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@ VOLTS/DIV select switches
A step attenuator which selects vertical deflection fac
tor. Set it to an easily observable range corresponding to
the amplitude of the input signal.
Multiply the reading by 10 when the 10:1 probe is used
in combination with the instrument.
@@VAR
controls
PULL x5 GAIN
Fine tuning device used to vary the vertical deflection
sensitivity continuously. Attenuation of less than 1/2.5
is obtained when this device is rotated in the reverse
direction of the arrow to the full.
This control is used when comparing waveforms or when
measuring the rise time of a square wave in 2-channel
observation. Normally this control is left rotated in the
direction of the arrow to the full. When the knob is at
PUT T, position (pulled up state) the gain of the vertical
axis is magnified 5 times and the maximum sensitivity
becomes ImV/DIV.
(l^ POSITION controls
This knob is used to adjust the position of the vertical
axis.
The display rises with a clockwise rotation of this knob
and falls with a counterclockwise rotation.
(© POSITION
control (V-212 only)
PULL INVERT
The same as CHI, but when the knob is at PULL posi
tion (pulled up state), the polarity of the input signal
applied to CH2 will be inverted.
This control is conveniently used in the comparison of
two waveforms having different polarity or in the obser
vation of the waveform of the difference between signals
of CHI and CH2 using ADD facility.
(U) MODE select switch (V-212 only)
This switch is used to select the operation mode of the
vertical deflection system.
CHI Only the signal that has been applied to CHI
appears on the screen.
CH2 Only the signal that has been applied to CH2 ap
pears on the screen.
ALT Signals applied respectively to CHI and CH2
appears 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 to CHI
and CH2 are switched at about 250 kHz indepen
dent 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.
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