Specifications

SLOPE
Switch-Selects
the slope
of
the signal
that
triggers
the sweeP.
+:
Sweep
can
be triggered
from the
positive-going
portion
of
a trigger
signal.
-i
Sweep
can
be
triggered
from the
negative-
going
portion
of a trigger
signal.
LEVEL
Control-Selects
the
amplitude
point
on the
trigger
signal
at which
the sweep
is triggered.
lt
is
usually
adjusted
for
the
desired
display after
trigger
SOU
RCE, COUP
LING,
and SLOPE
have been selected.
CH
1-A
sample
of
the
signal
applied
to
theCH
1
input
is used
as a
trigger
signal.
Channel
2
signal
is
unstable
if it
is not time'related.
CH 2-A
sample
of the signal
applied
to the
CH
2
input
is used as
a trigger
signal.
Channel
1 sigpal
is
unstable
if it is
not time'related.
LINE
(A
Trigger
Circuit Only)-A
sample
of the
power-line
sinusoid
is
used as a
trigger
signal.
lt
is
useful
when
the
input
signal
is time-related
(multiple
or
submultiple)
to the
line
frequency or
when
it is desirable
to
provide
a
stable
display
of
a
linb-frequency
component
in a
complex
waveform..
EXT-Signals
connected
to
the
External Trigger
input connectors
are
used
for
triggering.
External
signals
must be
time'related
to
the
displayed
signal
for a stable
display.
lt
is useful
when
the
internal
signal
is
either too
small
or
contains
undesired
signals
that
could
cause
unstable
triggering.
lt is
also
useful
when
operating
in the
CHOP
mode.
EXT and
EXT/I0 trigger
signals
may
be
viewed
on the
crt by
selecting
A TRIG
VIEW
on the
VERT
MODE switch.
SOURCE
Switch-Determines
trigger
signal
coupled
to
the
circuit.
NORM-Trigger
source
is
a
displayed
on
the crt.
the source
of
the
input
of the
trigger
sample
of the signal
@
12
4658/DM44
Operators