Specifications

ffiH
GND
position-The
input
of the
vertical
amplifier
is
grounded
to
provide
a
ground
reference
and
to
allow
the input
coupling
capacitor
to
precharge.
DC
position-All frequency
components
of
the
input
signal
are
passed
to
the
vertical
input
amplifier.
VERT
MODE Switches-Select
mode of operation
for
vertical
amplifier
system.
When
either
CHOP
or
ALT
mode
is selected,
display
of
any
combination
of CH
1, CH
2,
ADD,
and
A
TRIG
VIEW
(EXT
ONLY)
is
allowed.
When all
buttons
are
out, a
single
trace
will
be displayed,
provided
that
either
TRIG
MODE
is in
AUTO or
TRIG
MODE
is in
NORM
with a
triggerable
signal
applied
to
a
vertical
input connector.
This trace
will
not display
intelligence
and
is unaffected
by
position
controls.
NOTE
Four display
traces
may
simultaneously
be
observed
on
the
4658
crt.
Each VERT
MODE
push
button
must
be
depressed
and
released
a second
time
to
remove
the
signal
from the
corresponding
displays.
Figure 2.
Vertical
controls,
connectorc,
and
indicators'
REV A AUG
1979
4658/DM44
Operators