La Crosse Technology Clock Radio WT 5720 User Manual

WT-5720  
Radio Controlled Projection Alarm  
Instruction Manual  
02'(  
 
INVENTORY OF CONTENTS  
1) WT-5720 projection alarm  
2) AC adapter/transformer  
3) Instruction manual and warranty card.  
ADDITIONAL EQUIPMENT (not included)  
1) Two fresh 1.5V AA batteries (optional for projection alarm)  
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 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. For more information about WWVB please see the NIST  
3
 
QUICK SET-UP GUIDE  
1) Insert two AA batteries into the projection alarm and/or plug into wall.  
Note: Do not press any buttons until the WWVB time signal is received or  
reception errors may occur.  
2) Wait 10 minutes for WWVB reception.  
3) If there is no WWVB reception manually set the time and date (instructions  
in the Program Mode).  
4) Program the settings.  
5) Mount the WT-5720 in a suitable location, where WWVB signal can be  
received.  
6) 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.  
7) See the “Features” section III for instructions on projection direction, etc.  
4
 
DETAILED SET-UP GUIDE  
I. BATTERY INSTALLATION  
A. 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.  
AC adapter  
receptacle  
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.  
Note: After the batteries have been installed a tone will sound, and the LCD  
(Liquid Crystal Display) will activate. The indoor temperature and the U.S.  
map will be displayed and 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 appear. If not, another  
search will take place every hour (until 6:00 am) until the signal is received  
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.  
5
 
II. PROGRAM MODE  
To enter the Program Mode, hold down the “SET” button for 1 second, until the time  
zone (“-5” default) flashes in the lower right. The program mode guide is laid out in  
a manner that allows you to program each function separately, or you can follow the  
instructions entirely to program the projection alarm. Complete programming is  
usually done for the initial set-up, and will require you to skip to step 4 of  
programming sections “D” through “H”. Press and release the “SNOOZE” button  
at any time to exit the program mode, or wait approximately 15 seconds for the  
projection alarm to automatically return to normal operation.  
A. Programming Sequence  
1. Time Zone Setting  
2. Daylight Saving Time ON/OFF  
3. Adjustable Snooze  
4. Hour Setting  
5. Minute Setting  
6. Year Setting  
7. Month Setting  
8. Date Setting  
9. Day Setting  
10. 12/24-hour Mode  
B. Function Buttons  
There are 6 function buttons located on  
the front of the projection alarm and one  
on the top. The function buttons are  
labeled: “ALM1/HOUR”,  
“ALM2/MIN”, light intensity icon, light  
direction icon, “SET”, “MODE/+”,  
02'(  
and “SNOOZE” (the top bar).  
C. Time Zone Setting  
1. Hold down the “SET” button for 1 second.  
2. The default (factory set) time zone (“-5”) will flash in the Date LCD.  
3. Press and release the “+” button to select the appropriate time zone.  
4. There are 13 time zones to choose from, based relative to the international  
time standard of GMT (“Greenwich Mean Time).  
6
 
5. From –5h to –8h a US map with the highlighted time zone will also be  
displayed to the right of the time display.  
-4h  
Atlantic Time  
-5h  
-6h  
Eastern Time (default setting)  
Central Time  
-7h  
Mountain Time  
-8h  
Pacific Time  
-9h  
Alaskan Time  
-10h  
Hawaiian Time  
-11h, -12h  
0h  
-1h, -2h, -3h  
Next two time zones West of HAW  
Greenwich Mean Time  
Three time zones West of GMT  
6. Press and release the “SET” button to confirm the time zone setting and to  
advance to DST (Daylight saving time) setting.  
D. DST (Daylight Saving Time) Setting  
Note: The DST default is “On”, meaning that the WWVB will automatically change  
the time according to Daylight Saving Time in the spring and fall. For areas that do  
not recognize DST changes (Arizona and parts of Indiana) turn the DST “OFF”.  
1. Hold down the “SET” button for 1 second.  
2. The selected time zone will flash.  
3. Press and release the “SET” button once more until “On” flashes in the  
lower right and “DST” flashes in the upper right.  
4. Press and release the “+” button to turn the DST off, as will be indicated by  
the display of “OFF” in the time LCD.  
5. Press and release the “SET” button to confirm the DST setting and to  
advance to select the length of the snooze.  
E. Adjustable Snooze Time  
Note: The snooze length can be adjusted from 1 minute to 59 minutes. This duration  
refers to the length of time the alarm will be disabled when the “SNOOZE” bar is  
pressed. If set to “0”, activating the snooze will turn off the alarm for 24 hours.  
1. Hold down the “SET” button for 1 second.  
2. The selected time zone will flash.  
3. Press and release the “SET” button 2 times until “Sno” appears in the lower  
right and duration (“:10” default) flashes in the time LCD.  
4. Press and release the “+” button to advance the snooze time from 0 (off ) to  
59 minutes.  
7
 
