pivot is a spring flexure that serves as the ‘spring’ and a moment arm attached to the pivot serves as the ‘mass’, which allows resolutions down to the micro inch range. At frequencies above 50Hz, the mass remains fixed in space and becomes an inertial reference.
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Product
4K Picture Quality Analyzer
VP4000
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The The frame delay of 2160p full sample 4K reference video and 4K test video are compensated to fit exactly to each other by pixel base, and a real time objective quality score (DSCQS) are calculated by the ITU-T J.144-based assessing method in conjunction with the differential values (PSNR). This scheme is best suited to the encoder evaluation, online/standby comparison, inspection geared to video servers, and so on. For conventional 1080i image evaluation, a single PROBE4000 board can serve the purpose.
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Product
Xytronic Three-Phase Reference Standard +/- 0.04%, +/- 0.02%, +/- 0.01%
RADIAN RX-30, RX-31 and RX-33
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Radian Research is committed to providing our customers with leading innovative and technologically superior products, while maintaining metrology capability in power and energy measurement that is surpassed by none. Our engineers drew on the expertise and knowledge we acquired for our industry-leading legacy RM (Metronic) and RD (Dytronic) reference standards to develop the RX (Xytronic), the ultimate in power and energy measurement technology perfection.
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Product
Solar Monitoring Stations
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EKO Instruments unique Solar Monitoring Station (SMS) is the primary reference to collect high quality solar irradiance data on-site. The innovative turn-key system provides all fundamental solar radiation and meteorological parameters for PV site evaluation, performance monitoring and cell optimizing.
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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
Receiver-Synchronizer
VCH-311C
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The receiver-synchronizer VCH-311C is intended for use in synchronization networks as a primary reference source of highly stable synchronization signals of the first level of the hierarchy, periodically corrected in frequency according to the exact time signals (time scale) of the NKA KNS GLNASS / GPS
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Product
3-Slot Data Acquisition Mainframe With GPIB And Three 20-Channel Multiplexer Modules
DAQ973MB
Mainframe
The DAQ973MB Better Multiplexer Bundle offer includes a DAQ973A three-slot data acquisition mainframe and three 20-channel DAQM901A multiplexer modules. This bundle provides the following:3-slot mainframe with USB, LAN, and GPIB6.5-digit (22-bit) internal DMM60 channels of multiplexer switches6 channels of dedicated current measurements2- and 4-wire scanning300 V switching80 channels/s scanningbuilt-in thermocouple reference junctionbuilt-in signal conditioning to measure thermocouples, RTDs and thermistors, AC / DC volts and current; resistance, frequency / period, diode test, and capacitance





























