La Crosse Technology WT-5720 User Manual

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Radio Controlled Projection Alarm
Instruction Manual
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 6-7 DST (Daylight Saving Time) Setting 7 Adjustable Snooze 7-8 Time Setting 8 Date Setting 8 12/24-Hour Setting 9 Selecting °F or °C
Features & Operations Features 10 Radio-Controlled Time 10 Projection 11 LCD light 11 Indoor Temperature 11 Time Ala rm 12 Changing Display Mode (viewing seconds ) 13 Maintenance & Care 14 Troubleshooting 15 Specifications 16 Warranty and Contact Information 17-18
1) WT-5720 projection alarm
2) AC adapter/transformer
3) Instruction manual and warran ty card.
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, recept i on 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 website at
1) Insert two AA batteries into the projection alarm and/or plug into wall.
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
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.
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 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 app ears 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.
AC adapter receptacle
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, o r 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/+”, and “SNOOZE” (the top bar).
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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).
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