La Crosse Technology WT-2191A User manual

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Model: WT-2191
Radio-controlled
Travel Alarm Clock
Instruction Manual

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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

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INVENTORY OF CONTENTS
1. Radio controlled clock (figure 1)
2. Instruction Manual and Warranty Card.
Figure 1: Open

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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.

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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.

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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

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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

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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

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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.

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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