11.1 LR8400-20, LR8401-20, LR8402-20 Memory HiLogger Specifications
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Trigger Function
Trigger method Digital comparison
Trigger modes Single or continuous
Trigger timing Start, stop, start&stop
Trigger source
Analog input 30 channels (U1-1 to U2-15), or up to 60 channels (U1-1 to U4-15) with
a
dditional input units
Integrated pulse input 8 channels (P1-P8)
Digital input 8 channels (L1-L8)
External trigger Trigger on external input signal risin
g or falling edge (selectable).
Timer trigger Set year, month, day, hour, minute, and second
Trigger criteria • AND or OR of each trigger source
• Trigger criteria can be set for each channel.
• Free-running when all are Off
Trigger types
analog* and pulse
Level Trigger Triggering occurs when the signal rises (or falls) through a specified value.
Window Trigger
Triggering occurs when the input signal level enters or exits the amplitude
window defined by upper/lower thresholds.
Trigger types digital
Pattern Mask Trigger Trigger when signals match the pattern mask (1, 0, and X)
(where X is "ignore")
Trigger level resolution (Analog) 0.1%f.s. (f.s. = 10 divisions)
(Pulse) Integration 1c, revolution 1/n (where n = pulses/rev)
Pre-trigger Time span setting (any span).
Settable with real-time saving.
Trigger output Open-collector output (with 5 V output,
Active Low)
Pulse Width: at least 10 ms
Trigger output termi-
nal
M3 screw type terminal
Rising : triggers upon transition from 0 to 1.0 V (LOW)
to 2.5 to 5.0 V (HIGH).
Falling : triggers upon transition from 2.5 to 5.0 V (HIGH)
to 0 to 1.0 V (LOW), or when the external trigger
terminal is shorted to a GND terminal.
Trigger input voltage
range
: 0 to 10 VDC
External trigger filter : On/Off
Minimum response
pulse width
: H period 2.5 ms or greater, L period 2.5 ms or
greater
Trigger input termi-
nals
: M3 screw type terminal
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