Re: A portable GPS should use standard mini-USB power (but which ones do)?
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
|||||||||||||
|
Posted by sarah bennett on May 30, 2007, 12:19 pm
Please log in for more thread options On Wed, 30 May 2007 11:52:52 -0400, Dana wrote: Hi there Dana, I see we need to separate USB DATA from USB POWER. All GPS Owners Manuals & all the reviews I found seem to be clear on USB data transfer, and some seem to be somewhat clear on USB charging, but none seem to be clear on USB operation! I suggest future modern portable electronics reviewers ask basic questions: a. Does the portable unit CHARGE using standard (5v/500ma) mini-USB? b. Does the portable unit OPERATE using standard mini-USB? c. Does the portable unit transfer DATA using standard mini-USB? We'd all benefit from the answers. There is no downside to having this critical information for all portable electronic devices in the future. My goal is a single AC + DC + PC suppy & cable for my cellphone, mp3 player, earbud, camera, and handheld GPS! I won't buy anything that's not standard USB for charging, operation, and data! sarah | |||||||||||||
|
Posted by Dale DePriest on May 30, 2007, 2:13 pm
Please log in for more thread options sarah bennett wrote: > My goal is a single AC + DC + PC suppy & cable for my cellphone, mp3
> player, earbud, camera, and handheld GPS! I won't buy anything that's not > standard USB for charging, operation, and data! > > sarah Sarah, It seems you will not buy anything needing more than 500 mA which includes a lot of devices including just about any of the devices with backlighted color screens and hard drivers. Someday perhaps power requirements will be lower but for now you will only be able to buy very simple units. Dale -- _ _ Dale DePriest /`) _ // http://users.cwnet.com/dalede o/_/ (_(_X_(` For GPS and GPS/PDAs | |||||||||||||
|
Posted by sarah bennett on May 31, 2007, 12:05 am
Please log in for more thread options
On Wed, 30 May 2007 11:13:43 -0700, Dale DePriest wrote: > Sarah, It seems you will not buy anything needing more than 500 mA
Hi there Dale, I understand what you're saying. But let's remember our Blackberry "mini-usb" charger outputs 750ma c.c. so I think the "practical" upper limit at least 50% higher than the "official" USB 2.0 spec already. I've had no problems charging my blackberry from the PC, from the AC, or from the DC adapters. Still, don't you think these three yes/no questions are of use to users in a GPS review? a. Does the GPS CHARGE via mini-USB connector? b. Does the GPS OPERATE off the mini-USB power? c. Does the GPS transfer DATA through the mini-USB port? susan | |||||||||||||
|
Posted by Dale DePriest on May 31, 2007, 10:37 am
Please log in for more thread options
sarah bennett wrote: > On Wed, 30 May 2007 11:13:43 -0700, Dale DePriest wrote:
> >> Sarah, It seems you will not buy anything needing more than 500 mA
>
> Hi there Dale, > > I understand what you're saying. But let's remember our Blackberry > "mini-usb" charger outputs 750ma c.c. so I think the "practical" upper > limit at least 50% higher than the "official" USB 2.0 spec already. > > I've had no problems charging my blackberry from the PC, from the AC, or > from the DC adapters. > > Still, don't you think these three yes/no questions are of use to users in > a GPS review? > > a. Does the GPS CHARGE via mini-USB connector? > b. Does the GPS OPERATE off the mini-USB power? > c. Does the GPS transfer DATA through the mini-USB port? > > susan The questions are ok, but may not be as valuable as you think. For example a GPS might charge via the USB connector when hooked to a pc and still not charge when hooked to a separate 12 Volt adapter. (This is the case for iPods for example) It may also charge so slowly that it is not useful or charge but only when the unit is off. Dale -- _ _ Dale DePriest /`) _ // http://users.cwnet.com/dalede o/_/ (_(_X_(` For GPS and GPS/PDAs | |||||||||||||
|
Posted by Lionel on May 31, 2007, 1:08 am
Please log in for more thread options
On Wed, 30 May 2007 09:19:05 -0700, sarah bennett >On Wed, 30 May 2007 11:52:52 -0400, Dana wrote:
> >> The only place that I know of is on page 31, under "Loading Files." It
>> mentions "Connect the mini-usb connector to the side of the Nuvi." >> But I agree, this is not the place to mention it, as it's hard to find. >> It should be on the main "Technical Specifications" page, but it is not. >
>Hi there Dana, > >I see we need to separate USB DATA from USB POWER. > >All GPS Owners Manuals & all the reviews I found seem to be clear on USB >data transfer, and some seem to be somewhat clear on USB charging, but none >seem to be clear on USB operation! > >I suggest future modern portable electronics reviewers ask basic questions: >a. Does the portable unit CHARGE using standard (5v/500ma) mini-USB? >b. Does the portable unit OPERATE using standard mini-USB? >c. Does the portable unit transfer DATA using standard mini-USB? > >We'd all benefit from the answers. There is no downside to having this >critical information for all portable electronic devices in the future. Not for the users, certainly. >My goal is a single AC + DC + PC suppy & cable for my cellphone, mp3
>player, earbud, camera, and handheld GPS! I won't buy anything that's not >standard USB for charging, operation, and data! Hm. Sounds like the perfect solution would be a powered hub, modified with a switch for each socket that you could use to switch off the data lines & the 5V current limiter. -- W "Some people are alive only because it is illegal to kill them." . | ,. w , \|/ \|/ Perna condita delenda est ---^----^--------------------------------------------------------------- | |||||||||||||
> mentions "Connect the mini-usb connector to the side of the Nuvi."
> But I agree, this is not the place to mention it, as it's hard to find.
> It should be on the main "Technical Specifications" page, but it is not.