euclid The Time Traveler's Clock, Руководство пользователя

Страница: 30 / 34

o Rate Atomic and Rate Error Measurement
1. The “Rate Atomic” button is a push-on/push-off button. It is lit green when the
“Rate Atomic” function is engaged. Engaging this function prevents the
ServoSync motion being turned off at midnight when the timing of the
chronometer is measured. If “Rate Atomic” is engaged, the rate measured by
the rating system will be the rate of the chronometer while being impulsed by
the ServoSync system (hence, the rate error should be close to zero).
2. In order to conserve paper, there is no need to operate the Printer when the
Rate Atomic function is engaged.
3. The Rate Atomic button may be engaged during normal operations, but it is
recommended that at least once per month the function be turned off and the
Printer turned on, so historical rate error data may be gathered for possible
future use. Rate error measurement occurs at midnight UTC each day.
o Rate Now
“Rate Now,” illuminated yellow, is a momentary control button which causes the
rate-error measurement system to go into action whenever desired. Provided the
Rate Atomic control is turned off, the chronometer will go into stand-alone
operation without ServoSync, and its rate will be measured against the GPS/Atomic
reference; the result will be printed on the Printer exactly as it would be at
midnight.
o Set RTC
“Set RTC” button, illuminated red, is used only in the case when it is desired to reset
the silicon Real Time Clock to GPS time. This should only be done if a reliable GPS
signal is present (latitude and longitude are shown on the GPS display). It may take
several presses of the button to set the RTC precisely to GPS time. (Note: the Set
RTC button should only be pressed when the GPS time reads between zero and forty
seconds.)
• Winding Controls
o Wind Now
1. Pressing the Wind button will cause the winding mechanism to cycle. In order
to wind a chronometer that has run down, it would be necessary to press the
Wind button several times.
o AutoWind
1. If AutoWind is engaged (push-on/push-off, lit white when turned on) the
chronometer will be wound to the preset value (usually 8 hours from full wind)
every hour, on the hour. During normal operation of the TTC, this function
should be turned on.
o Manual Winding
1. If the AutoWind function is not working (because of loss of power or failure of
the mechanism), the chronometer should be manually wound at least once per
day.