La Crosse Technology TX31U-IT User Manual

QUICK SET UP MANUAL –

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Using 915MHz wireless transmission of weather data, this unique weather station can
be powered using batteries for all your weather needs in the home or office.

This product offers:

PROFESSIONAL WEATHER CENTER

INSTANT TRANSMISSION is the state-of­the-art new wireless transmission
technology, exclusively designed and
developed by LA CROSSE TECHNOLOGY.
INSTANT TRANSMISSION offers you an
immediate update (every 4.5 seconds!)
(every 6.5 seconds for rain!) of all your
outdoor data measured from the
transmitters: follow your climatic variations
in real-time!

1

Carefully open and check that the following contents are complete:

Item: Consisting of: Fittings: Illustration:
Base Station

Thermo­Hygro
Sensor

(TX31U-IT)

Wind Sensor

(TX23U)

1) Main unit

1) Main unit

2) Air Flow
cover

1) Main unit
with wind
vane

2) 32 ft cable
(already
attached the
main unit)

3) Mast holder

1) Wall mounting
screws

2) Plastic anchors
for screws

3) 2 x cable ties

1) 1 x U-bolts for
mast holder

2) 2 x Washers

3) 2 x Nuts

4) 2 x cable ties

2

Rain Sensor

(TX32U-IT)

SETTING UP:

1) Base and
funnel

1) 2 x Screw s
and Plastic
anchors

Wireless transmission

at 915 MHz - thermo-

hygro and rain sensor

to the Weather Ce nter

Rain senso

Cable connection between the wind sensor and the thermo-hygro sensor

3

Weather Center

Wind sensor

Note:

When putting the Weath er Center into operation , i t is important to perform in clos e
proximity (e.g. on a table) a complete wiring and set-up of the system. This step is
important to test all components for correct function before placing and mounting them
at their final destinations (Se e Positioning below). Spin the wind vane and tip the rain
gauge to test.

1. Unwind the cables of the Wind sensor. Connect the Wind sensor to the Thermo­hygro transmitter by plugging the connector head into the socket of the Thermo­hygro sensor. The cord should “click” into place.

2. First insert the batteries into the Thermo-hygro sensor and Rain sensor (“How
to install and replace the batteries into the Thermo-hygro sensor“ and
“How to install and replace the batteries into the Rain sensor” below ).

3. Then insert the batteries into the Weather Center (see “How to install and
replace the batteries into the Weather Center” below). Once the batteries are
installed, all segments of the LCD will light up briefly and a short signal tone will

Sockets for wind sensor

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be heard. It will then display the time as 12:00, the date as 1.1.05, the weather
icons, and air pressure value. "- - -" will be shown for outdoor data.

4. Afterwards, the Weather Center will start receiving data from the transmitter.
The transmission reception icon wi ll be blinking to indicate that the station is
trying to get the thermo-hygro transmitter data. The outdoor temperature,
humidity, wind data should then be displayed on the Weather Center. If this
does not happen after 135 seconds, the batteries will need to be removed from
all units. You will have to start agai n from step 2.

5. The transmitter reception icon is now blinking again to indicate that the station is
trying to get the rain sensor data. It wi ll stop blinking once the rain sensor has
been detected. If this does not happe n a fte r 135 seconds, you will need to start
again from step 2.

6. You may need to check the cable for correct connection and all the components
for correct function by manually turning the wind-gauge by moving the wind­vane; tilting the rain sensor to hear the impact of the internal moving seesaw,
etc. (see Positioning below).

7. Time and date shall be manually set (See Manual Setting below).

8. After the Weather Center has been checked for correct function with regard to
the above points and found fit, the initial set up of the weather station system is
finished and the mounting of the system components can take place. It must be
ensured however that all compone n ts work properly together at their chosen
mounting or standing locations. If e.g. there appear to be problems with the 915
MHz radio transmission, they can mostly be overcome by slightly changing the
mounting locations or turning the base station.

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Note:

The radio communication between the receiver and the transmitters in the open field
reaches distances of max 330 feet, provided there are no interfering obstacles such
as buildings, trees, vehicles, high voltage lines, etc.

