Specifications

ranses. Operatins
the B
Sweep in a trissered
mode
provides
BASIC
4658 DELAYED SWEEP
TiME
a
more stable
display, since
the delayed
display is triggered
at the same
point
each time.
MEASUREMENTS
1. Perform steps
1 through
6 of
the
preceding
-o_perating
the
4658 oscilloscope
in
ALT HORIZ
Masniried sweep
starts
Arter Deray
piocedu'el
lltj.n:.,il:"i'ITlj:3';fi':ttil;}f::1;.
accuracy
than attained
with A
HORIZ DISPLAY.
2. Set the B
(DLY',D)
TRIGGER SOURCE
switch
to the
same
position
as the A
TRIGGER SOURCE
switch'
3. Adiust the
B LEVEL controt.so
the.intensified
zone
Time
Duration
(Basic
4668)
on
the trace
is
stable,
(lf
an
intensified
zone
cannot
be obtained, see
step
4).
1. Obtain
a
Normal Sweep
Display
(refur
to
Basic
Oscilloscope
Displays
section of
this
manual).
Ensure
4. lnability to intensify
the desired
portion
indicates
that
the VAR
TIME/DIV switch
is in the
calibrated
that
the signal does
not meet the triggering
require-
detent.
Depress
either the ALT
HORIZ
DISPLAY
ments. lf the condition
cannot b€
remedied with the
push
button or
the A INTEN
HORIZ
DISPLAY
push
B
Sweep
triggering
conttols or by
increasing the
button.
display amplitude,
you
should
lower
the
VOLTS/
DIV
setting.
set
B
(DLY,D)
TRIGGER SOURCE
switch
to
EXT,
and trigger the
B Sweep
externally'
2'
For the
most accurate
measurement,
set the
B TIME/
DIV
switch
to the
fastest
sweep
that
provides
a
usable
-
5.
Measurements
are
made
and
magnification
factors
are
(visible)
intensified
zone. Vertically
position
the A
calculated
in
the
same mannir
described in the
Sw€ep
display
to
place
the
time
measurement
points
Magnified Sweep
Starts
After Delay
procedure.
on the
center
horizontal
graticule
line
(see
Figure
25).
5E
4658/oMil4 Operato.s
@