National Geographic IN102TOP manual  

 

To View the Current Alarm Time Settings

1. Press [ALARM] button to view the current alarm time-settings.

Moon Phase

The moon phases are displayed on the screen and show eight phases from new moon to waning crescent.

Weather For ecast

This unit is capable of detecting atmospheric pressure changes to predict the weather for the forthcoming 12 hours. The effective range covers an area of 30 to 50 km. The accuracy of a general pressure-based weather forecast is about 70 to 75 percent, and therefore, cannot be held responsible for any inconveniences caused by an inaccurate reading. The weather forecast is meant for the next 12 hours. It may not necessarily reflect the current weather situation.

Atmospheric Pressure Bar Chart

The atmospheric pressure bar chart records the atmospheric changes for the past 12 hours. The atmospheric pressure bar chart can be displayed in mb/hPa or inHg. To switch between the two units of measurement press, the [PRESSURE] button.

   

       

Atmospheric Pressure

The current atmospheric pressure is shown on the atmospheric pressure window.

If you want to know the pressure history for a particular hour during the past 12 hours, press the [HISTORY] button. Each press on the button will go back by one hour. If you hold down the [HISTORY] button the search will increase rapidly. Use the [PRESSURE] button to switch between mb/hPa and inHg. The pressure measuring range is: 795 – 1050 mb/hPa (23.5 – 31.0 inHg).

Initiation for Weather Forecast and Barometric Pressure

The barometer display on this unit will differ from local sources (TV, radio, Internet, etc.). Barometric pressure quoted in these types of mediums is “barometric pressure adjusted to sea level,” which is a theoretical atmospheric pressure that accounts for decreasing air pressure with elevation. Air pressure decreases 1.0 inHg for every 1,000 feet in elevation. Consequently, the air pressure at the top of a mountain is considerably less than at sea level. To account for this difference, tune into your local weather station via television, radio, or Internet to determine the barometric pressure for your area. To properly set the unit press and hold the [PRESSURE] button until the mb/hPa or inHg flashes. Press the [+/˚C/˚F] or the [-] button to select desired unit of measurement and then [PRESSURE] button to confirm and enter into barometric pressure-setting mode. Press the [+/˚C/˚F] or the [-] button to input the actual barometric-pressure determined from your local weather station. Press the [PRESSURE] button key to confirm the barometric pressure and enter the weather icon setting. Press the [+/˚C/˚F] or the [-] button to select icon that most closely resembles the current weather. Press [PRESSURE] button again to confirm and return to normal mode.

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