Products/Services for Local Sidereal Time Clocks
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Time and Attendance Systems - (43 companies)...badge systems are electronic time clocks that require employees to swipe an identifying badge instead of entering a numeric identifier. They may provide TCP/IP connectivity for a local area network (LAN) or wide area network (WAN), and export data...
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IC Clocks - (197 companies)IC clocks are semiconductor integrated circuits (ICs) that are designed to keep time. IC clocks are important components in virtually all electronic components. They maintain synchronization and timing control in: Telecommunications applications... -
Network Clock Sources - (20 companies)Network clock sources are timing devices that use a signal from an atomic clock or other external reference source to set and maintain a central time for all of the elements in a network. They minimize the number of external time... -
Time and Frequency Standards - (33 companies)...that are periodically updated to the national standard or atomic clock through a GPS signal. NIST offers a remote calibration service (TMAS - Time Measurement and Analysis Service) to help laboratories around the country or world maintain an accurate local time... -
Time Servers - (19 companies)...for time servers. Network time protocol (NTP) is an Internet-standard that enables client computers to synchronize their times with master clocks at the U.S. Naval Observatory. NTP runs as a client program and sends periodic time requests to one... -
Time Delay Relays - (287 companies)Time delay relays and solid state timers use solid state electronic devices to provide a time delay. They may have displays, pots or other means of operator interface. They may also have electromechanical or solid state outputs. The number of time...
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Elapsed Time Indicators (ETIs) - (59 companies)Elapsed time indicators (also known as ETIs, elapsed time meters, and hour meters) indicate, monitor, and record durations of time. The most common ETI is the hour meter, which records elapsed time in hours. Elapsed time indicators (ETIs) monitor...
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Time Division Multiplexers (TDM) - (13 companies)...in choosing time division multiplexers is the selection of the transfer mode that will be used. Synchronous transfer mode is a communications mode in which data signals are sent at precise intervals that are regulated by a system clock. Additional start...
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Time of Flight Optical Sensors - (67 companies)Time of flight optical sensors determine displacement and distance by measuring the time it takes light to travel from the instrument to a target and back. The technology is used in most radar, laser, and active acoustic devices. Types of Time...
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Optical Time Domain Reflectometers (OTDR) - (104 companies)Optical time domain reflectometers (OTDR) measure the elapsed time and intensity of light reflected along an optical fiber. They are useful tools for locating problems in an optical network as they can compute the distance to breaks or attenuation...
Product News
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SiTime Corporation
Time to Rethink Jitter in SerDes Clocks! Why It 's Time to Rethink Jitter Analysis of SerDes Reference Clocks in Optical Modules. As optical fiber technology continues to push the limits of data transport speed and efficiency, the challenge falls on silicon SerDes vendors to keep up. One major obstacle? Managing tighter jitter budgets as data rates increase. A challenge in designing faster SerDes chips is meeting increasingly tighter jitter budgets with each new silicon generation. A portion of this jitter budget is allocated... (read more)Browse IC Clocks Datasheets for SiTime Corporation -
ECS Inc. International
32.768 kHz Real-Time Clock for Portable Devices The ECS-RTC-3225-5699C3 is an I2C bus interface real-time clock (RTC) with an embedded 32.768 kHz TCXO with low power consumption. The ECS-RTC-3225-5699C3 features a 3.2 x 2.5 x 1.0 mm package size and +-3 ppm stability over -40 C ~ +85 C operating temperature. The precise temperature sensor and temperature compensated circuit ensure clock accuracy. The RTC supports calendar, clocking, VBAT and timer functions. Ideal for portable, battery-powered and small electronic devices where stability (read more)Browse IC Clocks Datasheets for ECS Inc. International -
ECS Inc. International
Real Time Clock Designed for Small Devices The ECS-RTC-3225-5699HS is a compact I2C real-time clock (RTC) module, incorporating a 32.768 kHz TCXO and a built-in temperature sensor. Packaged in a diminutive 3.2 x 2.5 x 1.0 mm form, it's ideally suited for portable, battery-operated and small-scale electronic devices that demand high stability. This component features a low power consumption of 0.5 uA and maintains a stability of +-5ppm across a temperature range of -40 C to +85 C. Features: Frequency: 32.768 kHz. Built in TCXO sensor... (read more)Browse IC Clocks Datasheets for ECS Inc. International -
RDP Electrosense
Signal Conditioner with Local Transducer Display Versatile Signal Display for Precision Monitoring. The Model E725 delivers real-time local display of transducer values --displacement, pressure, load, and torque --making it ideal for both stand-alone use and integration into control panels. Featuring a bright 5-digit display with peak/valley detection and status indicator lights, it also offers optional mechanical or solid-state relay outputs. With RS232/RS485 serial communication and analog output for PLC integration, the E725 is engineered... (read more)Browse Signal Conditioners Datasheets for RDP Electrosense -
bisco industries
