Planar
TR1300/1,
TR5048,
TR7530
Programming
Manual
SCPI
11
level.
The
final
nodes
are
called
leaves.
The
entire
sequence
from
root
to
the
leaf
makes
up
the
command.
For
example,
part
of
SOURCe
functional
system
looks
as
follows:
:SOURce
:POWer
:CENTer
:STARt
:SPAN
:STOP
[:LEVel]
:SLOPe
[:DATA]
:STATe
This
SOURce
branch
has
several
levels,
where
CENTer,
STARt,
SPAN,
STOP,
DATA,
STATe
are
the
leaves,
which
represent
the
following
six
commands:
:SOURce:POWer:CENTer
:SOURce:POWer:STARt
:SOURce:POWer:SPAN
:SOURce:POWer:STOP
:SOURce:POWer[:LEVel]:SLOPe[:DATA]
:SOURce:POWer[:LEVel]:SLOPe:STATe
The
tree
can
contain
subsystems
and
leaves
with
the
same
names
if
they
belong
to
different
branches,
e.g.
CENTer
leaf
is
on
the
tips
of
different
branches:
:SOURce
:SENSe
:POWer
:FREQuency
:CENTer
:CENTer
4.2
Subsystems
A
colon
(':')
separates
the
subsystems.
The
subsystems,
which
follow
the
colon
are
of
a
lower
level.
For
example,
in
command:
:SOURce:POWer:STARt
the
start
power
STARt
is
a
part
of
POWer
subsystem,
which
is
a
part
of
SOURce
subsystem.
The
stop
power
is
also
a
part
of
:SOURce:POWer
subsystem.
It
is
specified
by:
:SOURce:POWer:STOP
The
first
colon
in
the
line
can
be
omitted,
for
example:
SOURce:POWer:STOP
