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'Funktional Description.
General
'The Broadcast. and Teo oinmiriceeone Satellites are placed i in different epee in oibit If Stations with different idcations. are 5 to. be
7
received , the parabolic dish must. be aligned by a dish motor to the appropriate. Satellite. This requirement is carried. out by the Dish
t
Positioner AP 201. It sets the Satellite receiving dish automatically to the pre-programmed position. An Actuator Reed-switch, Hall sensors
or Opto-couplers can be connected to the AP. For these sensors alternative supplies of 5V and 12V are provided. The Positioner can be
used as an "separate unit" or together with the STR 200/STR 20 (operation mode switch position "1"). In combination. with the STR 201
the Positioner can be remotely controlled bya joy-stick cable (operating mode switch position "0"). This commercially availabe cable is not
supplied with the unit. It can be obtained under the een
ML-D 9 PS No. 98 1036-46, from. eg. Conrad. Electronic, Klaus- Conrad-Str.
1, D 8542 pueonal:
Clreuit Description |
|
;
The Dish motor is driven from a 36V#20% supply vonane (max, sakes current 4A, eitinuouse current 2A) andc can be Sultehed via the Relays
RL641 and RL643 to different directions. The Stabilising IC 618 produces the 12V for the relays and the operating supply for the connections
to the Actuators on-the clamp .terminals. For the +5V. Opto-couplers- or Hall sensors the IC 631.provides a +5V ext. voltage. To avoid.a
malynetene of the Processor i oy when there is a 1 short-circuit on the +5V ext. connection the AP | is gren from a a separate +5V ieee
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Fae hae
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Mee
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Top view of aerial system
Action radius
Position 1 corresponds to the mechanical or
of aerial
electronical end stop EAST
Position 2 corresponds to the mechanical
or
electrical end stop WEST.
The design of motors and accessory parts for —
orientable
parabolic aerials depends
on the
manufacturer. The figures 2a and 2b show two
typical aerial constructions.
Fig. 2a: Motor mounted to left-hand side of ae- |
rial
Action radius
of aerial
>
-*
wl
-
a"
Fig. 2b: Motor mounted to right-hand side of-aerial: —_
Preconditions for adjusting and operating the aerial positioner
@ The aerial must be correctly mounted (see mounting instructions) —
®@ The action radius of the aerial system must be fixed between the most southern and most western 6felliie which can be
received (avoid obstructions such as trees, walls; etc. within the action radius). See Fig. 2.
@ Ensure a correct connection of the motor to the aerial Posey (see connecting diagram | in the operating instructions of
the motor).
@ Select the correct operating mode of the aerial positioner (the operating mode selector is located on the bottom of the
positioner). See leaflet "Application Possibilities for the Aerial Positioner").
@ To ensure a good heat dissipation, place the satellite receiver onto the aerial positioner.
@ When adjusting and operating the positioner, follow the given sequence of steps.
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