Hitachi V-355, Operation Manual

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quency signal (25 Hz or less).
TV(V) This setting is used when observing the entire
vertical picture of television signal.
TV(H) This setting is used when observing the entire
horizontal picture of television signal.
(NOTE)
Both TV-V and TV-H synchronize only when
the synchronizing singal is negative .
(5) Miscellaneous
@
EXT BLANKING INPUT connector
Input terminal for brightness modulation. It is of the DC
coupling. The brightness is reduced with a positive signal
and increases with a negative signal.
@
CAL 0.5V tip
Output terminal of calibration square wave of about
I kHz and 0.5V. It has a tip terminal. It is used to cali­
brate the probe combination.
@
Gr o
un
d
in
g terminal
Earth terminal of the oscilloscope .
5. HOW TO OBTAIN THE DISPLAYS
Before turning ON the POWER switch, insure the power
supply voltage is within the range of I 08- 1 32V for AC
1 20V set, 1 98-242V for AC220V set, and 2 1 6-264V for
AC 240V set.
Insert the plug of the power cord on the rear panel into the
wall outlet and set the controls as follows.
POWER
CD
OFF
INTENSITY
@
Counterclockwise to the full
FOCUS
@
Midrange
AC-GND-OC
@
GND
1 �
POSITION
@
Midrange (the knob is in
the de-
V.MODE
@
pressed)
CH I
Trigger MODE
@
AUTO
Trigger SOURCE
@
INT
INT TRIG
�
CH I
TIME/DIV 25
0.5 ms/div
�POSITION
@)
Midrange
Set all the levers of the switches to the upper side.
After ending all the setting mentioned above, turn ON the
POWER and, 1 5 second later, rotate the INTEN knob clock­
wise . Then the display will appear. If the observation is to be
started immediately , set the FOCUS control at a point where
the display is sharpest.