User`s manual

CompeGPS Team S.L.

http://www.compegps.com

http://support.compegps.com

o Automatic calibration tool: If you select the „Automatic‟ option in the „altitude‟

selector menu, TwoNav will continuously calibrate the barometric altimeter using

the GPS position along time (see following point).

If after some time you select „Barometric altimeter‟, the introduced calibration will

be saved with the „automatic‟ option, but it won‟t be updated with the new GPS

measurements.

 Automatic (recommended): the barometric altitude will be used, but the barometer will

be automatically calibrated using the altitude data from the GPS by means of an

algorithm that optimizes the final result.

This is the recommended option for most users, as it minimizes the characteristic error of the

altitude data from the GPS and, at the same time it overcomes the limitations of the barometric

altimeter regarding atmospheric pressure and temperature, alien to altitude changes.

4.8.10 Bearing

„Main Menu > Settings > Navigation > Bearing‟

The „Bearing‟ data determines the orientation of the map when „orientate map‟ (track up) is

enabled. (see „orientate map‟ section).

TwoNav has three different ways of determining the bearing you are taking during navigation:

 GPS: The latest positions received from the GPS to calculate the bearing of our present

movement will be considered. As soon as we stop, this reference won‟t be reliable, as

there will be no movement it can refer to.

 Compass: The data taken from the electronic compass will be taken in order to

determine the orientation of the device.

 Automatic (recommended): When driving slowly the compass data will be taken. When

driving fast the GPS position will be used.

Note: Remember to calibrate the compass to get reliable data from it.

4.9 System

4.9.1 Volume

„Main Menu > Settings > System > Volume‟.

On this page you will find the following settable elements:

 Silence: By activating this option, all the sounds from the device will be turned off,

independently of the volume percentage set for every option.

 General: Regulate the general volume for the audible elements group. All the sounds are

regulated by the preset of this option.