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Acquiring Satellites on battery vs. plugged in
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FunkyBoss



Joined: 19 May 2008
Posts: 9
Location: USA
PostAcquiring Satellites on battery vs. plugged in  Sat Jun 21, 2008 1:53 pm    Reply to topic Reply with quote
I have noticed a significant difference between the time it takes my nuvi 750 to acquire a usable satellite signal when the unit is just running on batteries vs. when it's plugged into my car when turned on. When plugged in, it usually locks in within 5 - 10 seconds. But when on batteries, it can take a minute or two. I have tried this standing in the same spot each time in my driveway.

What would cause this? Does the power cord act like an extra antenna when plugged in? Does the satellite receiving chip (or whatever is in there) go into some kind of power saving mode when on battery?

Does anyone else see this behavior?
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Tim
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Site Admin


Joined: 31 Jul 2006
Posts: 17836
Location: 45.06°, -70.24°
Post  Sat Jun 21, 2008 2:17 pm    Reply to topic Reply with quote
That is plausible, though I haven't noticed a difference myself.
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Tabs



Joined: 27 Dec 2007
Posts: 237
Location: Phoenix, AZ
Post  Sat Jun 21, 2008 8:11 pm    Reply to topic Reply with quote
It might scale back the CPU power when on battery like a laptop does...
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Himm



Joined: 23 Jun 2008
Posts: 4
Location: Baltimore
PostPower & GPS Lock  Tue Jun 24, 2008 10:32 am    Reply to topic Reply with quote
I have the 780 and I can see no time difference at all. On Battery if you are in your house it would take longer to lock.
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Real_Jim_Shady



Joined: 20 Dec 2007
Posts: 30
Location: Michigan
Post  Sat Jun 28, 2008 12:21 am    Reply to topic Reply with quote
When I plug my 760 into a cigarette lighter plug to AC patch cord that I purchased from Garmin, it will acquire w/i a few seconds. If I use the Nuvi with its own battery or USB port, it takes much longer.
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