clock drive การใช้

• A 5 MHz reference clock drives a phase-locked loop to produce a stable 500 MHz clock.
• A motorized clock drive often is used with an equatorial mount to cancel out the Earth's rotation.
• After that hour the mount has to be pivoted back to the east to reset the clock drive mechanism.
• This time, John Elway didn't have to win the game for the Denver Broncos with one of those classic, beat-the-clock drives.
• At the end of their drive limit the mount has to be pivoted back to the east to reset the clock drive mechanism.
• Since the Poncet platform has no roller bearing surfaces that can be driven, the clock drive mechanism itself has posed some design difficulty for telescope makers.
• The CIF also includes the Central Timing Facility, where a precision clock drives countdown clocks and other timing devices at KSC that require a high degree of accuracy.
• In 1881, he replaced the original telescope with a Grubb reflector of 24 inches ( 61 cm ) aperture and a new dome and mounting that had an electrically controlled clock drive.
• This instrument has been upgraded with a new optics lens and a new clock drive, and an ST-4 star tracker was attached to the telescope's side to correct a two-minute, ten-arc second periodic motional error.
• The method is based on attempting to track stars in the sky using the clock drive; any error in the polar alignment will show up as the drift of the stars in the eyepiece / sensor.
• A telescope mounted on one of these mounts can be aimed at a celestial object and easily guided by either manual, slow-motion controls or by an electric clock drive ( standard on many high-end models running $ 1, 200 or more ).
• I took a class a few years ago that taught me how to solve this problem, but essentially I would like to minimize the amount of time for each of these 4 routes and minimize the amount of " off the clock driving " I do.