Hitachi V-209, Руководство по эксплуатации

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AL
T
Signals applied respectively to CHI and CH2
appear on the screen alternatively at each sweep.
This setting is used when the sweep time is short in
2-channel observation.
CHOP At this setting, the input signals applied respec­
tively to CHI and CH2 are switched at about
250 kHz independent of the sweep and at the
same time appear on the screen. This setting is
used when the sweep time is long
in 2-channel
observation.
ADD The algebraic sum of the input signals applied
respectively to CHI and CH2 appears on the
screen ..
@
CH2 INV button
12
Used to inverse the polarity of the input signal applied
to CH2. Inversion occurs in a state where the knob
of the pushbutton is depressed ( _o._ ) and restored to
normal when the knob is in protruded state (
_0_
).
This switch is conveniently used in the comparison of
two waveforms having different polarity or in the
observation of the waveform of the difference signal
!CHI l - !CH2 I between CHI and CH2 using ADD.
(3) Controls of horizontal deflection system
@
TIME/DIY �lect switch
Sweep time ranges are 18 steps from 0.5 psjdiv to 0.2s/
div.
X-Y This position is used when using the instrument as
an X- Y oscillsocope.
In this position, the X (horizontal) signal is con­
nected to the input of CH 1 ;
·
the Y (vertical)
signal is applied to the input of CH2 and has a
deflection range from less than one millivolt to
5 volts/div at a reduced band-width of200 kHz.
@
SWP VARiable control
Works as CAL and the sweep time is calibrated to the
value indicated by
TIME/DIY.
TIM E/DIV of sweep can be varied continuously when
shaft is out of CAL position.
Then the control is rotated in the direction of arrow to
the full, the CAL state is produced and the sweep time
is calibrated to the value indicated by
TIME/DIY.
Counterclockwise rotation to the full delays the sweep
by 2.5 times or more.
@
FINE PULL xlO
MAG
:::POSITION control
Used to move the bright line in horizontal directions.