La Crosse Technology Clock WT 3126H User Manual

are two ways to move the minute hand forward. Hold the SET button  
down to move the minute hand forward consistently. Or, press the SET  
button rapidly (more than once per second) to move the minute hand  
forward step by step (in minute increments). Use these features to move  
the minute hand forward until the correct time is set. The clock will  
automatically leave manual mode after the SET button is not pressed for  
6+ seconds.  
Through the radio signals, La Crosse Technology atomic clocks always keep  
precise time. The changeover from standard time to daylight saving time, and  
vice versa, takes place automatically with the same precision.  
The La Crosse Technology atomic clock is designed for indoor use. For  
indoor locations, select a location to place your radio controlled clock where it  
will be at least six feet away from a TV, computer, air conditioner or other  
household electrical appliances. The optimal location is near a window.  
Windows facing Colorado provide the best signal.  
Reset: If the clock does not respond to the various function modes, you  
can reset the clock by pressing the RESET button on the movement  
case.  
WT-3126H  
Notes:  
Do not submerge clock in water.  
Radio Controlled Analog Clock  
Extreme temperatures, vibration, and shock should be avoided to  
prevent damage to the clock.  
Internal Synchronization: Once the clock has been set correctly by the  
radio signal, the clock’s CPU operates continuously. To ensure  
accuracy, the clock synchronizes the position of the second and minute  
hands to the time calculated by the CPU every day. Second hand  
synchronization occurs at 1:30 a.m. and 9:30 a.m. and minute hand  
synchronization occurs between 1:50 and 2:01 am every day.  
Quick Setup Instructions  
The WWVB time signal will easily penetrate masonry and wood framed  
buildings. The WWVB signal will penetrate almost every residential building  
and most steel buildings if they have adequate windows. It is not possible,  
however, for the WWVB signal to penetrate most indoor shopping malls and  
rooms in the center of large office buildings that do not have windows. In  
buildings that WWVB cannot penetrate you may set the time using the manual  
time set button. When the clock receives the WWVB signal it will  
automatically set the hands to the exact time.  
Welcome to the world of atomic timekeeping technology. We hope you will  
enjoy the convenience of never having to set your clock again and the  
confidence of knowing exactly what time it is.  
Signal Interference: In some cases, the signal can be affected by  
weather conditions and electrical interferences, or the location of the  
A locking pin may be placed into the movement at the factory to prevent  
shifting of the hands during shipment. Remove the locking pin directly  
below the Reset button. This will unlock the hands and enable the clock  
to set itself after receiving the signal.  
Set the clock to your time zone by moving the indicator arrow to  
appropriate zone: P (UTC-8 Pacific Time), M (UTC-7 Mountain Time), C  
(UTC-6 Central Time), E (UTC-5 Eastern Time)  
clock itself may result in poor reception.  
If the clock has not  
synchronized to the correct time within a few days of activation, you may  
wish to move the clock to a different location. Try to place it near an  
outside wall closest to the direction of Colorado. Avoid placing the clock  
near electrical items such as TVs, microwave ovens and computers.  
La Crosse Technology atomic clocks do not receive or process radio  
controlled time signals from Germany’s DCF 77, Japan’s J Ga AS, or  
England’s MSFs atomically regulated transmitters. La Crosse  
Technology atomic clocks can be manually set and used anywhere.  
Please Note: WWVB time will over ride a manual setting.  
Enable the Daylight Savings Time Auto Adjust feature by moving the  
DST switch to “ON”. If you are in a time zone that does not follow DST,  
make sure you set the DST mode to “OFF”. The Daylight Savings Time  
feature is disabled when the switch is set to “OFF”.  
For more information on the NIST and radio controlled time, see  
SET BUTTON  
WAVE BUTTON  
RESET BUTTON  
DAYLIGHT SAVING TIME  
Insert 1 new AA, LR6 1.5 volt ALKALINE battery in the analog clock  
battery compartment according to the polarity marked on the case.  
The National Institute of Standards and Technology and WWVB encode a  
special DST “bit” in the WWVB transmission for DST. Your La Crosse  
Technology clock will read this information and automatically advance the  
hands one hour in the spring and eleven hours in the fall.  
