FUTEK IPM600 (D610) Digital Display - Manual (Page 69)

7.HOLD FUNCTIONS
58
7-5-3. Valley Hold
The maximum value (valley) in the negative direction of the specified period is held.
The period is specified by the setting of “all period”, “external signal”, “time”, or “time
with trigger”.
(Example) All Period Valley 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 Hold Period
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
HOLD
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