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64
S
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ion 5
DETAILE
D
S
E
TTINGS
ZJ-SD
User’s Manual
Section 5
Entering Threshold Values
Entering Threshold Values
Threshold values are set to determine the range for PASS judgments. Both HIGH and LOW
threshold values are set. There are three judgment outputs: "HIGH", "PASS" and "LOW".
The following table outlines the three methods for setting the threshold values.
Hysteresis (hysteresis width) can also be set to threshold values. Set hysteresis when judgments are
unstable to prevent chattering.
Method
Details
Direct input
The threshold values can be set by directly inputting the numeric values.
Direct input is useful when the criteria is known in advance or when adjusting
threshold values after teaching.
Position teaching
Measurement is actually performed and the measurement results are used to set
threshold values.
Position teaching is useful when charge limit samples are available.
Automatic teaching
Measurement is performed continuously while the keys are held down, and the
minimum and maximum measurements during that period are set as the threshold
values.
Automatic teaching is useful when you want to set threshold values by actually
starting the device and obtaining real measurements.
HIGH
ON
OFF
ON
OFF
ON
OFF
LOW
PASS
HIGH threshold
Measured value
LOW threshold
Output
(ON when the measurement result is
> the HIGH threshold)
(ON when the LOW threshold is
≤
the
measurement result
≤
the HIGH threshold)
(ON when the measurement result is
< the LOW threshold)
operation2.book Page 64 Wednesday, November 29, 2006 2:56 PM