5.5 Setting the Trigger Function
109
5
Chapter 5 Setting Measurement Conditions
If the pre-trigger is set, waveforms are recorded not just after a trigger but both
before and after a trigger.
1. Open the trigger settings page.
2. Set the trigger function to ON.
3. Set the pre-trigger. Enter the time to apply the trigger.
You can use the [
← → ] left and right arrow keys on the keyboard to move to an
input item, and the [
↑ ↓ ] up and down arrow keys to increase and decrease the
value.
5.5.2 Pre-trigger
T
Pre-Trigger Setting
Amount
Recording Length
Recording Before Triggering
• The pre-trigger function is only enabled when you perform standalone mea-
surement. The setting is ignored when you use Logger Utility to perform com-
puter based measurement.
• The pre-trigger cannot be used when the function is set to external sampling.
• The settable range for the pre-trigger varies depending on the recording inter-
val that is set.
Possible setting range: 0 to 100,000 x Recording interval
• If a pre-trigger is set, the status becomes
[Waiting for Pre-trigger] and a trigger
cannot be accepted during the period of time from the start of measurement to
the time set for the pre-trigger.
[Waiting for Trigger] is displayed until the instru-
ment enters the trigger accept status and a trigger is applied.
• To record the waveform generated after trigger, set the recording duration
longer than pretrigger.
See "Relationship between pretrigger and recording duration" (p. 110)
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