Field Service Procedure – Replacement PCU Kit, ST88, ST94 & ST144
Page
22
of
22
Document No
137738 Rev A
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22.
Calibrating
the
MK2
PCUs
N0
Parameter:
As
PCUs
are
universal
across
the
models
ranges
it’s
necessary
to
configure
the
N0
parameter
of
the
replacement
PCU
to
the
specification
of
the
pedestal
it
will
be
installed
on.
This
will
set
the
motor
gains
for
CL
(N1),
EL
(N2),
AZ
(N3)
and
also
configure
the
dishscan
pattern(s)
(N7)
for
the
size
of
the
pedestals
reflector(s).
Without
the
N0
parameter
configured
in
the
PCU
the
antenna
won’t
initialize
as
none
of
the
motor
gains
will
be
set,
the
status
window
of
the
DAC
will
display
the
model
number
of
the
antenna
as
“xx09”
opposed
to
ST88,
ST94,
or
ST144
etc.
Enter
into
the
remote
command
screen
and
input
the
correct
N0
parameter
for
the
model
of
antenna
as
per
the
below
table.
I.e.
the
N0
parameter
for
a
ST88
is
“212”
so
enter
“N0212
(“N0”
for
the
system
parameter
+
“212”
for
the
antenna
model).
Enter
into
the
Remote
Parameters
screen
of
the
DAC
and
save
the
settings
to
the
PCU
motherboard.
Cycle
power
to
the
system
to
reinitialize
the
pedestal,
verifying
the
N0
has
saved
and
the
system
initializes
correctly.
Model
N0
N1
N2
N3
N7A
ST88
212
050
050
030
149
ST94
213
050
050
030
149
ST144
/
144S
208
051
051
035
192
Summary of Contents for ST144
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