La Crosse Technology WS-7075U User manual

WS-7075U
Wireless 433 MHz
Radio-controlled Weather Station
Instruction Manual

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TABLE OF CONTENTS
Topic Page
Inventory of Contents/Additional Equipment 3
About WWVB 3-4
Quick Set-Up Guide 4
Detailed Set-Up Guide
Battery Installation 4-5
Program Mode
Function Keys 6
12/24 hour Time Setting 6
Time Zone Setting 6-7
Daylight Saving Time Setting 7
Time Setting (WWVB & Manual) 8-9
Setting Day, Date, and Year 9-10
Selecting °F or °C 10
Setting the LCD Contrast 10
Features
Weather Forecast Icons 11-12
Indoor Temperature, Humidity, & Comfort
Level Indicator 12
Outdoor Temperatures 13
Minimum & Maximum Records (Indoor,
Outdoor, & Resetting) 13-14
Alarm (Setting, Snoozing, & Stopping) 14-15
Additional Remote Control Sending Units
(Set-Up, Viewing, & Operation) 15-16
Mounting 17-18
Troubleshooting 19
Maintenance & Care 20
Specifications 21
Warranty Information 22

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INVENTORY OF CONTENTS
1. The Weather Station (Figure 1).
2. One TX3U Remote Control Sender with mounting bracket (Figure 2).
3. Three each, ½” Philips screws.
4. One strip double-sided adhesive tape.
5. Instruction Manual and Warranty Card.
ADDITIONAL EQUIPMENT (not included)
1. Two, fresh AA 1.5V batteries.
2. Two, fresh AAA 1.5V batteries.
3. One, Philips screwdriver.
4. One, Flat screwdriver.
ABOUT WWVB (Radio Controlled Time)
The NIST (National Institute of Standards and Technology—Time and Frequency
Division) WWVB radio station 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 Weather
Station. However, due to the nature of the Earth’s Ionosphere, reception is very
limited during daylight hours. The Weather Station 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 is
continually measuring every second, of every day, to an accuracy of ten billionths of
Figure 1
Time LCD
Date LCD
Forecast LCD
Indoor LCD
Outdoor LCD
Figure 2
Holder
Mounting
Bracket

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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.
QUICK SET-UP GUIDE
1. Insert two AAA batteries into the Remote Control Sender.
2. Insert two AA batteries into the WEATHER STATION.
3. Wait 5 minutes, or until the outdoor temperature is displayed in the
OUTDOOR LCD (Liquid Crystal Display).
4. Wait 6-10 minutes (in ideal reception conditions) for the WWVB time
to be displayed in the TIME LCD. If the WWVB takes longer to set,
you may manually set the time (see complete instructions), or you can
wait until after the weather station conducts its programmed search at
the ideal reception time period of 12:00am to 6:00am.
5. Mount the units, ensuring that all units are sending and receiving
signals.
Note: The Remote Control Sender transmits a signal every 3 minutes; after
the batteries have been installed, the Weather Station will search for the
signal for a duration of 5 minutes. If there is no temperature reading in the
OUTDOOR LCD after 5 minutes, make sure the units are within range of
each other, or repeat the battery installation procedure.
DETAILED SET-UP GUIDE
I. BATTERY INSTALLATION
A. REMOTE CONTROL SENDER
1. Remove the mounting bracket. The bracket snaps on and off
easily.
2. Remove the battery cover, by
removing the Flathead screw
located on the backside of the
unit, in the lower-central position.
The rubber weather-seal creates a
tight seal for the battery cover,
and does not allow the battery
cover to fall away from the unit. Place the screw partially
Battery
Cover

