User's Manual

Chapter 4 - Operation and Administration
4.2.6.2.7.4 ATPC Parameters in SU
4.2.6.2.7.4.1
t immediately. However, when
nsmit power level will remain at the last
Current Transmit Power determined by the ATPC algorithm before it was
the value configured for the Initial Transmit Power
t reset or following loss of synchronization.
ATPC Option
The ATPC Option enables or disables the Automatic Transmit Power Control
(ATPC) algorithm. The parameter takes effec
changed from Enable to Disable, the tra
disabled. It will change to
parameter only after the nex
The default is Enable.
NOTE
The accuracy of the Transmit Power level is typically +/- 1 dB. However, at levels that are 15 dB or
more below the maximum supported by the hardware, the accuracy is +/- 3 dB. At these levels the
use of ATPC may cause significant fluctuations in the power level of the transmitted signal. When
operating at such low levels, it is recommended to disable the ATPC Option and to set the Transmit
Power parameter to the average Tx Power level before the ATPC was disabled.
4.2.6.2.7.5
n enables turning Off/On the AU’s transmitter. This feature
Tx Control (AU only)
The Tx Control optio
can be used during maintenance or testing to avoid transmissions using
undesired parameters.
The parameter is available only when managing the unit from its Ethernet port.
The default is On.
NOTE
The unit is reset immediately upon configuring the Tx Control parameter to either On or Off (even if
it is set to its current option).
4.2.6.2.8 Antenna Gain
The Antenna Gain parameter enables to define the net gain of a detached
antenna. The configured gain should take into account the attenuation of t
cable connecting the antenna to the unit. The Anten
he
na Gain is important
especially in cases when there is a limit on the EIRP allowed for the unit; the
meters cannot exceed the
read-only parameter in the
applicable “Show” menus.
The
imp
actual value (in the 0 to 50) is configured. The unit can be configured to
maximum allowed value for the Transmit Power para
value of (EIRP - Antenna Gain), where the EIRP is defined in the selected Sub-
Band.
In certain units with an integral antenna the Antenna Gain is not available as a
configurable parameter. However, it is available as a
range is 0–50 (dB). A value of “Don’t Care” means that the actual value is not
ortant. A value of “Not Set Yet” means that the unit will not transmit until the
range
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