La Crosse Technology WS-9250U-IT - Manual (Page 4)

4
New
Moon Waning
Crescent First
Quarter Waxing
Gibbous Waxing
Crescent Last
Quarter Full
Moon Waning
Gibbous
doing this, the Weather Station will not mistake the new location as being a possible change in air-pressure when really
it is due to the slight change of altitude.
WEATHER TENDENCY INDICATOR
Working together with the weather icons is the weather tendency indicator (located on the left of the weather icons).
When the arrow points upwards, it means that the air pressure is increasing and the weather is expected to improve,
but when arrow points downwards, the air pressure is dropping and the weather is expected to become worse.
Taking this into account, one can see how the weather has changed and is expected to change. For example, if the
indicator is pointing downwards together with cloud and sun icons, then the last noticeable change in the weather was
when it was sunny (the sun icon only). Therefore, the next change in the weather will be cloud with rain icons since the
indicator is pointing downwards.
Note: Once the weather tendency indicator has registered a change in air pressure, it will remain permanently
visualized on the LCD.
AIR PRESSURE HISTORY (ELECTRONIC BAROMETER WITH BAROMETRIC PRESSURE TREND)
The bottom right section of the LCD shows the air pressure history bar graph.
The bar graph indicates the air pressure history trend over the last 12 hours in 5 intervals: 0h, -3h, -6h, -9h and -
12h. The “0h” represents the current full hour air pressure recording. The left column shows the unit in “inHg” (0, ±0.03,
±0.09, ±0.15). The “0” in the middle of this scale is equal to the current pressure and each change (±0.03, ±0.09, ±0.15)
represents how high or low, in “inHg” scale, the past pressure was compared to the current pressure.
If the bars are rising it means that the weather is getting better due to the increase of air pressure. If the bars go down,
it means the air pressure has dropped and the weather is expected to get worse from the present time “0h“.
Note:
x The level of the pressure bars will be affected by the temperature change. The reading is for the reference only.
x For accurate barometric pressure trends, the weather station should operate at the same altitude for recordings
(i.e. it should not be moved from the ground to the second floor of the house). When the unit is moved to a new
location, discard readings for the next 48 hours.
DISPLAY OF INDOOR TEMPERATURE
The indoor temperature is measured automatically and displayed on the upper left corner of the LCD.
DISPLAY OF OUTDOOR TEMPERATURE
The upper right of the LCD section shows the outdoor temperature and a reception symbol.
DISPLAY OF INDOOR/OUTDOOR MAXIMUM AND MINIMUM RECORDS
Press the MIN/MAX key several times to view the MIN/MAX indoor temperature, and MIN/MAX outdoor temperature
sequentially. Date and time of recordings will be shown for outdoor data.
RESETTING THE MAXIMUM/MINIMUM RECORDS
To reset the MIN/MAX records, press and hold the MIN/MAX key for 2 seconds. This will reset ALL minimum and
maximum temperature records to current readings.
DISPLAY OF SUN DURATION TIME
1. In
normal date mode, press the SUN key twice to display the sun duration time (total number of hours of sunlight
on the day).
2. Press the SUN key again will display the selected city. (See “LOCATION SETTNG FOR SUNRISE/SUNSET
TIME”)
3. Press the SUN key again to go back to normal date display.
THE MOON PHASE ICONS
The weather station displays 8 different moon phase icons. The current moon phase is indicated with a bar segment
according to the set calendar.
LOW BATTERY INDICATORS
Low battery indicator will show on the LCD when the batteries of weather station or transmitter require changing.
TEMPERATURE TRANSMITTER
The reception distance of the temperature transmitter may be affected by the temperature. At cold temperatures the
transmitting distance may be decreased. Please bear this in mind when placing the transmitter.
915 MHz RECEPTION
The weather station should receive the temperature data within 80 seconds after set-up.
If the temperature data is not
received 80 seconds after setting up (the outdoor temperature shows “- - -”), please check the following points:
1.
The distance of the weather station or transmitter should be at least 5 to 6.5 feet (2 –3 meters) away from any
interfering sources such as computer monitors or TV sets.
2. Avoid positioning the weather station onto or in the immediate proximity of metal window frames.
3. Using other electrical products such as headphones or speakers operating on the same signal frequency (915
MHz) may prevent correct signal transmission and reception.
4. Neighbors using electrical devices operating on the 915 MHz signal frequency can also cause interference.
Note:
When the 915 MHz signal is received correctly, do not re-open the battery cover of either the transmitter or weather
station, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then
reset all units (see Initial set up above) otherwise transmission problems may occur.
The transmission range is about 330 feet / 100 meters from the transmitter to the weather station (in open space).
However, this depends on the surrounding environment and interference levels. If no reception is possible despite the
observation of these factors, all system units have to be reset (see Initial set up).
POSITIONING
WEATHER STATION:
The weather station comes complete with a foldout stand that gives the option of table standing or
wall mounting.
To wall mount:
1. Fix a screw into the desired wall, leaving the head extended out by about 0.2” (5mm).
2. Using the weather station hanging hole, carefully hang it onto the screw.
Note: Always ensures that the unit locks onto the screw head before releasing.
Air pressure trend over the last 12 hours
Outdoor temperature in qF
Outdoor reception symbol
Indoor temperature in °F
A bar segment indicates
the current moon phase
Air pressure unit in inHg