BATTERY  
COMPARTMENT  
Once the battery is installed, the radio reception mode is activated and  
the second, minute and hour hands will automatically reset to the 12:00  
position. Once the hands are in the 12:00 position, the movement will  
start searching for the radio signal. The search procedures takes  
approximately 3 to 10 minutes after all hands have set to the 12:00  
position. If a signal is found within the first 3 to 10 minutes, the clock will  
set to the correct time. If the clock does not receive a radio signal soon  
after activated, the clock will start running from the 12:00 position and  
will continue to run. In this case, do not attempt to reset the hands  
manually even though the time displayed on the clock is incorrect. The  
clock is synchronizing to the WWVB signal and once the radio signal is  
decoded, the hands will automatically adjust to the correct time.  
TIME ZONE SWITCH  
WARRANTY  
La Crosse Technology, Ltd provides a 1-year limited warranty on this product  
against manufacturing defects in materials and workmanship.  
DST ON/OFF BUTTON  
This limited warranty begins on the original date of purchase, is valid only on  
products purchased and used in North America and only to the original  
purchaser of this product. To receive warranty service, the purchaser must  
contact La Crosse Technology, Ltd for problem determination and service  
procedures. Warranty service can only be performed by a La Crosse  
Technology, Ltd authorized service center. The original dated bill of sale must  
be presented upon request as proof of purchase to La Crosse Technology, Ltd  
or La Crosse Technology, Ltd’s authorized service center.  
NOTHING IS MORE PRECISELY MEASURED THAN TIME!  
Since the beginning of time, man has been fascinated with the measurement  
of time and has devised more accurate machines to trap and measure time.  
Today, time is precisely measured in the United States by the most accurate  
clock in North America, the Atomic Clock of the US National Institute of  
Standards and Technology, Time and Frequency Division in Boulder,  
Colorado. A team of atomic physicists continually measures 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 radio transmitter located in Fort Collins, Colorado,  
where the exact time signal is continuously broadcast throughout the United  
States at 60 kHz to take advantage of stable long wave radio paths found in  
that frequency range. Radio waves at these low frequencies use the earth  
and the ionosphere as a wave-guide and follow the curvature of the earth for  
long distances.  
The WAVE button can be used to attempt an enforced signal receipt.  
To activate, hold the WAVE button down for 3+ seconds. Once the  
WAVE feature is activated, the hands will automatically reset to the  
12:00 position, and the movement will attempt to enforce a signal receipt  
from Fort Collins, CO. If the movement successfully receives the signal,  
the clock will reset automatically to the correct time. Generally, the  
signal enforced receipt takes approximately 3-8 minutes. If the clock still  
fails to receive the signal while in the WAVE mode, the clock will  
automatically leave the WAVE mode. In this case, set the clock  
manually according to instructions below and the time keeping function  
will be controlled by the movement’s micro-CPU.  
La Crosse Technology, Ltd will repair or replace this product, at our option and  
at no charge as stipulated herein, with new or reconditioned parts or products  
if found to be defective during the limited warranty period specified above. All  
replaced parts and products become the property of La Crosse Technology,  
Ltd and must be returned to La Crosse Technology, Ltd. Replacement parts  
and products assume the remaining original warranty, or ninety (90) days,  
whichever is longer. La Crosse Technology, Ltd will pay all expenses for labor  
and materials for all repairs covered by this warranty. If necessary repairs are  
not covered by this warranty, or if a product is examined which is not in need  
or repair, you will be charged for the repairs or examination. The owner must  
pay any shipping charges incurred in getting your La Crosse Technology, Ltd  
product to a La Crosse Technology, Ltd authorized service center. La Crosse  
Technology, Ltd will pay ground return shipping charges to the owner of the  
product to a USA address only.  
The built in antenna system will receive the WWVB signal anywhere in North  
America within 2000 miles of Fort Collins where long-wave radio reception is  
undisturbed. A microprocessor activates the receiver and processes the time  
signal from Fort Collins overnight.  
Manual Set: On rare occasions in certain areas, the clock may not be  
able to utilize the radio-controlled function because of either the strength  
of the signal or the geographic location. In this case, the clock can be  
set manually and used as a regular quartz wall clock. If it is necessary  
to set the clock manually, press and hold the SET button for 3+ seconds  
to activate the manual mode. Once the clock is in manual mode, there  
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