9. Radio interferences created by PC screens, radios or TV sets can in some
cases entirely cut off radio communication. Please consider this when choosing
standing or mounting locations into consideration when choosing standing or
mounting locations.

Note :

 After batteries are installed in the transmitter, insta ll the batteries in the weather

center to receive the signal from the transmitters as soon as possible. If the
weather center is powered more than 5 hours after the transmitter is powered,
the weather center will never rece ive signal successfully from the transmitters.
In this case, user will need to reinstall the batteries from all the transmitters to
redo set-up procedure.

 After batteries are installed, there will be synchronization between weather

center and the transmitters. At th is tim e, the sig na l re cept ion i co n will be bl inki ng.
When the signal is successfully received by the weather center, the icon will be
switched on. (If it is not successful, the icon will not be shown in LCD) So the
user can easily see whether the last reception was successful (icon on) or not
(icon off). On the other hand, the short blinking of the icon shows that a
reception is in progress.

Transmitt er si g n al
reception icon

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 If the signal reception is not successful on the firs t frequency (915MHz) for 45

seconds, the frequency is changed to 920MHz and the learning is tried another
45 seconds. If still not successful, the reception is tried for 45 seconds on
910MHz. This will also be done for re-synchronization.

HOW TO INSTALL AND REPLACE THE BATTERIES INTO THE
THERMO-HYGRO SENSOR

Note:

In the event of changing batteries in any of the units, all uni ts need to be reset by
following the setting up procedures. This is because a random security code is
assigned by the thermo-hygro sensor at start-up and this code must be received and
stored by the Weather Center in the first several minutes of power being supplied to it.

The outdoor Thermo-hygro sensor works wit h 2 x AA, IEC
LR6 1.5V Alkaline batteries. To install and replace the
batteries, please follow the steps below:

1. Uninstall the rain cover of the transmitter.

2. Remove the battery compar tment cover.

3. Insert the batteries, observing the correct polarity (see
the marking in the battery compartment).

4. Replace the battery cover.

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HOW TO INSTALL AND REPLACE THE BATTERIES INTO THE RAIN
SENSOR

Figure 1

The rain sensor works with 2 x AAA, IEC LR3, 1.5V Alkaline batteries. To install and
replace the batteries, please follow the steps below :

1. Press tabs back to unlock rain sensor cover. (Figure 1)

2. Lift rain sensor cover to access battery compartment. (Figure 2)

3. Insert the batteries, observing the correct polarity (see the marking in the battery
compartment). (Figure 3)

4. Replace the battery cover and the rain cover onto the unit.

Note:

In the event of changing batteries in any of the units, all uni ts need to be reset by
following the setting up procedures. This is because a random security code is
assigned by the rain sensor at start-up and this code must be received and stored by
the Weather Center in the first several minutes of power being supplied to it.

Figure 2

Figure 3

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HOW TO INSTALL AND REPLACE THE BATTERIES INTO THE

A

WEATHER CENTER

The Weather Center works with 3 x AA, IEC LR6, 1.5V
Alkaline batteries. When the batteries need to be replaced,
the low battery symbol will appear on the LCD. To install
and replace the batteries, please follow the steps below:

1. Remove the battery compartment cover.

2. Insert the batteries observing the correct polarity
(see the marking in the battery compartment).

3. Replace the battery cover.

BATTERY CHANGE:

It is recommended to replace the batte ries in all units every 24 months to ensure
optimum accuracy of these units.

Note:

The stored History record will not be kept after the battery change is done on the
Weather Center.

Please participate in the preservation of the environment. Return
used batteries to an authorized depot.

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FUNCTION KEYS:

Weather Center:

The Weather Center ha s 5 e asy-to-use function keys.

