La Crosse Technology DCF-77 User manual

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WIRELESS 868 MHz WEATHER STATION
Instruction Manual
INTRODUCTION:
Congratulations on purchasing this Weather Station with wireless 868
MHz transmission of outdoor temperature and display of indoor
temperature, weather forecast icons and weather tendency indicators. It
is further featuring a DCF-77 radio controlled clock and alarm function.
With four easy to use function keys, this innovative product is ideal for
use in the home or office.
« Instant Transmission+» is the up and coming state-of-the-art
new wireless transmission technology, exclusively designed
and developed by LA CROSSE TECHNOLOGY.
“IT +” offers you an immediate update of all your outdoor data
measured from the transmitters: follow your climatic variations
in real-time!

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LCD
Display
FEATURES:
The Weather station
• DCF-77 Radio controlled time function with manual time setting
options
• DCF time reception ON/OFF
• 24 hour display
• Alarm function with snooze
• Time zone +/- 12 hours
• Temperature display in degree Celsius (°C)
• Indoor and outdor temperature with MIN/MAX records
• Manual reset of MIN/MAX records
• 3 weather forecast with weather tendency indicator
• Wireless transmission at 868 MHz
• Signal reception intervals at 4 seconds
• Low battery indicator
• Wall mounting or table standing (foldout stand)
Function keys
Foldout stand
Battery
compartment
cover
Hanging hole

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The Outdoor Temperature Transmitter
• Remote transmission of outdoor
temperature to Weather station by 868
MHz signals
• Shower proof casing
• Wall mounting and table-standing
SETTING UP:
Note: This weather station receives only one outdoor transmitter.
1. First, insert the batteries into the Temperature transmitter. (see
“Install and replace batteries in the Temperature transmitter“).
2. Immediately after and within 30 seconds, insert the batteries into
Weather station (see “Install and replace batteries in the
Weather station”). Once the batteries are in place, all segments of
the LCD will light up briefly. Following the time as 0:00 and the
weather icon will be displayed. If these are not displayed after 60
seconds, remove the batteries and wait for at least 30 seconds
before reinserting them.
3. After inserting the batteries, the Weather station will start receiving
data from the transmitter. The outdoor temperature and the signal
reception icon should then be displayed on the Weather station. If
this does not happen after 3 minutes, the batteries will need to be
removed from both units and reset from step 1.
4. In order to ensure sufficient 868 MHz transmission however, this
should under good conditions be a distance no more than 100
meters between the final position of the Weather Station and the
transmitter (see notes on “Mounting” and “868 MHz Reception”).

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5. Once the remote temperature has been received and displayed on
the Weather station, the DCF time (radio controlled time) code
reception is automatically started. This takes typically between 3-5
minutes in good conditions.
Note:
Daily DCF reception is done at 02:00 and 03:00 every day. If the
reception at 03:00 is not successful, then at 04:00 and 05:00 and 06:00
there are other tries, until one is successful. If the reception at 06:00 is
still not successful, then the next try takes place at 02:00 next day.
If reception is successful, the received time will override the manually set
time. (Please refer also to notes on “DCF-77 Radio Controlled Time”
and “Manual Time Setting”).
HOW TO INSTALL AND REPLACE BATTERIES IN THE WEATHER
STATION
The Weather Station uses 3 x AA, IEC LR6, 1.5V batteries. When
batteries will need to be replaced,
the low battery icon will appear on
the LCD. To install and replace the
batteries, please follow the steps
below:
1. Lift up the battery
compartment cover.
2. Insert batteries observing
the correct polarity (see
marking).
3. Replace compartment cover.
HOW TO INSTALL AND REPLACE BATTERIES IN THE
TEMPERATURE TRANSMITTER
The Temperature Transmitter uses 2 x AA, IEC LR6, 1.5V battery. To
install and replace the batteries, please follow the steps below:

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SET key
1. Remove the battery compartment cover at the
back of the transmitter.
2. Insert the batteries, observing the correct
polarity (see marking).
3. Replace the batterycompartment cover on the
unit.
Note:
In the event of changing batteries in any of the units, all units need to be
reset by following the setting up procedures. This is because a security
code is assigned by the transmitter at start-up and this code must be
received and stored by the Weather station in the first 3 minutes of
power being supplied to it.
BATTERY CHANGE:
It is recommended to replace the batteries in all units regularly to ensure
optimum accuracy of these units (Battery life See Specifications below).
Please participate in the preservation of the
environment. Return used batteries to an authorised
depot.
FUNCTION KEYS:
Weather station:
The weather station has four easy to use function keys.
MIN/MAX
RESET
key
ALARM key
+
key

