VOLTCRAFT 632 FG, Руководство пользователя

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9
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4-1 Front Panel
CRT :
(6) POWER
Main power switch of the instrument. Turn on the switch to light the LED (5).
(2).INTEN
Control the brightness of the spot or trace.
(3) FOCUS
Focus the trace to the sharpest image.
(4) TRACE ROTATION
Semi-fix potentiometer for aligning the horizontal trace in parallel with graticule lines.
(33)FILTER
The filter is easy for waveform viewing.
Vertical Axis:
(8) CH1 (X) input
The v
ertical input terminal of CH1 is X-axis in X-Y operation,
(20)CH 2 (Y) input
The vertical input terminal of CH2 is Y-axis in X-Y operation,
(10) &(18)AC-GND-DC
Select connection mode between input signal and vertical amplifier.
AC AC
coupling
GND
Vertical amplifier input is grounded and input terminals are disconnected.
DC DC
coupling
(7) & (22)VOLTS/DIV
Select the vertical axis sensitivity from 5mV/DIV to 5V/DIV with 10 ranges totally.
(9) & (21)VARIABLE
Fine adjustment of sensitivity with a factor of
≥
1/2.5 of the indicated value. The sensitivity is calibrated to
specific value in the CAL position. When this knob is pulled out (x5 MAG state), it will multiply 5 by the
amplifier sensitivity.
(13) & (17)CH1 & CH2 DC BAL
.
The knobs are used for adjusting the attenuator balance. See page 20 DC BAL adjustments for details.
(11)&(19)
56
POSITION
Vertical positioning control of trace or spot.
(14)VERT MODE
:
Select operation modes of CH 1 and CH 2 amplifiers.
CH 1
Operate the oscilloscope as a single-channel instrument by selecting CH1 alone.
CH 2 Operate the oscilloscope as a single-channel instrument by selecting CH2 alone.
DUAL Operate the oscilloscope as a dual-channel instrument by selecting CH1 and CH2.
ADD The oscilloscope displays the algebraic sum (CH1 + CH2) or subtraction (CH1 - CH2) of the two
signals (the subtraction function effects only when push in CH2 INV(16) button).
(12)ALT/CHOP
When this switch is released in the dual-trace mode, the CH1 and CH2 inputs are alternately displayed (normally
used at faster sweep speeds).
When this switch is depressed in the dual-trace mode, the CH1 and CH2 inputs are chopped and displayed
simultaneously. (normally used at slower sweep speeds)
.
(16)CH2 INV
When press CH2 INV button, it will inverts the CH2 input signal in CH2 and in ADD MODE, the CH2 trigger
signal pickoff is also inverted.
(23)SOURCE
Select the internal triggering source signal, and the EXT TRIG IN input signal.
CH 1
Press key DUAL or ADD of VERT MODE (14), select CH1 to get internal triggering source signal
CH 2
Press key DUAL or ADD of VERT MODE (14), select CH2 to get internal triggering source signal
(27)TRIG.ALT
Set VERT MODE switch (14) in DUAL or ADD key, select the SOURCE switch (23) by pressing CH1 or CH2,
then press TRIG.ALT switch(27), the internal triggering source signal will display alternately from CH1 and
CH2.
LINE
Display the triggering signal from AC power line frequency signal.
EXT Obtain the external triggering source signal by applying external signal to EXT TRIG IN input
terminal (24).
(26)SLOPE
Triggering slope button.
“+”
Triggering occurs when the trigger signal crosses the trigger level by positive-going course.
“- ” Triggering occurs when the trigger signal crosses the trigger level by negative-going course