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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
- TEAM SOLUTIONS, INC.
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USB Digital Storage Oscilloscope, 1GS/s, 200MHz BW, 64M/channel
TS2212B
*1. Up to 7x faster H/W initial time!*2. An additional reference clock input port to synchronize multiple-stacked DSOs!*PC-based (USB2.0 interface)*USB powered*2 channels (stackable up to 12 channels)*1 GS/s real-time sampling*200 MHz bandwidth
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Electrodynamic Vibration Test Systems
DC-series
Depending on the reference PSD or other operating conditions such as the specimen, one part of the controlled response may deviate from the reference PSD
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3-Channel 200 MHz A/D and 2-Channel 800 MHz D/A with Virtex-6 FPGA - XMC
Model 71620
- Complete radar and software radio interface solution- Supports Xilinx Virtex-6 LXT and SXT FPGAs- Three 200 MHz 16-bit A/Ds- One digital upconverter- Two 800 MHz 16-bit D/As- Up to 2 GB of DDR3 SDRAM or 32 MB of QDRII+ SRAM- Sample clock synchronization to an external system reference- Front panel clock/sync bus for multimodule synchronization- PCI Express (Gen. 1 & 2) interface up to x8 wide- Optional user configurable gigabit serial interface- 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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Measurement Of Straightness, Flatness, Positioning Uncertainty Of Round Tables
RTM - Measurement Of Positioning Uncertainty Of Indexing Tables
Optik Elektronik Gerätetechnik GmbH
RTM is a software for the measurement of positioning uncertainty of indexing tables using an electronic autocollimator and a polygon mirror as angle reference.
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Reference Detect Switch
RDS Series 1.5” x 1.5” x 0.6”
*Connectorized Package *Internal/External Reference Detect Switch *Standard Internal TCXO (±2.5 ppm) *Optional Internal OCXO (±90 ppb)
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8-Channel 200 MHz A/D with Multiband DDCs, Kintex UltraScale FPGA - 6U VPX
Model 58862
- 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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Load Cells
Morehouse Instrument Company Inc.
When high accuracy and low risk are critical, customers rely on Morehouse Ultra-Precision Load Cells. These strain gauge type load cells are often the choice for companies that want their reference standard to have the lowest possible uncertainties. Lower uncertainties allow for shorter set up times, less frequent standard changes, and fewer standards to maintain.
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Low Cost Microwave Wideband PIN Preamp Receivers
MR21 (40KHz~18GHz)
Hangzhou Huatai Optic Tech. Co., Ltd.
MR21 series microwave wideband optical receiver, adopts High linear PIN diode and Low noise pre-amplifier IC, 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 and 18Gb/s high speed communication system.
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Reference Transmitter
81491A
Keysight's 81491A Reference Transmitter is designed to offer excellent eye quality for NRZ and PAM4 signals at baud-rates up to 32Gbaud and can serve as universal E/O converter. It comes in Multimode (MM) and Single-Mode (SM) flavors and includes internal lasers at 850nm (MM) or 1310&1550nm (SM). External optical input for usage with tunable laser sources is available for SM option. It is fully integrated into Keysight’s Optical Receiver Stress Test solutions to address test requirements of IEEE 802.3 10,40,100 and 400GBASE optical standards.
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Research Grade.
High-precision, highly-stable battery cyclers that feature advanced EC techniques, five electrode connections and powerful analysis tools. MPG Battery Testers give users real reference electrode management, making them perfect instruments for research and development applications.
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8-Channel VME Time-to-Digital Converter
V680
The V680 is an 8-channel time-to-digital converter used to record the time of occurrence of eight independent electrical pulse inputs, each measured relative to a single, common reference input. Each input channel can time its event "hit" with 48.82-picosecond resolution and 48-bit dynamic range.
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Distribution Amplifiers
A complete range of distribution amplifiers are manufactured by Precision Test Systems. A distribution amplifier is used to distribute the output of a frequency reference to many different places. Usually the frequency is 5 or 10 MHz but we manufacture distribution amps from DC to over 2000 MHz. We make some of the industries lowest phase noise products.
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3207a GPS/GNS Frequency and Time Reference
GlobalTyme2
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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Compact Timing Systems
NanoSync IV & NanoSync IV Low Profile
The NanoSync IV is a small form factor GPS Position, Navigation, Time (PNT) and Frequency reference system that provides multiple reference outputs and includes support for NTP & PTPv2 IEEE 1588-2008. The NanoSync IV has a Rubidium oscillator and is available with a civilian C/A GPS receiver or SAASM (Rockwell-Collins MPE-S GB-GRAM or Trimble Force 22E MRU GPS receiver) for military users. The NanoSync IV is packaged in a small, rugged enclosure ideally suited for embedded electronic warfare applications.The NanoSync IV-SA-Rb has been demonstrated to be compliant to the Joint Airborne SIGINT Architecture (JASA) Version 3.0, Annex 1, for Time, Frequency, Navigation and Geodesy (TFNG), making it suitable for Electronic Warfare (EW) COMINT and ELINT applications in fixed site, airborne and shipboard environments.
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Direct Burial Half Cell Reference Electrode
DB-A
Model DB-A Copper-Copper/Sulfate Reference Electrode designed for direct burial for long term monitoring of buried or earth contacting structures.
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1229a Frequency Generator
Precise Time and Frequency, Inc.
