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Locating EXLINK
Posted: Tue Sep 13, 2016 8:37 am
by Mikaop
Hi, I have a board like this, the only difference is that "1" is unmounted, so I have two 3 pin triangles like in "2", I'm thinking that "1" is the
EXLINK and because "1" is unmounted I need to solder RS232 -> USBCOM to it, Does anyone know what is the structure of "1" so I will know where to solder TX/RX/GND? or what is the model name of this part? Can I solder TX AND RX to "3" AND GND to any metal surface?
Thanks.
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Re: Locating EXLINK
Posted: Tue Sep 13, 2016 8:53 am
by bugficks
im no electronics guy... but there are other 3.5mm jacks on board where you could figure out layout
Re: Locating EXLINK
Posted: Tue Sep 13, 2016 8:55 am
by Mikaop
You mean to desolder them and check? I prefer in a cleaner way...
Re: Locating EXLINK
Posted: Tue Sep 13, 2016 9:17 am
by bugficks
no, use 3.5mm plug and volt meter to check on existing jack to figure out what goes where
Re: Locating EXLINK
Posted: Tue Sep 13, 2016 11:02 am
by Mikaop
bugficks wrote:no, use 3.5mm plug and volt meter to check on existing jack to figure out what goes where
I don't think its the correct approach because the conductors of each pin on the other 3.5mm plugs are different on each plug... And I get 0V on all the pins of the suspected
EXLINK...
Re: Locating EXLINK
Posted: Tue Sep 13, 2016 11:46 am
by juusso
If you`re familar with osciloscope and you have it (at home/work/friends/anywhere available for your service), you could check signal shapes if any on those pins...
Re: Locating EXLINK
Posted: Tue Sep 13, 2016 1:46 pm
by Mikaop
juusso wrote:If you`re familar with osciloscope and you have it (at home/work/friends/anywhere available for your service), you could check signal shapes if any on those pins...
I don't have Oscilloscope in reach..
Is it ok to search for TX (only) by trying all possible pins?