HP 54501A - Page 285

When
the
"user
defined"
standard
is
selected,
the
source
and level
are
set
in the
same
manner
as
before.
The
QUALIFY
command
is
used
to set
the
"qualify
on"
field.
This
command uses
the
parameters
HIGH and
LOW.
The
edge defined
by
the
QUALIFY
command
must
occur
within
the
range
of time
values
that
are
displayed
in
the
next front
panel
field.
The
TRIGGER:CONDITION RANGE
command
sets
the
greater
than and
less
than
time
values.
In
order
to
actually
generate
a
trigger
the
qualified
conditions
must
be
met
within
the
specified
time.
To
set
the
time
values
send "TRIGGER:CONDITION
RANGE,
<
gt_value
>,
<
lt_value
>".
The
next
field
"trigger
on"
is
set
with
the OCCURRENCE
command
and
OCCURRENCE:SLOPE
command.
To
set the
number
of
occurrences
send
the
command
":TRIGGER:OCCURRENCE
<
number
>" and to
set
the
slope
for
the
occurrences
send
the
command
":TRIGGER:OCCURRENCE:SLOPE POSITIVE".
The
slope
command
can
also
use
NEGATIVE
as
a
parameter.
The
description
for
each
of
the
commands
will
tell
you
in which
modes
that
command
is
valid.
See
figure
16-1
for Trigger
subsystem
commands
syntax
diagram.
Trigger Subsystem
16-8
HP
54501A
Programming