La Crosse WT-3181PL Manuel utilisateur

Model: WT-3181PL www.lacrossetechnology.com/support Page | 1

Model: WT-3181PL

Instruction Manual

DC: 041614

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: 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.

Round

Battery

Cover

Model: WT-3181PL www.lacrossetechnology.com/support Page | 2

Central Time

Position near an exterior wall that faces Ft. Collins, Colorado for

WWVB time signal reception.

The antenna is available for signal reception when the front or back

of the clock faces Colorado.

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 and press the Manual Set Tab 20

times.

2. After 15 minutes, insert the battery and allow the clock to spin to

12:00, 4:00 or 8:00.

3. 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,

Battery

Compartment

1-“AA”

Alkaline

Eastern

Time

DST ON/OFF

Button

Mountain Time

Pacific

Time

Manual

Set Tab

Model: WT-3181PL www.lacrossetechnology.com/support Page | 3

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.

Arizona

If you live in an area that does not recognize DST, you must press the

DST button one time only 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-3181PL 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: Is there a version of analog clock with more than the four

continental US times zones?

A: La Crosse Technology® does not make an analog clock with more

than four time zones. These time zones are PT (Pacific Time), MT

(Mountain Time), CT (Central Time), and ET (Eastern Time).

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.

Model: WT-3181PL www.lacrossetechnology.com/support Page | 5

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

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

Do not expose to extreme temperature, vibration or shock.

Clean with a soft damp cloth. Do not use solvents.

The product is not a toy. Keep it out of reach of children.

The product is not to be used for medical purpose or for public

information. It is intended for home use only.

The specs of this product may change without prior notice.

Improper use or unauthorized opening of housing voids warranty.

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

Model: WT-3181PL www.lacrossetechnology.com/support Page | 6

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/3181pl

FCC Statement

This Device complies with Part 15 of the FCC Rules. Operation is subject

to the following two conditions: (1) This device may not cause harmful

interference, and (2) the device must accept any interference received,

including interference that may cause undesired operation.

NOTE: 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

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.

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