SET
key

+ key

HISTORY key

LARM key

MIN/MAX key

SET key

 Press and hold to enter manual setting modes: LCD contrast, Manual time

setting, 12/24 hour time display, Calendar setting, ºF/ ºC temperature unit, Wind

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speed unit, Rainfall unit, Pressure unit, Relative pressure reference setting,
Weather tendency threshold setting, Storm warning threshold sett ing and Storm
Alarm On/ Off setting

 Press to toggle between the display of Mode 1 or Mode 2:

Mode 1: "Wind speed + outdoor temp + rel. pressure"
Mode 2: "Gust + Dew Point temp + rainfall" If pressure is showing with wind

gust, press the plus button to view 24 hour and total rain.
(Mode 2 displayed will be shown for 30 secon ds. Then it will return to normal
display automatically.)

 In normal display mode, press and hold to switch on/ off the Buzzer
 In the weather alarm setting mode, pres s and hold to adjust different alarm

value and switch the alarm On/ Off

 Press to activate the reset mode when max or min record is shown

 Stop the alarm during the ti me a larm or weather alarm ringing

+ key

 In display Mode 1, press to toggle between the display of Preset alarm time,

date, weekday + date, Indoor temp, or second in the time display

 In display mode 2, press to toggle between the display of Rel. Pressure, 24 hour

rainfall and Total rainfall

 Press to adjust (increase) the level of different settings
 Stop the alarm during the ti me a larm or weather alarm ringing

 Press to confirm to reset the max/min record
 Press to reset the total rainfal l amount to 0

HISTORY key

 Press to display the weather data history records
 Stop the alarm during the ti me a larm or weather alarm ringing

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 Press to exit manual setting mode and alarm setting mode

ALARM key

 Press to enter the time alarm and weather alarm setting mode
 Confirm particular alarm setting
 Press to exit the manual se tti ng mode
 Stop the alarm during the ti me a larm or weather alarm ringing

 Press to exit max/ min record display mode

MIN/MAX key

 Press to display minimum and maximum records of various weather data
 Press to adjust (decrease) the lev el of different settings
 Stop the alarm during the ti me a larm or weather alarm ringing

LCD SCREEN

The LCD screen is split into 5 sections displaying the following information:

1. Time and date/ indoor temp/ second

2. Wind data

3. Outdoor temperature, Dew point and humidity,

4. Air pressure, Rainfall data,

5. Air pressure history and Weather forecast icon.

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r

p

r

Low battery Indicator (weather center)

Time display

Wind Chill

in °F or °C

Outdoor temperature

or dew point

in °F or ºC

Outdoor temp.

alarm icon

Relative air pressure

display in inHg o

hPa, or total and 24h

rainfall display in inch

or mm

Air pressure

histogram

Low battery Indicator (Thermo-hygro)

Time alarm icon

Low battery Indicator (rain sensor)

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Calendar display

Buzzer off indicator

Wind direction display
and wind speed in
Beaufort scale

Wind speed Hi
alarm icon

Wind speed or gust in
m

h, km/h or m/s

Outdoor relative
humidity in %

Outdoor Humidity
alarm icon

Transmitt e r si g n al
reception icon

Weather tendency
indicator

Weather forecast
icon

* When the signal from the transmitter/ or Rain sensor is successfully received by the
Weather Station, this icon will be switched on. (If not successful, the icon will not be
shown on the LCD). User can therefore easily see whether the last reception was
successful (“ON” icon) or not (“OFF” icon). On the other hand, the short blinking of the
icon shows that a reception is being done at that time.
*In normal display user may press the SET key shortly to toggle between Mode 1 and
Mode 2 display:

Mode 1: Wind speed, outdoor temperature and relative pressure reading are shown.

Outdoor temp

icon

Rel Pressure

icon

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Wind speed icon

In Mode 1, this
reception icon is
showing the
condition of the
reception of th e
signal from
Thermo-hygro
transmitter

Mode 2 : Wind Gust, Dew Point temperature and Rainfall reading are shown.

