La Crosse 513-1211 Atomic Digital Clock User Manual

Table of Contents

La Crosse 513-1211 Atomic Digital Clock

About La Crosse La Crosse Technology is a company that specializes in manufacturing and selling a wide range of electronic products and accessories, including weather stations, clocks, thermometers, hygrometers, and other home and office electronic devices.

The company was founded in 1985 and is based in La Crosse, Wisconsin. La Crosse Technology is known for producing high-quality, reliable, and accurate electronic products designed to make daily life more convenient and comfortable.

Many of their products are equipped with wireless technology and can be connected to smartphones, tablets, or other devices to provide real-time updates and data readings. La Crosse Technology is also committed to being eco-friendly and incorporates energy-efficient features in many of its products.

Features

Large 4 inch time display.
12/24-hour time selectable.
Atomic Time and Date with manual set option
Four Time Zones: Eastern, Central, Mountain, & Pacific.
Daylight Saving automatically updates (On/Off option).
Calendar: Month, Date, Day.
Time alarm with snooze.
Monitors Indoor temperature (°F or °C)
Low battery indicator.

Setup

Select the time zone with the SELECTOR BAR on the back of the clock.
Slide the battery cover up to open.
Insert three AA alkaline batteries according to polarity markings.
Do not press buttons for four minutes to allow the clock to search for a WWVB signal. The tower icon will flash.
Note: If only the bottom of the tower icon is showing and the top of the icon is not flashing, reposition the clock for better signal reception.
When WWVB signal reception occurs, the time and date will be set and the tower icon will show solid above the seconds.
Note: During the search for the time signal the other set functions will not work. This is normal and not a defect in the clock. Press the WAVE/+ button at any time to stop the signal search. Hold the WAVE/+ button for 3 seconds to initiate a signal search.

WWVB Radio controlled time

The NIST radio station, WWVB, is located in Ft. Collins, Colorado, and transmits the exact time signal continuously throughout the United States at 60 kHz. The signal has a range of up to 2,000 miles. However, due to the nature of the Earth’s Ionosphere, reception is very limited during daylight hours. The atomic clock 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 continually measures every second of every day to an accuracy of ten billionths of a second a 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 atomic clock regulates the WWVB transmitter.

The clock receives the time signal via its built-in antenna and adjusts automatically to the selected time zone. Once the correct time is set, the clock continues running with an internal quartz-controlled mechanism.
The reception system of the clock daily compares its data at 22:00 am to the signal from the WWVB transmitter. If no signal is received for four minutes, the system will automatically try to compare the time at 3:00 am, 4:00 am, and 4:00 pm.
The internal quartz mechanism is very accurate; therefore, it does not matter if the clock is occasionally unable to receive the time signals.

When the tower icon flashes but does not set the time or the WWVB tower does not appear at all, take note of the following:

Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet (2 meters).
Within ferro-concrete rooms (basements, superstructures), the received signal is naturally weakened. In extreme cases, please place the unit close to a window and/ or point its front or back toward the Fort Collins, Colorado, transmitter.
During nighttime, the atmospheric disturbances are usually less severe and reception is possible in most cases. A single daily reception is adequate to keep the accuracy deviation below 1 second.

Note: On rare occasions, the atomic clock is not able to detect the WWVB signal (disturbances, transmitting distance, etc.); the time can be manually set.

Set Time

The SET button will move through the program menu. The WAVE/+ or DST/- buttons will change a value. Hold the SET button for 3 seconds and the LCD will flash.

12/24-HOUR TIME: 12h or 24h will flash. Press and release the WAVE/+ button to select the 12-hour or 24-hour time format. Press and release the SET button to confirm and continue.
HOUR: The hour will flash. Press and release the WAVE/+ button to select the hour. Press and release the SET button to confirm and continue.
MINUTES: The minutes will flash. Press and release the WAVE/+ button to select the minutes. Press and release the SET button to confirm and continue.
YEAR: The year will flash. Press and release the WAVE/+ button to select the year. Press and release the SET button to confirm and continue. (The year will only show in the program menu).
MONTH: The month will flash. Press and release the WAVE/+ button to select the month. Press and release the SET button to confirm and continue.
DATE: The date will flash. Press and release the WAVE/+ button to select the date. (The weekday will be set automatically). Press and release the SET button to confirm and exit.

Other Settings: begin from the normal time display.

DST: Hold the DST/- button for 3 seconds to turn DST on or off. When it is on you will see the DST icon DST appear above the seconds
FAHRENHEIT/CELSIUS: Hold the °C /°F button for 3 seconds to display the indoor temperature in Fahrenheit or Celsius.
TIME MODE/ALARM MODE: Press and release the SET button one time to switch from Time Mode to Alarm Mode. In Alarm Mode, the letters AL will show in the seconds display.

Set Alarm Time: Press and release the SET button once to enter Alarm Mode. The letters AL will show in the second display.

HOUR: Hold the SET button for 3 seconds. The hour will flash. Press and release the WAVE/+ button to select the hour. Press and release the SET button to confirm and continue.
MINUTES: The minutes will flash. Press and release the WAVE/+ button to select the minutes. Press and release the SET button to confirm and exit.

