Risco WiComm-1, Руководство пользователя

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Chapter 8. Appendix
the PC cannot access serial devices.
y
If a problem occurs while using the COM port redirector (emulator) function, check if the correct virtual port is
used while an application program is running. Check if the virtual port is specified correctly in the COM port
setting of the application program.
8.2.4 Troubleshooting for Setting Wireless Networks
y
Check if a wireless adapter (for wireless communication of a PC) or wireless AP of the PC is set correctly.
Check if the setting for wireless mode, SSID, WEP or other security, or IP address is correct.
y
Check if the sensitivity of wireless signals is sufficient or the WiComm-1 is out of wireless communication
range (about 90 m).
y
After generating wireless signals through Bluetooth device, wireless phone or electronic microwave, check if
the WiComm-1 is closed to a device with the risk of interference.
y
Check if wireless communication mode, such as Infrastructure mode requiring the connection of an AP and Ad-
Hoc mode that AP is not necessary, is set correctly.
y
If the wireless network is protected by using WEP encryption algorithm or password security, many wireless
adapters or APs may use passwords or Passphases. At this time, 10-digit key (40-bit or 64-bit WEP) or 26-digit
key (128-bit WEP) should follow the prefix, “0x” in hexadecimal format.
y
If the communication is slowed or disconnected from time to time, change the wireless network channel. The
channel can be changed via Web interface or Telnet. For addition information, refer to the documents
concerned with wireless adapter or AP. When changing the channel, it is recommended to select a channel that
is 3-channel higher or lower than other wireless channels in use on the current wireless network.
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