SIM900A-how to check sim900a modem ?

[N.Karthick]

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?

 

[bikashh]

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.

 

[ud23]

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?