Re: 2001 E38 GPS system?

"Jeff Strickland" <crwlr@[EMAIL PROTECTED]
> wrote in message 
news:1w2Tj.14223$Bb3.13032@[EMAIL PROTECTED]
>
> "R. Mark Clayton" <nospamclayton@[EMAIL PROTECTED]
> wrote in message 
> news:Xu-dnUHILcqPtoHVnZ2dneKdnZydnZ2d@[EMAIL PROTECTED]
>>
>> "Ivan Marsh" <annoyed@[EMAIL PROTECTED]
> wrote in message 
>> news:pan.2008.05.02.18.18.04.176524@[EMAIL PROTECTED]
>>> Hey,
>>>
>>> When I start my car the GPS system turns on and displays the accept
>>> agreement message.
>>>
>>> Is there any way to keep the GPS turned off until I need it?
>>>
>>> -- 
>>> "Remain calm, we're here to protect you!"
>>>
>>
>> In order to work a GPS receiver has acquire a first fix.  There are
three 
>> ways of doing this: -
>>
>> Permananently on - Receiver stays on all the time.
>> Warm start - receiver remembers previous position from last use and
uses 
>> this to update its position (and the time).
>> Cold Start - receiver makes no (or few) assumptions about its position 
>> and sets about acquiring position etc. from scratch - this can take
from 
>> several minutes to nearly an hour.  This is a feature of the Navstar 
>> system.
>
> Are you sure about it taking so long to find itself? I sold GPS fleet 
> management systems that could find themselves in a matter of a couple of

> minutes. My handheld Garmin would come up in about 90 seconds.
>
> I've never heard of a GPS receiver taking an hour, or more than about 5 
> minutes for that matter, to figure out where it was.

Things have improved especially since

http://www.ngs.noaa.gov/FGCS/info/sans_SA/docs/statement.html


>
> But, the question the OP asked is about turning the system off until he 
> wants it on. Currently it turns on when the ignition is on, and he does 
> not want that.
>
>
Well I am sure this can be arranged as long as he doesn't mind inaccuracy 
until it is all synched up - more likely it just a question of what the 
default display is.  On my BMW I would prefer if the default was current 
position...