La Crosse Technology WT-5721 User Manual

WT-5721

433 MHz

Radio Controlled Projection Alarm

Instruction Manual

02'(

PROJECTION



TABLE OF CONTENTS

Topic Page

Inventory of Contents/ Additional Equipment 3
About WWVB 3
Quick Set-Up Guide 4

Detailed Set-Up Guide
Battery Installation 5
Program Mode
Programming Sequence 6
Function Buttons 6
Time Zone Setting 6
DST (Daylight Saving Time) Setting 7
Adjustable Snooze 7
Time Setting 7
Date Setting 7
12/24-Hour Setting 8

Features & Operations
Features 9
Radio-Controlled Time 9
Projection 9-10
EL Backlight 10
Indoor Temperature 10
Remote Temperature 10
Time Alarm 11
Changing Display Mode (viewing seconds) 11
Mounting 12
Maintenance & Care 12
Troubleshooting 13
Specifications 14
Warranty and Contact Information 15

2

INVENTORY OF CONTENTS

ADDITIONAL EQUIPMENT (not included)

FEATURES OF PROJECTION ALARM

Operation of these features is in section III.

ABOUT WWVB (Radio Controlled Time)

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 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 projection alarm. However, due to the nature of the Earth’s Ionosphere,
reception is very limited during daylight hours. The projection alarm will search for a signal every
night when reception is best.

The WWVB radio station receives the time data 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. For more detail, visit
http://www.boulder.nist.gov/timefreq.htm. To listen to the NIST time, call [phone]. This number
will connect you to an automated time, announced at the top of the minute in “Coordinated Universal
Time”, which is also known as Greenwich Mean Time (GMT). This time does not follow Daylight
Saving Time changes. After the top of the minute, a tone will sound for every second. It is possible
that your projection alarm may not be exactly on the second due to the variance in the quartz.
However, the clock will adjust the quartz timing over the course of several days to be very accurate;
under 0.10 seconds per day.

1) WT-5721 Alarm Clock

2) TX6U Remote temperature sensor

3) AC adapter/transformer

4) Instruction manual and warranty card.

1) Two fresh 1.5V AA batteries (optional for alarm clock)

2) Two fresh 1.5V AA batteries (for remote sensor)

1. Radio-controlled time and date

2. Projection of time and/or remote temperature

3. EL backlight

4. Six modes of date/seconds/temperature display

5. Indoor temperature

6. Remote outdoor temperature

7. Dual alarms

8. Adjustable snooze

3

QUICK SET-UP GUIDE

Hint: Use good quality Alkaline Batteries and avoid rechargeable batteries.

1. Have the indoor station and outdoor remote 3 to 5 apart.

2. Batteries should be out of both units for 10 m i nut es.

3. Place the batteries into the outdoor remote first then into the indoor station.

(All outdoor remotes must be started before the indoor station)

4. DO NOT PRESS ANY BUTTONS FOR 10 MINUTES.

In this time the display and sensor will start to talk to each other and the display will
show both the indoor temperature and an outdoor temperature. If the station does not
display both temperatures after the 10 minutes please retry the set up as stated above.
After both indoor and outdoor temperatures are displayed for 10 minutes you can place
your sensor outdoors and set your time.

The remote sensor should be placed in a dry, shade d area. The rem ote sensor has a range
of 80 feet. Any walls that the signal will have to pass through will reduce distance. An
outdoor wall or window will have 20 to 30 feet of resistance and an interior wall will
have 10 to 20 feet of resistance. Your distance plus resistance should not exceed 80 ft. in
a straight line.

NOTE: Fog and mist will not harm your remote sensor but direct rain must be avoided.

To complete the set up of your temperature station after the 10 minutes have passed
please follow the steps beginning on page 6.

4

B

DETAILED SET-UP GUIDE

II.

BATTERY INSTALLATION
A. REMOTE TEMPERATURE SENSOR

1. Remove the battery cover. Observing the correct polarity,
install 2 AA batteries. The batteries will fit tightly (to avoid
start-up problems make sure that they do not spring free
during installation).

2. Replace the battery cover.

B. PROJECTION ALARM

1. Remove the battery cover.

2. Observe the correct polarity, and install 2 AA batteries.

3. In addition or instead of inserting
batteries, the AC adapter can be
used. Simply plug the adapter into
the receptacle on the underneath
of the alarm clock and then plug in
adapter.

4. Replace the battery cover.

5. The projector will activate and
remain on if the alarm clock is
plugged in. If only batteries are
used, the projector will only be activated when a button is pressed. The projection is a
red light, not harmful under normal usage, although care should be taken to not look
directly into the light.

After the batteries have been installed a tone will sound, and the LCD (Liquid

Note:

Crystal Display) will activate. The indoor temperature and the remote temperature will
be displayed (within three minutes). Also, the time will appear as “-:--”. The WWVB
search is automatically initiated, and a tower icon appears and flashes with the time
colon (no tower icon will appear if the WWVB is too weak to be detected, and the time
display will remain on “-:--”). While the WWVB search is being conducted various
numbers will appear in the time display. After 10 minutes, the projection alarm will
either display the WWVB time, or discontinue the search if the time is not found. If the
search is cancelled “-:--” will remain in the time LCD. The projection alarm will
conduct a WWVB search every hour until the first signal is found. Once the WWVB
time is found, a search is automatically conducted nightly at midnight. If the signal is
found at midnight, the tower icon will remain, if not, another search will take place
every hour (until 6:00 am) until the signal is found successfully. If no signal is found
during this period, the tower icon will not appear and the clock will search again at
12:00 am the next night.

attery

Cover

AC adapter
receptacle

5