6.Demonstration
(6)
Press the
Trigger Menu
button to display the Trigger
menu.
(7)
Press the
H1
button to display the Trigger Type menu.
(8)
Press the
F1
to choose
Single
as the type.
(9)
Turn the
M
knob to choose
Edge
as the mode.
(10)
Press the
H2
button to display the
Source
menu.
(11)
Press the
F1
button to choose
CH1
as the source.
(12)
Press the
H3
button to display the Coupling menu; press the F2 button to choose
DC
as the Coupling.
(13)
Press the
H4
button to choose
(rising
)
as the Slope.
(14)
Rotate the
TRIG LEVEL
knob and adjust the trigger level to the roughly 50% of
the signal to be measured.
(15)
Check the Trigger State Indicator on the top of the screen, if it is not Ready, push
down the
Run/Stop
button and start acquiring
,
wait for trigger to happen. If a
signal reaches to the set trigger level, one sampling will be made and then
displayed in the screen. By using this approach, a random pulse can be captured
easily. For instance, if we want to find a burst burr of high amplitude, set the
trigger level to a slightly higher value of the average signal level, press the
Run/Stop
button and wait a trigger. Once there is a burr occurring, the instrument
will trigger automatically and record the waveform during the period around the
trigger time. By turning the
HORIZONTAL POSITION
knob in the horizontal
control area in the panel, you can change the horizontal triggering position to
obtain the negative delay, making an easy observation of the waveform before the
burr occurs (see
Figure 6-3
).
Figure 6-3 Capturing a Single Signal
80
