Alcad 918 Serie Manuel D'utilisation page 151

If the appliance is not synchronized on all four transponders, the quality indication is red.
If the appliance is synchronized on all four transponders but the reception quality is
average, the quality indication is orange.
If the appliance is synchronized on all four transponders and the reception quality is
good, the quality indication is green.
Attention:
To identify a satellite, it must be synchronized on all
However, some transponders are regularly modified.
See the frequency map of the satellite if a transponder does not seem to work.
Some switches or LNB work only with DiSEqC commands. In this case, position the OL and the
polarization on DiSEqC in the Configuration page LNB-DiSEqC.
(Attention: the Check Sat is slower with DiSEqC commands).
42
4 transponders
.