Hioki LR8431, Instruction Manual, Page: 82 / 204

4.2 Alarm Output
74
1
For the [Channel] , select a channel for which you
want to set alarm criteria.
2
Select
[Alarm on.]
to enable alarm criteria settings.
3
Select the alarm criteria type from the
[Cond]
setting options.
Setting options:(

default setting)
Alarm criteria settings are not available unless a check
mark [
] is displayed next to the channel number.
4
Set the alarm criteria.
If you have selected
[Level]
.
Setting options:
If you have selected [Window] .
Setting options:
Off* Disable alarms for this channel.
Level Trigger an alarm when the input reaches a
specified level.
Window Trigger an alarm when the input transitions
through upper and lower limits (window).

Alarm output occurs when the input signal rises
above the specified level threshold.

Alarm output occurs when the input signal falls be-
low the specified level threshold.
In Alarm output occurs when the input signal enters
the range defined by the thresholds.
Out Alarm output occurs when the input signal exits
the range defined by the thresholds.
1
Setting Alarm Criteria for Each Channel
ALM appears when no
channel output is checked
(
). In this case, select
[Alarm on.] to enable
alarm output settings, and
then set alarm criteria.
Select how you want to combine alarm output crite-
ria from the
[Alarm]
setting options.
Setting options:(

default setting)
OR* Alarm output occurs when the alarm criteria specified
for any alarm-enabled channel are satisfied.
AND Alarm output occurs only when the alarm criteria for
every alarm-enabled channel are satisfied.
Selecting Combined Alarm Output Criteria
Select the [Trig & Alm] Screen.
If set to [Off], change it to
[On].