Hioki 8860-50, Instruction Manual

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6.5 Pre-Trigger Settings
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This applies to the Memory function and FFT function only.
What is pre-triggering?
By setting a portion (number of divisions or percentage) of the recording length
to occur before triggering, the waveform is recorded before as well as after the
trigger point.
You can also set the duration of a waveform to be recorded after a trigger point.
Set the position of the trigger point relative to the specified recording length. Two
setting methods are available:
• Setting by Percentage (%) [% Setting]
Treating the recording start point as 0% and the recording end point as 100%,
set the trigger point position as a percentage of the recording length.
• Setting by Recording Length (Divisions) [DIV Setting]
Specify as the number of divisions of recording length relative to the trigger
point.
With either method, you can specify a negative value to start recording only after
the specified time has elapsed following a trigger occurrence.
6.5 Pre-Trigger Settings
T
Pre-Trigger Setting
Amount Recording Length
T
Recording Before Triggering
Recording for a Specified Duration
After Triggering
Pre-Trigger Setting
Amount Recording Length
When all trigger sources (analog, timer trigger, etc.) are disabled (Off), pre-trig-
ger settings are ignored.
6.5.1 Setting the Trigger Start Point (Pre-Trigger)