La Crosse Technology WS-6003U User Manual

WS-6003U

Atomic Clock

Instruction Manual

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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 5
Time Zone Setting 6
DST (Daylight Saving Time) Setting 6
Language Selection 7
Time Setting 7
Calendar Setting 7-8
12/24-Hour Setting 8
Selecting °F or °C
Features & Operations
Displaying the Seconds 9
Mounting 9-10
Maintenance & Care 10
Troubleshooting 11
Specifications 12
Warranty Information 12

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INVENTORY OF CONTENTS

1) WS-6003U

2) Instruction manual and warranty card.

ADDITIONAL EQUIPMENT (not included)

1) Two fresh 1.5V AA batteries.

2) Three wall-hanging screws.

3) Appropriate screwdriver for screws.

ABOUT WWVB (Radio Controlled Time)

The NIST (National Institute of Standards and Technology—Time and Frequency
Division) WWVB radio station is located in Ft. Collins, Colorado, and transmits the exact
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, recept i on 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 billionths of a second per 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.

QUICK SET-UP GUIDE

1) Insert two AA 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-6003U 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
batteries do not spring free.

Battery Cover

A) ATOMIC CLOCK

SET

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Battery Compartment

1) Remove the battery cover, located on the backside of the unit and directly

y

t

above the function buttons.

2) Observe the correct polarity, and install 2 AA 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 appears 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 either 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.

WWVB Tower

Month/Da

Weekda

Indoor

PROGRAM MODE

To enter the Program Mode hold down the “SET” button for 2 seconds, until “-5EST”
flashes in the Date LCD. The Program Mode is laid out in a manner that allows you to

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