Wind gust icon

Dew point icon

Rainfall icon

MANUAL SETTING:

The following manual settings can be changed once the SET key is pressed and hold
for about 2 seconds:

 LCD contrast setting
 Manual time setting
 12/24 hour time display
 Calendar setting
 °F/ °C temperature unit setting
 Wind speed unit
 Rainfall unit setting
 Air pressure unit setting
 Relative pressure reference value setting
 Weather tendency threshold value

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In Mode 2, this
reception icon is
showing the
condition of the
reception of the
signal from Rain
sensor

 Storm warning threshold value

 Storm alarm On/ Off setting

LCD CONTRAST SETTING

The LCD contrast can be set within 8 levels, from "LCD 1" to "LCD 8" (default setting
is LCD 5):

1. Press the SET key, the contrast level digit will start flashing.

2. Use the + or MIN/MAX key to adjust the level of contrast.

3. Confirm with the SET key and enter the MANUAL TIME SETTING.

MANUAL TIME SETTING:

You then may manually set the time of the clock by following the steps below:

1. The hour digit will start fl as hing.

2. Use the + or MIN/MAX key to set the hour.

3. Press the SET key to switch to the minutes. The minute digit will start flashing.

4. Use the + or MIN/MAX key to set the minute.

5. Confirm the time with the SET key and enter the 12/24 HOUR TIME DISPLAY

flashing

SETTING.

Hou

Minutes flashing

Flashing

16

A

12/24 HOUR TIME DISPLAY SETTING:

The time can be set to view as 12-hour or 24-hour format. The default time display
mode is 12-h. To set to 24-h time display:

1. Use the + or MIN/MAX key to toggle the value.

2. Confirm with the SET key and enter the CALENDAR SETTING.

CALENDAR SETTING:

The date default of the Weather Center is 1. 1. of year 2005. The date can be set
manually by proceeding as follows.

1. The year digit starts flashing.

2. Use the + or MIN/MAX key to set the year. The range runs from "00" (2000) to

3. Press the SET key to confirm the year and enter the month setting. The month

4. Use the + or MIN/MAX key to set the month.

5. Press the SET key to confirm the month and enter the date setting mode. The

"Date. Month." (for 24h time display)
"Month. Date." (for 12h time display)

"99" (2099).
digit will start flashing.

date digit will start flashing.

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Digit flashing

nnée

6. Use the + or MIN/MAX key to set the date.

7. Confirm all calendar settings with the SET key and enter the °F/°C

TEMPERATURE UNIT SETTING.

°F/°C TEMPERATURE UNIT SETTING

The temperature display can be selected to show temperature data in °F or °C.
(default °F)

1. The temperature unit is flashing

2. Use the + or MIN/MAX key to toggle between “°F” or “°C”.

3. Confirm with the SET key and enter the WIND SPEED UNIT SETTING.

WIND SPEED UNIT SETTING

The wind speed unit can be set as mph (mile per hour), km/h (kilometer per hour), or
m/s (meter per second). The default unit is mph.

1. Use the + or MIN/MAX key to toggle between the unit “mph”, “km/h” or “m/s”

2. Confirm with the SET key and enter the RAINFALL UNIT SETTING.

Flashing

Flashing

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RAINFALL UNIT SETTING

The rainfall unit can be set as inch or mm. The default unit is mm.

1. Use the + or MIN/MAX key to toggle between the unit “inch” or “mm”

2. Confirm the unit with the SET key and enter the RELATIVE AIR PRESSURE

UNIT SETTING

RELATIVE AIR PRESSURE UNIT SETTING

The relative air pressure can be set as inHg or hPa. The default unit is inHg.

1. Use the + or MIN/MAX key to toggle between the unit “inHg" or “hPa”

2. Confirm the unit with the SET key and enter the RELATIVE PRESSURE

REFERENCE VALUE SETTING.

RELATIVE PRESSURE REFERENCE VALUE SETTING

Note:

The default reference pressure value of the barometer is 29.91inHg when batteries
are first inserted. For an exact measurement, it is necessary to first adjust the

barometer to your local relative air pressure (related to elevation above sea
level). Ask for the current atmospheric pressure of your home area (Local weather

service, www, optician, calibrated instruments in public buildings, airport).

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Flashing

Flashing

The relative air pressure can be manually set to another value within the range of

27.14 to 31.90 inHg (919 to 1080 hPa) for a better reference.

