Hioki 8860-50, Instruction Manual

Page: 153 / 490

6.5 Pre-Trigger Settings
141
6
Chapte
r 6
T
rigger Setting
s
Description
About pre-triggering and the recording period (recording length)
Trigger events during the specified pre-trigger recording period are ignored.
To enable recognition of such triggers, set Trigger Priority to
[On] .
See "6.5.2 Setting Trigger Acceptance (Trigger Priority)" (p. 143)
Difference between [Pre-Trig Wait] and [Trigger Wait]
When measurement is started, the specified pre-trigger length is recorded. This
period is indicated as the
[Pre-Trig Wait] .
After the specified pre-trigger length has been recorded, the period indicated as
[Trigger Wait] continues until a trigger occurs.
See "Measurement and Internal Operations" (p. 77)
1
2
Pre-Trigger Settings
To open the screen: Press the
SET
key

Select with the
SUB MENU
keys

Trigger Settings screen
See Screen Layout (p. 35), To set from the Waveform screen (p. 167)
Operating Key Procedure
1
Select the setting method (% or div) for pre-triggering.
CURSOR
Move the cursor to the [Pre-Trigger] item.
F1 to F8 Select either choice.
2
Specify the numerical value.
CURSOR Move the cursor to the [% Setting] or [DIV Set-
ting] item.
F1 to F8 Enter the numerical value.
Setting Range:
% Setting
from –100 to 100%
DIV Setting from –(recording length) to (record-
ing length) divisions
%
Set as a percentage. (default setting)
DIV
Set as a number of divisions.
When using external sampling, set as a
number of samples.
Pre- and post-trigger recording times are
displayed in accordance with the setting
95% 95% of the recording length is
recorded before the trigger
point
50% 50% of the recording length is
recorded before and 50% after
the trigger point
-95% 95% of the recording length is
recorded after the trigger point
T
Pre-Trigger setting examples Trigger Point