Specifications
Configuration MP.11 5054 (MP.11a) Installation and Management
Interface Parameters
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• Transmit Power Control (TPC): By default, the unit lets you transmit at the maximum output power for the country/
band or regulatory domain and frequency selected. However, with Transmit Power Control (TPC), you can adjust the
output power of the unit to a lower level in order to reduce interference to neighboring devices or to use a higher gain
antenna without violating the maximum radiated output power allowed for your country/band. Also, some countries/
bands that require DFS also require the transmit power to be set to a 6 dB lower value than the maximum allowed
EIRP when link quality permits. You can see your unit’s current output power for the selected frequency in the event
log.
The event log shows the selected power for all data rates, so you must look up the proper data rate to determine the
actual power level.
NOTE: This feature only lets you decrease your output power; it does not let you increase your output power beyond
the maximum allowed defaults for your frequency and country.
Select one of the following options and click OK at the bottom of the window. Your original output power is adjusted
relative to the value selected. The new setting takes effect immediately without rebooting:
NOTE: 24 Mbps and lower modulation have maximum +16 dBm TX power, 36 Mbps has maximum +13 dBm TX
power, 48 Mbps has maximum +12 dBm TX power, and 54 Mbps has maximum +11 dBm TX power. Because
higher modulation has a lower maximum TX power, the total TPC range is smaller at a higher data rate.
Because the minimum TX power is equal for all data rates, each TPC selection has constant TX power for all
data rates except where the maximum TX power is limited.
• Actual Transmit Power Control: This field displays the actual transmit power when ATPC is enabled.
• Enable Turbo Mode (Non-DFS US Only): Check this box to enable Turbo Mode. Turbo Mode is supported only in
the United States when DFS is not required. Enabling turbo mode, in its current implementation, allows the unit to
use two adjacent frequency channels to transmit and receive a signal. By enabling turbo mode, the receive sensitivity
improves by 4 dB for the 36 Mbps data rate and by 2 dB for the 24 Mbps data rate.
NOTE: The additional sensitivity is provided with the impact of using twice as much spectrum and thus increasing the
opportunity of interference and decreased ability for system collocation. Generally, Turbo mode is not
recommended except when the extra sensitivity is absolutely required.
• 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/band.
For countries/bands in which DFS is required, Frequency Channel is not configurable. Instead the channel is auto-
selected by the DFS process.
• Scanning Across Bandwidth: As the 5054 (MP.11a) supports only 20 MHz operation, this parameter has no effect.
• 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 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:
TPC Selection (dB) Maximum TX Power (dBm)
0 (default) 16
-3 13
-6 10
-9 7
-12 4
-15 1
-18 (minimum TPC level) 0