Alcatel-Lucent 9500 MXC User Manual page 414

Chapter 7. Node and Terminal Plug-ins
Function
Max Tx Power
Min Tx Power
Detected Tx Power
Vol. IV-7-24
Description
This can be set up to the maximum for the capacity and bandwidth option
selected. Mouse-over for maximum and minimum values. Note that a link
licence from the local radio regulation authority may limit the maximum
allowable power to a setting below the maximum capability of the radio for
short to medium distance hops, in which case set the Max Tx Power to the
licensed maximum.
Mouse-over to view the minimum power setting for the capacity and
bandwidth option selected. The minimum power must be set such that under
normal operating conditions a satisfactory fade margin is preserved.
This is the detected/measured Tx power. With ATPC enabled it provides an
indication of the actual Tx power, which under normal conditions should be
inside the maximum and minimum Tx power settings (not hard up against the
max and min). When ATPC is disabled, the Detected Tx Power indication
should be within 1.5 dB of the Tx Power figure.
To ensure correct ATPC operation:
1. Set Max Tx Power to the maximum for the capacity and bandwidth option of
the link. Set Min Tx Power to the minimum.
2. Set the Remote Fade Margin to the figure indicated in the path planning data
sheet for the link.
3. To confirm the Max/Min Tx Power and Target Remote Fade Margin, click
.
Send
4. Read the resulting Remote Fade Margin and verify it is within 3 dB of the
planned fade margin for the link.
5. Read the Detected Tx Power for the link and verify it is within 3 dB of the
planned Tx power for the link.
6. Reset the Max Tx Power, if required to a lower level. This can be the level
specified by the local radio regulation authority. It must be set for a power
level not less than 7 dB above the Detected Tx Power, to provide headway for
ATPC action in the event of a path fade.
7. Reset the Min Tx Power to the normal (prevailing) Detected Tx Power, or to
a level not more than 3 dB to 6 dB below the Detected Tx Power. This setting
will safe-limit the minimum in the event the fade conditions lead to rapid and
large Tx power movement.
8. To commit the configuration, click .
Send
Alcatel-Lucent