La Crosse Technology 512-807 User Manual

1

Time WWVB Perpetual
Reception icon Calendar

Channel indicator

Transmitter low
battery indicator

Forecast icon

12-hour pressure
history graph

Current pressure

Temperature
trend indicators

Outdoor temperature Indoor temperature

512-807 Digital Barometer

Wireless Weather Station

The Wireless Weather Station with Digital Barometer offers radio-controlled time,

weather forecast, and indoor and outdoor temperature on one easy to read display.

ATOMIC WEATHER STATION:

Manual

Introduction

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FEATURES:

Six digit time display
Atomic time and date with manual set option
Automatically updates for Daylight Saving Time (on/off option)
12-hour or 24-hour selectable time
Barometric pressure with 12-hour history graph.
Forecast icons: sunny, partly cloudy, cloudy, rainy and stormy.
Time Alarm
Perpetual calendar.
Indoor temperature (°F or °C)
Outdoor temperature (°F or °C)
Can read up to 3 outdoor sensors
Temperature trend indicators for indoor and outdoor temperature: up, steady, down.
Minimum and Maximum indoor and outdoor temperature
Wall hanging or free standing
Low battery indicator for receiver and transmitter
100 foot wireless transmission range (open air)

SET UP:
IMPORTANT: Do not mix old and new batteries.

Remove the screws and the battery cover from the back of the transmitter with a small

screwdriver. (see install batteries in transmitter).
Set the transmitter to Channel 1.
NOTE: if you have additional transmitters set them to channel 2 and channel 3 respectively.
Insert fresh alkaline batteries into the transmitter, observing the correct polarity (see marking

inside battery compartment). Keep the transmitter 5-10 feet from the weather station.
Select Fahrenheit or Celsius for the sensor display.
Within 30 seconds of powering up the transmitter, insert batteries into the Weather station,

observing the correct polarity (see install batteries in the weather station). Once the

batteries are in place, all segments of the LCD will light up briefly. Following the indoor

temperature will be displayed. If the indoor temperature is not shown in the LCD after 60

seconds, remove the batteries and wait for at least 60 seconds before reinserting them.

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Once the indoor data is displayed, proceed to the next step.

Channel Selection

C/F Selection

Battery Cover

TX Button

Battery Compartment

After the batteries are inserted, the Weather station will start receiving outdoor temp data

from the transmitter.
NOTE: This can take up to 10 minutes.
The outdoor temperature should then be displayed on the Weather station. If this does not

happen after 10 minutes, remove the batteries from both units and start again from the

beginning.
In order to ensure sufficient 434 MHz transmission, the outdoor transmitter should be placed

a distance of no more than 100 feet (30 meters, open air) from the Weather station.

INSTALL BATTERIES IN THE TRANSMITTER:

Remove the screws and the battery cover from the back of the transmitter with a small
Select the channel to transmit the outdoor temperature.

NOTE: if using more than one transmitter, set each to a different channel to be displayed on
Insert two fresh AAA alkaline batteries into the transmitter, observing the correct polarity

Select Fahrenheit or Celsius for the sensor display.

screwdriver.

the weather station.

(see marking inside battery compartment). Keep transmitter 5-10 feet from the weather

station.

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INSTALL BATTERIES IN THE WEATHER STATION:

Battery compartment

Wall mount hole

Function buttons

Remove the battery cover from the weather station:

Insert a finger in the rounded depression at the bottom of the battery cover.

Lift up and pull out to remove battery cover.
Install two fresh AA alkaline batteries according to the polarity markings.
Replace battery cover.
Within 30 seconds of powering up the transmitter, insert batteries into the Weather station,

observing the correct polarity. Once the batteries are in place, all segments of the LCD will
light up briefly. Following the indoor temperature will be displayed. If the indoor temperature
is not shown in the LCD after 60 seconds, remove the batteries and wait for at least 60
seconds before reinserting them.

TEMPERATURE SELECTION:
FAHRENHEIT/CELSIUS:

Weather station: Press and release the -/ button once to switch from Fahrenheit to Celsius.
Transmitter: Remove the battery cover then press and release the C/F button on the transmitter

to select Fahrenheit or Celsius.
Channels: If more than one transmitter is used, set each transmitter to a different channel. To

view: press the CH button to select Ch1, Ch2, Ch3 and auto-channel scrolling display modes.
Auto-channel will show a circling arrow above the channel number and will rotate through

each channel approximately every 5-8 seconds.

Battery cover

Foldout stands

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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 can be received up to
2,000 miles away through the internal antenna in the atomic weather station. However, due to the
nature of the Earth’s Ionosphere, reception is very limited during daylight hours. The atomic
weather station will search for a signal every night when reception is best. The WWVB radio
station derives its signal from the NIST atomic weather station 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 weather station
regulates the WWVB transmitter.

Once the outdoor temperature is displayed on the atomic weather station, the WWVB tower icon
in the weather station display will start flashing in the top center of the LCD. This indicates that the
weather station has detected a radio signal and is trying to receive it. When the time code is
received, the WWVB tower becomes permanently lit and the time will be displayed.
If the tower icon flashes, but does not set the time or the WWVB tower does not appear at all, then
please 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 towards 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:

In case the atomic weather station is not able to detect the WWVB-signal (disturbances,
transmitting distance, etc.), the time can be manually set (please refer to notes SET TIME).

WWVB RECEPTION icon with full signal strength will appear on screen if the reception of
atomic time is successful. The atomic weather station will have a daily synchronization at 02:03
and 03:03 everyday. Each reception cycle is minimum 2.5 minutes and maximum 10 minutes.