TABLE OF CONTENTS
Topic
Page
Inventory of Contents/ Additional Equipment
3
About WWVB
3
Quick Set-Up Guide
3
Detailed Set-Up Guide
Battery Installation
4
Program Mode
Function Buttons
6
Time Zone Setting
6
DST (Daylight Saving Time) Setting
6
Time Setting
7
Calendar Setting
7
Selecting ˚F or ˚C
8
Features & Operations
Displaying the Seconds
8
Indoor Temperature
9
Mounting
9
Maintenance & Care
10
Troubleshooting
11
Specifications
12
Warranty Information
12
INVENTORY OF CONTENTS
1. WS-9412U
2. Instruction manual and warranty card.
ADDITIONAL EQUIPMENT (not included)
1. Two fresh 1.5V AAA batteries.
2. One wall-hanging screw.
3. Appropriate screwdriver for screw.
ABOUT WWVB (Radio Controlled Time)
The NIST (National Institute of Standards and Technol-
ogy-Time and Frequency Division) WWVB radio station
is located in Ft. Collins, Colorado, and transmits the ex-
act time signal continuously throughout the United States
at 60 kHz. The signal can be received up to 2, 000 miles
away through the internal antenna in the Atomic Clock.
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 is continually measuring
every second, of every day, to an accuracy of ten bil-
lionths of a second per day. These physicists have cre-
ated 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.
QUICK SET-UP GUIDE
1. Insert two AAA batteries into the Atomic Clock.
2. Wait 15 minutes for WWVB reception.
3. If there is no WWVB reception, manually set the time
and date (instructions in the Program Mode).
4. Program the settings.
5. Mount the WS-9412U in a suitable location, where
WWVB signals can be received.
DETAILED SET-UP GUIDE
I. BATTERY INSTALLATION
Note: To avoid start-up problems make sure that the bat-
teries do not spring free.
A. ATOMIC CLOCK
1. Remove the battery cover, located on the backside
of the function buttons.
2. Observe the correct polarity, and install 2 AAA
batteries.
3. Replace the battery cover.
Note: After the batteries have been installed all the LCD's
(Liquid Crystal Display) will briefly light up. Then the
indoor temperature, the date as "1/ 1" and the weekday
as "MON" will be displayed. Also, the time will appear
as "-:--" for approximately 1 minute. Then the WWVB
search is automatically initiated, and a tower icon ap-
pears and flashes with the time colon (no tower icon will
appear if the WWVB is too weak to be detected). While
the WWVB search is being conducted various numbers
will appear in the time display. The numbers "0", "1", or
"8" will appear in the hour position and the seconds will
appear in the minute display. The Atomic Clock will ei-
ther display the WWVB time, or discontinue the search
after 10 minutes if the time is not found. When the search
is cancelled "-:--"will appear in the time LCD. The Atomic
Clock will conduct a WWVB search every hour until the
first signal is found. Once the WWVB time is found, a
search is automatically conducted nightly at midnight. If
the signal is found at midnight, the tower icon will remain,
if not, another search will take place every hour (up to 6:
00 am) until the signal is found successfully. If no signal
is found during this period, the tower icon will not appear
and the clock will search again at 12:00 am the next night.
PROGRAM MODE
To enter the Program Mode hold down the "SET" button
for 2 seconds, until the time zone flashes in the Date
LCD. The Program Mode is laid out in a manner that
allows you to program each function separately, or you
can follow the instructions entirely to program the Atomic
Clock. Complete programming is usually done for the
initial set-up, and will require you to skip step 1 of pro-
gramming sections III through VI. Wait approximately
15 seconds for the Atomic Clock to automatically return
to normal operation after completing the final step.
GB
P.2
GB
P.3
GB
P.4
GB
P.5
Battery Compartment
Battery Cover
WWVB Tower Icon
Month/Date
Weekday
Indoor
Temperature
