AvaLAN Wireless AW900mSPI-10 - Manual (Page 35)

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AW900mSPI User’s Manual
• Network Name: a 32-bit (entered as 4 hex digits) network key that must be
the same for all communicating radios.
• AES Private Key: a 128-bit (entered as 32 hex digits) value that is the private
encryption key used to secure the traffic sent between radios. All communi-
cating radios must have the same assigned key.
• Serial Port Settings: the familiar parameters associated with any UART con-
nection, baud rate, data bits, parity and stop bits.
• Bit Delay and Record Length: These are performance tuning parameters that
help to optimize the match between incoming data and packet transmission
in UART mode. For a complete discussion, go to avalanwireless.com/faqs.com
and look for AW900mSPI Performance Tuning.
9. When you are satisified with the Boot Config parameters, you may save them
to a file of your choice on your PC by clicking the "Save" button. Then, click
"Send" to send the boot file to the XC1220 on the module. You should see a mes-
sage indicating successful upload in the status bar at the bottom of the utility's
window. The "Send" button will also cause the module to reboot. The status bar
will then show "Target Rebooted." You can verify that the boot configuration
parameters were successfully loaded by clicking the "Get" button and seeing no
change from what was sent. The "Reboot Target" button can be used to reboot
without uploading the configuration.
10. At this point, you will want to activate the second Evaluation Board by repeat-
ing steps 1 through 9 with it. If both Evaluation Boards are connected to the
same PC, the COM port numbers assigned will be different. The higher num-
bered COM port in each pair is always the Boot Config Serial Port and the lower
numbered port is used for data that is transmitted and received via RF.
11. Make sure that you can update the Boot Configuration parameters for both
Evaluation Boards and that the configurations are compatible (one AP, one SU,
matching channels, keys and serial port settings.
12. When both radios are configured properly, their LEDs will indicate that they
are successfully communicating: Their channel LEDs will show the same binary
channel number and the quality LEDs will indicate RF signal strength. If a radio
is continuously scanning through the RF channels and just one red quality light
is lit, the units have not successfully negotiated an RF connection and a mis-
matched configuration is likely to be the cause.
13. By clicking the "Stats & Spectrum" tab at the top of the utility's window, you
will see a window that allows you to examine the AW900mSPI's reported status
information and to perform a spectrum scan of the 900 MHz frequency band to
look for interference sources: