Kathrein CAS 09 Service Manual download pdf (Page 15)

935.2098/C/1205/7.8e

c) Fine alignment

 Loosen again the screw on the elevation scale and

move the antenna slightly up and down until

– the strongest signal is shown on the measuring

instrument

– or best picture quality is obtained on the TV set. 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 boundery

positions.

 Now alternately correct the direction (Azimuth) and the

inclination (Elevation) until there is no more improve-

ment 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).

d) Final tightening up of antenna

 Finally, hand-tighten the wing nuts on the mast clamp

in alternation. Then tighten the wingnuts by 1 1/2

turns using an open-ended spanner

(SW 17 mm) (torque wrench 10-20 Nm).

 Next tighten up the screws at left and right on the inc-

lination scale support by

 first hand-tightening using the shorter end of the hexa-

gon spanner

 then further tightening by 1/4 to 1/2 turn using the

spanner’s longer end

 Last of all, check again that all screw connections

have been done properly

 and 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.

Zenith

Elevation

Horizon

West

South

Azimuth

hand-tighten Tighten fully: 1 1/2 turns

East

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 31 32

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Kathrein CAS 09 Service Manual Page 15