Hioki LR8400-20, Instruction Manual

Page: 119 / 300

5.1 Triggering Measurement Start and Stop
107
3
5
Chapter 5 S
p
ecif
y
ing Crite
ria
for M
easurement
s
Enable the trigger function (set to On), select recording start/stop timing, and set trigger
criteria.
Make these settings on the
[Trig & Alm] screen.
See:
"Key Setting Procedure" (p .103)
Selecting Triggering Criteria (Trigger Source)
If trigger settings have been made on the [CH] screen, skip steps 1 and
2. (The settings in steps 1 and 2 are interlinked with those on the [CH]
screen.)
1
Select the [CH] or [Trig&Alm] Screen.
2
Enable triggering [On] .
3
Select measurement start/stop timing.
(Start and stop triggers can be set for each channel
independently.)
4
Select trigger combining logic.
Setting options: (
∗
: default setting)
Start
∗
Start recording according to Start Trigger cri-
teria.
Stop Stop recording according to Stop Trigger cri-
teria.
Start/Stop Start and stop recording according to the
Start and Stop Trigger criteria, respectively.
Setting options: (
∗
: default setting)
OR
∗
Triggering occurs when any one of the speci-
fied trigger source criteria is met. (includes ex-
ternal trigger signal)
AND Triggering occurs only when all of the specified
trigger source criteria are met. (includes exter-
nal trigger signal)
3 4
See:
"Using External
Triggering" (p .108)
[AND]
One waveform has
crossed above 0 V as the
other crosses on the ups-
lope
[OR]
Either waveform crosses 0V
on the upslope
Start Measurement
Trigger: Level
Level: 0 V
Slope:
↑
Triggering Criteria
To apply a trigger when the upslope (
↑
) of the waveform crosses zero volts:
Start Measurement T T T T
When [AND] is selected
No triggering occurs initially if trigger
criteria are already met when mea-
surement starts.
Before triggering can occur, trigger cri-
teria must first become invalid once.