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4.OPERATION METHOD
4.1 Introduction of Front Panel
CRT:.
POWER...............................(7)
Main power switch of the instrument.When this switch is turned on,the LED (6)is also turned on.
INT EN.................................(2)
Controls the brightness of the spot or trace.
FOCUS................................(3)
For focusing the trace to the sharpest image.
TRACE ROTATION..............(4)
Semi-fixed potentiometer for aligning the horizontal trace in parallel with graticule lines.
FILTER................................(36)
Filter for ease of waveform viewing.
CHl(X)input.......................... (9)
Vertical input terminal of CH1.When in X-Y operation,X-axis input term inal.
CH2(Y)input.......................... (20)
Vertical input terminal of CH2.When in X-Y operation,Y-axis input terminal.
AC-GND-DC..........................(10)(18)
Switch for selecti ng connection mode betwee n input signal and vertical amplifier.
AC:AC coupling
GND:Vertica l amplifier input is grounded and input terminals are disconnected.
DC:DC coup ling
VOLTS/div.............................(8)(21)
Select the vertical axis sensitivity, from 5mV/div to 20V/div in 12 ranges.
Vertical Axis:
VARIABLE.......................(13)(17)
Fine ad justment of sensitivity, with a factor of>1/2.5 of the indicated value.When in the CAL position, sensitivity is
calibrated to indicated value.
POSITION.................(11)(19)
Vertical positioning control of trace or spot. When this knob is pulled out(x5 MAG state), the amplifier sensitivity is
multiplied by 5.
VERT MODE.....................(14)
Select operation modes of CHl and CH2 amplifiers.
CH1:The oscilloscope operates as a single-channel instrument with CH1 alone
CH2:The oscilloscope operates as a single-channel instrument with CH2 alone.
DUAL:The oscilloscope operates as a dual-channel instrument both CH1 and CH2.
ADD:The oscilloscope displays the algebraic sum (CHl+CH2)or difference(CH1 -CH2)of the two signals.
The pushed in state of CH2 INV(16)button is for the difference(CHl-CH2).
ALT/CHOR...........................(12)
When this switch is released in the dual-trace mode, the channel l and channel 2 inputs are alternately displayed (normally
used at faster sweep speeds).
When this switch is engaged m the dual-trace mode,the channel 1 and channel 2 inputs are chopped and displayed
simultaneously (normally used at slower sweep speeds).
CH2 INV................................ (16)
Inverts the CH2 input signal when the CH2 INV switch mode is pushed in The channel 2 input signal in ADD mode and
the channel 2 trigger signal pick off are also inverted.
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