[Gta04-owner] rs232 to seagate interface

Dr. H. Nikolaus Schaller hns at goldelico.com
Fri Nov 8 11:29:50 CET 2013

Am 08.11.2013 um 11:26 schrieb Dr. H. Nikolaus Schaller:

> Am 08.11.2013 um 11:21 schrieb Alexey Smirnoff:
>> Is it possible to connect gta04 to a seagate drive via serial?
> Most likely no becasue I don't know the voltage levels and polarity on those Seagate connector pins.
> RS232 defines ca. +/-7 V (yes, negative!). The range that is allowed is AFAIR 3 - 15 V (+/-).
> This may damage your seagate drive if it e.g. works with 3.3V TTL logic levels.

Yes, my guess appears to be right:


But I take no warranty that this description works and is the right one for your intention...

What you also should take care of is that the GTA04 is wired up as a Modem and most likely
the RS232 adapter mentioned here as well. So you need to cross-over RX&TX.

>> http://www.kwikpiks.com/files/18/MSFN%20Seagate%20topic/connector.jpg
>> http://www.kwikpiks.com/files/18/MSFN%20Seagate%20topic/05.jpg
>> http://www.msfn.org/board/topic/128807-the-solution-for-seagate-720011-hdds
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