Precautions
T e positioning of GPS satellites varies depending on t e location and time you are using a GPS
receiver and t ere may be a delay in tracking or no tracking available at all.
Due to t e fact t at a GPS receiver needs to communicate to orbiting satellites wit a direct line of
sig t, avoid using t e device in areas w ere radio signals would be obscured. If possible, use t e device
in open sky environments. A few examples of areas w ere a GPS receiver mig t be obscured:
-In tunnels, indoor or under s ades of buildings.
-Between tall buildings or narrow streets surrounded by buildings.
-At underground locations, surrounded by dense trees, under an elevated bridge or at t e
locations w ere magnetic fields are generated suc as near ig voltage cables.
-Near t e devices t at generate t e radio signals of t e same frequency band as t e P oto
Finder, GPS Picture Tracker: near t e 1.5GHz band mobile telep ones, etc.
-T e P oto Finder may also not be able to track w en you are moving at t e speed of
500km/ r (300 miles/ r) or faster.
Margin of Error caused by the positioning of GPS satellites
T e ATP P oto Finder automatically tracks your present location w en radio signals from t ree or more
GPS satellites are received. T e margin of error for t e location calculated by t e P oto Finder is about
10m and does vary on t e environment.
Tracking Interpolation
T e ATP P oto Finder, w en activated, records your position information every 5 seconds. W en a
picture is taken w ile t e P oto Finder is switc ed off, your position can still be interpolated using
software suc as Google Eart or Picasa2. A roug position can be calculated by measuring t e
distances between t e location before and after t e picture is taken. In t is case, t e actual position
may not matc completely wit t e location on t e map based on GPS information.
On error due to incorrect clock setting on a camera
W en t e clock setting on your digital camera is set incorrectly, t e correct position information from t e
P oto Finder cannot be applied towards your pictures. Adjust t e clock setting of your camera as
accurately as possible in order to ensure t e accuracy of t e position information. In order to for t is
setting to be sync ronized wit your P oto Finger, refer to t e GPS screen “UTC current time”*(1) and
adjust your camera to t e 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.
