euclid The Time Traveler's Clock, Руководство пользователя

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support bearing was changed from the lazy-susan bearing to a precision V-groove
circular rail with four support bearing rollers; the rear part of the rail was cut away to
allow the chronometer to be rotated for winding. This bearing arrangement was more
precise, so the servo synchronizing mechanism performed much better.
The displays were simplified to two LCD displays: one showing the GPS date, time,
latitude, and longitude and one showing date and time from the RTC. No separate
display was used for the CSAC, as it operates only to supply the 10MHz precision
reference frequency.
The rubidium MAC was replaced with the cesium CSAC used in the Cesium Breadboard
Prototype. Otherwise, the MCB Prototype was like the Cube Box Prototype and used
the same electronic hardware and firmware. The operational scheme remained with
the GPS module being fed a precision 10MHz frequency reference from the CSAC to
ensure long-term accuracy during holdover.
Figure 8: Metal Cube Box Time Traveler’s Clock (rendered with clear case)
How the TTC Works
Marine Chronometer Advantages and Deficiencies
The Hamilton 21 Marine Chronometer represents the height of development of
portable mechanical clocks for navigation. The basic design, developed by several
companies in Switzerland (Zenith, Ulysse-Nardin, Ditisheim, among others) includes a