9
6. Turn on the WINC 900A modem. The WINC 900A performs a brief self-test via resident
communications software. After the initialization of the communication software on the PC,
the front panel LEDs
2
indicate the state of the WINC 900A. If cabling is properly done,
the DTR, DSR, CTS and RTS indicators should be green, whereas the RI, DCD, RxD,
and TxD indicators are red after the WINC 900A is initially powered up .
After the completion of the hardware connection between your PC and the WINC 900A , you must
follow the same steps above working on the 2nd unit.
4.2 Communication Software Settings
Although the WINC 900A is a sophisticated wireless modem and integrated spread spectrum
transceiver, it has been designed to be compatible with off-the-shelf communications software
typically used with conventional land-line modems. Consequently, if you have not already done so,
install the appropriate data communications software into your computer before proceeding further.
Please note, due to the popularity of MS-Windows, the Terminal in the Accessories of MS Window
3.1 will be used in the following process as guidance. But, the maximum baud rate of MS
Terminal is 19.200Kbps only; therefore, it requires other communication software to reach
38.400Kbps.
Step 1: Activate your communication software
1. Running MS-Windows, and then activate the Terminal in Accessories.
2. Click the “Settings” ,and then activate the “Communications” dialog box.
Step 2: Configure your communication software to meet default value of WINC 900A
1. Click on the available serial port from the “Connector” list,
2. Click on the 9600 from the “Baud Rate” list,
3. Click on “OK” return to the Terminal.
All selectable items in the communication dialog box will turn into active (high-lighted), if
the selected serial port is available on your computer. Otherwise, stop here and consult
with a computer expert knowledgeable about setting up serial port for you.
Step 3: Communicate with WINC 900A via AT command
1. Press the “Enter” key.
You should get an “ERROR” whenever you press the Enter key without AT commands.
2. Try type in “ATI0”
You should get response similar to the followings:
MODEM address: xxxxxxxx
Current channel: 0
(The MODEM address should match the right-most seven (7) digits of the serial number
digit found on the label affixed to the left side of the unit.)
After the configuration setup process above, the communications software will go into the
local-terminal or direct-connection mode. All AT commands for WINC 900A will be sent
to the serial port directly, accepted and executed by WINC 900A.
2
See Section 7.0, WINC 900A Interface Status, for LED indicator definitions.
