Gps Issues; Preventing Gps Signal Problems - ProGin N-380 User Manual

provider. After the software is activated, you may use it as described below.
Press the GPS icon in the Main Menu of the ProGin N-380 to go to the menu of the navigation system.
(Note that the exact look of the navigation system will depend on the map source you chose when
activating the software.)

2. GPS Issues

● Signal reception problems. Under some circumstances, the N-380 may be unable to receive the
GPS satellite signals. These include:
☆ Inside a tunnel, under a bridge or inside a building.
☆ In a downtown area, where signal reception could be adversely influenced by high buildings or
obstacles
☆ In a dense forest, where signal reception could be adversely influenced by thick foliage.
☆ In a car with certain types of sheathing paper that can block the signals.
☆ Because of a change in US Department of Defense policy, this may reduce the precision or
availability of the GPS signals.
☆ Immediately after activating the system, as it may take a few minutes for the unit to locate and
synchronize with the satellite signals.
● Position inaccuracy. Under some circumstances, the N-380 may display inaccurate position
information. These include:
☆ On an express highway, where speed and surrounding vehicles may cause small signal distortions.
☆ In a city road grid, where the reported position might be located on a nearby road if the distance
between the two roads is less than GPS's maximum deviation distance.
☆ In an enclosed space, such as a ferry, where the satellite signal may be blocked or distorted.
☆ At a road split with a small angle, where the reported position might be on the other side of the split.
● Voice prompt. Under some circumstances, the navigation system's voice prompt may not function
as expected. These include:
☆ When you are driving on a limited access highway, the system may not detect if you are driving on
an exit ramp.
☆ If you merge onto a road with a different name, the system may give extraneous turn information.

3. Preventing GPS Signal Problems

Never operate the system close to a radio transmitter, as this can lead to abnormal operation.
As with any electronic equipment, never place it in an environment with static electricity or strong
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Copyright© 1998-2008
N-380 User Manual
08/18/2008 V1.0
ProGin