5
SETTING OF FUNCTIONS
54
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Chapter
5
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How to specify the hold detection section(Peak, Valley, P-P, Average)
All section
By this method, the hold detection section is externally specified by the T/H signal.
Detection starts with the T/H signal ON to perform each hold operation.
According to the ON/OFF state of the T/H signal, detection and tracking are repeated. There is no
fixed hold section.
(Example) All section 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.)
Note: During the undetermined section, the
judging output varies with fluctuations in the
input waveform. However, the H/E output
remains on during the undetermined section.
Read the judging result when the indicated
value becomes stable (immediately before the
T/H signal rises).
External signal
By this method, the hold detection section is externally specified by the SECTION signal to
maintain the hold value until the reset signal is turned on.The hold is released by turning on the T/H
signal as a reset signal.The next detection is started when the SECTION signal is turned on again
even if the T/H signal is not turned on.
The H/E output signal is on between the instant when the SECTION signal is turned off and the
instant when the T/H signal is turned on.
(Example) Externally specified section peak hold
t1: A delay time between the instant
when the SECTION signal is inputted
and the instant when the value to be
held is detected
1.0ms (max.)
t2: A delay time between the instant
when the SECTION signal is released
and the instant when the value to be
held is determined
1.08ms (max.)
t3: A minimum reset signal width
required for releasing the hold
1.0ms (min.)
Indicated Value
t2
t3
Sensor Input Value
t
+
T/H
H/E
t1
t2
t1
t3
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
HI-LO Limit
Judging Output
Undetermind
section (Note)
Undetermind
section (Note)
*The status display changes depending on the hold mode.
Detection
Hold Section
Detection
Hold Section
Indicated Value
t3
Sensor Input Value
Detection
t
+
T/H
H/E
Hold Section
t2
t1
Decide
SECTION
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
Blink
ON
OFF
ON
OFF
OFF
OFF
HOLD
Button
HOLD
Status Display
PEAK*
Status Display
*The status display changes depending on the hold mode.
HI-LO Limit
Judging Output
Содержание F377A
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