HP 54501A - The EDGE Trigger Mode

The
EDGE
Trigger
Mode
The
Edge
Trigger
Mode
is
the
easiest
trigger
mode
to
understand
and
use
from
the
front
panel
or
over
the
HP-ffi.
This
is
true because
the
Edge
Trigger
Mode
has the least
number
of
parameters
to
be
set.
This
explanation
of the
trigger
mode
commands
follows
the front
panel keys
very
closely.
Refer
to
the
Front
Panel
Operation Reference
for further
explanations
of the
trigger
operation.
In
this
mode you
must set
the
trigger
source,
using
the TRIGGER
SOURCE
command.
This
selects
the
channel
that
the
oscilloscope will
trigger
on.
The
argument
for
this
command
is
channell
through
channel4.
The
next
thing
that
must
be
set
in
this
mode
is
the
trigger
level.
This
value
is
set
using
the
LEVEL
command
and
can
be
set for
each
trigger
source.
The
trigger
level
values
that
are
set
in
this
mode
are
used
for
all
modes
except
TV
Trigger
Mode, or
conversely, the
LEVELS
set
in
the
PATTERN, STATE,
or
DELAY
modes
will
set
the
EDGE
LEVELS
as
weU.
The
trigger
level
is
used
in
the
PATTERN
and
STATE
mode to
define
the
voltage
that
determines
if
the
input voltage
is
a logic
high
or
a
logic
low
for
the
logic
triggers.
The
next
field
to
be
set
in
the
Edge
Trigger
Mode
is
the
actual
edge
that
will
create
the
trigger. This
command
is
the
SLOPE
command
and
can
be
set
to
POSITIVE
or
NEGATIVE
for
each of
the
sources.
The last
setting
in
this
mode
is
the
Trigger
Holdoff
value.
This
value
is
only
used for the
EDGE
mode.
HP
54501A
Programming
Trigger
Subsystem
1&.3