WellGate 3512 Technical Manual EN-V1.00
Copyright © 2007 Welltech Computer Co., Ltd. All right reserved.
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divided from 802.11 frames. If there are excessive collisions over WLAN, user can try different
fragment size to increase reliability.
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RTS Threshold (0-2347): RTS Threshold is a mechanism implemented to prevent the
problem of “Hidden Node”. “Hidden Node” is a situation in which two stations are within range
of the same Access Point, but are not within range of each other. Therefore, they are hidden
nodes for each other. When station starts data transmission with the Access Point, it might not
notice that the other station is already using the wireless medium. When these two stations
send data at the same time, they might collide when arriving simultaneously at the Access
Point. The collision will most certainly result in a loss of messages for both stations. Thus, the
RTS Threshold mechanism provides a solution to prevent data collisions. If the “Hidden
Node” problem is an issue, please specify the packet size. The RTS mechanism will be
activated if the data size exceeds the value you set. Default value is 2347.
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Beacon Interval: set beacon interval time in milliseconds. System broadcast packet or a
beacon to synchronize the wireless network.
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Data Rate: specify the transmission rate. Leave on “Auto” to maximize performance versus
distance.
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Preamble Type: A preamble is a signal used in wireless environment to synchronize the
transmitting timing including Synchronization and Start frame delimiter. In a “noisy” network
environment, the Preamble Type should be set to Long Preamble. The Short Preamble is
intended for applications where minimum overhead and maximum performance is desired.
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Broadcast SSID: enable or disable SSID broadcast function. If user enables this function,
other wireless clients can broadcast and find this wireless AP to connect.
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IAPP: IAPP is a portable implementation of the 802.11F specification for Inter Access Point
Protocol (IAPP) to enable end-station mobility across Access Points.
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RF Output Power: set radio output power level as 100%, 50%, 25%, 10% or 5%.