Datexx EXACTIME RC171W - Manual (Page 2)

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WWVB RADIO CONTROLLED TIME
The NIST (National Institute of Standards and
Technology) radio station (WWVB) is located in Ft.
Collins, Colorado. It transmits an exact time signal
continuously throughout the most of the continental
United States at 60 KHz frequency. The Travel Alarm
Clock can receive this WWVB signal through the
internal antenna from up to 2,000 miles away. Due to
the nature of the Earth’s ionosphere, reception can be
limited during the daylight hours. The radio controlled
clock will search for an alternate station that receives
the atomic time signal from the NIST Atomic clock in
Boulder, Colorado.
The WWVB tower icon on the unit’s display will flash
indicating a radio signal reception from the WWVB
station. If the tower icon is not fully lit, or if the time
and date are not set automatically, please consider the
following:
* During night-time hours, atmospheric disturbances
are typically less severe and radio signal reception
may improve. A single daily reception is sufficient
enough to keep the clock accuracy within 1 second.
* Make sure the unit is positioned at 8 feet (2 meters)
distance from any interference source such as a TV,
computer monitor, microwave, etc.
* Within concrete wall rooms such as basements or
office buildings, the received signal may be weakened.
Always place the Table Alarm Clock near the
window for better reception.
B. ALARM 1 & ALARM 2 BUTTONS
* Select and set Alarm One and Alarm Two
* Recall current alarms status
C. MODE BUTTON
* Allows toggle between display modes (Alarm1,
Alarm2 and Temperature)
* Activates manual programming mode
* Activates or deactivates the atomic time receiver
D. UP ( ) BUTTON
* Increases all function parameters
* Selects 12 or 24 hour time display format
* Activates US Time Zone selection mode
E. DOWN ( ) BUTTON
* Decreases all function parameters
* Sets the language for the day of the week
F. SNOOZE/LIGHT BUTTON
* Activates snooze function and LCD backlight
REAR VIEW
G. BATTERY COMPARTMENT
* Accommodates 2 (two) AAA 1.5V alkaline batteries.
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MANUAL SETTINGS
TIME ZONE
* Select the Time Zone by pressing and
holding the UP ( ) button for 3 seconds.
* Keep holding UP ( ) button until the
desired time zone (Pacific, Mountain,
Central or Eastern) is highlighted on
the clock’s display map.
CLOCK
* Press and hold MODE button for 3
seconds: the year digit will flash.
* Press UP ( ) or DOWN ( ) to
change flashing digits.
* After the first value is set, press
MODE button again to confirm and
move to the next parameter.
* Continue setting month, date, hour,
minutes and temperature display
format.
* Press MODE button for the last
time to return to the time of day
with seconds, after the last
parameter is set.
PM
DATE MONTH
PM
DATE MONTH
PM
DATE MONTH YEAR
PM
DATE MONTH
PM
DATE MONTH
PM
DATE MONTH
PM
DATE MONTH
PM
DATE MONTH
GETTING STARTED
BATTERY INSTALLATION
* Open the battery compartment door.
* Install 2 battery AAA size 1.5V matching the polarity
as shown in the battery compartment.
* Replace the battery compartment door.
RADIO CONTROLLED CLOCK
After installing batteries, set the time manually.
ONE TIME SET is needed ONLY when first used.
The clock will update the time automatically afterwards.
Once the atomic time signal is received, the date and time
will be set automatically, and the [ ] icon will appear.
After the clock is set manually, place it by the window for
the better reception. The atomic clock receiver is
programmed that it will continue to search for the atomic
time signal daily for every hour between 1:00 am and
4:30 am. Once the time signal has been successfully
received, the time and date will be updated automatically.
CALENDAR AND CLOCK DISPLAY MODES
Precise time is displayed in hour-
minutes-seconds format on the top
ine of the Atomic Alarm Clock.
The date is displayed in month-date
format on the bottom line next to the
day of the week.
PM
DATE MONTH
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