The ptf 1229A utilizes the latest technological advances in precision frequency synthesizers to provide a multiple output, wide range, high precision frequency reference instrument, capable of delivering frequencies over the range of 0.1Hz up to 30MHz with a resolution of 0.1 Hz over the full range.The unit includes an external reference input to allow extremely high accuracy outputs at precisely the frequency required, together with a front panel indicator to verify “lock” to the external reference. The standard unit includes two independent frequency outputs of any frequency within the range, and provides both sine and square wave outputs for each frequency.An expansion module gives the capability to increase the number of independent frequency outputs up to a total of four frequencies, with sine and square wave outputs for each, giving a total of eight outputs.
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Dual Band Block Up-Converter
DBUC Series
*Connectorized Package *Wide Choice of Frequency Ranges *Dual Band *Integrated Filters *Gain Control *CAN, RS-232, I2C, or SPI Control *Internal / External References *Low Power Consumption *Low Phase Noise *Low Spurs
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DC Power Supplies
Is the unidirectional flow or movement of electric charge carriers (which are usually electrons). The intensity of the current can vary with time, but the general direction of movement stays the same at all times. As an adjective, the term DC is used in reference to voltage whose polarity never reverses.
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Time Code Generators
Masterclock's time code generators provide a source of very stable time code and accurate time and date information. The GPS500 extracts timing reference from GPS satellite signals and generate time code synchronized to within less than 10 microseconds of UTC (Universal Coordinated Time). It can output IRIG-B with and without IEEE 1344 date encoding, SMPTE/EBU, NMEA 0183, Kinemetrics/Truetime, and 1PPS.
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Resolver to DC Sine / Cosine or Synchro to DC
ST-RD & ST-SD
Computer Conversions Corporation
ST-RD and ST-SD Series - Resolver to DC Sine / Cosine or Synchro to DC Sine Cosine Packaged on PCB with Track and Terminal Block and On-Board AC Reference Supply may be used driving DC Servo amp in active position synchronizing applications
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Frequency Synthesizers
A frequency synthesizer allows the designer to generate a variety of output frequencies as multiples of a single reference frequency. The main application is in generating local oscillator (LO) signals for the up- and down-conversion of RF signals.
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Synchro Power Amplifiers
SSP
Computer Conversions Corporation
The SSP Series are Compact, Reference Powered and Isolated Synchro Power Amplifiers, and AC Sine/Cosine ( Resolver ) to synchro converters; designed for moderate wattage, and re-transmission requirements; providing ultra high efficiency, and ultra high reliability in service, and ease of use. They are ideally suited for demanding Naval/Maritime, Aircraft, and Radar/Antenna related, applications. They are commonly used on synchro based data transmission, retransmission, simulation, and active control systems. They are suitable to drive both CT and CDX type passive loads, and virtually any synchro input instrumentation, or control.
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4-Channel 200 MHz A/D with DDC, Kintex UltraScale FPGA - 3U VPX
Model 52861
- 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- Four 200 MHz 16-bit A/Ds- Four multiband DDCs (digital downconverters)- 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 x4- 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)- Ruggedized and conduction-cooled versions available- Synchronize up to eight modules with Model 7893 System Synchronization and Distribution Amplifier - PCIe
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Block Down-Converter
BDC Series 5” x 2.5” x 0.6”
*Connectorized Package *Compact, Rugged Design *Custom Designs Available *Internal Low-Noise LO *Automatic Switchover to Internal Reference ifExternal Reference is Removed
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COM Express Type 10 Starter Kit Plus
COM Express Type 10 Starter Kit Plus
The COM Express Type 10 nanoX Starter Kit Plus consists of a COM Express Type 10 core module reference carrier board that provides two PCIe Mini Card slots, 2 RJ-45 LAN ports, 2x USB 3.0, 2x USB 2.0, 1x USB client, 2x DB-9 COM, 1x SD card socket, and Mic/Linein/ Line-out. ADLINK also provides additional development tools including a verified 10.1" LVDS panel (optional), power supply, thermal solution and cabling accessories.
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Frequency Shaped Isotropic Electric Probes
PI-SH-FCC, PI-SH-ICNIRP
An isotropic electric field probe with shaped frequency response meeting the ICNIRP or FCC RF safety standards for occupational and general public exposure limits (see the specified frequency ranges below). Meter readings are shown in % of the STD – standard reference level, eliminating the need to know the source frequency. Probe output is proportional to RF power density in the whole specified power range, producing the correct RF power measurements in single and multi-signal environments, typically present at multiple antenna sites.
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Pressure Comparator (System E)
P014
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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6-Channel 200 MHz A/D and 4-Channel 800 MHz D/A with Virtex-7 FPGA - 6U VPX
Model 58720
- Supports Xilinx Virtex-7 VXT FPGAs- GateXpress supports dynamic FPGA reconfiguration across PCIe- Three or six 200 MHz 16-bit A/Ds- One or two DUCs (Digital Upconverters)- Two or four 800 MHz 16-bit D/As- 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- Optional user-configurable gigabit serial interface- Optional LVDS connectionsto 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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Primary Standard Capacitors
GenRad 1404 Series
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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Comb Generator, 10 MHz to 50 GHz
U9391F
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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5VA Reference Supply, DC input
PS5410C-16
The PS5410C-16 is a 5VA AC Reference Power Supply, available with many transformer isolated output voltages at different frequencies. Input power is either 12 VDC or 15 VDC. The standard 15 pin "D" connector simplifies interconnection to other equipment.
