Tektronix 465B User Manual

Operating Instructions—
465B Service
®
AC-GND-DC
Switch—Selects
the method used
to
couple a signal
to
the
input of the vertical amplifier
AC position
—
Signals
are capacitively coupled
to
the vertical
amplifier. The
dc component of the
Input signal
is OlocKed.
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
withatriggerable
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 erf.
Each VERTMODE
push button must
be depressed
and released
a second time to remove
the signal from the
corresponding
displays.
CH
1—
Displays
Channel 1 signals when
pushbutton is
pressed in.
A TRIG VIEW—Displays
the A external trigger
input signal when
push button
is
pressed
in and
when the A TRIGGER
SOURCE
switch is set to
EXT or EXT/10.
ADD—Displays the
algebraic
sum of the
Channel
1 and Channel
2
input signals
when ADD push
button
is pressed in. The INVERT
switch in
Channel
2
allows
the display
to be either CH 1
plus CH
2 or CH 1 minus CH
2. The ADD
capability
is useful for common-mode
rejection
to remove
an undesired signal
or dc offset.
CHOP
ALT: OUT—The 465B
"chops”
(switches)
between two or more of the
display modes at a
500-kHz rate when
CHOP
ALT: OUT button is
pressed in.
When released, the
465B "alternates"
between
two or more of the
four display modes
at
the
end of each trace sweep.
CHOP and
ALT
functions
are disabled
if
only one
VERT MODE
push
button (CH
1.
CH
2,
ADD,
or A TRIG VIEW)
is selected
or if the X-Y mode
is selected.
CH
2—
Displays
Channel
2 signals when
push
button is pressed in
g)
20 MHZ BW LIMIT
(PULL BW OUT)
Switch— Limits
the bandwidth of
the vertical amplifier
to ap-
proximately
20 MHz when pressed in.
Push button
must
be
depressed
and released
a second time to
regain full
100-MHz bandwidth
operation.
(H))
20 MHz
BW LIMIT Indicator—
This LED
is il-
luminated whenever
the
20
MHz
BW LIMIT
push
button is pressed
in, and bandwidth
is limited
to
20 MHz.
(7f)
INVERT—Inverts
Channel
2
display
when push
button is
pressed in. Push button must
be depressed
and released
a second time to
present a noninverted
display.
DISPLAY
AND
CALIBRATOR
Refer
to Figure
2-4
for location
of items 12 through 19
®
Internal
Graticule— Eliminates
parallax. Risetime
and amplitude measurement
points are indicated at
the left edge of the graticule.
(|3)
BEAM FIND
Switch—Compresses the display
to
within the
graticule area and provides
a visible
viewing intensity to aid
in locating off-screen
dis-
plays
(T?)
INTENSITY
Control—
Determines overall
brightness
of the A Sweep and
B Sweep
ert
displays
Interacts
with B INTENSITY
control on B Sweep
ert
displays.
(l?) FOCUS Control—
Adjusts for optimum
display
definition.
@
2-4

Tektronix 465B Specifications

General

Brand	Tektronix
Model	465B
Category	Test Equipment
Language	English