189
────────────────────────────────────────────────────
8.6 Using the Analog Trigger Function
────────────────────────────────────────────────────
Signal cycl
Triggering position of the period trigger
The system monitors the period of the signal that crosses the set reference
voltage. When the monitored period deviates from the set range, triggering
occurs. The trigger position is determined by the set period range and the
measurement signal period.
(1) Signal with a period to be measured that is smaller than the lower limit of the
period trigger (trigger slope:
):
When the signal crosses the reference voltage at the set trigger slope before
the lower limit of the set period range appears on the screen, the intersection
is always defined as the triggering position.
(2) Signal with a period to be measured that is larger than the upper limit of the
period trigger (trigger slope:
):
When the upper limit of the set period range appears on the screen before the
signal crosses the reference voltage at the set trigger slope, the upper limit is
defined as the triggering position. The triggering position is determined by the
position of the upper limit in the period range, as shown in the figure above.