Tsunami MP.11 Installation and Management Model 5012-SUR ...

Configuration Tsunami MP.11 5012-SUR Installation and Management
Interface Parameters
• Frequency Channel: The frequency channel indicates the band center frequency the unit uses for communicating
with peers. This frequency channel can be set in several ranges, depending upon regulatory domain. Refer to Country
Codes and Channels for channelization information. For countries in which DFS is not required, the Frequency
Channel list displays only the channels and frequencies allowed for the selected country.
For countries in which DFS is required, Frequency Channel is not configurable. Instead the channel is auto-selected
by the DFS process.
If All Channels 5 GHz is selected in the Country drop-down menu on the Configure > System page, any channel in
the 5 GHz range is manually selectable.
• DFS Backup Channel Status: This field appears only if a US-DFS Country is selected from the Configure >System
page. The device operates in channel 149 when all channels are blacklisted.
• Scanning Across Bandwidth: Enable this field if you want the SU to scan across the whole range of channel
bandwidths (5, 10, or 20 MHz, as available) with or without roaming enabled. Disable this field if you wish the SU to
scan only across its configured channel bandwidth when roaming enabled.
• Multicast Rate: The rate at which data is to be transferred. All RF traffic between 5012-SUR units is multicast. This
drop down box is unavailable when DDRS is enabled.
The default data rate for the 5012-SUR is 36 Mbps. The SU must never be set to a lower data rate than the BSU,
because timeouts will occur at the BSU and communication will fail.
Selections for multicast rate are shown in the following table:
5 MHz 10 MHz 20 MHz 40 MHz (TurboMode)
(US Non-DFS and All Channel -
5GHz(A5) Only; 5054-R only)
1.5 3 6 12
2.25 4.5 9 18
3 6 12 24
4.5 9 18 36
6 12 24 48
9 18 36 72
12 24 48 96
13.5 27 54 108
• Channel Bandwidth: This field is used to change the bandwidth. Values are 5 MHz, 10 MHz, or 20 MHz, as well as
40 MHz when Turbo mode is enabled.
NOTE: The 5 MHz channel bandwidth is not available when the selected country is UNITED STATES DFS.
• Satellite Density: The Satellite Density setting is a valuable feature for achieving maximum bandwidth in a wireless
network. It influences the receive sensitivity of the radio interface and improves operation in environments with a high
noise level. Reducing the sensitivity of the unit enables unwanted “noise” to be filtered out (it disappears under the
threshold).
You can configure the Satellite Density to be Large, Medium, Small, Mini, or Micro. The default value for this
setting is Large. The smaller settings are appropriate for high noise environments; a setting of Large would be for a
low noise environment.
A long distance link may have difficulty maintaining a connection with a small density setting because the wanted
signal can disappear under the threshold. Consider both noise level and distance between the peers in a link when
configuring this setting. The threshold should be chosen higher than the noise level, but sufficiently below the signal
level. A safe value is 10 dB below the present signal strength.
If the Signal-to-Noise Ratio (SNR) is not sufficient, you may need to set a lower data rate or use antennas with higher
gain to increase the margin between wanted and unwanted signals. In a point-to-multipoint configuration, the BSU
should have a density setting suitable for all of its registered SUs, especially the ones with the lowest signal levels
(longest links).
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