Continental Automotive Systems Inc. GNAD1A Benutzerhandbuch
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Title: User Guide for GNAD1A GSM module
Continental Automotive Systems
Date: 07/14/2008
Page: 5
Figure 3. Assembled test set-up for GMAD1A functional testing
2.4 Quick Start Communication Guide
In order to communicate from a laptop to the GNAD1A (as shown in Figure 3), the
following equipment is needed:
following equipment is needed:
Laptop PC
Interface board
5V DC Power supply (2 Amp)
GNAD1A
Interface board
5V DC Power supply (2 Amp)
GNAD1A
Serial Port Cable
HyperTerminal, Hyper Access or another Communication tool For use with
HyperTerminal baud rate needs to be set to 57.6Kbits, 8 bits, no parity, no stop bits,
and hardware flow control.
HyperTerminal, Hyper Access or another Communication tool For use with
HyperTerminal baud rate needs to be set to 57.6Kbits, 8 bits, no parity, no stop bits,
and hardware flow control.
The following procedure should be followed to communicate with the GNAD1A:
1) Set the power supply to 5.0V and the current limit to 2.0A.
2) Connect the interface board to the power supply
3) Connect the serial port cable to the COM1 of PC and to the RS-232 connection on
2) Connect the interface board to the power supply
3) Connect the serial port cable to the COM1 of PC and to the RS-232 connection on
the Interface board.
4) Turn on the power supply output.
5) Press the NAD_ON_OFF switch for 3 seconds
5) Press the NAD_ON_OFF switch for 3 seconds
.
The module should power on.
6) Use the primary UART to communicate with the NAD using HyperTerminal,
Hyperaccess etc. “READY” message will appear when module powers on.
7) To turn the NAD off, press and hold the NAD_ON_OFF switch again for 2 seconds.
2.5 Quick Start Call Guide
After setting up the interface board and GNAD1A as discussed in 2.4, the following AT
commands can be sent to the NAD using HyperTerminal to make a call:
commands can be sent to the NAD using HyperTerminal to make a call:
1) Type AT to confirm communication should receive OK back.(optional)