Q&A

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No. 1261	Re: Re: Re: [140117-0008FE] Re: CSW-M85 disfunction	2014-01-20

Without any load : 5.5 v With 9 v as power source : CSW-M85 connection is good. After that, it's good again with 5.5 v ! Thanks to you > Sollae Systems wrote: > ------------------------------------ > Dear Sir, > > In my opinion, the power source was a reason of the problem. > > Lack of current seems cause the voltage drop. > > Could you check the voltage without any loads? > > Thanks, in advance. > > > Rambouillet wrote: > > ------------------------------------ > > I don't use your eveluation board. > > My prototype is power supplied by a USB connector with a LD33V regulator. > > The voltage seems to be a little too low (between 3.15-3.2 v). > > > > > Sollae Systems wrote: > > > ------------------------------------ > > > Hi. > > > > > > Assuming the module H/W is fine, the problem seems to be related with Power Supplying. > > > > > > Did you use our evaluation board or your own board? > > > > > > Thanks, in advance. > > > > > > > Rambouillet wrote: > > > > ------------------------------------ > > > > After some weeks of good work (TCP or UDP mode), the CSW-M85 hangs up. > > > > The on board led is blinking : 2 s on, off, 2 s on ... > > > > CONFIG#, SYS_RST#, POWER OFF/ON has no effect. > > > > Some weeks later : surprise ! CSW-M85 works well. > > > > Few days after : same problem. > > > > And so on.