Bisco is your local source for ABB and Military Industries. We strive to be our customers' sole supplier of electronic components and fasteners by being a local presence, providing exceptional service and offering one-stop-shopping. In addition to having a broad line we provide unsurpassed customer service. While other distributors refer smaller customers to call centers, bisco industries understands that every customer deserves personalized service. That is why every inquiry will be directed to a trained sales professional... (read more)Browse Terminal Blocks Datasheets for bisco industries -
SiTime Corporation
Chorus Automotive Clock Generators Highest Integration. FailSafe technology. Chorus TM Automotive is the industry 's first fully-integrated clock with built-in, end-to-end fault monitoring --simplifying system timing architecture and accelerating functional safety development time by up to six weeks. (read more)Browse IC Clocks Datasheets for SiTime Corporation -
SiTime Corporation
SiTime Integrated Clock Chip for AI Datacenters SiTime Corporation Chorus TM family of clock generators are new MEMS-based clock-system-on-a-chip (ClkSoC) family, offering 10X higher performance in half the size, compared to standalone oscillators and clocks. Chorus ' new approach includes clock, oscillator and resonator technologies in an integrated chip, simplifying system clock architecture and accelerating design time by up to six weeks. (read more)Browse IC Clocks Datasheets for SiTime Corporation -
SiTime Corporation
MEMS Clock Generators Cascade TM MEMS-based clock generators feature 4 independent Frac-N PLLs, 4 inputs, up to 10 outputs, wide frequency range from 8 kHz to 2.1 GHz, and a rich set of programmable features in a small 9 x 9 mm package. By integrating the MEMS resonator, these devices enable designers to create a clock-system-on-a-chip and eliminate all quality and reliability issues associated with traditional quartz-based clocks. Always-accurate clock synthesis by eliminating crystal capacitive mismatch... (read more)Browse IC Clocks Datasheets for SiTime Corporation -
SiTime Corporation
Complete and Differentiated Clock Portfolio multiple low-jitter clocks that are resilient against power-supply noise; an active cable requires small size, low jitter and low power oscillators; a SmartNIC requires both ultra-stable oscillators and clocks that are resilient to temperature variations for optimized synchronization performance. Keep Reading... (read more)Browse Network Synchronization Products Datasheets for SiTime Corporation -
Rotork plc
New Local Hand Station Optimized - Hazardous areas The Local Hand Station is suitable for applications such as large penstocks, where it is difficult to access the actuator due to height, in chamber applications where the actuator is located below the ground and space is limited or for control when the actuator/device may be in a hazardous location. Reliable local control is essential in many applications and the Local Hand Station provides a simple control panel interface between the actuator or field device and the Distributed Control System... (read more)Browse Electric Valve Actuators Datasheets for Rotork plc
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TIME IN GEODETIC ASTRONOMY
UTO is observed using the PZT to relate LM ST ( Local Mean Sidereal Time ) to clock time, which is nominally' UT2.
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MMT Pointing And Tracking
Using current time read from a WWV- synchronized clock to calculate local sidereal time , hour angle (HA) is calculated from LST and the RA of the required object.
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Zenith telescope with a mirror micrometer
Here, the hour angle of the star is t = T + k - ~, where k is the clock correction for local sidereal time and ~ is the right ascension of the star.
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From the Transits of Venus to the Birth of Experimental Psychology
For stars whose positions were already well known, their time of meridian passage allowed the determina- tion of the local sidereal time ; the observatory clocks then could be set accordingly.
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THE GEODETIC EVIDENCE CONCERNING WEGENER'S HYPOTHESIS
Using a Bamberg broken-telescope transit, self-recording chronograph and an adaptation of gravity pendulums as precision clocks , comparisons of local sidereal time between the places shown gave the following maximum ranges in the accepted daily values determined between 8th October and …
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Reckoning Time, Longitude And The History Of The Earth's Rotation, Using The Moon
This method presents the advantages of simplicity; it is sufficient, at the beginning or ending of the eclipse to read a clock kept at the local sidereal time .
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Developing improved servos for the multiple mirror telescope
In addition, the VME computer also calculates alt- az and rotator positions based on the LST ( local sidereal time ) acquired from a GPS clock and the catalog coordinates for the object to be observed.
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Biographical Encyclopedia of Astronomers
… interested in positional astronomy as well as statistical astronomy, astrophysics, and cosmology, conducting research on solar eclipses, our own Galaxy, the galactic nebulae and the external galaxies, the synchronization of clocks at mean local time and mean sidereal time, problems of photographic …
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Essential Astrophysics
A terrestrial clock is equal to the local sidereal time only at midnight of the Autumnal Equinox, about Sep- tember 23, and thereafter the local sidereal time gains 2 h on the terrestrial clock for each succeeding month.
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THE ADMIRALTY SEMI-GRAPHIC METHOD OF HARMONIC TIDAL ANALYSIS (Over a Period of One Month)
In case' the clock happens to keep L.S.T., its error is usually determined by comparing the clock times of observations against the local sidereal times as deduced from the computed H.A.'s of the observed stars.
