Procedure, Field Replacement, Level Cage Kit, Base Exit
Page
2
of
9
Document No
135266 Rev B
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consent of Sea Tel, Inc.
6.
Verify
Stabilization:
The
purpose
of
this
procedure
is
to
physically
move
the
systems
axis
under
static
conditions,
introducing
error
into
the
PCU’s
control
loop
and
then
verify
the
system
is
able
to
return
to
its
level
position
(stabilize
itself)
efficiently.
These
tests
can
be
performed
by
monitoring
the
sensor
outputs
on
DacRemP
or
also
by
physically
moving
the
antenna
and
observing
how
it
responds.
1.
Turn
tracking
off
and
Open
the
DISP_V
screen
of
DacRemP,
it
will
now
plot
the
level
position
of
the
tilt
sensor.
Alternatively
observe
the
pedestal.
Normal
trace
is
+/
‐
4
divisions
from
red
line.
2.
Verify
Cross
Level
response:
Push
the
cross
level
beam
down
to
the
left
(CCW)
and
hold
it
in
position.
Verify
that
the
CL
trace
on
DacRemP
moves
down
an
equal
amount
to
the
movement
exerted
on
the
axis.
Release
the
Axis
and
verify
the
DacRemP
trace
returns
(or
the
systems
axis
returns)
back
to
its
original
position
instantly,
without
deviating
or
taking
time
to
settle.
Now
push
the
cross
level
beam
down
to
the
right
and
hold
it
in
position.
Verify
that
the
CL
trace
on
DacRemP
moves
up
an
equal
amount
to
the
movement
exerted
on
the
axis.
Release
the
Axis
and
verify
the
DacRemP
trace
returns
(or
the
systems
axis
returns)
back
to
its
original
position
instantly,
without
deviating
or
taking
time
to
settle.
3.
Verify
Level
(Elevation)
response:
Push
the
Reflector
up
in
Elevation
(CCW)
and
hold
it
in
position.
Verify
that
the
LV
trace
on
DacRemP
moves
down
an
equal
amount
to
the
movement
exerted
on
the
axis.
Release
the
Axis
and
verify
the
DacRemP
trace
returns
(or
the
systems
axis
returns)
back
to
its
original
position
instantly,
without
deviating
or
taking
time
to
settle.
Push
the
Reflector
down
in
Elevation
(CW)
and
hold
it
in
position.
Verify
that
the
LV
trace
on
DacRemP
moves
up
an
equal
amount
to
the
movement
exerted
on
the
axis.
Release
the
Axis
and
verify
the
DacRemP
trace
returns
(or
the
systems
axis
returns)
back
to
its
original
position
instantly,
without
deviating
or
taking
time
to
settle.
If
using
DacRemP
the
trace
should
look
similar
to
this
image,
note
how
after
each
movement
the
system
returns
to
its
level
position
efficiently
without
taking
time
to
settle.
Summary of Contents for Base Exit
Page 1: ......
