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The SAF FreeMile Series Full Outdoor Unit Technical Description and Configuration Guide • Rev. 1.3
© SAF Tehnika JSC 2012
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
Rx quality bar with use of colors (red, orange, yellow, green) indicates
current quality of the signal

Modulation indicates which modulation mode is used. The same
modulation must be set at both ends.
5.
The tree of Web GUI sections;
6. Radio side – shows the radio side of local and remote FreeMile;
7.
Tx power – shows current transmitter power in dBm;
8. Rx level – shows current level of received signal. It must not differ significantly from
the previously calculated value;
9.
Tx frequency – shows the transmitting frequency;
10. Rx frequency – shows the receiving frequency;
11.
Bandwidth – shows width of currently utilized bandwidth in MHz;
12. Modulation – shows modulation mode set;
13.
Ethernet capacity – shows Ethernet capacity set;
14. E1 channels – shows the number of E1 channels set. The number must be equal at
both ends;
15.
Modem status – indicates the acquire status of the modem.
‘ACQUIRE_IN_PROGRESS’ will appear during start ‐ up, when modem acquires
required parameters, but in normal operation mode ‘ACQUIRE_LOCKED’ will be
seen. Any other options designate failure;
16.
LDPC decoder stress – shows the load of LDPC (low ‐ density parity ‐ check code)
decoder. The LDPC is monitored for the number of errors being corrected on the
input of LDPC decoder (see Figure 3.1 ).
Figure 3.1 LDPC decoder operation
As long as LDPC stress value is under the specified thresholds, the amount of errors
(and BER itself) on the output of LDPC remains at zero level.
17. Current modulation Rx / Tx – shows the modulation modes currently utilized;
18.
Current Ethernet capacity Rx / Tx – shows the current Ethernet capacities in both
directions;
19.
E1 status – shows if the E1 channel is connected or not and shows status of LOS and
AIS indications. To see the status, click on the text;
20. System temperature – shows the device internal temperature in degrees by Celsius
and Fahrenheit;
21. Tx polarization – shows transmit polarization and position of connectors and wires;
22. Name (serial number) – shows system name and serial number;
23.
Firmware version – shows currently installed firmware version. It must match on
both ends of the link;
24.
Loopback – shows if any loopback is currently active;
25. RSSI LED – enables or disables RSSI LED indication;
26. Country – allows selecting country in order to comply to regulatory limitations;
27.
Radio antenna diameter – allows selecting antenna diameter you are using;
28. Tx power – allows choosing appropriate Tx power value;
29.
Tx channel selection – allows choosing one of three (30MHz channel bandwidth) or
ten (10MHz channel bandwidth) channels. For channel availability please use
“Spectrum analysis” page;