Hioki LR8450, Instruction Manual

Page: 178 / 310

175
Configuring Alarm Output (ALARM)
Unit Measure Channel Trigger Alarm Calculation System
8.2 Configuring Alarm Output (ALARM)
This section describes how to set the voltage level for the signal that is output when an alarm
condition is satisfied.
For more information about alarms, see “4 Alarm (Alarm Output)” (p. 129).
> >
1 1
1
Under [Alarm output 1] to [Alarm output 8] , select the voltage level you wish to output when
outputting an alarm.
Low

Outputs the alarm at low level (0 V to 0.5 V).
High Outputs the alarm at high level (4.0 V to 5.0 V).
Alarm output terminal specifications
Output type Open-drain output (with 5 V voltage output)
Output voltage High level: 4.0 to 5.0 V; low level: 0 to 0.5 V
Switchable between high and low level output
Output
response time
(Recording interval or data refresh interval, whichever is longer) × 2 + 1 ms + analog
response time*
1
*1: Varies with filter setting (U8554: 5 ms, with 120 Hz low pass filter)
Maximum
switching
capacity
5 to 30 V DC, 200 mA
Output pulse
width
10 ms or greater
8
External Control (EXT
. I/O)