Activate/Deactivate Alarm: In Alarm Mode press and release the WAVE/+ or DST/- button to switch the alarm on or off. When the alarm is ON the alarm icon will appear between the hours and the minutes. When the alarm is OFF the icon will disappear. Snooze function: Press the SNOOZE button when the alarm beeps and the alarm will become silent and sound again in 5 minutes. The snooze icon will flash when the snooze function is active.

Low Battery Indicator: When the low battery indicator appears in front of the indoor temperature, install a fresh alkaline battery.
Position the clock: When positioning the clock it is always best to have the front or the back facing Ft. Collins, Colorado for best WWVB signal reception.
Wall mount: Insert a screw into the desired wall, leaving the head extended out by about 0.2” (5mm). Carefully hang the clock on the screw, using the hanging hole on the back of the clock.

Note: Always ensure that the unit locks onto the screw head before releasing.

Table stand: Pull out the two table-stand brackets from the rear of the clock. Place on table or desk as desired.

Specifications

Indoor temperature: +14 to +122 °F (-10 to +50 °C) (Above this range will show Hi, below this range will show Lo).
Dimensions: 10 ¾ inches H x 16 ¾ inches W x 1 3/8 inches D (273.05 mm H x 425.45 mm W x 36 mm D)

Care and Maintenance

Replace batteries promptly when needed.
Remove batteries when the clock is not in use or when in storage.
Clean only with a soft cloth or paper towel. Do not use corrosive cleansers or chemical solutions on the clock.
Avoid placing clocks in high-humidity environments such as poolside or in a bathroom.
Keep the clock clean and dry to avoid problems.
Do not expose the clock to direct sunlight or extremely hot or cold temperatures.

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 and 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. For warranty work, technical support, or information contact:

La Crosse Technology 2817 Losey Blvd. S. La Crosse, WI 54601 www.lacrossetechnology.com/513-1211

Contact Support: 1-608-782-1610

Product Registration: www.lacrossetechnology.com/support/register.php All rights reserved. This handbook must not be reproduced in any form, even in excerpts, or duplicated or processed using electronic, mechanical, 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 are made in the next issue. We accept no liability for technical mistakes or printing errors, or their consequences. All trademarks and patents are acknowledged.

FAQs About La Crosse 513-1211 Atomic Digital Clock

How is the La Crosse Atomic Clock operated?

The WWVB radio signal, which is continuously transmitted from Fort Collins, Colorado by the National Institute of Standards and Technology (NIST), is automatically synced with atomic clocks. The official time is transmitted by this transmission from Boulder, Colorado’s Atomic Clock.

The Atomic Clock How is it set?

Atomic clocks made by Chaney and AcuRite synchronize to the accurate time transmitted by the National Institute of Standards and Technology (NIST) Radio Station WWVB, which is situated close to Fort Collins, Colorado, using a radio-controlled signal. With split-second accuracy, WWVB transmits the time and date

An atomic digital clock: what is it?

For increased stability, atomic clocks pair an ensemble of atoms with a quartz crystal oscillator. After four days and ten years, NASA’s Deep Space Atomic Clock will be off by less than a nanosecond (one-millionth of a second).

How can I receive a signal from an atomic clock?

Atomic clocks are equipped with directional antennas, and signal strength can be increased by rotating the antenna to optimize reception. The radio-controlled clock should be positioned next to a window that looks towards Fort Collins or along a wall. Atomic wall clocks should be placed at least 4–8 feet away from computer screens.

How are clocks operated?

In mechanical clocks, the hands are driven by a gear train; in electronic clocks, the hands are moved by a stepper motor and gear train that are driven by a circuit that generates pulses every second. Digital clocks use a digital display with digits that change frequently to show the time.

Does the time of the atoms change?

In the International Atomic Time and Time Standard, clocks remain unchanged. Time Standard has never before changed due to DST.

An atomic clock may be impacted by what?

The frequency has drifted if the atoms haven’t hopped a rung on their energy ladder. Pressure or temperature changes could have affected the quartz, much like they do in regular watches. When this occurs, the oscillator will be corrected by an electric circuit in the clock.

Are atomic clocks universally functional?

Most house clocks that are set to synchronize with Boulder, Colorado’s atomic clock only do so inside the continental United States and a few regions of Canada and Mexico. Continents other than North America, including Hawaii and Alaska, will not experience accurate atomic clock synchronization.

What is the size of an atomic clock?

Approximately the size of a deck of cards, conventional vapor cell atomic clocks require roughly 10 W of electricity and run about $3,000. Squeezing these down to the size of a semiconductor chip requires a great deal of work and multiple innovations.

Atomic clocks: are they sensors?

The sensor of MIT LL’s optical atomic clock is an ion trap, specifically one that confines a Strontium ion with an electrical field. The oscillator of the clock is a laser, which detects the oscillation frequency of an ion as it moves between two quantized energy levels.

For more Manuals by La Cross, Visit Manualsdock