Time Reference
An absolute measure of time.
See Also: Time, Timers, Time Interval, GPS Time, Time Code, Time Domain, Time Standards, Timing, Frequency Synthesizers, Time & Frequency, Clocks
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Product
Low Cost Microwave Wideband APD Preamp Receivers
MR11 (40KHz~18GHz)
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Hangzhou Huatai Optic Tech. Co., Ltd.
MR11 series microwave wideband optical receiver, adopts high Sensitivity APD diode and Low Noise Preamplifier 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 high speed communication system.
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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.
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Product
Rugged GPS Time & Frequency Reference
VersaSync
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VersaSync is a high-performance GPS master clock and network time server that delivers accurate, software-configurable time and frequency signals in harsh environments, including GPS-denied areas. Now with M-Code!
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Quantum & Metrology Instruments
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Beyond quantum sensors, Exail’s photonics solutions enable real applications in other quantum technology fields. They also enable precise control and transmission of the frequency, phase and amplitude of a laser light through fibered telecommunication links, for metrology applications. The true and deep understanding of Exail teams for the fundamental physics behind its technology explains the absolute quality of its time & frequency reference products.
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Product
Digitizer
742 Family
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The 742 is the Switched Capacitor Digitizer family, based on the DRS4 chip by PSI, with the highest sampling frequency (5GS/s) and channel density. It can record very fast signals from scintillators coupled to PMTs, Silicon Photomultipliers, APD, Diamond detectors and others, and save them with high efficiency and precision for advanced timing analysis. The 742 family has an additional channel (two channels in case of VME boards) which can be used as time reference for time of fight measurements. The resolution of this kind of measurements can reach up to 50 ps.
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Product
1211a Optical Receiver/Distribution
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Precise Time and Frequency, Inc.
To complement the range of high quality frequency and timing references, Precise Time and Frequency, LLC. has now introduced a new Optical Time Code Receiver, with Auto Switching, a full complement of time code outputs, and Ethernet/RS232 remote monitoring/control interface.In addition to the auto switching capability, the new ptf 1211A delivers up to thirty six channels of Time Code outputs, including re-transmission of the optical input. The unit can accept a pair of inputs (usually from separate primary and backup sources), and provides monitoring of both the inputs and outputs for signal integrity.If the primary input fails, the unit will automatically switch to the backup input and indicate a primary signal fault.Full remote monitoring and control via RS232 and Ethernet interfaces includes telnet, http (web browser), and SNMP protocols.
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Product
PCI Express Timecode and GPS Reader Generator
PCIEX-SyncClock
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The PCI-Express time code reference timing card with standard options such as IRIG B and optional GPS receiver provides an extremely accurate time source to the PCI-Express bus.
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Product
AC Reference Modules
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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
Transition Time Converter, 150ps
15435A
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The new design of these transition time converters ensures very low signal reflection far beyond the 3 dB point, unlike conventional converters.Reducing the signal transition-times also increases the overall pulse-performance for overshoot/reflection sensitive applications.The converters are fitted with SMA connectors, one male, one female.
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Product
E-Band Signal Analysis Reference Solution
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The E-band signal analysis reference solution provides an effective measurement solution for today’s wideband signals as well as emerging communications standards. With the M1971E waveguide harmonic mixer, which provides a 55 to 90 GHz input; Keysight oscilloscopes, which provide excellent signal integrity; and the powerful 89600 VSA software, you have a high-quality wideband measurement solution. A simple user interface also provides integrated mixer setup, correction and LO optimization, allowing for accurate measurements.
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Product
PXIe-6674T, OCXO PXI Synchronization Module
781037-01
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PXIe, OCXO PXI Synchronization Module—The PXIe‑6674T generates and routes clocks and triggers between devices in a PXI Express chassis as well as to other PXI and PXI Express chassis or third-party instrumentation. The PXIe‑6674T unlocks the advanced low-voltage differential signaling (LVDS) trigger signals PXIe‑DStarA, PXIe‑DStarB, and PXIe‑DStarC, on PXI Express while fully supporting the PXI trigger lines. The PXIe‑6674T can generate two types of clock signals: a highly stable 10 MHz clock based on an onboard precision oven-controlled crystal oscillator (OCXO) reference and a second clock from the direct digital synthesis (DDS) clock generation circuit.
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Product
Personal Gamma Radiation Dosimeter
EcotestCARD
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The radiation monitoring badge EcotestCARD allows storing dose accumulation history with real time reference in the non-volatile memory, and communicating it to the computer. If the programmed threshold levels of gamma dose or its rate are exceeded, light and audio alarms are actuated.
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Product
SparkFun GNSS Timing Breakout
ZED-F9T (Qwiic)
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The SparkFun GNSS Timing Breakout offers a unique entry into SparkFun's geospatial catalog featuring the ZED-F9T GNSS receiver from u-blox. The ZED-F9T provides up to five nanosecond timing accuracy under clear skies with no external GNSS correction making it perfect for applications where timing accuracy is imperative. Need an extremely accurate time reference to maximize the efficiency of your IoT network of 5G devices? The ZED-F9T GNSS Timing Breakout could be the perfect solution.
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Product
Transition Time Converter, 250ps
15432B
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The new design of these transition time converters ensures very low signal reflection far beyond the 3 dB point, unlike conventional converters. Reducing the signal transition-times also increases the overall pulse-performance for overshoot/reflection sensitive applications. The converters are fitted with SMA connectors, one male, one female. These converters have been designed to convert the fixed transition-times of the Keysight 8133A 3 GHz timing generator (<100 ps transitions) to slower, fixed transition-times (150 ps, 250 ps, 500 ps, 1 ns, 2 ns) hence reducing the signal bandwidth. All transition-times are from 10% to 90% of amplitude.
