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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > Sim300 POWER DOWN
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planet69
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« on: August 29, 2008, 08:24:56 08:24 »
encountered a strange situation with sim300 module.
After making a call and issuing an 'ATH' command, the module goes to POWER DOWN mode. It does not happen if i issue a second 'ATH' shortly after the first 'ATH' command.
What are the possible causes sim300 powers down automatically without sending AT+CPOWD=1 command?
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micropar
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« Reply #1 on: August 30, 2008, 03:48:44 03:48 »
Hi planet69,

Can you share sim300 GSM modem circuits? I have these modules without any app notes or guides.

Thanks in advance with regards,
--micropar--
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planet69
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« Reply #2 on: September 02, 2008, 02:16:30 02:16 »
you can request those documents from your supplier.
i'm sure they have what you need
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falcon _bd
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« Reply #3 on: September 03, 2008, 12:53:39 12:53 »
check the data sheet for sim300

http://www.synes.co.th/product/gsm-gprs-modules/datasheet_SIM300.pdf
OR
http://www.chinaicmart.com/series-SIM/SIM300.html
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