User guide

138 Chapter 10: Device Detection
AirMagnet Spectrum XT User Guide
Logitech’s proprietary wireless protocol is used together with a high-performance RF
transceiver. This is a highly integrated, single-chip transceiver that operated in the 2.4 GHz
ISM band and is really suited for the most demanding applications. In addition to the
technical features described above, this technology also provides the lowest-power RF
solution on the market today, translating into significantly longer battery life.
Below is a sample of what the spectrum pattern for a Non-Bluetooth Wireless Mouse would
look like in a relatively noiseless 2.4GHz spectrum.
Impact on 802.11 WLAN
Since this technology is designed to minimize its interference with WLANs, the impact of
having a few of these devices inthe spectrum should be low. If there are no frequencies that
have low levels of WLAN traffic, the device will choose the least use frequency, which may
cause minor disruptions to the WLAN.
Recommended Course of Action
• Ensure that the WLAN network is operating on non-overlapping channels like 1,6,
and 11. This will maximize the number of frequencies with little to no WLAN traffic
on them.
• If multiple devices of this type exist in the spectrum, begin removing devices until the
interference clears up.
• If you have to use your non-Bluetooth wireless mouse along with 802.11b/g WLANs,
try to maximize the distance between APs and wirless mice to minimize their RF
interference between each other.
• Consider upgrading your WLAN to 802.11n standard, which not only provides better
RF inteference avoidance mechanisms but also offers greater throughput.
Table 10-1:
Feature
Logitech advanced 2.4 GHz
wireless technology
Bluetooth
Range 10m 10-100 m
Bandwidth 2 Mbps bursts 1-3 Mbps bursts
Latency at
reconnection
<90 ms .5-2 seconds
Interference resistance Best Best
Battery life Best Good
Report rate 125 rpt/s or faster 80 rpt/s
USB interface FS FS