1141780,
Rev
002vx
3
‐
25
MEOLink
User
Manual
Field
Definition/Configuration
MODCOD Mask Properties
Modulation Codes
Checked modcodes are available to be used by
the system
Figure
29:
ACM
Configuration
Screen
3.2.5.4
AUPC
Advanced
Uplink
Power
Control
(AUPC)
conserves
satellite
power
through
outbound
carrier
attenuation
adjustments
based
on
Es/No
and
link
utilization.
When
link
utilization
is
low
and
link
conditions
are
favorable,
AUPC
adds
attenuation
to
reduce
the
transmit
power.
When
link
utilization
increases
or
link
conditions
become
less
favorable,
attenuation
is
reduced
to
increase
the
transmit
power.
When
full
capacity
is
reached,
AUPC
applies
zero
attenuation
and
the
MEOLink
modem
operates
at
the
fully
configured
transmit
power
level,
a
setting
that
presumably
contains
sufficient
margin
to
provide
the
desired
level
of
service.
It
is
desirable
to
have
the
update
interval
of
AUPC
much
slower
than
that
of
ACM
so
that
as
power
changes,
the
ACM
algorithm
has
an
opportunity
to
run
and
change
ModCods,
thus
enhancing
the
effect
of
AUPC
to
settle
into
the
configured
utilization
range.
The
AUPC
algorithm
monitors
the
received
Es/No
levels
of
the
terminals
to
which
it
transmits,
as
well
as
the
link
utilization
to
determine
the
best
power
adjustments.
The
operator
may
configure
the
AUPC
parameters
specified
in
Table
7
to
customize
the
algorithm.
Enabling
and
configuring
AUPC
requires
two
steps:
1.
From
the
Configuration
tab,
select
AUPC.
From
this
screen,
configure
the
AUPC
parameters
with
appropriate
values;
see
Figure
30.
Fortunately,
AUPC
can
generally
be
operated
with
default
values.
Содержание MEOLink
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