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Sr.
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Panel
Control
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No.
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Description
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No.
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DISPLAY
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|
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1
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Screen
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A
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Phosphor or an LCD screen, usually about 100
mm corner to corner.
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2
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Trace
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B
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Line drawn by
the scope to represent the signal. This line is created by a bright dot
moving across the screen at high speed.
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3
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Graticule
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C, D
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Screen is overlaid with a grid of horizontal
(C) and vertical (D) lines, which divides the screen into squares, called
'major divisions', graticule is usually 10 major divisions wide and 8 tall.
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4
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Axis
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E
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The central
horizontal and vertical lines are usually thicker than the others and are
divided into 'minor divisions', usually five per major division.
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|
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POWER SUPPLY AND CIRCUIT
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5
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Power ON/OFF
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1
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Press power push button switch to turn the
power on and release to turn the power off.
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6
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Power lamp
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2
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This lamp lights when power is turned ON.
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Intensity
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3
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Control the brightness of the display.
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7
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Focus
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4
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Control the sharpness of the display.
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8
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Trace rotation
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5
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Screw driver control to adjust horizontal
tilt of the trace.
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9
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Scale illum
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6
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Used to adjust the scale brightness.
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VERTICAL AXIS SECTION
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10
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Input BNC
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30, 24
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Input terminals to CH1/X, CH2/Y inputs.
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11
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AC-GND-DC
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22, 29
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Selects the coupling method to the vertical
amplifier.
AC: Vertical input is connected through a
capacitor, only AC component is displayed.
GND: Input of vertical amplifier is grounded.
DC: Input signal including DC component is
displayed.
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12
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Volts/Div selector
|
26, 32
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Steps attenuator switch from 5mV/div to
10V/div.
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13
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x5 Mag
|
20, 36
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When pressed, the vertical axis gain is
magnified 5 times, and the maximum sensitivity becomes 1mV/div.
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14
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Position
|
23, 35
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Used to move CH1 or CH2 trace up or down on
the CRT screen.
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15
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Invert
|
21
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When Invert switch is pressed, polarity of
the signal to CH2 is inverted.
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16
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CH1
|
34
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Only the signal applied to CH1 is displayed.
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17
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CH2
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28
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Only the signal applied to CH2 is displayed.
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18
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Dual
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28, 34
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When both CH1 and CH2 buttons are pushed in,
the signals applied to CH1 and CH2 are displayed simultaneously in either
chopped or alternate display.
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19
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ADD
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31
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Displays the algebraic sum of the CH1 and CH2
inputs. Difference is displayed when the CH2 invert button is pushed in.
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HORIZONTAL
AXIS SECTION
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20
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Time/Div Selector
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15
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Selects sweep speed from 0.1us/Div to
0.2us/Div in 20 calibrated steps.
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21
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X-Y
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11
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Displays the CH1 and CH2 input signal as an
X, Y graph. The vertical deflection signal is applied to the CH1 input and
the horizontal deflection signal is applied to the CH2 input.
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22
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Sweep Var
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12
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When tuned completely clockwise (cal) the
sweep is indicated by the Time/Div switch.
When turned completely counter clockwise the
sweep is less than 1/2.5 of the Time/Div setting.
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23
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Horizontal Position
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14
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Used to move the trace in horizontal
direction.
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24
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x5 Mag
|
9
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When pressed, the trace will be magnified by
a factor of 5. The sweep time becomes 1/5 of the value indicated on the
Time/Div switch.
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25
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Alt-Mag
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8
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Displays both the normal trace whose sweep
rate is indicated by the Time/Div switch and the magnified trace x5
simultaneously.
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26
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Trace Separation Control
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13
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Used to position Magnified trace 1.5
divisions or more from the normal trace
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TRIGGERING
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27
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Trigger source selector
|
16
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Selects sweep trigger signal source.
Int: Input signal applied to CH1 or CH2
becomes the trigger signal.
CH2: Input signal applied to CH2 becomes the
trigger signal.
Line: Power line frequency becomes the
trigger signal source.
Ext: External signal applied to TRIG input
becomes the trigger signal.
|
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28
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Ext
|
19
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Input terminal for the external trigger
signal.
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29
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Trig Level
|
17
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Sets the amplitude point on the trigger
waveform that will start the sweep.
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30
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Slope
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10
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Selects the polarity of the slope the trigger
source waveform will start the sweep.
(+) slope is selected when the push button is
pushed out.
(--) slope is selected when the push button
is pushed in.
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31
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Trig Mode
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18
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Auto: Sweep continuously runs in the auto
sweep mode. A trace will be displayed even when the input waveform is not
triggered. A stationary waveform will be displayed when the input waveform is
properly triggered.
Norm: A trace will be displayed only when the
input waveform is present and is properly triggered. There will be no trace
displayed if there is no input signal or if the input signal is not
synchronized. Normal sweep is used when the input signal’s frequency is less
than 25Hz.
TV-H: Effective when trig mode is set to TV,
and is used when the horizontal of the TV signal is to be synchronized.
TV-V: Effective when trig mode is set to TV,
and is used when the vertical of the TV signal is to be synchronized.
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32
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Cal 0.5V
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7
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Outputs a 0.5V P-P 1KHz rectangular wave for
calibrating probes.
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33
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GND
|
27
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This is the grounding terminal.
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34
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COMP. TEST
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40
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Switch to change from oscilloscope to
component tester. For component testing, X-Y switch must be pushed in for X-Y
mode and set both AC-GND-DC switches to GND position.
|
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35
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Component Test In
|
42
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Terminals to connect a component or lead
wires to a component under test.
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