Interfacing TC35i Problem

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Sharagim

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Hi,
I am trying to interface a tc35i gsm module .
As datasheet I connected:
1-5 -> BAT+
6-10 -> GND
18(RXD0) -> max232 (12-R1Out)
19(TXD0) -> max232 (11-T1IN)
and IGT to a circuit which trying to turn on the tc35i.

But I cant get anything hyper terminal.
When I set baud rate on hyper terminal to 115200 I and when I type I see something which is not correct for example when I type A I see H as echo.
I would appreciate if you can help me.
 

Hi again,
first problem was about current and now solved.
I have another issue which is :
When there is no SIM card I can send AT command and ... but when I input SIM card I see LED blink 4-5 times and turn off , during this blinking I can send AT commands (which is about 3-4 Seconds) then stopped.
I would appreciate if you can help me.
 

Hello,

can you help me i am wiring up the tc35i to start i have connected the 5 BAT+ & 5 GND.

What do i do about the IGT?

there is no switch i dont require one, and i am not connected it to any other equipment, i just want to dial it and it turns automatically.

please help.

Ally
 

Depending on how the device was set up - maybe its trying to register on the network - in which case it will draw large current spikes - check current again.
 

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