Atlantis Land NetFly Wireless USB Adapter USB 54 - Manual (Page 17)

USER MANUAL
Wireless USB Adapter 17
• Continuous Access Mode (default) – the wireless LAN adapter is
constantly operating with full power. This mode consumes the
most power.
• Maximum Power Save – the wireless LAN adapter consumes the
least power. This mode only operates when there is wireless
network activity.
• Power Save – the wireless LAN adapter consumes moderate level
of power.
Preamble Type: Select Long or Short Preamble type.
Preamble is a sequence of bits transmitted at 1Mbps that allows the PHY
circuitry to reach steady-state demodulation and synchronization of bit
clock and frame start. Two different preambles and headers are defined:
the mandatory supported Long Preamble and header, which interoperate
with the 1 Mbit/s and 2 Mbit/s DSSS specification (as described in IEEE
Std 802.11), and an optional Short Preamble and header (as described in
IEEE Std 802.11b). At the receiver, the Preamble and header are
processed to aid in demodulation and delivery of the PSDU. The Short
Preamble and header may be used to minimize overhead and, thus,
maximize the network data throughput. However, the Short Preamble is
supported only from the IEEE 802.11b (High- Rate) standard and not from
the original IEEE 802.11. That means that stations using Short-Preamble
cannot communicate with stations implementing the original version of the
protocol. Click “Apply” for the changes to take effect.
Support Band: There are two modes the user can select, including 11B
and 11G. The default setting is 11B and 11G are enabled, which is
interoperable with both 11B and 11G devices.
Note: user must select one of 11B or 11G at least; otherwise the wireless
connection will not function.