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personnel follow generally accepted safety procedures in addition to the safety precautions
specified in this manual.
Whenever it is likely that safety protection is impaired, the unit must be made in-operative and
secured against unintended operation. The appropriate servicing authority must be informed. For
example, safety is likely to be impaired if the unit fails to perform the intended measurements or
shows visible damage.
Ensure that the cabinet is proper connected to the protective earth conductor.
The circuit breaker, that fuses the mains for the sat-nms ACU has to switch off all phases AND the
neutral wire as well.
WARNINGS
The outside of the equipment may be cleaned using a lightly dampened cloth. Do not use
any cleaning liquids containing alcohol, methylated spirit or ammonia etc.
Follow standard Electrostatic Discharge (ESD) procedures when handling the Unit.
Apply the appropriate voltage according to the attached schematic.
In case of switching off all the circuit breakers is still voltage available at the mains terminals!
Only use shielded cable to connect the AZ- and EL-Motor. The other components in the
cabinet might be jammed through the harmonic waves the frequency inverters inject into the
motor wires.
Use only double shielded twisted pair cables (e.g. CAT7 Ethernet cable) to connect the
resolvers to the sat-nms ACU
Only ACU-ODU : If the Unit is equipped with an optional air ventilation, avoid direct contact
with jets of water, normal rain is no problem.
3 The sat-nms ACU19V
The sat-nms ACU19V is an advanced automatic tracking antenna controller. It can be used as a
cost efficient antenna tracking system to replace the Vertex / General Dynamics Satcom
Technologies Model 7200 Antenna Control Unit keeping the outdoor 7150 Antenna Drive Unit as it
is. The replacement is simple plug & play by reusing the existing cables. The system is based on
the sat-nms ACU-ODM Module and provides Model 7200 ACU fully compatible rear panel
connectors in the 19" 1RU chassis. The sat-nms ACU19V points any antenna size precisely on
the satellite and performs a fully automatic and accurate inclined orbit satellite tracking with an
improved adaptive tracking algorithm. The sat-nms ACU19V records the tracked positions over
several days and calculates based on this data a precise mathematical model, which is used to
predict the antenna position. This reduces the step-track failures and provides continuous
operation in case of a beacon receive failure. In the Program Tracking Mode the antenna follows
a path defined by a file that contains time stamped azimuth, elevation and polarization values.
These values have usually been calculated by external software.
This chapter gives a short overview to the interfaces of sat-nms ACU19V. For more detailed
informations refer to the chapters below. The following pictures show the front and rear view of
the unit.
sat-nms ACU19V Front panel view
(C) 2022, SatService GmbH
www.satnms.com
ACU-19V-UM-2209 Page 7/64
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