SIM900A-how to check sim900a modem ?

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N.Karthick

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1.how to test a GSM module.

2.before connecting hyper terminal.

3. because send and receive problem in hyperterminal ? on loop connection it works properly but in modem?
 

Your question is not clear about what you want to achieve.

I would recommend power up your module as described in the user manual and later try to communicate via UART from PC terminal. You can use teraterm for that.
 

1.how to test a GSM module.

2.before connecting hyper terminal.

3. because send and receive problem in hyperterminal ? on loop connection it works properly but in modem?

1(Ans) You can test your GSM with hyper terminal or with stand alone controller with AT commands.

2and 3(Ans) I think its easy to test the GSM module with hyper terminal with just only serial cable.What kind of send receive problem you having?
 

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