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(7)
VARIABLE, PULL x 5 GAIN Controls
VARIABLE:
Rotation provides fine control of channel 2 vertical
sensitivity. In the fully clockwise (CAL) position,
the vertical attenuator is calibrated. In X-Y opera-
tion, this control becomes the fine horizontal gain
control.
PULL x 5 GAIN:
When
pulled out,
multiplied by five and for X-Y operation the X-axis
sensitivity is multiplied accordingly. In x 5 GAIN
mode, the vertical gain is increased and the trace
becomes thickness.
(D
AC-GND-DC Switch
Three-position lever switch which operates as follows:
A C :
Blocks dc component of channel 2 input signal.
GND:
Opens signal path and grounds input to vertical
amplifier. This provides a zero-signal base line, the
position of which can be used as a reference when
performing dc measurements.
DC:
Direct input of ac and dc component of channel 2
input signal.
(9)
INPUT Jack
Vertical input for channel 2 trace in normal sweep opera-
tion. External horizontal input in X-Y operation.
@)
CH2 INV Push-button Switch
In the NORM position (button released), the channel 2
signal
is non-inverted.
In
engaged), the channel 2 signal is inverted.
(Q) y POSITION, X - Y o
Control
Rotation adjusts vertical position of channel 2 trace.
In X-Y operation adjusts horizontal position of display.
®
MODE Switch
Five-position
lever
switch
operating modes of the oscilloscope.
C H 1 :
Only the input signal to channel 1 is displayed
as a single trace.
CH2:
Only the input signal to channel 2 is displayed
as a single trace.
ALT:
Alternate
sweep is selected regardless of
sweep time as dual trace (CH1 and CH2).
CHOP:
Chop sweep is selected regardless of sweep
time at approximately 2 5 0 kHz as dual trace
(CH1 and CH2).
ADD:
The waveforms from channel 1 and channel 2
input
signals are added
displayed as a single trace. When the CH2 INV
(Q) button is engaged, the waveform from
channel 2 is subtracted from the channel 1
waveform and the difference is displayed as a
single trace.
the
VOLTS/DIV setting is
the
INV
position
(button
which
selects
the
basic
and the
sum is
I—NOTE:
The various vertical mode settings are related to
horizontal mode and trigger source. See the section
on HORIZ DISPLAY and SOURCE for a description of
this relation ship.
@
20 MHz BW Push-button Switch
Limits the vertical bandwidth to approximately 20 MHz
when engaged this button.
@
POWER, S C A L E ILLUM Controls
Fully counterclockwise rotation of this control (OFF posi-
tion) turns off oscilloscope. Clockwise rotation turns on
oscilloscope. Further clockwise rotation of the control in-
creases the illumination level of scale.
(3) PILOT Lamp
Lights when oscilloscope is turned on.
@ J L GND terminal/binding post.
Earth and chassis ground.
@
C A L , 1 Vp-p, ^
1 kHz Terminal
Provides 1 kHz, 1 Volt peak-to-peak square wave signal.
This is useful for probe compensation adjustment.
® ) T R A C E ROTATION Control
Electrically rotates trace to horizontal position.
Strong magnetic fields may cause the trace to be tilted.
The degree of tilt may vary as the scope is moved from one
location to another. In these cases, adjust this control.
©
F O C U S Control
Adjusts the trace for optimum focus.
(§) A INTENSITY, B INTENSITY Controls
Allows adjustment of intensity for the A sweep and B
sweep respectively.
A INTENSITY:
Adjusts the trace intensity for A sweep and the
display intensity for X-Y operation.
B INTENSITY:
Adjusts the intensity of the B sweep.
<£j) A S T I G Control
Astigmatism adjustment provides optimum spot roundness
when used in conjunction with F O C U S control regardless
intensity control.
@
LEVEL Control
Trigger level adjustment determines point on waveform
where sweep starts.
When COUPLING switch is selected in VIDEO, the trigger
level adjustment has no effect.
•
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