Flashing

1. The current relative pressure value will start flashing

2. Use the + or MIN/MAX key to increase or decrease the value. Continually
holding the key will allow the value to increase faster.

3. Confirm with the SET key and enter the WEATHER TENDENCY SENSITIVITY

VALUE SETTING.

Note:

This feature is useful for those who live at elevations above sea level, but want their
air pressure display to be based on sea level elevation.

WEATHER TENDENCY SENSITIVITY LEVEL SETTING

Flashing

You may select a definite swi tching sensitivity value, .0 6 , .09, or .12 inHg for the
change in the display of weather icons. Th is represents the "sensitivity" of the weather
forecast (the smaller the value selected, the more sensitive the weather forecast).

Flashing

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The default value is 0.09 inHg. Select lower numbers in high humidity areas, i.e.

A

A

Oceanside. Select high numbers in arid areas, i.e. Desert.

1. The sensitivity value will start flashing

2. Use the + or MIN/MAX key to select the value.

3. Confirm with the SET key and enter the STORM WARNING SENSITIVITY

SETTING.

STORM WARNING THRESHOLD VALUE SETTING

You may also define a switching sensitivity value for the Storm warning display at a
decrease of air pressure from .09 in Hg to .27 inHg over 6 hours (Default 0.15 inHg).

1. The sensitivity value will start flashing .

2. Use the + or MIN/MAX key to select the value.

3. Confirm with the SET key and enter the STORM ALARM ON/OFF SETTING.

STORM ALARM ON/ OFF SETTING

You may also choose to switch On or Off the acoustic Storm warning alarm (Default
OFF).

1. The digit "AOF" will start flashing.

2. Use the + or MIN/MAX key to switch On or Off the alarm. ("AOF" = OFF; "AON"
= On)

Flashing

Flashing

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3. Confirm with the SET key and the normal display mo de will be shown.

Note:

In case a storm warning alarm is activated, the downward weather tendency arrow will
be flashing. (Also see WEATHER TENDENCY INDICATOR below)

TO EXIT THE MANUAL SETTING MODE

To exit the manual setting anytime during the manual setting modes, press the
ALARM key (or HISTORY key) or wait for the automatic timeout. The mode will return
to the normal time display.

TIME ALARM SETTING

The alarm time can be set by the use of the ALARM and SET key.

1. Press the ALARM key once. The “ALARM” icon and time digits are shown at the
top right of the LCD.

2. Press and hold the SET key for about 2 seconds. The hour digit of the alarm
time will start flashing. Press the + or MIN/MAX key to set the hour of the alarm
time.

larm-On icon

22

Flashing

larm time digit

3. Press the SET key to confirm and advance to the minute setting. The minute
digit will be flashing.

4. Press the + or MIN/MAX key to set the minute of the alarm time. Press the
ALARM key to confirm. Press the HISTORY key or wait for about 30 seconds
and the display will return to normal display mode automatically.

5. In the normal display mode, press the ALARM once key to go to the time alarm
setting mode again. Then press shortly the SET key to switch on or off the time
alarm. (The showing of the icon ((())) means th at th e time alarm is switched on.)

6. Press the HISTORY key or wait for about 30 seconds and the display will return
to normal display mode automatically.

Note:

The alarm ringing duration is 2 minutes. To stop the alarm, press any key during the
alarm ringing.

Important Note:

After you have followed the aforementioned set-up procedures, you shall read the
main manual for the following important functions of the weather station in details:

 Setting Weather alarm
 Viewing wind/ rainfall and air pressure data
 Viewing Max/ Max weather data
 Viewing History data record

Mounting the units:

Using 915MHz wireless transmission gives users li ttle restriction on placement as that
all units can be positioned virtually anywhere to within a 330 ft radius of the base
station. Please ensure that the cable inc luded in this set meets with your distance
requirements (see accessories in the main user manual for adding extension cables).

23

Important: Ensure all signals can be received and/or all cable distances meet with
your requirements at the poi n t of fixing particularly before you start drilling any
mounting holes.

