Kathrein CAS 120 Mode D'emploi page 15

b) Setting the direction (Azimuth)
For the following steps you need an assistant if you
cannot operate an antenna measuring instrument nor
watch on your television set which you have connected
to a satellite receiver the result of your alignment work.
Select on your satellite receiver a programme well
known in order to make sure you are aligned to the
desired satellite.
Roughly align the antenna towards the south.
Then slowly turn the antenna around the mast axle to
the left and then to the right, until you obtain the best
picture for the chosen programme.
c) Fine alignment
Loosen again the screws A on the elevation scale.
Move the antenna slightly up and down by turning the
fine wing nut B, until
– the strongest signal is shown on the measuring
instrument
– or best picture quality is obtained on the TV set
(only for analogue reception): Move the antenna slightly
up and down until you see the first "spikes" on the
screen of your TV set. The best picture quality will be
found in the middle of these boundary positions.
Now alternately correct the direction (Azimuth) and the
inclination (Elevation) until there is no more
improvement of the measured value or the picture
quality.
Note: On tightening-up the nuts on the mast clamp, a
slight movement of the antenna may occur! You need to
take this into account during fine adjustment (and exploit
it to get a very precise adjustment if need be).
Also, optimise the polarisation angle(s) of the feed
system(s) and the angle of the swivelling support once
more.
d) Final tightening up of antenna
Finally, tighten all screws.
Check again that all screw connections have been done
properly.
Secure the cable using cable ties along the full length of
the antenna carrier so that it does not chafe and sustain
damage due to wind effects.
West
Azimuth angle
Attention!
Check if the antenna is properly secured after
unusual conditions (bad storms, heavy ice
build-up, etc.).
Zenith
Elevation angle
East
South