5. Press and release the “SET” button to confirm the snooze setting and to  
advance to manually set the time.  
F. Time Setting  
Note: When the WWVB signal is found, that time will over-ride the manually set  
time.  
1. Hold down the “SET” button for 1 second.  
2. The selected time zone will flash).  
3. Press and release the “SET” button 3 times until the hour flashes in the time  
LCD.  
4. Press and release the “+” button to select the hour.  
Note: when setting the hour, “PM” will appear to the left of the hour display, if  
it is AM nothing will be displayed.  
5. Press and release the “SET” button to confirm the hour setting and to shift  
to select the minutes.  
6. Press and release the “+” button to select the minutes.  
7. Press and release the “SET” button to confirm the time setting and to  
advance to manually set the date.  
G. Date Setting  
Note: When the WWVB signal is found, that date will over-ride the manually set  
date.  
1. Hold down the “SET” button for 1 second.  
2. The selected time zone will flash  
3. Press and release the “SET” button 5 times until the year flashes in the date  
LCD.  
4. Press and release the “+” button to select the year.  
5. Press and release the “SET” button to confirm the year and to set the  
month.  
6. The month will flash.  
7. Press and release the “+” button to select the appropriate month.  
8. Press and release the “SET” button to confirm the month and to set the date.  
9. The date will flash.  
10. Press and release the “+” button to select the appropriate date.  
11. Press and release the “SET” button to confirm the date and to set the  
weekday.  
12. The weekday will flash.  
13. Press and release the “+” button to select the appropriate weekday.  
14. Press and release the “SET” button to confirm the calendar settings and to  
advance to select either 12 or 24-hour time display.  
8
 
H. 12/24-Hour Setting  
Note: Setting to the 24-hour mode (also known as Military Time) will also change  
the temperature to display in °C instead of °F.  
1. Hold down the “SET” button for 1 second.  
2. The selected time zone will flash.  
3. Press and release the “SET” button 9 times until the “12” hour time display  
flashes in the time LCD.  
4. Press and release the “+” button to toggle between 12 and 24 hour time.  
5. Press and release the “SET” button to confirm the 12/24-hour time display  
and to return to normal operation.  
I. Selecting °F or °C  
The temperature is displayed in °F or °C, depending on the time format (12 or  
24 hour mode). When in 12-hour format the temperature will be in °F. When in  
24-hour mode the temperature will be in °C.  
9
 
FEATURES & OPERATIONS  
A. Features  
1. Radio-controlled time and date  
2. Projection of time  
3. LCD light  
4. Six modes of date/seconds/temperature display  
5. Indoor temperature  
6. Remote temperature  
7. Dual alarms  
8. Adjustable snooze  
B. Radio-Controlled Time and Date  
1. The projection alarm will automatically search for the time signal upon initial  
set-up and every night.  
2. When the signal is being received, there will be a “tower” icon flashing to the  
right of the time display.  
3. When the time signal has been received successfully, the tower icon will remain  
steady until midnight.  
4. 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.  
5. 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.  
6. 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.  
7. For more detail, visit http://www.boulder.nist.gov/timefreq.htm. To listen to the  
NIST time, call (303) 499-7111. 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.  
8. 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.  
10  
 
C. Projection of Time  
1. When plugged into an AC outlet, the projection alarm can continuously project  
the time.  
2. When operating on batteries alone the projection alarm will only project when a  
button is pressed.  
3. The projection will auto-focus for display from three to six feet away. A dark  
surrounding will be necessary to clearly see the projection.  
4. The direction of the display can be rotated 360° in 90° increments by pressing  
the directional button. There is no display on the LCD that signifies the  
direction.  
5. The projector case can be rotated 180° to further help orient the projected  
display.  
6. The intensity of the projection can be adjusted to three different settings as well  
as turned “off” by pressing the light Intensity button. When turned off, the  
projection will only come on when a button is pressed. The intensity cannot be  
set for the projected display when set to “off”.  
7. When only batteries are used, the intensity setting is set to “off” with no other  
options.  
02'(  
Projection  
Direction  
Light Intensity  
D. LCD Light  
1. The projection alarm has an LCD light designed for night viewing. This will  
light up for 2 seconds whenever a button is pressed.  
2. The LCD light cannot be turned on constantly; this would drain the batteries and  
burn out the light.  
E. Indoor Temperature  
1. The projection alarm measures indoor temperature with an internal sensor.  
2. This temperature is displayed in °F or °C, depending on the time format (12 or  
24 hour mode). When in 12-hour format the temperature will be in °F. When in  
24-hour mode the temperature will be in °C.  
3. The indoor temperature will take time to adjust to the surrounding temperature  
as the sensor is inside the case.  
11  
 