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back into its hole, and angle it slightly—so the threads grab
the battery cover. With the screw, pull the battery cover off.
3. Observing the correct polarity install 2 AAA batteries. The
batteries will fit tightly (to avoid start-up problems make sure
they do not spring free).
4. Check the LCD screen of the Remote Control Sender to see if
there is a temperature reading. If there is no reading, check
the polarity of the batteries or replace with new batteries.
5. Check to make sure that the rubber weather-seal is in place,
and replace the battery cover, screw, and mounting bracket.
B. WEATHER STATION
1. Remove the battery cover. To do
this, insert a solid object in the space
provided at the lower-central position
of the battery cover, then push up and
pull out on the battery cover.
2. Observe the correct polarity, and
install 2 AA batteries.
3. Replace the battery cover.
Note: Immediately after the batteries have been installed, each
LCD (Liquid Crystal Display) will flash, and a tone will sound.
Within a few seconds the indoor temperature, indoor relative
humidity, and the weather icons (sun and clouds) will be
displayed. If not, then remove batteries for 10 seconds and
reinstall. If the outdoor temperature is not displayed within four
minutes, remove batteries from both units, wait 10 seconds, and
reinstall. The time will show -:-- and start searching for the
signal. If it successfully receives the time signal (usually at night),
it will display the correct time (default is Eastern).
Battery
Cover

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PROGRAM MODE
Programming Note: If 30 seconds is allowed to pass, or either the IN or
the OUT buttons are pressed during programming modes the unit will
confirm/set the last information entered—the display will stop flashing and
return to normal time-date readings. If you don’t leave the program mode
during the programming of sections III through VIII, you can advance to
step 3 of the next program setting. If you do leave the program setting (or
want to program a specific setting) follow each instructional step to
program that setting.
I. FUNCTION KEYS
The Secondary Buttons are located directly below the Primary Buttons, and
behind the La Crosse Technology shield on the face of the unit. To access
the Secondary Buttons: place a solid object in the slot (above the shield)
and gently pull out and down.
II. 12 OR 24 HOUR TIME SETTING
1. Press and hold the SET button for 3 seconds, or until “12 h”
flashes in the DATE LCD.
2. Press the CH button to toggle between 12 and 24-hour time.
3. Press the SET button to confirm the 12/24-hour setting, and to
advance to Time Zone Setting.
III. TIME ZONE SETTING
The default time zone is EST, “-5hr” (Eastern Standard Time), to
change this setting:
1. Press and hold the SET button for 3 seconds, or until “12 h”
OR “24 h” flashes in the DATE LCD.
Primar
y Buttons
Secondary Buttons

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2. Press the SET button 1 more time to enter the Time Zone
setting mode. The default Time Zone “-5” will flash in the
DATE LCD.
3. Select your appropriate time zone using the CH button.
During selection of the Time Zone, the 3 letter abbreviations
for the time zones found in North America will flash across
the top of the TIME LCD. Observe the chart below, showing
the corresponding abbreviations, time zones, and codes.
TIME ZONES
GMT 0
Atlantic -4
EST; Eastern -5
CST; Central -6
MST; Mountain -7
PST; Pacific -8
ALA; Alaska -9
HAW; Hawaii -10
Note: There are more time zones represented by numbers than there are
represented by 3 letter abbreviations. If you live in North America you
need only be concerned with the ones in the chart above.
4. Press the SET button to confirm, and advance to the Daylight
Saving Time setting.
IV. DAYLIGHT SAVING TIME (DST) SETTING
1. Press and hold the SET button for 3 seconds, or until “12 h” or
“24 h” flashes in the DATE LCD.
2. Press the SET button 2 more times to reach the DST selection
mode. “DST 1” is the default setting and will be flashing in
the DATE LCD.
3. Press the CH button to select “DST 0” or “DST 1.”
4. “DST 0” indicates that the feature is off and the WWVB will
not change times automatically. “DST 1” indicates that the
feature is on and the WWVB will change times automatically.

