NDC comm NWH4020 manual Adapter Properties window - Advanced Information panel

•Transmission Rate — The transmission rate at which data packets are transmitted by the station or the AP. You can set this to Fully Automatic, 1Mb (that is, 1 Mbps), 2Mb, 5.5Mb, or 11Mb. Usually this should be set to Fully Automatic. In an electromagnetically “noisy” environment, a lower rate can provide more stable transmission quality.

•Channel — Ad-hoc networks only. In a multiple-cell network topology, overlapping and/or adjacent cells using different channels can operate simultaneously without interference if the frequency distance between the center frequencies is at least 30 MHz. For example, channels 1, 7, and 13, are non-overlapping channels.

In the case of an infrastructure network, changing the channel number has no affect, as the channel is scanned for automatically. The station will look for an AP with the same SSID, and automatically associate with it.

•Power Saving Mode — Power-saving mode is currently unavailable on the NWH4020. On adapters that do have a power-saving mode, performance is degraded when that mode is enabled.

Advanced Information

Click the Advanced Information tab to view read-only information about the adapter and the driver. This information may be useful in troubleshooting (Figure 16).

Figure 16. Adapter Properties window — Advanced Information panel

InstantWave 11-Mbps USB Wireless LAN Adapter 17