F. Time Alarm  
The projection alarm has two separate alarms for time, “ALM1” and “ALM2”. The  
alarms have a different sound; ALM1 increases in volume after 25 seconds, and  
again after 50 seconds. ALM2 is a constant volume. The total duration is 96 seconds  
for each alarm.  
1. Setting the Alarm  
a) Press and hold “ALM1” or “ALM2” for two seconds until the alarm time is  
flashing.  
b) Press and release “ALM1/HOUR” to advance the hour.  
c) Press and release “ALM2/MIN” to advance the minute.  
d) The time will display “PM” if set to PM, and nothing if set to AM.  
e) “(((1)))” or “(((2)))” will be displayed to the right of the time when the alarm  
is activated.  
f) The projection alarm will revert to normal operation when no buttons are  
pressed for 15 seconds.  
g) The alarm is now set and activated.  
2. Activating/Deactivating the Alarm  
a) After entering the alarm setting mode the alarm is activated (either ALM1 or  
ALM2).  
Alarm 2 activated  
b) To toggle between activating and  
deactivating the alarm, press either the  
“ALM1” or “ALM2” briefly.  
c) “(((1)))” or “(((2)))” will be displayed to  
the right of the time display when the  
alarm is activated.  
d) When the snooze bar is pressed, the  
display will scroll through the Alarm 1  
and Alarm 2 times in the lower right.  
3. Turning Alarm Off (While Sounding)  
a) While either alarm is sounding press and release the “SNOOZE” bar to  
disable the alarm for the set duration (Section II. D.).  
b) If the duration is set to “0” the alarm will be disabled for 24 hours.  
c) After the “SNOOZE” bar is pressed the lower left will display the time  
remaining on the snooze.  
d) The “SNOOZE” bar may be pressed at any time to restart the snooze  
duration.  
e) To disable the alarm for 24 hours press any button other than “SNOOZE” or  
projection keys.  
12  
 
G. Changing the Display Mode (Day, Seconds, and Temperature)  
There are six possible display modes to view the day, seconds, and temperature. To  
change the display (starting at the default of day, date, year):  
1. Press and release the “MODE/+” button.  
2. The display should now show month, day, year.  
3. Press and release the “MODE/+” button again.  
4. The display will now show seconds.  
5. Press and release the “MODE/+” button again.  
6. The display will now show alarm1 time.  
7. Press and release the “MODE/+” button again.  
8. The display will now show alarm2 time.  
9. Press and release the “MODE/+” button again.  
10. The display will now show indoor temperature.  
11. Press and release the “MODE/+” button again.  
12. The display will now show day, month, date.  
13  
 
II. MAINTENANCE & CARE  
1. Extreme temperatures, vibrations, and shock should be avoided to prevent damage  
to the units.  
2. Clean displays and units with a soft, damp cloth. Do not use solvents or scouring  
agents—they may mark and damage the displays and casings.  
3. Do not submerge in water.  
4. Immediately remove all low powered batteries to avoid leakage and damage.  
5. Replace with new batteries only, and of recommended size.  
6. Opening the casings invalidates the warranty. Do not try to repair the units.  
Contact La Crosse Technology for Repairs.  
14  
 
TROUBLESHOOTING  
Problem:  
Solution:  
The Projection is faint  
1) Change intensity setting  
2) Use AC adapter  
3) Darken surroundings  
4) Use fresh batteries (if AC is not used)  
Problem:  
Solution:  
Problem:  
Solution:  
The LCD is faint.  
Replace the batteries.  
No reception of WWVB signal.  
1) It may help reception to face the front of the projection alarm  
in the general direction of Ft. Collins, Colorado.  
2) Wait overnight for signal.  
3) Be sure the projection alarm is at least 6 feet from any  
electrical devices, i.e. TV sets, computers, or other radio  
controlled clocks.  
4) Remove batteries for five minutes, reinsert and leave the unit  
alone overnight without pressing buttons.  
5) If problems persist contact La Crosse Technology.  
Hour is incorrect (minute and date are correct).  
Be sure correct time zone and daylight saving time are selected.  
Problem:  
Solution:  
Note: For any questions not answered, contact La Crosse Technology with the contact  
information found at the end of this instructional manual.  
15  
 
