10.2 Functions of the External Input/Output Terminal
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(1) Start/Stop of Time-Series Measurement
Open (High level)→Short (low level): Starts measurement
Short (Low level) →Open (high level): Stops measurement
(2) Data Storage into the Selected Medium
Saves measurement data manually on the PC card or in the inter-
nal memory, whichever is selected as the medium for saving data
Short (low level): Manual storage
Input-voltage range: High level: 2.5 V to 5.0 V
Low level: 0 V to 1.0 V
Maximum input voltage: -0.5 to 5.5 V
Start
Stop
5 V (open)
0 V (short)
600 ms or more
There is lag of approximately 600 ms from when the measure-
ment start signal is input until the 3169-20/21 starts measure-
ment.
Data storage begins during this period.
5 V (open)
0 V (short)
100 ms or more
• This function is disabled during time-series measurement.
• The function does not operate properly if the pulse is less than
100 ms.
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