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nature of the Earth's Ionosphere, reception is very limited during 
daylight hours. 
The Watch will search for a signal every night when reception is best. 
The WWVB radio station derives its signal from the NIST Atomic 
clock in Ft. Collins, 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. This watch is 
regulated by the WWVB transmitter. 
For more information on WWVB and the NIST Atomic clock please 
visit their website at 
http://www.boulder.nist.gov/timefreq/stations/wwvb.htm 

 

Summary of Contents for WT-931

Page 1: ...Technology Time and Frequency Division WWVB radio station is located in Ft Collins Colorado and transmits the exact time signal continuously at 60 kHz The signal can be received up to 2 000 miles away through the internal antenna in the E Howard Co watch However due to the 1 ...

Page 2: ...eam 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 This watch is regulated by the WWVB transmitter For more information on WWVB and the NIST Atomic clock please visit their website at ht...

Page 3: ...SET UP GUIDE FEATURES AND OPERATION DISPLAY OF HOURS MINUTES Recessed button Analogue display Digital LCD Push piece button 3 ...

Page 4: ...isplay the correct time and date and it will not be necessary to use the manual settings Hours and Minutes are shown using the analog display Date and Seconds are shown in the digital LCD DIGITAL DISPLAY OF DATE SECONDS AND WWVB RECEPTION CONTROL 4 ...

Page 5: ...Press and release the PUSH PIECE to toggle between the displays Month and Day The Date appears as Month and day ex 12 30 Or Seconds and WWVB Signal Reception Icon 5 ...

Page 6: ...anually IMPORTANT If the WWVB signal is received correctly the symbol tower is shown and setting the time and date manually is not possible 1 To change the setting mode for time and date press the PUSH PIECE and the RECESSED BUTTON simultaneously for about 4 seconds The seconds will flash in the LCD display ...

Page 7: ... to zero 00 3 Press and release the PUSH PIECE to set the minutes Hold the PUSH PIECE continuously to fast forward the minutes 4 By pressing and releasing the RECESSED BUTTON you can change the setting menu in the following order a Seconds b Minutes 7 c Hours ...

Page 8: ... time BEGIN WWVB SIGNAL SEARCH MANUALLY If the WWVB reception is disturbed you can start the WWVB signal search manually 1 Press and hold the PUSH PIECE for about 4 seconds The hands will advance to the 12 00 position SET and 12 will then flash alternately in the LCD If the hands do not move exactly to the 12 00 position you will have to manually adjust the hands See Adjusting the Hands ...

Page 9: ...he reception is disturbed ex close proximity to metallic objects or electric appliances the watch will automatically try several times to receive the WWVB signal ADJUSTING THE HANDS If the time is displayed incorrectly despite successful WWVB signal reception the hands may have been moved by mechanical influences and will need to be adjusted manually 1 Press and hold the PUSH PIECE for about 4 sec...

Page 10: ...all steps until the hands are set exactly to the 12 00 position b To exit this setting press and release the PUSH PIECE 2 Press and release the PUSH PIECE The watch automatically adjusts to the manually set time and attempts to receive the WWVB signal After successful WWVB signal reception the time will be set automatically SETTING TIME ZONE You may select your time zone manually ...

Page 11: ...out 4 seconds The current hour is shown at the left of the display The right side displays the current time zone selection 2 Press and release the PUSH PIECE until you see your desired time zone Time Difference City HA Honolulu P Los Angeles 11 ...

Page 12: ...nver C Chicago Mexico City E New York Toronto 3 Rio de Janeiro Buenos Aires 0 London 1 Paris Rome Berlin Hamburg 2 Cairo Helsinki Johannesburg 3 Moscow 4 Dubai 5 Karachi 7 Bangkok 8 Hong Kong 9 Tokyo 10 Sydney ...

Page 13: ...play setting Warranty 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 Tec...

Page 14: ...ir 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...

Page 15: ...echnology 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 prese...

Page 16: ...bility 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 ASSU...

Page 17: ...H 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 For warranty work technical support or information contact La Crosse Technology Ltd 2809 Losey Blvd S La Crosse WI 54601 ...

Page 18: ...18 Phone 608 782 1982 Fax 608 796 1020 e mail support lacrossetechnology com warranty work sales lacrossetechnology com information on other products web www lacrossetechnology com ...

Page 19: ...or chemical procedures without written permission of the publisher This handbook may contain mistakes and printing errors The information in this handbook is regularly checked and corrections made in the next issue We accept no liability for technical mistakes or printing errors or their consequences All trademarks and patents are acknowledged ...

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