Technical information

Testing a Standalone Unit
70 G24-L Module Hardware Description November 15, 2008
Testing a Standalone Unit
This section describes how to perform a G24-L functionality test, whose purpose is to:
• Introduce the user to the G24-L
• Explain how to work with the G24-L unit
• Describe how to evaluate basic G24-L features
The test setup provides a wide platform through which a G24-L unit can be evaluated. The
specific test procedure described below covers only a few of the G24-L’s many features. Using
this setup, you can perform several additional tests on the G24-L.
The test is performed using two modems, one of which is the G24-L. The modems communicate
with each other through a single computer, which also controls their operation.
The test requires knowledge about the operation of the G24-L Developer’s Kit, terminal
applications and AT commands. Refer to relevant documentation for assistance.
To perform the test, you need the following:
• A G24-L OEM cellular engine unit
• A G24-L Developer's Kit
• A desktop or laptop computer, which includes:
– A free serial communications port (RS232)
– A connected and active line modem (internal or external)
– A terminal application (such as HyperTerminal)
Test Setup
To Setup the G24-L Test
Follow this procedure (Figure 5-1) to set up your equipment before performing the test:
1. Verify that the computer you intend to use for the test is equipped with a working
line modem
You can use a second G24-L unit instead of the line modem. When doing so, you must repeat
the setup procedure that follows for the additional G24-L.
2. Set up the G24-L and the Developer Board as described in “Initial Setup” in
“Chapter 2: Developer Board and Interfaces Description” in the “G24-L Developer’s Kit”
(Motorola part no. 6802984C10)
3. Verify that the G24-L has adequate reception from the local GSM network
4. Connect the Developer Board’s RS232 port to the computer’s serial port
5. Open a terminal application window (such as HyperTerminal) and configure it to operate
with the serial port occupied by the
G24-L