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Problem using hyperterminal with sim 900 evb

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hasmibaih

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Hello everyone
I had a problem with sim 900 evb, when i send AT command with windows 7 hyperterminal and enter
there is no reponse like "ok"
what should i do
is my sim 900 evb module faulty ?
coz when i turn pwrkey on it, there isn't a respon on the display
thanks
 

xpress_embedo

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No Hyperterminal is present in Windows 7, so i am doubting your technique to use software.

HW Hercules, and in serial tab, open the Desired COM Port.

Apart from that, try using module with different baud rates.
Maybe it is configured for some other baud rate
 

hasmibaih

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not only hyperterminal, i use realterm too, but i just get a reply symbol ΔΔΔΔ with 9600 baud rate and get a nothing on different baud rate . After that it stops responding. Any suggestion to solve this issue?
 

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