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Note: Some locations (Arizona and parts of Indiana) do not
follow Daylight Saving Time, and should select “DST 0.”
5. Press the SET button to confirm and advance to the Time
setting mode.
V. TIME
There are two methods by which the time can be set:
A) Automatically via WWVB reception, or
B) Manually.
A. WWVB (Remote Control Time)
This method requires you to do nothing, except wait for the signal
to be received, and to select a time zone. Reception usually takes
approximately 6-10 minutes during optimal conditions. The best
conditions for reception is at night, between midnight and 6:00
am—when there is less atmospheric interference. To keep your
time as accurate as possible, the Weather Station conducts a
WWVB search every night between these hours, and overrides any
manually set time. The WWVB tower icon (appearing in the TIME
LCD) will flash when a signal-search is in progress, will remain
steady when the signal has been received, and nothing will be
displayed in all other situations. If the WWVB time has not been
received after 10 minutes of battery installation, you may manually
set the time or leave the time function alone (reception will occur
regardless).
B. MANUAL TIME SETTING
1. Press and hold the SET button for 3 seconds or until “12h”
flashes in the DATE LCD.
2. Press the SET button 3 more times (until the hour digit
flashes in the TIME LCD).
3. Press the CH button to change the hour. Press the CH button
once and the hour will increase by one, twice and the hour
will increase by two, etc.

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4. Press the SET button to confirm the hour setting, and to
advance to the minute setting mode.
5. The minute digits should be flashing. Press the CH button to
change the minutes—increasing the minutes by increments of
1 with each press of the CH button.
6. Press the SET button to confirm the minutes and to advance to
the Day, Date, and Year setting mode.
Note: In 12h mode, “PM” will appear to the left of the time
during PM hours. If the time is not within the PM hours, nothing
will be displayed. Be sure to set the time to the correct AM/PM
time to ensure automatic reception at optimal times.
VI. SETTING THE DAY, DATE, AND YEAR
1. Press and hold the SET button for 3 seconds, or until “12 h” or
“24 h” flashes in the DATE LCD.
2. Press the SET button 5 more times to reach the Weekday
setting mode.
Note: “MO” (representing Monday) is the default setting for the
weekday, “1.1” is the default setting for the numeric month and
day, and “1999” is the default setting for the year. The day, date,
and year will be automatically set once the WWVB signal is
received. However, the day, date, and year can be manually set
and will flash respectively in the DATE LCD during manual
programming.
3. The weekday will be flashing in the DATE LCD, press the
CH button to change the weekday.
4. Press the SET button to confirm, and to enter the numeric-
month setting mode.
5. The numeric-month will be flashing in the DATE LCD. Use
the CH button to set to the current month.
6. Press the SET button to confirm the numeric-month, and to
enter the numeric-day setting mode.
7. The numeric-day will be flashing, use the CH button to set the
current day.

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8. Press the SET button to confirm and to enter the year setting
mode.
9. The default-year will be flashing, use the CH to set the
appropriate year.
10. Press the SET button to confirm and to advance to the °F or °C
setting mode.
VII. SELECTING °F OR °C
1. Press and hold the SET button for 3 seconds, or until “12h” or
“24h” flashes in the DATE LCD.
2. Press the SET button 9 times to reach the °F or °C setting
mode.
3. “°F” is the default setting, and should be flashing in the
DATE LCD.
4. Press the CH button to shift °F to °C, and back.
5. Press the SET button to confirm your selection, and to
advance to the LCD contrast setting.
VIII. SETTING THE LCD CONTRAST
1. Press and hold the SET button for 3 seconds, or until “12h” or
“24h” flashes in the DATE LCD.
2. Press the SET button 10 more times to reach the LCD contrast
setting mode.
3. The default setting—“Lcd 5”—will flash in the DATE LCD.
4. There are 8 LCD contrast levels to choose from—“Lcd 0” is
the lightest, and “Lcd 7” is the darkest.
5. Press the CH button to toggle through the settings.
6. Press either the IN or OUT buttons to confirm all the settings
and to exit the manual-programming mode (or wait 15
seconds for the unit to automatically return to the normal
display mode).