La Crosse Technology WT-3181 Bedienungsanleitung
Model: WT-3181 www.lacrossetechnology.com/support Page | 1
Model: WT-3181
Instruction Manual
DC: 082015
18” Indoor/Outdoor Atomic Wall Clock
Get Started
Step 1: Remove the round battery cover from the back of the clock.
Step 2: Insert 1 fresh AA, LR6 1.5 volt ALKALINE battery according to
the polarity marked on the case. Replace the battery cover.
Step 2: Firmly press the time zone button once.
Step 3: Position the clock on an exterior wall that faces Ft. Collins,
Colorado. During the night, your clock will automatically set itself.
Note: The hands will move to the 12:00, 4:00 or 8:00 position and search
for the radio signal. If the radio signal is received the time will set. If the
signal is not received the clock will stay at the 12:00, 4:00 or 8:00
position and search for the WWVB time signal on the even hours. Once
the radio signal is decoded, the hands will automatically adjust to the
correct time. This may take up to 5 nights.
Step 4: The default time zone is Pacific Time. If the clocks sets itself and
the hours are off, hold the correct time zone button for 5 seconds
to correct.
Position Clock
Indoor: For the best reception, please place clock on a wall that
faces Ft. Collins, Colorado. The antenna is best positioned for signal
reception when there is only one wall or window between the clock
and outside.
Round
Battery
Cover
Model: WT-3181 www.lacrossetechnology.com/support Page | 2
Central Time
Choose a location 6 feet or more from electronics such as cordless
phones, wireless gaming systems, televisions, microwaves, routers,
baby monitors, etc., which can prevent signal reception.
Large office buildings, schools, or hospitals may not receive the
WWVB time signal in every room.
Buildings with a metal roof may interfere with reception.
Note: We recommend that you change the battery every 24 months to
maintain accuracy. Remove the battery when the clock will not be in use
for an extended period.
Outdoor: Choose a location with an overhang to protect the clock
from the overhead sun or standing snow or rain.
A shaded location will prevent inaccurate temperature readings.
Mount the clock on a wall with the hanging hole on the back of the
clock. Be sure the battery cover is on snug.
Manual Set Time
On rare occasions in certain areas, the clock may not be able to receive
the radio controlled time signal due to 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.
Note: Allow up to five nights for the clock to receive the WWVB signal
before manually setting the time.
Set the clock manually:
1. Remove battery for 15 minutes.
2. Press the Manual Set Tab 20 times.
3. After 15 minutes, insert the battery and allow the clock to spin to
12:00, 4:00 or 8:00.
Battery
Compartment
1-“AA”
Alkaline
Eastern
Time
DST ON/OFF
Button
Mountain Time
Pacific
Time
Manual
Set Tab
Model: WT-3181 www.lacrossetechnology.com/support Page | 3
4. Hold the Manual Set Tab and the hand will spin. Continue holding
until the correct time is achieved.
Note: You can only set the clock manually for about 2 minutes after
the battery is inserted. If the clock receives the WWVB time signal,
this signal will override manually set time.
Temperature and Humidity
The La Crosse Technology® atomic wall clock has two analog sensors
that measure surrounding temperature and humidity. The temperature
information is displayed in degrees Fahrenheit and Celsius, and humidity
data is displayed in percentage.
The thermometer and hygrometer have been calibrated at the factory.
To check the sensors accuracy, tune to your local weather forecast
information broadcast for the latest weather information. The sensors
may be adjusted.
To manually adjust the sensors, use a flat tipped screwdriver to gently
turn the temperature or humidity sensor screw at the back of the clock
until desired setting has been reached.
Daylight Saving Time
The National Institute of Standards and Technology and WWVB encode
a special DST “bit” in the WWVB transmission for DST. Your clock will
read this information and automatically advance the hands one hour in
the spring and eleven hours in the fall.
If you do not observe DST, press the DST button one time to turn OFF.
