Cambridge 302 USB Port
On Dec 9, 2:00*pm, Eric Greenwell wrote:
On 12/9/2011 7:59 AM, T8 wrote:
Paul,
Here's the deal: *the back of my Ipaq 3950 says 5VDC, 2 amps.
The 302 docs tell us we are limited to 0.9 amp out of the 302.
You, and others, have led us into a marginal solution. *I think you
ought to quit doing that :-).
I have about 500 hours of *mostly* trouble free PDA operation off my
302... because I *mostly* remember to have the the PDA at full
charge. *I've sometimes forgotten (mostly during a two day drive
somewhere) and then had mysterious problems with the 302 (mostly 1200
miles from home).
The back of my 3850 also says 5 vdc, 2 amps, but in 1200 hours/250
flights of use, I've never had a problem with it and my 302. At home, it
goes from the charging stand to the glider, but while traveling, it can
be 4 or 5 or more days between flights - still no problem.
Maybe my 3850 doesn't draw as much as a 3950, maybe your 3950 has a
battery problem so it's getting too low, too quickly, maybe there is a
problem with your 302 - can't tell - but I would not conclude it's a
marginal solution.
--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)
Or maybe this is exactly the sort of behavior that can be expected
when ratings are exceeded. Occasional failures in some, but not all
devices. It could be installation and environment dependent, too.
-Evan Ludeman / T8
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