User's Manual

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BreezeACCESS Version 4.3 Operations and Administration
Manual Revision: 3.0
received at an optimal level, or as high as possible if the optimal range
cannot be reached because of specific link conditions.
Each time that the SU tries to associate with the AU (following either a
reset or loss of synchronization), it will initiate transmissions using the
Current Transmit Power Control, which is the last value that was
previously used by the ATPC mechanism. If after a certain configurable
time the SU did not succeed to synchronize with the AU, it will start
transmitting using the level configured for the Transmit Power Control
parameter. (If this is the first time that the SU is powered up, or if the
ATPC algorithm was not used, the Current Transmit Power Control
equals the value of Transmit Power Control).
 Transmit Power Control (IF-based units only – SU-A/E, AU-BS
and AU-NI) – Controls the relative gain of the Tx power circuits.
A value of 15 represents the highest transmit power level, which is
the maximum level supported by the specific unit. A lower value
represents a lower transmit power level. The effect of this parameter
on the transmitted power is not linear, since it is affected by the
length (attenuation) of the IF cable.
In SUs, if the ATPC Option is enabled this parameter serves for
setting the initial value to be used by the ATPC algorithm after the
first time of powering-up the unit. It will also be used in the
following cases:
a. If the unit does not succeed to associate with the AU after reset
b. If the unit does not succeed to re-synchronize with the AU after
losing synchronization
c. If the SU is associated with the AU but there are too many
successive dropped frames, indicating that it transmits at a
level that may be too low.
The actual run-time value that is used to control the transmit power
level is determined by the ATPC process.
The allowed range is from 0 to 15.
The default value is 15 (maximum power)
The following tables displays the transmitted power output as a
function of the value of the Transmit Power Control parameter and
the attenuation of the IF cable.