User manual

Copyright© 2007. All Rights Reserved by ATP Electronics Taiwan Inc.
5
Precautions
 The positioning of GPS satellites varies depending on the location and time you are using a GPS
receiver and there may be a delay in tracking or no tracking available at all.
 Due to the fact that a GPS receiver needs to communicate to orbiting satellites with a direct line of
sight, avoid using the device in areas where radio signals would be obscured. If possible, use the device
in open sky environments. A few examples of areas where a GPS receiver might be obscured:
- In tunnels, indoor or under shades of buildings.
- Between tall buildings or narrow streets surrounded by buildings.
- At underground locations, surrounded by dense trees, under an elevated bridge or at the
locations where magnetic fields are generated such as near high voltage cables.
- Near the devices that generate the radio signals of the same frequency band as the Photo
Finder, GPS Picture Tracker: near the 1.5GHz band mobile telephones, etc.
- The Photo Finder may also not be able to track when you are moving at the speed of
500km/hr (300 miles/hr) or faster.
 Margin of Error caused by the positioning of GPS satellites
The ATP Photo Finder automatically tracks your present location when radio signals from three or more
GPS satellites are received. The margin of error for the location calculated by the Photo Finder is about
10m and does vary on the environment.
 Tracking Interpolation
The ATP Photo Finder, when activated, records your position information every 5 seconds. When a
picture is taken while the Photo Finder is switched off, your position can still be interpolated using
software such as Google Earth or Picasa2. A rough position can be calculated by measuring the
distances between the location before and after the picture is taken. In this case, the actual position
may not match completely with the location on the map based on GPS information.
 On error due to incorrect clock setting on a camera
When the clock setting on your digital camera is set incorrectly, the correct position information from the
Photo Finder cannot be applied towards your pictures. Adjust the clock setting of your camera as
accurately as possible in order to ensure the accuracy of the position information. In order to for this
setting to be synchronized with your Photo Finger, refer to the GPS screen “UTC current time”*(1) and
adjust your camera to the same time.
Remark
(1) UTC: Coordinated Universal Time, from Universal Time/Temps Cordonn.
(2) Adjust your camera clock setting same as the UTC time. You won’t have to re-adjust
time clock of your camera when you go beyond a time zone.
(3) If you did not refer to the GPS UTC time, you will not get the correct GPS information
and cannot map the correct data to pictures.