Hitachi V-209, Operation Manual

Page: 23 / 47

MODE Switch of Vertical Axis
TRIG OURCE
(2)
When
observing two wavefonns
CH2
CH2
Observation of two wavefom1S can be made easily by
setting the MODE switch of vertical axis to ALT or CHOP.
When observing two wavefonns of high repetition frequen­
cies, set the MODE switch to ALT and, in the case of low
frequencies, set it to CHOP.
Measurement of the phase difference is performed after
effecting synchronization with leading phase signal.
(3) When
observing
wavefonn with
X- Y
Set the MODE switch of vertical defection system to CH2
(X-
Y)
and TIM E/DIV switch to X- Y. Then the instrument
works as an X- Y oscilloscope.
Each input is applied to the instrument as follows.
X-axis signal (horizontal axis signal)
Y
-axis signal (vertical axi� signal)
CHI INPUT
CH2 INPUT
In this case.leave the horizontal axis magnification switch
(PULL-MAG
x
10 inner shaft knob) at depressed position.
7. METHOD FOR CONNECTING SIGNALS
The first step of measurement is to introduce the signal
desired to measure to the oscilloscope properly. Do it with
utmost care.
(I) When using a probe
Use the attached probe, AT-I 0 AK I .5, when measuring a
high frequency wave with high accuracy.
It should be noted, however, that since the input signal is
attenuated by this probe to 1/10 before it is input to the
oscilloscope, the use of the probe is disadvantageous for
low signals, and that at the same time, the measuring range
is extended by that amount for high signals.
<CAUTIONS>
o Do not apply a signal which exceeds 250V
(DC+
peak
AC at
I
kHz).
o
Bring the grounding point of the earth lead wire of the
probe close to the point to be measured when measur­
ing a rapid rising signal or a high frequency signal. Long
earth lead wire may cause wavefonn distortions such as
ringing and overshoot.
19