Outer ring
displays
temperature
in degree
Fahrenheit
Inner ring
displays
temperature
in degree
Celsius
Humidity
display
in %
Calibration
screw for
thermometer
Calibration
screw for
hygrometer
Model: WT-3181 www.lacrossetechnology.com/support Page | 4
Manual WWVB Time Signal Search
For information about WWVB, visit:
www.nist.gov/pml/div688/grp40/wwvb.cfm
Signal Interference:
In some cases, the signal is affected by weather conditions and electrical
interferences, or the location of the 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 need to move the clock to a different
location.
Frequently Asked Questions
Q. How long will the battery last?
A. A good AA alkaline battery will last over 12 months.
Q: Can I shut off the WWVB signal?
A: No. If you manually set the time, when the clock receives a WWVB
signal, that signal will override the manual set.
Q: Is there a booster antenna to receive the WWVB signal in a
difficult location?
A: No, the clock cannot work with a booster antenna. Opening the clock
or movement voids the warranty.
Q: Can I wire a control timing circuit to the La Crosse Technology®
atomic clock?
A: No, the clock cannot work on a timing circuit. Opening the clock voids
the warranty.
Q: Why do the hands spin?
A: When the hands spin about the same time every day the clock is
auto-correcting the time. The hour hand should not spin more than
twice around the clock.
A: Hands may spin if the battery is under powered or over powered. Use
only Alkaline batteries in the clock.
Q: How do I adjust the Temperature or Humidity?
A: Use a flat tipped screwdriver to gently turn the temperature or
humidity sensor screw at the back of the clock, until desired setting
has been reached.
Troubleshooting
The wonderful advantage of owning a radio-controlled clock is that it is
virtually trouble free. If the clock receives a clear time signal, it will set
itself perfectly. If it does not receive a time signal, consider the following:
Battery: The clock must have a fresh battery to receive and process
Model: WT-3181 www.lacrossetechnology.com/support Page | 5
the time signal.
Location: Try a different location, ideally near a window. Your clock
should be at least six feet from computers, TVs, air conditioners,
other radio-controlled clocks and other electrical appliances that
cause interference.
Weather: Electrical storms between you and Colorado during the
night will interfere with the WWVB signal.
Care and Maintenance
Do not mix old and new batteries
Do not mix Alkaline, Standard, Lithium or Rechargeable
Batteries
Always purchase the correct size and grade of battery most suitable
for intended use.
Replace all batteries of a set at the same time.
Clean the battery contacts and also those of the device prior to
battery installation.
Ensure the batteries are installed with correct polarity (+and -).
Remove batteries from equipment with is not to be used for an
extended period of time.
Remove expired batteries promptly.
Warranty and Support Information
La Crosse Technology, Ltd. provides a 1-year limited time warranty (from
date of purchase) on this product relating to manufacturing defects in
materials & workmanship.
View full warranty details online at:
www.lacrossetechnology.com/warranty_info.pdf
For warranty work, technical support or other information contact:
La Crosse Technology, Ltd
2830 26th Street S.
La Crosse, WI 54601
Contact Support:
1-608-782-1610
Product Registration:
www.lacrossetechnology.com/support/register
Online Product Support:
www.lacrossetechnology.com/support
Model: WT-3181 www.lacrossetechnology.com/support Page | 6
FCC Statement
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
This device must not be co-located or operating in conjunction with any
other antenna or transmitter.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including
interference that may cause undesired operation.
Caution!
The manufacturer is not responsible for any radio or TV interference
caused by unauthorized modifications to this equipment. Such
modifications could void the user authority to operate the equipment.
All rights reserved. This manual may not be reproduced in any form,
even in part, or duplicated or processed using electronic, mechanical or
chemical process without the written permission of the publisher.
This booklet may contain errors or misprints. The information it contains
is regularly checked and corrections are included in subsequent editions.
We disclaim any responsibility for any technical error or printing error, or
their consequences.
All trademarks and patents are recognized.
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