HP ProCurve 420 Management And Configuration Manual page 114

Access Point Configuration
Modifying Radio Settings
5-56
Preamble: Sets the length of the signal preamble that is used at the start
■
of a data transmission. Using a short preamble (96 microseconds) instead
of a long preamble (192 microseconds) can increase data throughput on
the access point, but requires that all clients can support a short preamble.
• Long: Sets the preamble to long. Using a long preamble ensures the
access point can support all 802.11b and 802.11g clients.
• Short or Long: Sets the preamble according to the capability of
clients that are currently asscociated. Uses a short preamble if all
associated clients can support it, otherwise a long preamble is used.
To Change the Working Mode:
Select the Configuration tab.
1.
2. Click the [
Port/Radio Settings]
Select the working mode you want to use, b & g mixed mode, g only mode,
3.
or b only mode.
4. Click the
[Radio Mode Change]
To Modify Radio Settings:
1. Select the Configuration tab.
2. Click the [ Port/Radio Settings]
3. To enable the radio, check the Enable check box next to Radio.
4. Select Enable for Auto Channel Select, or select a specific number for the
Radio Channel. If you are deploying access points in the same area, be sure
to select channel numbers that are at least five apart (for example,
channels 1, 6, 11).
5. Modify other radio parameters, if appropriate.
6. Click the
[Apply Changes]
button.
button.
button.
button.