Hi. I finally returned the board and got a new one. This new TS-7553 works
just fine, so I can confirm that the problem observed was hardware based.
Thanks for the help.
--- In "Charles" <> wrote:
>
>
> Hi --
>
> --- In "jnavarro.groups21" <jnavarro.groups21@>
> wrote:
> >
> >
> > Well, i'm neither and expert, nor have a good equipment, but with my
> > cheap multimeter I have measured the voltage in three point of the board
> > labeled "5V" "3.3V" and "1.8V", and also at the USB port (5V), and the
> > levels are correct and without variations during the copy operation.
>
> If there is a problem, it would be a fast, momentary drop that you would not
> likely see on a meter. You need an oscilloscope to see it, or a fast
> responding strip chart, if it is there. (Guess I'm dating myself there ...)
>
> >
> > Of course, I could not tell if there is any power drain on other part of
> > the circuits...
> >
> > By the way, this problem is reproduced when powering the board through
> > the USB Host port and when using an external power. No POE used.
>
> What are the specs of your power supply? TS makes it pretty clear that more
> power will be needed in some cases. If it is more than what they normally
> *ship* with kits, then try a bigger PS. From the TS 7553 page:
>
> "The TS-7553 requires about 3.2 watts of power (642mA @ 4.98V) for normal
> operation and will require more if connecting USB devices, a larger MicroSD
> card, XBee radio, or WiFi option. For this reason, it is recommended to power
> the device at 5-12V input via barrel connector or 2 pin terminal connector."
>
> I'd try a 12V PS as suggested by TS, and see if that helps. Maybe the
> on-board 5V regulator is dropping too much when the current draw goes up,
> when using the normal TS-supplied 5V PS. (IE, not enough headroom).
>
> regards, ......... Charlie
>
> >
> > There is another way to measure the board power?
> >
> > Thanks in advance
> >
>
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