User manual

Press the ALARM key again to adjust the longitude decimal number. Press the + key or

MIN/MAX key to adjust the longitude decimal number up or down.

Note: North America is located in the western hemisphere. Therefore, there is no need to

change this setting for the United States and Canada.

6. Change Hour. Press the SET key again to set the hour. Press the + key or MIN/MAX key to

adjust the hour up or down.

7. Change Minute. Press the SET key again to set the minute. Press the + key or MIN/MAX

key to adjust the minute.

8. Change Year. Press the SET key again to set the calendar year. Press the + key or

MIN/MAX key to adjust the calendar year.

9. Change Month. Press the SET key again to set the calendar month. Press the + key or

MIN/MAX key to adjust the calendar month.

10. Change Day. Press the SET key again to set the calendar day. Press the + key or MIN/MAX

key to adjust the calendar day (note that the display format is Month/Day/Year).

11. Temperature Units (Celsius or Fahrenheit). Press the SET key again to toggle the

temperature units from Celsius to Fahrenheit.

12. Barometric Pressure Display Units (hPa or inHg). Press the SET key again to toggle the

pressure units between hPa or inHg.

13. Relative Pressure Calibration (default is 29.92 inHg). Press the SET key to adjust the

relative barometric pressure. Press the + key or MIN/MAX key to adjust the relative

barometric pressure up or down. Reference Section 4.2.1 Setting Barometric Pressure for

more details on this function.

14. Pressure Threshold Setting (default level 2). Press the SET key again to adjust the

pressure threshold setting. Press the + key or MIN/MAX key to adjust the pressure

threshold up or down. Reference Section 4.5.5 for more details on this function.

15. Storm Threshold Setting (default level 4). Press the SET key again to adjust the storm

threshold setting. Press the + key or MIN/MAX key to adjust the storm threshold up or

down. Reference Section 4.5.4 for more details on this function.

4.2.1 Setting Barometric Pressure

The display console displays two different pressures: absolute (measured) and relative (corrected to

sea-level).

To compare pressure conditions from one location to another, meteorologists correct pressure to

sea-level conditions. Because the air pressure decreases as you rise in altitude, the sea-level corrected

pressure (the pressure your location would be at if located at sea-level) is generally higher than your

measured pressure.

Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m), but