Hioki MR8880-20, Instruction Manual

Page: 137 / 300

4.9 Recording Using Specific Conditions (Trigger Function)
127
Chapter 4
Set
ting t
h
e Meas
urement
Condit
ions
(
W
hen you want t
o
c
u
st
omize t
h
e
sett
ings)
4
You can apply a trigger by inputting a signal from an external source. This also
enables the synchronous operation of multiple instruments by parallel triggering (p.
226). When using an external trigger, be sure to set
[External Trig In] to [Trigger] in
the [System] screen.
Applying Trigger with External Input Signal (External Trigger)
1
2
Apply
Set [External Trig In] to [Trigger]
(default setting)
Connect the external control terminals of the instrument
and the external signal input destination with electrical
wires.
See: "Chapter 12 External Control" (p. 217)
In the following steps, use the same operation to config-
ure settings.
Select the [System] screen.
3
4
Select the application condition of the exter-
nal input signal in
[Ext Trig] .
The options that can be set differ depending on the
trigger application condition (AND/OR). You can set
different application conditions for each of the start
condition and stop condition.
Setting options (
∗
. default setting)
[OR] Off* An external trigger is not used.
↑
A trigger is applied when the external input signal changes from low to high.
↓
A trigger is applied when the external input signal changes from high to low.
[AND]
Off* An external trigger is not used.
HIGH A trigger is applied when the external input signal is high level.
LOW A trigger is applied when the external input signal is low level.
5
Set [Filter] .
If [Filter] is set to On, a trigger is not applied if the fixed
period trigger condition is not met.
This is effective for preventing incorrect operation
caused by noise.
Setting options (
∗
. default setting)
Off
∗
, On
Select the [Trig] screen.