GPS FORUM

>The very nature of a windscreen mount ensures that a Sat Nav can be subject
>to considerable temperature fluctuations. When stopped for just a few
>minutes in full sun the casing of the unit can get quite hot to the touch.
>Are there any published environmental limits for GPS units available to Joe
>public?
>I have had to reload the data base after starting a somewhat warm unit. This
>may have been a coincidence or could it have been cause and effect?
>
>Richard
>
>

> The very nature of a windscreen mount ensures that a Sat Nav can be
subject
> to considerable temperature fluctuations. When stopped for just a few
> minutes in full sun the casing of the unit can get quite hot to the touch.
> Are there any published environmental limits for GPS units available to
Joe
> public?
> I have had to reload the data base after starting a somewhat warm unit.
This
> may have been a coincidence or could it have been cause and effect?
>
> Richard
>
>

>
> Hawkins wrote in message
> news:icKdnVBxL4p0lRnbnZ2dnUVZ8turnZ2d@bt.com...
>> The very nature of a windscreen mount ensures that a Sat Nav can be
> subject
>> to considerable temperature fluctuations. When stopped for just a few
>> minutes in full sun the casing of the unit can get quite hot to the
>> touch.
>> Are there any published environmental limits for GPS units available to
> Joe
>> public?
>> I have had to reload the data base after starting a somewhat warm unit.
> This
>> may have been a coincidence or could it have been cause and effect?
>>
>> Richard
>>
>>
> Richard
>
> Most electronic equipment manuals give figures for temperature and
> humidity
> levels at which units can be stored and operated. Typical figures might be
> from 5 degrees celsius to 40 degrees celsius, humidity 25% to 80%
> operating
> and 0 degrees celsius to 60 degrees celsius 10% to 90% humidity storage.
> The
> information is usually printed in very small 6 point type at the back of
> the
> user manual with the EC and FCC conformity and specifications.
>
> The actual figures will vary depending on the target market. Electronics
> equipment intended for use in extreme environments in the tropics or near
> arctic regions will have extended specifications.
>
> The main practical limitation for the GPS is the temperatures at which the
> LCD screen will work and give a legible display. Too hot and the screen
> turns dark, too cold and the screen freezes, literally. Other components
> in
> the unit can be affected by severe temperatures, capacitors and backup
> batteries react badly to heat. Generally speaking excessively high
> temperatures will tend to shorten the life of electronic equipment more
> rapidly than exposure to near freezing temperatures.
>
> If a unit malfunctions due to excess heat or cold (or even humidity)
> restoring it to temperatures in the human comfort range will generally
> allow
> it to begin functioning normally again.
>
> Mike
>
>

>
> Hawkins wrote in message
> news:icKdnVBxL4p0lRnbnZ2dnUVZ8turnZ2d@bt.com...
>> The very nature of a windscreen mount ensures that a Sat Nav can be
> subject
>> to considerable temperature fluctuations. When stopped for just a few
>> minutes in full sun the casing of the unit can get quite hot to the
>> touch.
>> Are there any published environmental limits for GPS units available to
> Joe
>> public?
>> I have had to reload the data base after starting a somewhat warm unit.
> This
>> may have been a coincidence or could it have been cause and effect?
>>
>> Richard
>>
>>
> Richard
>
> Most electronic equipment manuals give figures for temperature and
> humidity
> levels at which units can be stored and operated. Typical figures might be
> from 5 degrees celsius to 40 degrees celsius, humidity 25% to 80%
> operating
> and 0 degrees celsius to 60 degrees celsius 10% to 90% humidity storage.
> The
> information is usually printed in very small 6 point type at the back of
> the
> user manual with the EC and FCC conformity and specifications.

>
> The actual figures will vary depending on the target market. Electronics
> equipment intended for use in extreme environments in the tropics or near
> arctic regions will have extended specifications.
>
> The main practical limitation for the GPS is the temperatures at which the
> LCD screen will work and give a legible display. Too hot and the screen
> turns dark, too cold and the screen freezes, literally.

> Other components in
> the unit can be affected by severe temperatures, capacitors and backup
> batteries react badly to heat. Generally speaking excessively high
> temperatures will tend to shorten the life of electronic equipment more
> rapidly than exposure to near freezing temperatures.
>
> If a unit malfunctions due to excess heat or cold (or even humidity)
> restoring it to temperatures in the human comfort range will generally
> allow
> it to begin functioning normally again.
>
> Mike
>
>

> In message , Hawkins
> writes
>>The very nature of a windscreen mount ensures that a Sat Nav can be
>>subject
>>to considerable temperature fluctuations. When stopped for just a few
>>minutes in full sun the casing of the unit can get quite hot to the touch.
>>Are there any published environmental limits for GPS units available to
>>Joe
>>public?
>>I have had to reload the data base after starting a somewhat warm unit.
>>This
>>may have been a coincidence or could it have been cause and effect?
>>
>>Richard
>>
>>
> My Navman F20 survived a grilling that killed the Nokia 3210 that was
> mounted next to it. The casing was literally too hot to hold.
> --
> Keith