La Crosse Technology WS-8157U-IT Glossary of Common Terms, Features, RADIO-CONTROLLED Clock

GLOSSARY OF COMMON TERMS

NIST*

The National Institute of Standards and Technology maintains the primary frequency standard for the United States. The NIST also coordinates the United States time and frequency standards with other world standards. The NIST provides time and frequency services for United States clientele.

WWVB*

The WWVB is an AM radio station in Ft. Collins, Colorado, managed by the NIST. The WWVB’s function is to broadcast time-of-day information derived from the NIST atomic clock, located in Boulder, Colorado.

ATOMIC CLOCK*

An atomic clock is an extremely accurate time device measuring time by the movements of electrons in cesium atoms. The NIST atomic clock is one of the most precise clocks in the world, accurate to 10 billionths of one second. The NIST’s atomic clock contributes to the international group of clocks calculating the Coordinated Universal Time (UTC)—the official world time.

RADIO CONTROLLED TIME*

A radio controlled time device is often confused with an atomic clock. However, a radio controlled time device receives its time information from the atomic clock each day through an internal antenna. The radio controlled time device searches for an exact time signal every night when the signal from the WWVB is the strongest. The signal can be received up to 2,000 miles away through a radio controlled time device.

LCD

“LCD” is an acronym for ”Liquid Crystal Display”. This is a common type of display screen used in televisions, computers, watches, and digital clocks.

CELSIUS (°C)

Celsius is metric system’s unit of measurement used to calculate temperature.

FAHRENHEIT (°F)

Fahrenheit is the common unit of measurement used to calculate temperature in the United States.

*For more information regarding the NIST, WWVB, atomic clock, and radio controlled time, please visit the NIST official website: http://www.boulder.nist.gov/timefreq/stations/wwvb.htm

This product offers:	INSTANT TRANSMISSION is the state-of-
	the-art new wireless transmission
	technology,	exclusively designed and
	developed	by	LA	CROSSE
	TECHNOLOGY.			INSTANT
	TRANSMISSION offers you an immediate
	update (every 4 seconds!) of all your
	outdoor data measured from the
	transmitters:	follow	your	climatic
	variations in real-time!

FEATURES:
RADIO-CONTROLLED CLOCK:	Hanging holes
LCD1
display	Function keys
LCD2	Battery cover
display

Foldable stand

•WWVB Radio controlled time with manual time setting

•Time display: hour, minute, second

•Alarm setting with snooze function

•Calendar display

•Weekday display (3 languages to choose from: English, French, Spanish)

•Time zone setting

•Daylight savings time ON/OFF option (DST)

•ºC or ºF temperature display selectable

•Wireless transmission at 915MHz

•Signal reception intervals at 4 seconds

•Low battery indicator

•Wall mount or freestanding

•Weather forecast with weather tendency indicator based on air pressure

OUTDOOR TEMPERATURE TRANSMITTER:

•Remote transmission of outdoor temperature to the radio-controlled clock by 915 MHz signals

•Wall mounting case

Holder

2