2
Notes:
The minutes and seconds of the digital clock cannot be manually set. It will
receive the WWVB time from the analog clock.
The time format is fixed to "12-hr" time display. "PM" will be shown in hours from
noon to midnight.
The calendar will also be updated once the WWVB signal from the analog clock
has been received.
This feature allows you to display a 2nd time from anywhere in the world.
The world time can be manually adjusted by 1 hour increments (24 hour time zone).
1. Press the Time Set key to enter world time setting.
2. Press the Time Set key again to set the desired world time. Each key press will
increase the world time by 1 hour.
Notes:
Once the WWVB signal has been received by the digital clock, the manually
adjusted world time will be updated.
If a world time has been manually set prior to reception of the WWVB time, the
time in the digital clock will change correspondingly with the analog clock.
The calendar (month/day) will not follow the set world time; it can only be updated
from the WWVB signal.
When DST changes, the digital and analog times will set ahead or back one hour
in accordance with the NIST signal. To maintain proper World Time, you may
have to manually adjust the hour.
CHANGING THE DISPLAY MODE (Indoor Temperature, Date, Weekday, World Time, Seconds) There are 4 possible display modes to view the indoor, month & day, weekday, world
time, seconds.
The month & day / indoor temperature is the default display.
1. Press the Display key once. The display will show the month & day / weekday.
2. Press the Display key a second time. The display will show the world time / indoor
temperature.
Note: The indoor temperature can only be displayed in Fahrenheit. The
temperature range is from 14.2ºF to 103.8ºF with 0.2ºF resolution. The
temperature is updated every 20 seconds.
3. Press the Display key a third time. The display will show the world time / seconds.
4. Press the Display key a fourth time. The display will return to the default display.
Note: If the Display key is pressed during the initial set-up of the of analog clock. The
date and world time sections will not be shown in the different display modes.
LOW BATTERY ICON When the battery of the digital clock needs to be replaced, the low battery icon will
appear on the LCD section of the digital clock.
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 (to go back one hour) in the fall.
ARIZONA If you live in an area that does not recognize DST you must press the (unmarked) DST
button for one second to deactivate your clock’s DST program. To reactivate the DST
program simply press the DST button again for one second.
Q. Will the digital World Time display also set ahead or back one hour for DST?
A. Yes, if you have DST set to “ON”. (By default DST is set to “ON”.) If the digital World
Time display is set to a foreign time zone for a country that has not adopted the
same DST dates, you will need to manually set the LCD.
Q. How long will the battery last?
A. A good AA alkaline battery will last over one year. If your clock is located in an area
with little interference where it can quickly receive a signal the battery can last much
longer than one year.
Q. Can this La Crosse Technology® clock be used outdoors?
A. No. Outdoor use is not recommended for this clock.
Q. Can the La Crosse Technology® atomic clock be wired to control timing circuits?
A. No.
The wonderful advantage of owning a La Crosse Technology® atomic clock is that it is
virtually trouble free. If the clock receives a clear signal it will set itself perfectly.
Battery The La Crosse Technology® atomic clock must have a fresh battery to
receive and process the time signal.
Location Try a different location, ideally near a window. It should be at least six feet
from computers, TVs, air conditioners, other atomic clocks and other
electrical appliances that cause interference.
Weather Electrical storms between you and Colorado can interfere with the WWVB
signal.
It is not uncommon for the clock to make a "correction", sometimes daily. This happens
if the clock gets ahead of itself by a fraction of a second. To correct this, the clock will
advance a complete rotation the next time it receives a signal.
This product is warranted to be free of defects in manufacturing for 1 year after
purchase. Defective clocks should be returned to the place of retail purchase.
For best performance, batteries should be replaced at least once a year to maintain the
best running accuracy. Ensure that the batteries used are new and the correct size.
Please help in the preservation of the environment and return used
batteries to an authorized depot.
La Crosse Technology®, Ltd provides a 1-year limited warranty on this product against
manufacturing defects in materials and workmanship.
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.
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.
Your La Crosse Technology®, Ltd warranty covers all defects in material and workmanship with
the following specified exceptions: (1) damage caused by accident, unreasonable use or
neglect (including the lack of reasonable and necessary maintenance); (2) damage occurring
during shipment (claims must be presented to the carrier); (3) damage to, or deterioration of,
any accessory or decorative surface; (4) damage resulting from failure to follow instructions
contained in your owner’s manual; (5) damage resulting from the performance of repairs or
alterations by someone other than an authorized La Crosse Technology®, Ltd authorized
service center; (6) units used for other than home use (7) applications and uses that this
product was not intended or (8) the products inability to receive a signal due to any source of
interference.
This warranty covers only actual defects within the product itself, and does not cover the cost of
installation or removal from a fixed installation, normal set-up or adjustments, claims based on
misrepresentation by the seller or performance variations resulting from installation-related
circumstances.
LA CROSSE TECHNOLOGY®, LTD WILL NOT ASSUME LIABILITY FOR INCIDENTAL,
CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE
OPERATION OR MALFUNCTION OF THIS PRODUCT. THIS PRODUCT IS NOT TO BE
USED FOR MEDICAL PURPOSES OR FOR PUBLIC INFORMATION. THIS PRODUCT IS
NOT A TOY. KEEP OUT OF CHILDREN’S REACH.
This warranty gives you specific legal rights. You may also have other rights specific to your
State. Some States do no allow the exclusion of consequential or incidental damages therefore
the above exclusion of limitation may not apply to you.
For warranty work, technical support, or information contact: La Crosse Technology®, Ltd
2817 Losey Blvd S. La Crosse, WI 54601 www.lacrossetechnology.com/support
All rights reserved. This handbook must not be reproduced in any form, even in excerpts, or
duplicated or processed using electronic, mechanical or chemical procedures without written
permission of the publisher.
This handbook may contain mistakes and printing errors. The information in this handbook is
regularly checked and corrections made in the next issue. We accept no liability for technical
mistakes or printing errors, or their consequences.
All trademarks and patents are acknowledged.
Month & day / Weekday
World time / Indoor temperature
Month & day / Indoor temperature
World Time / Seconds
EJMA3128L210
Printed in China