Iwatsu DS-8814, Operation Manual

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19
Trig Type
Slope
Source
Coupling
Hold off
Selects “Edge”, “EVENT” or “TV” Type in the TRIG menu.
(For EVENT and TV, see Section 2.)
The trigger signal is generated at the cross point of the input signal
and the trigger level in the edge trigger as shown in the figure on page
18.
Selects the rising slope (Pos) or the falling slope (Neg) of the input
signal to generate a trigger signal.
Selects the trigger signal source from CH1, CH2, CH3, CH4, or LINE.
LINE generates a trigger signal the same as the power line frequency.
It is used for observing a signal synchronizing with the power supply
frequency.
Selects coupling of a trigger signal.
AC coupling is useful for observing a signal on a DC voltage.
HF-R rejects high frequency signal components such as noise to ensure
stable triggering.
AC Blocks the DC component of a trigger signal.
DC Passes all frequency components of a trigger signal.
HF-R Low pass filter coupling. Rejects the frequency
components above 10 kHz.
LF-R High pass filter coupling. Rejects the frequency
components below 10 kHz.
Specifies the trigger ignoring the period from the former trigger time.
Setting range: 200 ns to 2 s and OFF
Use of EVENT trigger allows waveform to be acquired when a specific pattern
is established by specifying trigger generation count and synchronization.
Use of TV trigger allows stable observation of TV signal.
EVENT trigger and TV trigger