Trouble shooting – basic – Highgear Aerial User Manual
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english
Trouble shooTInG – basIc
The ATF8 / Alterra / Altiforce / Aerial is a very sensitive and sophisticated instrument. If properly
cared for it should last and remain accurate for many years. However, from time to time problems may
happen. It has been our experience that the majority of the problems seen by consumers with products
such as these are related to dead or dying batteries.
While the estimated life of a fresh battery in the unit is approximately one year, this can be shortened
considerably if the compass, altimeter or EL systems of the unit are used extensively. Whenever you
are experiencing issues related to the function of the unit it is recommended that you install a fresh
battery as a first course of action, especially if it has been more than a half a year since the last time
the battery was replaced.
Be aWare – Lithium batteries of the type used in this watch are very susceptible to improper storage.
Many times, batteries purchased as new are dead or weak before they are purchased. Do not assume
that batteries in stores are good. If you try a new battery and problems persist, please try a second
battery from another source, just to be certain.
If the battery on the watch unit of the ATF8 / Alterra / Altiforce / Aerial is failing it may show itself in
several ways. Indications of a weak battery are:
1. A fading or blank display.
2. If the display goes blank when the EL system is operated and then comes back on when the EL
system turns off.
3. Inaccurate readings from the Altimeter or Compass systems
Because the compass is magnetic it may be effeced by local sources of electromagnetic radiation (EMI).
Avoid using near appliances, in cars, near home security systems and other sources of EMI.
The ATF8 / Alterra / Altiforce / Aerial is equipped with a display which allows it to be used in a wide
variety of environments. However, if the unit is used in extreme cold (<32 F or 1c) the function of the
display may be slower than normal. If exposed to extreme heat or cold, the display may also darken.
The display should return to normal once the temperature returns to normal levels.