La Crosse WS-8157U User Manual

WS-8157U

RADIO-CONTROLLED CLOCK WITH OUTDOOR WIRELESS

TEMPERATURE

Instruction Manual

RADIO-CONTROLLED CLOCK WITH OUTDOOR WIRELESS

WS-8157U

INSTRUCTION MANUAL

TABLE OF CONTENTS

Glossary of Common Terms………………………………………………………………………….2
Features…………………………………………………………………………………………………..3

Batteries: Installation and Replacement…………………………………………………………..4

Setting-Up………………………………………………………………………………………………..5

Function Keys………………………………………………………………………………………..5-6
LCD Screen Descriptions……………………………………………………………………………..6
Weather Forecast…………………………………………………………………………………….6-7

Weather Tendency Icons………………………………………………………………………………7

Manual Settings……………………………………………………………………………………..7-11

LCD CONTRAST…………………………………………………………………………………………8

TIME ZONE……………………………………………………………………………………………….8
DST ON/OFF……………………………………………………………………………………………..8

TIME RECEPTION ON/OFF……………………………………………………………………………9

LANGUAGE DISPLAY…………………………………………………………………………………..9

12/24 HOUR TIME DISPLAY…………………………………………………………………………..9
°C OR °F TEMPERATURE……………………………………………………………………………..9
MANUAL TIME……………………………………………………………………………………….9-10

YEAR, MONTH, AND DATE……………………………………………………………………..10-11

Changing the Display Mode…………………………………………………………………………11
Alarm: Activation and Deactivation………………………………………………………… ...11-12
Outdoor Temperature Transmitter……………………………………………………………..12-13
Positioning………………………………………………………………………………………….13-15
Troubleshooting……………………………………………………………………………………….16
Care and Maintenance………………………………………………………………………………..17
Specifications……………………………………………………………………………………… ….17
Warranty and Contact Information……………………………………………………………..18-20

1

Page

GLOSSARY OF COMMON TERMS

NIST*
The National Institute of Standards and Technology maintains the primary frequency standard for the
United States. The NIST also coordinates the United States time and frequency standards with other
world standards. The NIST provides time and frequency services for United States clientele.

WWVB

*
The WWVB is an AM radio station in Ft. Collins, Colorado, managed by the NIST. The WWVB’s
function is to broadcast time-of-day information derived from the NIST atomic clock, located in Boulder,
Colorado.

ATOMIC CLOCK
An atomic clock is an extremely accurate time device measuring time by the movements of electrons in
cesium atoms. The NIST atomic clock is one of the most precise clocks in the world, accurate to 10
billionths of one second. The NIST’s atomic clock contributes to the international group of clocks
calculating the Coordinated Universal Time (UTC)—the official world time.

RADIO CONTROLLED TIME
A radio controlled time device is often confused with an atomic clock. However, a radio controlled time
device receives its time information from the atomic clock each day through an internal antenna. The
radio controlled time device searches for an exact time signal every night when the signal from the
WWVB is the strongest. The signal can be received up to 2,000 miles away through a radio controlled
time device.

LCD
“LCD” is an acronym for ”Liquid Crystal Display”. This is a common type of display screen used in
televisions, computers, watches, and digital clocks.

CELSIUS (°C)
Celsius is metric system’s unit of measurement used to calculate temperature.

FAHRENHEIT (°F)
Fahrenheit is the common unit of measurement used to calculate temperature the United States.

*For more information regarding the NIST, WWVB, atomic clock, and radio controlled time, please visit
the NIST official website: http://www.boulder.nist.gov/timefreq/stations/wwvb.htm

*

*

2

FEATURES:

•

RADIO-CONTROLLED CLOCK:

LCD1
display

LCD2
display

• WWVB Radio controlled time with manual time setting

• Time reception ON/OFF

• 12/24 hour time display

• Time display: hour, minute, second

• Alarm setting with snooze function

• Calendar display

• Weekday display (4 languages to choose from: English, French, Spanish and German)

• Time zone setting

• Daylight savings time ON/OFF option (DST)

• LCD contrast setting

• ºC or ºF temperature display selectable

• Indoor temperature display

• Outdoor temperature display via 433MHz transmission

• Wall mount or freestanding

• Weather forecast for next 12 to 20 hours based on changing air pressure

OUTDOOR TEMPERATURE TRANSMITTER:

Battery Cover

Holder

Remote transmission of

outdoor temperature to the
radio-controlled clock by
433 MHz signals

• Wall mounting case

3

Hanging holes

Function keys
Battery cover

Foldable stand

TO INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE
TRANSMITTER(INSTALL BATTERIES IN TRANSMITTER BEFORE INSTALLING

BATTERIES IN RADIO-CONTROLLED CLOCK)

The transmitter uses 2 x AA,1.5V batteries. To install and replace the batteries, please follow
the steps below:

1. Remove the battery cover by pushing down towards bottom of transmitter and sliding

cover out.

