Hioki MR8827, Инструкция по эксплуатации

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Pre-trigger Settings
9.8 Pre-trigger Settings
This applies to the Memory and FFT functions only.
By setting a portion (number of divisions or percentage) of the recording length to occur before triggering,
the waveform can be 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.
T
Pre-Trigger Setting
Amount
Recording
Length
T
Pre-Trigger Setting
Amount
Recording Before Triggering Recording for a Specified Duration
After Triggering
Recording
Length
• When all trigger sources (analog, timer trigger, etc.) are disabled (Off), pre-trigger settings are
ignored.
• Pre-triggers cannot be set by div with the FFT function.
9.8.1 Set the Trigger Start Point (Pre-trigger)
Set the position of the trigger point relative to the specified recording length.
There are two setting methods. (Setting by percent and setting by div)
Procedure
Press the DISP key to open the Waveform screen.
1
Select the unit to use when setting the pre-trigger.
Move the cursor to [Pre-trigger].
% Set the pre-trigger in %.
(Default setting)
div Set the pre-trigger in number of divs. For external
sampling, set by number of samples.
2
Enter the numerical value.
(When
[%] is selected)
With the recording start point as 0% and the recording end
point as 100%, set the % for the trigger point.
-95%, 100%, 95%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%,
10%, 5%, 2%, 0%
(When [div] is selected)
With the recording start point as 0 div and the recording end
point as the set recording length, set the number of div for the
trigger point.
-Recording length (div) to +Recording length (div)
9
Trigger Settings