"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.
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.
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