User's Manual

Tsunami MP.11 2454-R, 5054-R, and 5054-R-LR Installation and Management
Chapter 5. Using the Web Interface 60
Enable Turbo Mode
Check this box to enable Turbo Mode. Turbo Mode is supported only in the United States, and only for the
5054-R. Turbo Mode uses three adjacent channels for wireless data transfer.
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 “Appendix A.
Country Codes/Channels”
on page 131 for channelization information.
For countries in which DFS is not enabled, the Frequency Channel list displays only the channels and
frequencies allowed for the selected country.
Multicast Rate
The rate at which data is to be transferred. This drop down box is unavailable when DDRS is enabled.
The default multicast rate for the unit is 36 Mbps. The SU must never be set to a lower rate than the BSU
because timeouts will occur at the Base Station and communication will fail.
Selections for multicast rate for 5, 10 and 20 MHz channel bandwidths are shown in the following table in
Mbps:
5 MHz 10 MHz 20 MHz
1.5 3 6
2.25 4,5 9
3 6 12
4.5 9 18
6 12 24
9 18 36
12 24 48
13.5 27 54
Channel Bandwidth
This field is used to change bandwidth; values are 5MHz, 10 MHz, or 20 MHz, as well as 40 MHz when Turbo
mode is enabled (5054-R only). To change a BSU’s channel bandwidth (for example from 20 MHz to 5 MHz),
change the channel bandwidth of any SU connected to the BSU before changing the BSU’s channel
bandwidth.
Antenna Gain (BSU only)
You can modify the sensitivity of the radio card when detecting radar signals in accordance with ETSI and
FCC Dynamic Frequency Selection (DFS) requirements. Given the radar detection threshold is fixed by ETSI
and the FCC, and that a variety of antennas with different gains may be attached to the unit, you must adjust
this threshold to account for higher than expected antenna gains and avoid false radar detection events. This
can result in the units constantly changing frequency channels.
You can configure the threshold for radar detection at the radio card to compensate for increased external
antenna gains.
The Antenna Gain value ranges from 0 to 35. The default value is 0.
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).