Wind sensor

Secure the main unit to the shaft of the mast holder using the single screw provided
with the front of the sensor (marked E) facing in the East-West direction otherwise
wind direction will not be accurate. Now fix the entire unit to a suitable mast using the
U-bolt, washers and nuts found in this set.
Note: For best results mount the wind sensor onto a mast to allow the wind to freely
travel from all directions to enable an accurate reading (ideal mast size should be

5

from Ø

/8” to 11/4”). Ensure that the cable of the wind sensor meets your distance

requirements

Rain sensor

The rain sensor should be mounted horizontally about 2-3ft off from the ground (or
higher) in an open area away from trees or other coverings to allow rain to fall
naturally for an accurate reading.

Note: For best results ensure the base is horizontal to allow maximum drainage of
any collected rain

Thermo-hygro Sensor

To wall mount the thermo-hygro sensor, fix the wall holder onto the desired wall (2
screws are supplied), plug the sensor firmly into the wall holder and then carefully
replace the rain cover back over the thermo-hygro sensor.

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Note: After mounting the units, should the weather data not be received, user may
need to remove the batteries from all units and redo the set-up procedures after about
5 minutes.

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, 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 pu rchaser must contact La Crosse
Technology, Ltd for problem determ ination 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.

Replacement parts and products assume the remaining original warranty, or ninety
(90) days, whichever is longer. La Crosse Technology, Ltd will pay all expenses for
labor and materials for all repairs covered by this warranty. If necessary repairs are
not covered by this warranty, or if a product is examined which is not in need or repair,
you will be charged for the repairs or examination.

WARRANTY INFORMATION

25

The owner must pay any shipping charges incurred in getting your La Crosse
Technology, Ltd product to a La Crosse Technology, Ltd authorized service center.
La Crosse Technology, Ltd will pay ground return shipping charges to the owner of
the product to a USA address only.

Your La Crosse Technology, Ltd warranty covers all defects in material and
workmanship with the following specified exceptions: (1) damage caused by accident,
unreasonable use or neglect (including the lack of reasonable and necessary
maintenance); (2) damage occurring during shipment (claims must be presented to
the carrier); (3) damage to, or deterioration of, any accessory or decorative surface; (4)
damage resulting from failure to follow instructions conta ined in your owner’s manual;
(5) damage resulting from the performance of repairs or alterations by someone other
than an authorized La Crosse Technology, Ltd authorized service center; (6) units
used for other than home use (7) applications and uses that this product was not
intended or (8) the products inability to receive a signal due to any source of
interference.

This warranty covers only actual defects within the product itself, and does not cover
the cost of installation or removal from a fixed installation, normal set-up or
adjustments, claims based on misrepresentation by the seller or performance
variations resulting from installation-related circumstances.

LA CROSSE TECHNOLOGY, LTD WILL NOT ASSUME LIABILITY FOR
INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES
ASSOCIATED WITH THE OPERATION OR MALFUNCTION OF THIS PRODUCT.
THIS PRODUCT IS NOT TO BE USED FOR MEDICAL PURPOSES OR FOR
PUBLIC INFORMATION. THIS PRODUCT IS NOT A TOY. KEEP OUT OF
CHILDREN’S REACH.

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This warranty gives you specific legal rights. You may also have other rights specific
to your State. Some States do no allow the exclusion of consequential or incidental
damages therefore the above exclusion of limitation may not apply to you.

For warranty work, technical support, or information contact:

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 wit hout written
permission of the publisher.

La Crosse Technology, Ltd

2809 Losey Blvd. S.
La Crosse, WI 54601
Phone: [phone]

Fax: [phone]

[e-mail]

[e-mail]

(information on other pr o du cts)

www.lacrossetechnology.com

For more information, please visit:

www.lacrossetechnology.com

e-mail:

(warranty work)

web:

27

This handbook may contain mistakes and printing errors. The information in this handbook is
regularly checked and corrections made in the next issue. We accept no liability for technical
mistakes or printing errors, or their consequences.
All trademarks and patents are acknowledged.

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