-Colon
The optionalleadingcolon in a command line indicates the keyword
immediately following
is
at
the root level (a subsystem).
A colon between command keywords indicates the pointer is to step
down
one level to the immediately following keyword.
-Semicolon
The semicolon separates commands within the same message without
changing levels.
-Whitespace (space
bar
or
tab)
Whitespace
must
be
used
to separate
commands
from parameters.
Whitespace
must
notbe
used
withina command keyword. Otherwise,
SCPI usually ignores the whitC6pace.
-Comma
When a command requires a series of parameters, they
must
be
separated
by
commas.
-Question
Mark
The question mark is placed after the programheader creating a query.
A parameter
may
be placed after the question
mark
where appropriate
(for example, ...LIMits? <trace
name».
Sorne event commands
do
not
have a query form (for example, DELete). Sorne commands are queries
only (for exampleFREE?).
-Common
Commands
Common commands (*RST, *TRG, etc.) are acted
upon
the same
way
regardless
of
which
subsystem
or
into
which
level
of
the
SCPI
test
program
they
are written.
Mer
execution of the common command,
the
SCPI
command
"pointer"
will
return
to
the
point
where
it
was
interrupted (the exception is*CLS, the "pointer" is setbackto the root).
The *RST
command
will
reset all subsystems to
the
default
values
exceptthe Trace memory;
it
does notset the "pointer" back to the root.
5.2.5 Text Symbols
-Square brackets
Commands
or
portions
of
parameters that are optional are enclosed
by
square
brackets
([
]).
-Angle brackets
Angle brackets
«
»enclose
parameters
that
are
to
be
entered
by
the
user,
usually
either
numeric
label (names)
or
numeric
data
(levels,
values).
-Verticalline
The verticalline ( 1) represents
an
"exclusive OR",
one
of
the
values
shown
must
be
used.
Remote Operation 5-5
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