Unipulse F371, Руководство по эксплуатации

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7.HOLD FUNCTIONS
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7-6. How to Specify the Hold Detection Period
7-6-1. All Period
By this method, the hold detection period is externally specified by the T/H signal.
Detection starts with the T/H signal ON to perform each hold operation.
Detection ends with the T/H signal OFF to reset the hold.
(Example) All Period Peak Hold
t1 ： A delay time between the instant when the T/H signal is inputted and the instant
when the indicated value is held
1.0ms (max.)
t2 ： A delay time between the instant when the T/H signal is released and the instant
when the indicated value returns to tracking
1.0ms (max.)
t3 ： A minimum reset signal width required for releasing the hold
1.0ms (min.)
Indicated Value
t2
t3
Sensor Input Value
Detection
t
＋
T/H
HI-LO Limit
Judging Output
H/E
Detection
t1 t2 t1
t3
Note: During the undetermined period, the judging output varies with
fluctuations in the input waveform. However, the H/E output
remains on during the undetermined period. Read the judging
result when the indicated value becomes stable (immediately
before the T/H signal rises).
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Status Display
PEAK
Status Display
ON
Blink Blink
OFF ON
OFF
OFF
OFF
OFF
OFF
HOLD
Button
Undetermind
Period
（
Note
）
Undetermind
Period
（
Note
）
Hold Period
Hold Period
HOLD