The CFIP Lumina Series Full Outdoor Unit Technical Description and Configuration Guide
•
Rev. 1.3
•
© SAF Tehnika JSC 2010
42
MODEM
loopback mode loops signal back to local end after the modem;
IF
loopback mode loops signal back to local end by linking intermediate frequencies.
1.
Loopback
–
allows choosing loopback mode and its activity time in seconds
(command line
–
loopback
)
{status | none | if | modem}} [<time>]
);
2.
Pressing “Execute configuration” applies changes made to the corresponding
section only for the local side CFIP Lumina
. If “Rollback on” is selected,
configuration will be reverted in case of erroneous configuration changes
applied.
3. Writes to configuration file all changes made in the whole page (command
line
–
cfg write
);
4.
FODU returned -
in case of error or incorrectly entered parameter value, or
other problems in the whole page
– the info message will be displayed here.
Otherwise it says “Ok”.
Radio frequency loopback
In order to check performance of CFIP Lumina 24GHz, radio frequency loopback should
be used:
a.
In “Tools
Command line” enter command “radio txpower -10” in order to set
transmit output power to -10 dBm;
b.
In “Tools
Command line” enter command “loopback rf <time_in_second>”,
where” <time_in_seconds> should be substituted by sufficient time of loopback
operation;
c.
Observe Rx level during radio frequency loopback operation (“Status
Main
status”
Rx le
vel” or “System summary”)
d.
Using chart below Tx power shouldn‟t be set (for ATPC) above Maximum Tx
power at appropriate Rx level observed:
For example, if radio frequency loopback indicated Rx level = -55dBm, Tx power
shouldn‟t be set above 0dBm.
