La Crosse Technology WT-2191A User manual

Model: WT-2191

Radio-controlled

Travel Alarm Clock

Instruction Manual

TABLE OF CONTENTS

Topic Page

Inventory of Contents 1

Quick Setup 2

Detailed Setup Guide

Battery Installation 3

About WWVB 4-6

Programming 6-8

Time zone 6

Daylight on/off 7

Snooze setting 7

Time setting 7-8

Setting Alarms 9-10

Operating Screens 11-12

Traveling 12

Troubleshooting 13

Maintenance, Warranty,

Contact information 14-16

INVENTORY OF CONTENTS

1. Radio controlled clock (figure 1)

2. Instruction Manual and Warranty Card.

Figure 1: Open

QUICK SETUP

1. The alarm clock is packed in the closed

position. To open, flip open the cover.

2. The alarm clock requires one AA

Alkaline battery. Open up the

compartment insert the battery to

activate. It will start searching for a

signal and set to the correct time and

date, usually not until overnight. After

the time and date are set, set to the

correct time zone.

DETAILED SETUP GUIDE

I. BATTERY INSTALLATION

A. The alarm clock requires one AA

Alkaline battery. Open up the

compartment insert the battery to activate.

It will start searching for a signal and set

to the correct time and date, usually not

until overnight.

II. PROGRAMMING

A. SETTING THE TIME

There are two methods by which the time

and date can be set: 1) Automatically via

WWVB reception, or 2) Manually.

B. WWVB (Radio-Controlled Time)

This method requires you to do nothing,

except wait for the signal to be received,

and to select a time zone. Reception

usually takes approximately 6-10 minutes

during optimal conditions. The best

conditions for reception is at night,

between midnight and 6:00 am—when

there is less atmospheric interference. To

keep your time as accurate as possible, the

alarm clock conducts a WWVB search

every night between these hours, and

overrides any manually set time. The

WWVB tower icon (appearing in the

TIME LCD) will flash when a signal-

search is in progress and a signal is being

received, and will remain steady when the

signal has been received. If the WWVB

time has not been received after 10

minutes of battery installation, you may

manually set the time or leave the time

function alone (reception will occur

regardless).

About Radio Controlled Time signal,

WWVB:

The NIST (National Institute of Standards

and Technology—Time and Frequency

Division) WWVB radio station is located

in Ft. Collins, Colorado, and transmits the

exact time and date signal continuously

throughout the United States at 60 kHz.

The signal can be received up to 2,000

miles away through the internal antenna in

the alarm clock. However, due to the

nature of the Earth’s Ionosphere,

reception is very limited during daylight

hours. The alarm clock will search for a

signal every night when reception is best.

The WWVB radio station derives its signal

from the NIST Atomic clock in Boulder,

Colorado. A team of atomic physicists is

continually measuring 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.

C. PROGRAMMING

(includes manual time setting)

**To end the programming mode at any

time, simply press the SNOOZE button

a) Press the SET button. The US map and

time zone will flash (“-5” is the default).

The time zone is displayed according to

“GMT”; please see below table for

explanation. Press the “+” key to move

the time zone West one hour until it

reaches the your time zone, then press

the SET key to set the time zone and

move to the next programming step.

-4: Atlantic, =-5: Eastern

-6: Central, -7: Mountain

-8: Pacific, -9: Alaska

-10: Hawaii

GMT: Greenwich

Mean Time

Eastern time zone

shown

b) “DST On” will flash. Press the “+”

key to toggle between the Daylight

Saving Time ON or OFF (for places that

do not follow Daylight Saving Time

changes). Press the SET key.

c) “Sno” will show at the bottom of the

screen, and a number will flash at the

top. This is the setting for the length of

the alarm snooze. Press the “+” key to

advance the length from 0 (no snooze))

to 59 minutes. This sets the time the

alarm is silenced after pressing the

SNOOZE key while the alarm is

sounding. Press the SET key.

d) The hour will now flash. Press the “+”

key to advance to the correct hour; be

sure to note the correct am/pm setting

(“PM” will show for pm setting, nothing

for the am setting). Press the SET key.

e) The minutes will now flash. Press the

“+” key to advance the minutes. By

holding the “+” key, the minutes will

advance in five minute increments. Press

the SET key.

f) The year will now flash. Press the “+”

key to advance to the correct year. Press

the SET key.

g) The month will now flash. Press the

“+” key to advance to the correct month.

Press the SET key.

h) The date will now flash. Press the “+”

key to advance to the correct day. Press

the SET key.

i) The day of the week will now flash

(Sun, Mon, etc.). Press the “+” key to

advance to the correct day of the week.

Press the SET key.

j) “12” or “24” will now flash. Press the

“+” key to select either 12 –hour or 24-

hour (military time). The programming

is now complete.

2. PROGRAMMING SEQUENCE

→Time Zone→DST On/OFF→Snooze

Setting→Hour→Minute→Year→Month

→Date→Day→12/24 hour format

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