User manual

Chapter 3 Basic Settings Page 33
Peer-to-Peer (CSMA): The SGT-LD-5-23 connects to another wireless device within the same
network using CSMA protocol. CSMA ensures that only one node is transmitting on the network
at any one time. Under this mode, both PTP and PTMP are available. It is highly
recommended to use this mode when the distance between two nodes is less than 20km.
Peer-to-Peer (TDMA): The SGT-LD-5-23 connects to another wireless device within the same
network using TDMA protocol. TDMA divides each channel into multiple time slots to increase the
amount of data that can be carried; hence increase the throughput. Under this mode, only PTP is
available and is suggested to use this mode when the distance between the two SGT-LD-5-23‟s is
greater than 20km.
Base Station ID (SSID)
For Base Station mode, it requires SSID for CPE clients to associate with. This wireless network
name is shared among all associated devices in your wireless network. Keep it identical on all of
those devices. Note that the SSID is case-sensitive and cannot exceed 32 characters.
Wireless Mode
The SGT-LD-5-23 can only communicate with wireless devices using 802.11a.
Channel/Frequency
Channels varies much as the available band differs from country to country. Select a proper
operating channel in the drop-down list according to your situation.
Transmit Rate
Usually “Best” is preferred. Under this rate, the SGT-LD-5-23 will automatically select the highest
available rate to transmit. In some cases, however, like where there is no great demand for
speed, you can have a relatively-low transmit rate as a compromise for achieving a long distance
link.
Output Power
Specify the signal transmission power. The higher the output power is, the longer distance the
signal can cover, but the power consumption will be then be greater, accordingly. Usually “100%”
is preferred.
Band Width
Four bandwidths are available: 5MHz, 10MHz, 20MHz and 40MHz. Among them, 40MHz can
enhance the data rate more effectively, but will use more bandwidth, thus cause possible