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Outdoor Reception
Signal icon*
MIN/MAX indoor
temperature
MIN/MAX outdoor
temperature
SET key
• Press the key to enter manual setting modes: Time zone, Time
reception ON/OFF and Manual time
• Stop the alarm
+ key
• To make adjustment for various settings
• Stop the alarm
ALARM key
• Enter the alarm setting mode
• Switch the alarm ON/ OFF
• Stop the alarm
MIN/MAX RESET key
• Press and hold to reset the MIN/MAX temperature records
• Activate the snooze
• Exit manual setting modes
LCD SCREEN AND SETTINGS:
Time
Indoor
Temperature in °C Outdoor
Temperature in °C
Weather tendency
indicator
Weather forecast icon
Low battery indicator
(weather
station)
Low battery indicator
(transmitter)
Radio controlled time
reception icon
Alarm icon

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* When the outdoor signal is successfully received by the Weather
Station, this icon will be switched on. (If not successful, the icon will not
be shown in LCD) So user can easily see whether the last reception was
successful (icon on) or not (icon off).
For a better displayclarity, the LCD screen is split into 3sections.
Section 1 - TIME AND ALARM
• In normal mode display of radio controlled time
• A reception tower symbol will be shown indicating that the DCF-77
time signal is scanned for (flashing) or received (steady).
Note: The symbol will not be shown when radio time reception is
not successful or when time reception function is turned off.
• In normal display, the alarm icon will be shown when the alarm is
turned on. Or when the snooze function is activated, the alarm icon
will be flashing.
Section 2 - WEATHER FORECAST AND WEATHER TENDENCY
ICONS
• Display of the weather to be expected in form of three weather
symbols and two weather tendency indicators in form of an arrow,
which change their appearance depending on the air pressure
development
Section 3 – INDOOR AND OUTDOOR TEMPERATURE
• Display the current indoor temperature and indoor MIN/MAX
records
• Display of low battery indicator (weather station)
• Display the current outdoor temperature and outdoor MIN/MAX
records
• A signal reception symbol will be shown indicating that receiver is
receiving outdoor temperature
• Display of low battery indicator (transmitter)

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MANUAL SETTINGS:
The following manual settings can be done in the setting mode:
• Time zone
• Time reception DCF ON/OFF
• Manual time
Press and hold the SET key for about 3 seconds to advance to the
setting mode:
TIME ZONE SETTING:
The time zone default is "0" hour. To set a different time zone:
1. The current time zone value starts flashing.
2. Use the +key to set the time zone. The range runs from 0, -1, -2…
-12, 12, 11, 10… 2, 1, 0, in consecutive 1-hour intervals.
3. Confirm with the SET key and enter the Time reception On/Off
setting.
TIME RECEPTION ON/OFF SETTING
In area where reception of the radio-controlled time (DCF time) is not
possible, the time reception function can be turned OFF. The clock will
then work as a normal Quartz clock. (Default setting is ON).
1. The digit “ON” digit will start flashing on the LCD.
2. Use the +key to turn OFF the time reception function if necessary.
3. Confirm with the SET key and enter the Manual time setting.
Time zone (flashing)
flashing

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Minutes (flashing)
Hours (flashing)
Alarm icon (ON) Alarm time
Note:
If the Time Reception function is turned OFF manually, the clock will not
attempt any reception of the radio-controlled time (DCF time) as long as
the Time Reception OFF function is activated. The Time Reception icon
and the DCF icon will not be displayed on the LCD.
MANUAL TIME SETTING
In case the Weather station is not able to detect the radio-controlled time
(DCF time) signal (disturbances, transmitting distance, etc.), the time can
be manually set. The clock will then work as a normal Quartz clock.
To set the clock:
1. The hour digits start flashing in the time display section.
2. Use the +key to adjust the hours and then press SET key to go to
the minute setting.
3. The minute will be flashing. Press the +key to just the minutes.
4. Confirm with the SET key and exit the setting mode.
Note :
The unit will still try to receive the signal despite a manual setting. When
the signal is received, the manually set time will automatically be
replaced by the received time. During reception attempts, the DCF tower
icon will flash. If reception has been unsuccessful, the DCF tower icon
will not appear but reception will still be attempted.
ALARM SETTING

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To set alarm:
1. Press and hold ALARM for about 3 seconds until the alarm time
display flashes.
2. The hour digit and the alarm icon will be flashing. Press the +key
to adjust the hour.
3. Press ALARM button once and minute digit will be flashing. User
shall then press +button to set the minute.
4. Press ALARM button once to confirm the setting.
5. To activate/ deactivate the alarm function, press the ALARM
button once. The display of the alarm icon represents that the
alarm is "ON".
Note: The duration of alarm sounding is 85 seconds
TO ACTIVATE THE SNOOZE FUNCTION AND STOPPING THE
ALARM:
1. When the alarm is sounding, press the MIN/MAX RESET key to
activate the snooze function. The alarm will stop and re-activate
after the snooze interval of 10 minutes.
2. To stop the alarm completely, press any keys other than the
MIN/MAX RESET key.
WEATHER FORECAST AND TENDENCY
THE WEATHER FORECASTING ICONS :
There are 3 weather icons in the second section of LCD which can be
displayed in any of the following combinations :
Rainy
Cloudy with
sunny intervals
Sunny