Target name --- The name of the satellite the antenna is pointing to. Click to the name to get
a dialog page where you can change the name. The name is stored together with a
satellite's pointing at the
target memory
page. If you change the target pointing values, the
target name is set to 'unknown' by the ACU. Hence you first should adjust the antenna
pointing, then enter the satellite's name.
Tracking mode --- sat-nms ACUs with the tracking option installed display the actual tracking
mode / state in this field. ACUs without tracking show 'OFF' all the time. In STEP and
ADAPTIVE tracking modes this field shows what the tracking actually is doing and some
information about the tracking data in memory:
fill --- tells how many hours of step track data for calculating a model the ACU actually
has in memory. This data may be used in ADAPTIVE mode to predict the satellite
movement in case of a beacon failure. The smoothing which may be applied to the step
track also relies on this data.
age --- means the age of the most recent successful tracking step. In other words this
describes how many hours ago the beacon was lost in case of a beacon failure.
Beacon level --- This field shows the beacon level as read from the beacon receiver.
Depending on the source defined at the
Setup
page, this either is the beacon level reported
by a sat-nms LBRX beacon receiver via TCP/IP of the level derived from the ACU's analog
input.
Temperature --- The actual temperature inside the ACU enclosure. This value is for
information only.
ACU Faults --- If there are any faults with the ACU, they are displayed in this field. If there is
more than one fault at a time, the ACU concatenated the fault descriptions. More detailed
information about faults are available in chapter
Faults and Tracking
. If one axis stops
operation due to a fault, the step tracking also stopps operation. Possible faults are:
EMERGENCY-STOP --- Someone opened the emergency stop circuit. The ACU stopped
all motors and stays in this state until the 'RESET' button at the navigation bar is
clicked.
HUB-FAULT --- The ACU detected a 'hub fault' condition.
CABINET-OPEN --- The ACU detected a 'cabinet open' condition.
BCRX-TIMEOUT --- If the ACU reads the beacon level via TCP/IP from a sat-nms LBRX
and the latter does not respond, a BCRX-TIMEOUT fault is reported
Tracking Faults --- If the ACU has the tracking option installed, any faults of the tracking
module are shown in this field. With tracking option, this field is always empty.
AZ/EL Tracking State --- If the ACU has the tracking option installed and ADAPTIVE tracking
is selected, these give some information about the model of antenna/satellite movement the
ACU has calculated from the step track data:
M(model) --- The complexity of the model the ACU uses (small/medium/large). With a
small amount of tracking data available, the ACU uses a smaller, less complex model
than with a completely filled tracking memory.
A(amplitude) --- The amplitude of the antenna movement in this axis, expressed as a
percentage of the full 3dB beamwidth.
J(jitter) --- The jitter of the antenna movement in this axis, expressed as a percentage of
the full 3dB beamwidth.
B(beamwidth) --- The 3dB beamwidth as calculated by the ACU from the antenna
diameter in this axis and the beacon receive frequency. This is the full beamwidth, the
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ACU-ODM-UM-2209 Page 28/73
