Atomic 513-1211 Folheto

 

 

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Large 4 inch time display. 

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12/24-hour time selectable. 

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Atomic Time and Date with manual set option 

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Four Time Zones: Eastern, Central, Mountain, & Pacific. 

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Daylight Saving automatically updates (On/Off option). 

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Calendar: Month, Date, Day. 

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Time alarm with snooze. 

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Monitors Indoor temperature (°F or °C) 

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Low battery indicator. 
 

Selector bar 

 

Setup: 
 

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Select the time zone with the 
SELECTOR BAR on the back of 
the clock. 

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Slide battery cover up to open. 

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Insert three AA alkaline batteries 
according to polarity markings.               

 

 

 

 

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Do not press buttons for four minutes to allow the clock to search 
for a WWVB signal. The tower icon   will flash. 

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Note: If only the bottom of the tower icon    is showing and the 
top of the icon    is not flashing, reposition the clock for better 
signal reception. 

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When WWVB signal reception occurs, the time and date will set 
and the tower icon   will show solid above the seconds. 

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Note: During the search for the time signal the other set functions 
will not work. This is normal and not a defect in the clock. Press 
the WAVE/+ button at any time to stop the signal search. Hold the 
WAVE/+ button for 3 seconds to initiate a signal search. 

 
WWVB Radio controlled time 
The NIST radio station, WWVB, is located in Ft. Collins, Colorado and 
transmits the exact time signal continuously throughout the United 
States at 60 kHz. The signal has a range of up to 2,000 miles. 
However, due to the nature of the Earth’s Ionosphere, reception is very 
limited during daylight hours. The atomic clock will search for a signal 
every night when reception is best. The WWVB radio station derives its 
signal from the NIST atomic clock in Boulder, Colorado. A team of 
atomic physicists continually measures every second of every day to 
an accuracy of ten billionths of a second a day. These physicists have 

created an international standard, measuring a second as 
9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. This 
atomic clock regulates the WWVB transmitter. 

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The clock receives the time signal via its built-in antenna and 
adjusts automatically to the selected time zone. Once the correct 
time is set, the clock continues running with an internal quartz-
controlled mechanism. 

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The reception system of the clock daily compares its data at 
2:00am, to the signal from the WWVB transmitter. If no signal is 
received for four minutes, the system will automatically try to 
compare the time at 3:00am, 4:00am and 4:00pm. 

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The internal quartz-mechanism is very accurate; therefore, it does 
not matter if the clock is occasionally unable to receive the time 
signals. 

 
When the tower icon flashes, but does not set the time or the WWVB 
tower does not appear at all, take note of the following: 

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Recommended distance to any interfering sources like computer 
monitors or TV sets is a minimum of 6 feet (2 meters). 

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Within ferro-concrete rooms (basements, superstructures), the 
received signal is naturally weakened. In extreme cases, please 
place the unit close to a window and/ or point its front or back 
towards the Fort Collins, Colorado, transmitter. 

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During nighttime, the atmospheric disturbances are usually less 
severe and reception is possible in most cases. A single daily 
reception is adequate to keep the accuracy deviation below 1 
second. 

 
Note: On rare occasions, the atomic clock is not able to detect the 
WWVB-signal (disturbances, transmitting distance, etc.); the time can 
be manually set. 
 
Set Time: 
The SET button will move through the program menu. The WAVE/+ or 
DST/- buttons will change a value.  
 
Hold the SET button for 3 seconds and the LCD will flash. 

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12/24-HOUR TIME: 12h or 24h will flash. Press and release the 
WAVE/+ button to select 12-hour or 24-hour time format. Press 
and release the SET button to confirm and continue. 

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HOUR: The hour will flash. Press and release the WAVE/+ button 
to select the hour. Press and release the SET button to confirm 
and continue. 

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MINUTES: The minutes will flash. Press and release the WAVE/+ 
button to select the minutes. Press and release the SET button to 
confirm and continue. 

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YEAR: The year will flash. Press and release the WAVE/+ button 
to select the year. Press and release the SET button to confirm 
and continue. (The year will only show in the program menu). 

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MONTH: The month will flash. Press and release the WAVE/+ 
button to select the month. Press and release the SET button to 
confirm and continue. 

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DATE: The date will flash. Press and release the WAVE/+ button 
to select the date. (The weekday will set automatically). Press and 
release the SET button to confirm and exit. 

 
Other Settings:  begin from normal time display. 
 

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DST: Hold the DST/- button for 3 seconds to turn DST on or off. 
When it is on you will see the DST icon 

 

appear in above the 

seconds. 
 

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FAHRENHEIT/CELSIUS: Hold the °C /°F button for 3 seconds to 
display the indoor temperature in Fahrenheit or Celsius. 
 

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TIME MODE/ALARM MODE: Press and release the SET button 
one time to switch from Time Mode to Alarm Mode. In Alarm 
Mode, the letters AL will show in the seconds display. 

 
Set Alarm Time: Press and release the SET button once to enter 
Alarm Mode. The letters AL will show in the seconds display. 
 

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HOUR: Hold the SET button for 3 seconds. The hour will flash. 
Press and release the WAVE/+ button to select the hour. Press 
and release the SET button to confirm and continue.