Q. My Garmin Nüvi GPS does not communicate with GPSMaster?

A. It never will.

Q. How do I get communication over USB tow ork?

A. A few things you need to be done.

Q. How do I use the mouse? ( A very good question! Read the following carefully. )

A. When you move the mouse across the scene, the coordinate the mousepointer is above will be displayed on the main screen.

Q. Any keys I need to know about?

A. Just a few.

Q. Do you have a document describing all the GPSMaster functionality?
A. Not yet. GPSMaster however is easy to use. Just try. It's very intuitive.
Q. Tell me more about maps.

A. A map is nothing more than an image representing (a part of) the earth. In order to let it represent the correct part of the earth it has to be calibrated.

When you create a map you first have to choose the image you want it to hold. This image can be a bitmap or jpeg. It can be any size but it is recommended (especially for larger images) that its width and height in pixels are a power of 2 (eg 1024, 2048, 4096). If your image is eg 1000x2000 pixels, that's ok, but GPSMaster needs to rescale it itself (it does that automatically, every time such an image is to be displayed) to power of 2 sizes, eg 1024x2048. This can be time consuming, depending on the speed of your CPU and VGA card. It is recommended to rescale the image yourself (outside GPSMaster, using Adobe Photoshop or any other suitable program. This way GPSMaster will be able to load and activate the map much quicker! Very important : before rescaling remember the image's original width and height! These values are used by GPSMaster do display the map in the correct aspect ratio.

A map in GPSMaster also has a map datum. Its sole purpose is to remind you of the map datum of the scanned map. Only when the map datum on the scanned map and the map datum selected in GPSMaster are the same, the gridlines (on the scanned map and the ones drawn by GPSMaster) will coincide.