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Product
35/50 GHz 2/4 Port TDR/TDT Remote Sampling Head for the 86100D DCA-X
N1055A
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Bandwidth options: 35 or 50 GHz (upgradable)Edge speed (10-90%, typical): 18 ps (35 GHz) or 7 ps (50 GHz)Channel options: 2 or 4 per module (upgradable) with independent skew control and up to 16 channels per 86100D mainframe Ultra-thin remote head: 1.6 m phase-stable cable, 2.92 mm (35 GHz) or 1.85 mm (50 GHz) connectors, and integrated 67 GHz diode limiters for ESD/EOS protection TDR fixture de-embedding removes effects of fixtures, cables or probes connected between remote heads and DUT
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Product
MuClock
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Our Muclock is the only commercially available time & frequency reference based on quantum manipulation of laser cooled atoms in the world. This unique solution is the result of more than 15 years of experience acquired by our academic partner, LNE-SYRTE, one of the major international experts in the field of time standards.
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Product
Transition Time Converter, 500ps
15433B
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The new design of these transition time converters ensures very low signal reflection far beyond the 3 dB point, unlike conventional converters. Reducing the signal transition-times also increases the overall pulse-performance for overshoot/reflection sensitive applications. The converters are fitted with SMA connectors, one male, one female. These converters have been designed to convert the fixed transition-times of the Keysight 8133A 3 GHz timing generator (<100 ps transitions) to slower, fixed transition-times (150 ps, 250 ps, 500 ps, 1 ns, 2 ns) hence reducing the signal bandwidth. All transition-times are from 10% to 90% of amplitude.
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Product
GPS Master Clock
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Signals & Systems India Private Limited
GPS Master Clock System – MCS-GPSMC-1010 is a 3U Card rack type, 19” Rack-mountable Redundant GPS Time Server which synchronizes and maintains the timing and frequency requirement of power and process industry equipment using a signal obtained from any one of the sources like GPS or GLONASS or Time protocols such as NTP and IRIG. It distributing the same time signal through several types of interfaces. It provides redundancy for Power and GPS receiver to increase reliability and offers protection against time synchronization failure. The system is field-upgradeable and an extremely flexible system, designed to handle time synchronization requirements today and in the future. It provides nanosecond accuracy when external time references are not available. It has a storage facility to store the system log file. It delivers NTP, SNTP, IRIG-B, PFC-Pulse, DCF77, BCD parallel data, Ethernet Fiber Optic & RS485/RS232 outputs. System enables configuration and monitoring through Web-based application. It supports a wide range of power supply either 90V-260V AC/DC or 18-36VDC or 36V-72VDC. Power supply model can be mixed and matched as required by the user, depending upon power supply options available at the installation site.
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Product
Reference Meters
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Whether standard or high precision, ThermoWorks handheld meters feature rugged housing and best-in class accuracy across a variety of temperature ranges. Choose from integrated systems or meters that accept multiple probes, single or dual channel meters, alarms or reference models. Perfect for BBQ or sous-vide applications, dairy processing and meat processing, pharmaceutical labs, concrete curing, health departments, and for line checks, critical control point management, and HACCP checklists.
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Product
Reference Antennas
Type NRD
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Reference antennas are precision dipole antennas that offer a fixed 2.15 dB of gain over an isotropic antenna along the major lobe axis at specified frequencies (2.15 dBi). They are intended to be used for antenna field pattern and gain measurements, or general RF sensing in the laboratory.
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Reference Magnet
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Reference magnets generate a homogeneous magnetic field in an air gap. They are mainly used to calibrate hall probes for their full scale value of output for the magnetic field strength H or the magnetic flux density B they measure. For example Gaussmeters can be calibrated by using reference magnets.
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Product
Reference Standard
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Beijing GFUVE Electronics Co.,Ltd.
It has been designed for universal laboratory and test applications and is intended for checking and the calibration of reference standards for electrical power and energy.
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Product
Time Server
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Beijing GFUVE Electronics Co.,Ltd.
Provides accurate synchronization time signals to various power system automation devices by using the second synchronization signals and time information messages sent by BeiDou Navigation System, GLONASS (global navigation satellite system) and GPS (Global Positioning System) satellites.
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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
Timing Relays
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Is particularly suitable for use in protection & control schemes where precision time delays are required.
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Product
RF Reference Source
96040A Series
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The 96040A RF Reference Source enables you to simplify your RF calibration system by replacing many of the instruments and accessories that make up your current system.
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Product
Reference Cells
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Reference cell is used for measuring and setting the intensity of solar simulators for one sun (or other user desired) intensity condition. They are also used to calibrate the IV Measurement system photo-detector intensity to match the measured ISC to calibrated ISC.
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GPS Frequency Reference
E8000
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The Quartzlock E8000 GPS Frequency Reference is a breakthrough in exceptionally low cost, traceable, 1-U rack mount, calibration-free, off-air frequency & time standards. These very low cost references maintain the high frequency & time accuracy required for demanding applications. Ultra low noise option are available.
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Product
Reference Meter
ST1000
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Shenzhen Star Instrument Co., Ltd.
The ST1000 three-phase reference meter incorporates high-precision A/D converter, DSP, wide-range measuring and embedding industrial PC technologies. It has a high accuracy of class 0.01. The voltage measuring range (phase voltage): 1V~480V, current measuring range: 1mA~120A.
