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11a.
Internal
Graticule-Eliminates
parallax. Risetime,
amplitude
and measurement points are indicated at the
left-hand
graticule
edge.
11b. Reduced Scan Graticule (466
Only)-When
operating
in the reduced scan
mode
the deflection factors,
set
by
the VOL
TS/DIV
and
TIME/DIV
switches, are
referenced
to
the smaller divisions
of
this
graticule. All
measurements should be made
within
this
graticule
when
operating
in the reduced scan mode.
12.
BEAM
FINDER-Compresses
the display
to
within
the
graticule
area independently
of
display position
or
applied
signals and provides a visible viewing level.
13.
INTEN-Controls
brightness
of
the
crt
display.
14.
FOCUS-Adjusts
for
optimum
display definition.
15.
SCALE
ILLUM-Controls
graticule
illumination.
16.
ASTIG-Used
in
conjunction
with the FOCUS
control
to
obtain a well-defined display. It does
not
require
readjustment
in normal use.
17.
TRACE
ROTATION-Adjusts
trace
to
align with
the
horizontal
graticule
lines.
18. REDUCED SCAN
(PULL
- INTEN
knob)-
Reduces display
to
the small reduced scan graticule with
an increase in
writing
rate. 466
only.
19. REDUCED SCAN
LAMP-Indicates
that the
reduced scan mode
is
in operation. 466 only.
20. STORAGE
LEVEL-Varies
the
writing
rate
of
the
crt
in the FAST and
VAR
PERS storage modes.
21.
SAVE-Provides
longer viewing time. It prevents
accidental erasure
of
the stored display.
22. SAVE
INTEN-Varies
the intensity
of
the SAVE
mode.
23.
NON
STORE-Allows
operation
of
the instrument
as
a conventional oscilloscope in the NON STORE mode.
24. VAR
PERS-Permits
variable retention of. the
stored display.
25.
FAST-Used
for fast-writing displays. FAST mode
disables the TRIG MODE switch. It automatically se-
quences
an
erase cycle, unless the VIEW TIME
control
is
in the full clockwise detent (manual).
It waits a time period
determined by the VIEW TIME
control;
then resets the
sweep in a single-sweep mode.
26. VIEW
TIME-Varies
the retention time (per-
sistence)
of
the stored display in the VAR PERS mode. It
varies the time between erase cycles in FAST mode.
27.
ERASE-Erases
the stored display, except in
SAVE
mode when ERASE
is
disabled.
@
466/464 DM44 Operators 7
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