13.1 MR8880-20 Specifications
234
Trigger types
(external trigger)
Rising and falling selectable
• Rising
A trigger is applied when rise from low (0 to 0.8 V) to
high (2.5 to 5 V).
• Falling
A trigger is applied when fall from high (2.5 to 5 V) to
low (0 to 0.8 V), or terminal short.
Input voltage range: 0 V to 10 V DC
External trigger filter: On/Off selectable
Response pulse width:
H period 1 ms or greater, L period 2 µs or greater (when external
trigger filter Off)
H period 2.5 ms or greater, L period 2.5 ms or greater (when exter-
nal trigger filter On)
Trigger filter
• High-speed function: Set by number of samples
(Off, 10, 20, 50, 100, 200, 500, 1000)
• Real time function: On/Off selectable(*)
(*) Operation with the Real-time Function differs depending on
whether envelope mode is On/Off.
(Envelope mode Off)
The filter differs depending on setting of recording interval.
Recording interval
100 s to 10 ms: Filter fixed to 10 ms
20 ms to 1 min: Filter for 2 consecutive data portions
(Envelope mode On)
The filter is fixed to 10 ms regardless of the recording interval.
Trigger level
resolution
0.1% f.s. (f.s. = 10div)
Pre-trigger
• [Highspeed]: Set percentage in relation to entire recording length
(0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 100%)
• [Realtime]: Set by hour, minute, and second
(Settable up to same value as recording length
(*)
)
(*) When continuous recording is [On], settable up to the follow-
ing corresponding value.
whether envelope mode is [Off]: upto 1,000,000 data
whether envelope mode is [On]: upto 500,000 data
Trigger output
Open-drain output (with 5 V output, Active Low)
Output voltage level HIGH: 4.0 to 5.0 V, Low: 0 to 0.5 V
Output pulse width: Level/ Pulse selectable
• Level: Sampling period x (number of data since trigger –1) or
longer (2 µs or longer)
• Pulse: 2 ms±10%
Trigger input and
output terminals
Terminal block
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