GeoDesy GD-Geo20 - Manual (Page 33)

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 MIMO – multiple input multiple outputs. The device will use two antennas for data transfer (two
Simultaneous streams).
Max data rate
– choose the maximum data rate in Mbps at which should transmit packets. The APC
Will attempts to transmit data at the highest data rate set. If there will be an interference encountered,
The APC will step down to the highest rate that allows data transmission.
Max data rate N
– choose the data rates in Mbps at which should transmit packets for the selected
802.11n mode. The APC will attempts to transmit data at the highest data rate set. If there will be an
Interference encountered, the APC will step down to the highest rate that allows data transmission.
Disable data rate fallback
– when this option is selected, the constant Max data rate will be set
without a step back to the next highest data rate for APC data transmission.
Short GI
– enable short guard interval. If selected, then 400ns value will be used, else 800ns.
MPDU density
– define minimum time between PPDU‟s.
ACK timeout
– specify the ACK timeout using slider or enter the value manually. Ack timeout can be
entered by defining the link distance or specifying time value. Too low value of the ACK timeout will
give very low throughput. A high value may slow down the link in noisy environment. A low value is far
worse than a value slightly too high. ACK Timeout value should be tuned to the optimal value for the
maximum link throughput.
7.2.7 Wireless Mode: iPoll Access Point
The iPoll wireless mode is designed for point to multipoint wireless solutions. The iPoll Access Point
establishes a connection only with iPoll Stations thus creating a reliable network
Basic Settings
Use Basic section to setup basic operating settings of the iPoll Access Point’s radio.
iPoll Access Point and iPoll Station will operate in 802.11n IEEE mode only.
SSID
– specify the SSID of the wireless network device.
Broadcast SSID
– enables or disables the broadcasting of the SSID for AP.
Channel width
– The default channel bandwidth for 802.11n radio is 20MHz. The 802.11n allow
channel bonding in such way the total channel width becomes 40MHz.
Channel
– select the channel from the drop-down list or option Auto for auto channel. Automatic
channel selection allows iPoll Access Point to select a channel which is not used by any other
wireless device or, if there are no free channels available - to select a channel which is least
occupied.
Channel list
– select the channels to create a channel list for auto channel.