Operating Instructions-2225 Service
CONTROLS, CONNECTORS, AND INDICATORS
The following descriptions are intended to familiarize
the operator with the location and function of the
instrument's controls, connectors, and indicators.
Refer to Figure
9-14
in the foldout pages for the
location of all controls mentioned.
POWER
AND DISPLAY
@
INTENSITY Control-Adjusts the brightness of
all displayed waveforms.
@
BEAM
FIND Button-Compresses the vertical
and horizontal deflection to within the graticule
area and intensifies the display to aid the user
in locating traces that are overscanned or
deflected outside of the crt viewing area.
@
FOCUS Control-Adjusts for optimum display
definition. Once set, proper focusing is
maintained over a wide range of display
intensity.
@
TRACE ROTATION Control-Permits align-
ment of the trace with the horizontal graticule
line. This control is a screwdriver adjustment
Trace separation between the magnified and
unmagnified traces is independent of the
Channel POSITION control settings. In other
I
Horizontal modes, the TRACE SEP control is
inoperative.
I
@
Channel
2
Vertical POSITION Control-Con-
trols the vertical display position of the
Channel
2
signal. In
X-Y
mode the control
vertically positions the display.
@
Vertical MODE Switch CH 1-BOTH-
CH 2-Selects either a single channel for dis-
play or the dual-channel display mode.
CH 1-Selects only the Channel
1
input sig-
I
nal for display.
BOTH-Selects a combination of Channel
1
and Channel
2
input signals for display. The
CH 1-BOTH-CH
2
switch must be in the
BOTH position for ADD, ALT, and CHOP
operation.
CH 2-Selects only the Channel
2
input sig-
nal for display.
that, once set, should require little attention
@
CH
2
INVERT Switch-Inverts the Channel
2
during normal operation.
display when in the CH
2
INVERT position. With
CH
2
inverted, the oscilloscope may be
@
POWER Switch-Turns instrument power on
operated as a differential amplifier when the
or off.
BOTH-ADD vertical mode is selected.
@
Power On Indicator-Lights up while instru-
@
Vertical MODE Switch ADD-ALT-CHOP-Sets
ment is operating.
the dual-channel vertical display mode.
VERTICAL
@
Channel 1 Vertical POSITION Control-Con-
trols the vertical display position of the
Channel
1
signal. In
X-Y
mode the control is
inactive.
@
TRACE SEP Control-Permits the magnified
traces that appear in Horizontal MAG Mode to
be positioned up to three divisions above the
associated Channel
1
or Channel
2
traces.
ADD-Displays the sum of Channel 1 and
Channel
2
input signals when BOTH is also
selected. The difference of the Channel
1
and Channel
2
input signals is displayed
when the Channel
2
signal is inverted.
ALT-Alternately displays the Channel
1
and
Channel
2
input signals. The alternation
occurs during retrace at the end of each
sweep. ALT vertical mode is most useful for
viewing both channel input signals at sweep
rates of
0.5
ms per division and faster.
Scans
by
ARTEK
MEDLQ
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