How To Obtain The Displays - Hitachi V-355 Operation Manual

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
Input terminal for brightness modulation. It is of the DC
coupling. The brightness is reduced with a positive signal
and incre ases 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.
un
@
in
Gr o d g terminal
Earth terminal of the oscilloscope .
14
connector
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 3 2V for AC
1 20V set, 1 98-2 42V for AC2 20V 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.
CD
OFF
POWER
@
Counterclockwise to the full
INTENSITY
@
Midrange
FOCUS
@
GND
AC-GND-OC
1 � @
Midrange
POSITION
pressed)
@
CH I
V.MODE
@
AUTO
Trigg e r MODE
@
INT
Trigg e r SOURCE
�
CH I
INT TRIG
0.5 ms/div
TIME/DIV 25
@)
Midrange
�POSITION
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 ob servation is to be
started immediately , set the FOCUS control at a point where
the display is sharpest.
(the knob is in
the de-