2. Insert the batteries, observing the correct polarity (see marking inside battery

compartment).

3. Replace the battery cover on the unit.
ALKALINE BATTERIES ARE RECOMMENDED FOR USE IN BOTH UNITS. AVOID USING
RECHARGEABLE BATTERIES.

TO INSTALL AND REPLACE BATTERIES IN THE RADIO-CONTROLLED
CLOCK

The radio-controlled clock uses 2 x AA,1.5V batteries. To install and replace the batteries,
please follow the steps below:

1. Insert finger or other solid object in the space at the bottom center of the battery

compartment and lift up to remove the cover.

2. Insert batteries observing the correct polarity (see marking inside battery compartment).

3. Replace compartment cover.

DO NOT SET THE CLOCK.

BATTERIES CHANGE:

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.

4

SETTING-UP:
Alkaline batteries are recommended for use in both units. Avoid using
rechargeable batteries.

NOTE: Do not set-up the clock until the outdoor temperature is displayed.

1. Place batteries in the outdoor transmitter first, then into the radio-controlled clock.

DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.

2. After the 15 minutes both the Indoor and Outdoor areas on your clock should have a

temperature showing. If not, remove both sets of batteries, wait 15 minutes and repeat
step one.

3. After the clock receives the outdoor temperature, set your time zone using the manual

settings below. The default (factory) time zone is Eastern Standard Time.

4. After the clock receives the outdoor temperature the WWVB time code reception will

automatically start. This reception typically takes between 10-15 minutes in good
conditions. If after 15 minutes the WWVB time has not been received, use the “SET” key
to manually enter the set-up mode and change either the time or date in order to activate
the WWVB reception (see manual settings below). The clock will then automatically
attempt to receive the WWVB time from 12:00 am through 6:00 am each day (attempts
WWVB reception every full hour within this time frame). When this is successful, the
received time will override the manually set time. The date is also updated with the
received time (Please refer to notes on “Manual time setting”).

Note:
In the event of changing batteries of the unit, ensure that the batteries do not spring free from
the contacts. Always wait at least 15 minutes after removing the batteries before reinserting,
otherwise start up and transmission problems may occur.

FUNCTION KEYS

The radio-controlled clock has four easy to use keys:

SET key : To enter into the set mode for the following functions: LCD contrast, time

+ key : To toggle between the second, temperature or weekday display

To change any values in manual set mode
ALM key : To enter into the alarm set mode
To set the alarm ON/OFF
SNZ key : To activate the snooze function during alarm

zone, DST ON/OFF (daylight saving time), time reception ON/OFF, language,
12/24 hour, ºC or ºF temperature, hour, minute, year, month and day display

5

To display the alarm time in normal mode display

A

To exit the setting modes

LCD SCREEN DESCRIPTIONS

The radio-controlled clock's LCD is divided into 2 sections and once the batteries are inserted,
all the segments will light up briefly before displaying the information for time, date, indoor and
outdoor temperatures.

WWVB time

Indoor temperature

Date

Radio reception icon

larm icon

Outdoor temperature display

Weekday

WEATHER FORECAST

The weather forecasting feature is estimated to be 75% accurate. The weather forecast is
based solely upon the change of air pressure over time. The WS-8157U averages past air­pressure readings to provide an accurate forecast, creating a necessity to disregard all weather
forecasting for 12-24 hours after the unit has been set-up, reset, or moved from one altitude to
another (i.e. from one floor of a building to another floor). In areas where the weather is not
affected by the change of air pressure, this feature will be less accurate.

Weather Icons

There are 3 possible weather icons that will be displayed in the LCD 2:

Sunny—indicates that the weather is expected to improve (not that the weather will be sunny).

6