D-Link DIR-456U

42D-Link DIR-456U User Manual
Section 3 - Configuration
The Preamble Type denes the length of the CRC (Cyclic Redundancy Check) block for communication
between the Access Point and roaming wireless adapters. Make sure to select the appropriate preamble type
and click the Apply button.
Note: High network trafc areas should use the shorter preamble type. CRC is a common technique for detecting
data transmission errors.
If all of the wireless devices you want to connect with this access point can connect in the same transmission
mode, you can improve performance slightly by choosing the appropriate “Only” mode. If you have some
devices that use a different transmission mode, choose the appropriate “Mixed” mode.
The “Auto 20/40 MHz” option is usually best. The other options are available for special circumstances.
Using a short guard interval can increase throughput. However, it can also increase error rate in some
installations, due to increased sensitivity to radio-frequency reections. Select the option that works best for
your installation .
Preamble Type:
Wireless Mode:
Band Width:
Short Guard
Interval: