4.1.2
ATPC Configuration
To configure ATPC, it is necessary to set Rx (remote) “min” and “max” values and enable the
ATPC feature.
ATPC update period and ATPC delta are recommended to be left unchanged.
It is also possible to change the limit of Tx power correction.
Figure 4.2
ATPC configuration
1.
ATPC function
– allows enabling or disabling ATPC (Automatic Transmit Power
Control). By default this feature is disabled (command line –
atpc
[enable|disable]
);
2.
ATPC update period (1..5) –
allows defining the period in seconds in which ATPC
parameters are being updated. By default the update period is 1 second (command
line –
atpc delay
<power change delay time 1..5 sec>
);
3.
Tx power correction
– displays the amount of transmitter power in decibels ATPC
has currently corrected (command line –
atpc status
);
4.
Tx power correction limit
– allows defining the amount of dB ATPC will be able to
correct regarding initial Tx power value (command line –
atpc limit
<tx power
correction limit>
);
5.
Remote device status
– shows if management CPU was able to read data from
remote management CPU;
6.
Rx (remote) level (-90..-20 dBm) –
allows defining the maximum and minimum Rx
level. ATPC Tx power correction will be performed only in case of exceeding these
defined thresholds Rx level (command line –
atpc rxminmax
<rxmin> <rxmax>
);
7.
Rx (remote) level –
shows current Rx level of remote end (command line –
atpc status
);
8.
By pressing
„Execute configuration”
changes made to the corresponding section
apply only for the local side CFIP PhoeniX. If “
Rollback on
” is selected, configuration
will be reverted in case erroneous configuration changes are applied.
9.
Pressing “
Execute for both
” applies changes made to the corresponding section
both for local and remote side CFIP PhoeniX.
10.
Pressing “
Write to config file
” saves all the changes made on the whole page
(command line –
cfg write
);
11.
Pressing “
Write to config file for both
” saves all the changes made on the whole
page for both ends of the link simultaneously (command line –
cfg write
);
12.
System returned -
in case of error or incorrectly entered parameter value, or other
problems on the whole page – the info message is being shown here. Otherwise it
says “Ok”.
(!)
Note, that ATPC is mechanism for reducing Tx power, that’s why to make proper use of ATPC, transmitter
power (Tx power) must be set to the maximum value.
CFIP PhoeniX Series TDM/IP Split Mount System Technical Description and Configuration Guide
•
Rev. 1.13
•
© SAF Tehnika JSC 2015
41
