Hitachi V-355, Operation Manual

Page: 12 / 54

CD
POWER
switch
The POWER is set on at the pushed-in position, and
set off at the released position
@
POWE R lamp
This lamp goes on in red when the power supply is in
ON state.
Q)
FOCUS control
After obtaining an appropriate brightness by operating
INTENSITY, adjust FOCUS until the display is clearest.
Although the focus is also corrected automatically when
INTEN is rotated , the focus is sometimes slightly shifted.
@
SCAL
ILLUM control
Controls graticule illumination. Useful to illuminate the
graticule when viewing in a dark area, photographing.
®
TRACE ROTATION control
Used to aline the trace of CRT with the horizontal
graticule .
@
INTENSITY
control
This knob adjusts the brightness. Brightness is increased
by rotating INTENSITY clockwise.
(j)
VOLTAGE SELECTOR
Used to select the power sources.
@
AC inlet
This is inlet for detachable AC power cord .
(2) Controls of vertical deflection system
®
CH
I
INPUT connector
BNC connector for vertical axis input .
The signal input to this terminal becomes the X-axis
[Y-axis] signal when the instrument is used as an
X-Y oscilloscope.
@
CH2 INPUT connector (V-212 only)
The same as CH I , but when the instrument is used as an
X-Y oscilloscope , the signal input to this terminal
becomes the Y-axis signal.
@
@
Input coupling switches ( A C
-
GND
-
OC)
The switches used to select the coupling system between
the input signal and vertical axis amplifier.
AC At this setting the signal is connected through a
capacitor. The DC component of the input
signal is cut off and only the AC component is dis­
played.
9