CONTROLS,CONNECTORS,ANDINDICATORS
VERTICAL
Refer
to
Figure 2 for location
of
items 1 through 11.
(})voLTS/DIV
Switches-Select
the vertical deflection
factor for Channel 1 and Channel 2
in
a 1-2-5
se-
quence. VAR control must be
in
the calibrated
detent
to
obtain a calibrated deflection factor.
0 VOL TS/DIV
Readouts-Consist
of
two light emitting
diodes (LED) for each channel, located beneath the
skirt of each VOL TS/DIV knob. One
LED
or
the
other will light
to
indicate the correct deflection
factor. The lOX
LED
is
illuminated only when a lOX
probe with a scale-switching coding-ring
contact
is
connected
to
the
input
of
the
oscilloscope; otherwise,
the 1 X
LED
is
illuminated.
@vAR-Provides
continuously variable uncalibrated
deflection factors between
the
calibrated settings
of
the VOL TS/DIV switches.
(!)uNCAL
Indicator-A
LED
that
lights when the
VAR VOLTS/DIV control
is
out
of
the calibrated
detent,
and the vertical deflection factor
is
uncalibrated.
(!)POSITION
Controls-Determine
the vertical position
of
the display on
the
crt.
In
the
X-Y
mode, the
Channel 2 POSITION control moves the display
vertically (Y-axis), and the Horizontal POSITION
control moves the display horizontally (X-axis).
(!)cH
1 OR X and
CH
2 OR Y
bnc
Connectors-Provide
for application
of
external signals
to
the
inputs
of
the
vertical amplifier.
In
the
X-Y
mode,
the
signal con-
nected
to
the CHl OR X connector provides hor-
izontal deflection, and the signal connected
to
the
CH
2 OR Y connector provides vertical deflection.
These connectors each include a coding ring
that
acti·
vates
the
scale-factor-switching circuit whenever a
1
OX
scale-factor-switching probe is connected.
G)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 de
component
of
the
input
signal
is
blocked.
4
465B/DM44
Operators
@
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