La Crosse Technology C86234 - Manual (Page 19)

5. To remove an alarm setting for a wind direction, press the SET button again to remove
the selected wind direction alarm. The arrow icon inside the compass circle will
disappear.
6. If more than one wind direction is desired as an alarm setting, Press the
▲/DATE button
or
▼/RAIN button to move the wind direction alarm pointer to the next desired setting.
7. Press the SET button to confirm the next wind direction value. A pointer icon will appear
inside of the compass circle to indicate an alarm setting for that wind direction. You can
set as many wind direction alarms as you desire.
8. Press the ALARM button to confirm the setting. The digit will stop flashing.
9. Press the SET button to switch on or off the alarm. The (((
))) icon indicates the alarm is
switched on.
10. Press the ALARM button to move to the 24-hour rainfall alarm.
24 HOUR RAINFALL ALARM
1. The 24-hour rainfall alarm display will show.
2. Press and hold the SET button for about 2 seconds. The 24-hour
rainfall digit will flash.
3. Press the
▲/DATE button or ▼/RAIN button to set the 24-hour
rainfall alarm value.
4. Press the ALARM button to confirm the setting. The digit will
stop flashing.
5. Press the SET button to switch on or off the alarm. The ((( )))
icon indicates the alarm is switched on.
6. Press the ALARM button to exit the alarm setting mode.
HYSTERESIS
To compensate for fluctuation of the weather data, which may
cause the weather alarm to ring constantly if the measured
reading is close to the alarm level, a hysteresis function has
been implemented for each weather alarm.
For example, if the high temperature alarm is set to 77°F and
the temperature reaches 77°F, the alarm will be activated. If the
temperature then drops to 76.8°F (a change of less than 1.8°F) and then increases to 77°F
again, the data will blink, but no alarm will be activated.
The temperature would have to drop below 75.2°F (with a pre-set hysteresis of 1.8°F) so that
the alarm can be produced again. Hysteresis values for the various weather data types are
given in the table.
Note: The temperature or humidity data will keep flashing even after the weather alarm has
been switched off by a button press. The flashing value indicates that the current weather
condition is out of the pre-set weather alarm limit(s).
Weather data Hysteresis
Temperature 1.8°F
Humidity 3% RH
Pressure 0.029 inHg
Wind speed 6.2 mph
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