II-EVB-361-
MW User’s Manual
15
iChip Wireless LAN Test Mode
WLTR
This command limits the wireless LAN transmission rate according to the specified
command parameter. The table below details the possible parameter values:
Maximum
Transmission Rate
Detail
0
Maximum possible transmission rate for the current chipset.
1
1 Mbps
2
2 Mbps
3
5.5 Mbps
4
11 Mbps
Table 3: Maximum Transmission Rate Command Parameter
When AT+i WLTR is issued, transmission rate is limited for the duration of the
session until another AT+iWLTR command is issued, or iChip is power-cycled.
Placement and Range Guidelines
802.11b/g wireless LAN devices connect to wireless LAN Access Points over a
maximum range of 300 feet. Actual transmission rate and service quality may vary
significantly as a result of environmental obstacles and physical placement of the
Access Point and station devices.
For best results, refer to the following guidelines:
1.
Locate the wireless LAN equipment away from sources of interference, such
as PCs, large metal surfaces, microwaves, and cordless phones
.
2.
Position the wireless LAN access point at an elevated position and as close as
possible to the center of the area in which the wireless LAN devices will
operate.
Wireless LAN Data Privacy/Security Considerations
The fact that wireless LAN devices transmit data over a radio link makes them
vulnerable to electronic eavesdropping, tampering, and information theft. There are
several means by which you may strengthen your wireless LAN access security:
Change the factory default SSID setting of the wireless LAN Access Point and
station devices. Enable WEP or WPA encryption of the wireless LAN data
communications. If you use WEP, it is recommended that you use 128-bit
WEP keys.
Restrict 802.11b/g wireless LAN access based on MAC address. This is
configurable in most Access Point devices.
Place the 802.11b/g Wireless Access Point in a location where it cannot be
physically tampered with.
Store printed SSID and WEP or WPA key settings in a safe place.
