Chaney and AcuRite atomic clocks use a radio-controlled signal to
synchronize to the correct time broadcast by the National Institute
of Standards and Technology (NIST) Radio Station WWVB,
located near Fort Collins, Colorado. WWVB broadcasts the
current time and date with split-second accuracy.
Atomic clocks set themselves and automatically adjust for daylight
saving time to provide the most accurate timekeeping standard
possible.
Introduction
Manual setup allows you to set the clock without the atomic
signal. After manual setup, the clock will continue to search for
the atomic signal.
• Press and hold the “M.SET” button (C) for 3 seconds. The
clock will be in manual time set mode.
• Press the “M.SET” button to advance the time by 1 minute.
• Press and hold the “M.SET” button to quickly advance the
hour and minute hands.
• Press the REC button (D) to exit manual time set mode.
• If no button is pressed for 3 minutes you will automatically
exit manual time set mode.
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1
Overview
SETUP
1. Locate the Time Zone Switch (E) on the back of the clock.
The switch has four time zone indicators: P, M, C & E
(P=Pacific, M=Mountain, C=Cental, E=Eastern). Move the
switch to select your time zone.
2. Slide the “DST” switch (F) to the ON position to allow the
clock to automatically set itself for daylight saving time (DST).
On the Spring and Fall DST dates, at 2:00 am, the clock will
adjust itself until the correct time is reached. If you live in an
area that does not observe daylight saving time and do not
want the clock to change, place the “DST” switch in the
“OFF” position.
3. Find a suitable location for your clock. For the best possible
reception, place the clock with the back side facing
Colorado.
The atomic signal can be impacted by weather conditions,
electrical interference and solar conditions. Although atomic
clocks can work in most locations, the number of times they
sychronize with the atomic signal depends on suitable clock
placement. Signal reception is especially important for
automatic daylight saving time updates, which can be
delayed from poor signal reception.
4. Insert one fresh 1.5 volt “AA” battery in the battery
compartment (A) to power on the clock .
5. After the battery is inserted, the second hand will move
clockwise to the
12:00 position. Within 5 minutes the hour
and minute hand will also move to the
12:00
standby
position. The clock will then search for the atomic signal. If
the signal in your area is strong, the clock will set itself within
3-12 minutes. NOTE: Due to solar radiation in the
atmosphere, a radio controlled clock signal is weaker during
the day. Most synchronization with the atomic signal happens
at night when there is less interference.
Setup Is Now Complete
Once the atomic signal has been received by the clock, the
minute hand will advance or slow down as necessary until the
clock sets itself to the correct time.
SETUP
MANUAL SETUP