SPECIFICATIONS FOR WT-5720  
Temperature:  
Measuring range:  
32°F to 122°F with 0.2°F resolution (indoor)  
(0°C to 50°C with 0.1°C resolution)  
Every 10 seconds indoor  
Checking intervals:  
Power source:  
AC Adapter (included)  
Battery type:  
Input: 120VAC/60Hz Output: DC 6V/100MA  
Station: 2 x AA, 1.5V (Alkaline) (optional)  
Approximately 12 months, depending on  
projection and light use  
Battery life:  
Dimensions (L x W x H):  
5.25”W x 3.75”H x 1.25”L  
16  
 
WARRANTY INFORMATION  
La Crosse Technology, Ltd provides a 1-year limited warranty on this product against manufacturing  
defects in materials and workmanship.  
This limited warranty begins on the original date of purchase, is valid only on products purchased and  
used in North America and only to the original purchaser of this product. To receive warranty service,  
the purchaser must contact La Crosse Technology, Ltd for problem determination and service  
procedures. Warranty service can only be performed by a La Crosse Technology, Ltd authorized  
service center. The original dated bill of sale must be presented upon request as proof of purchase to  
La Crosse Technology, Ltd or La Crosse Technology, Ltd’s authorized service center.  
La Crosse Technology, Ltd will repair or replace this product, at our option and at no charge as  
stipulated herein, with new or reconditioned parts or products if found to be defective during the  
limited warranty period specified above. All replaced parts and products become the property of La  
Crosse Technology, Ltd and must be returned to La Crosse Technology, Ltd. Replacement parts and  
products assume the remaining original warranty, or ninety (90) days, whichever is longer. La Crosse  
Technology, Ltd will pay all expenses for labor and materials for all repairs covered by this warranty.  
If necessary repairs are not covered by this warranty, or if a product is examined which is not in need  
or repair, you will be charged for the repairs or examination. The owner must pay any shipping  
charges incurred in getting your La Crosse Technology, Ltd product to a La Crosse Technology, Ltd  
authorized service center. La Crosse Technology, Ltd will pay ground return shipping charges to the  
owner of the product to a USA address only.  
Your La Crosse Technology, Ltd warranty covers all defects in material and workmanship with the  
following specified exceptions: (1) damage caused by accident, unreasonable use or neglect  
(including the lack of reasonable and necessary maintenance); (2) damage occurring during shipment  
(claims must be presented to the carrier); (3) damage to, or deterioration of, any accessory or  
decorative surface; (4) damage resulting from failure to follow instructions contained in your owner’s  
manual; (5) damage resulting from the performance of repairs or alterations by someone other than  
an authorized La Crosse Technology, Ltd authorized service center; (6) units used for other than  
home use (7) applications and uses that this product was not intended or (8) the products inability to  
receive a signal due to any source of interference.. This warranty covers only actual defects within  
the product itself, and does not cover the cost of installation or removal from a fixed installation,  
normal set-up or adjustments, claims based on misrepresentation by the seller or performance  
variations resulting from installation-related circumstances.  
LA CROSSE TECHNOLOGY, LTD WILL NOT ASSUME LIABILITY FOR INCIDENTAL,  
CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE  
OPERATION OR MALFUNCTION OF THIS PRODUCT. THIS PRODUCT IS NOT TO BE USED  
FOR MEDICAL PURPOSES OR FOR PUBLIC INFORMATION. THIS PRODUCT IS NOT A TOY.  
KEEP OUT OF CHILDREN’S REACH.  
This warranty gives you specific legal rights. You may also have other rights specific to your State.  
Some States do no allow the exclusion of consequential or incidental damages therefore the above  
exclusion of limitation may not apply to you.  
17  
 
For warranty work, technical support, or information contact:  
La Crosse Technology  
2809 Losey Blvd. S.  
La Crosse, WI 54601  
Phone: 608.782.1610  
Fax: 608.796.1020  
e-mail:  
(warranty work)  
(information on other products)  
web:  
FCC ID: OMO-01RX (Receiver)  
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. THIS DEVICE MUST ACCEPT INTERFERENCE RECEIVED, INCLUDING INTERFERENCE  
THAT MAY CAUSE UNDESIRED OPERATION.  
18  
 

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