Setting Measurement Items
74
ZFX-C User’s Manual
Measurement mode
Sets the method for calculating the position of the
edge(s).
The side far from the start point of the measurement
region is the peak, and the side near the start point is the
bottom.
Split size
The inside of the measurement region is divided into
smaller areas to search for the edge(s), and the peak/bot-
tom/average are calculated. This calculated width is then
set.
Edge level
Edges are detected as follows:
1. The density distribution of the entire measurement
region is calculated.
2. The maximum value is taken to 100% from the mini-
mum density value.
3. Places where the density of the edge level changes
are detected as edges.
Noise level
The minimum and maximum density values in the edge detection region are calculated, and it is judged that there
are no edges when the difference between these values is at the noise level or lower. Normally, this setting may be
left it its default value of 20. However, set a higher value when noise causes an edge to be detected by mistake.
(in region)
Maximum density value - minimum density value < noise level
→
Judged as "no edge"
→
Measurement result NG
Maximum density value - minimum density value
≥
Noise level
→
Judged as "edge"
→
Taken to be measurement target
Noise width
When the density distribution reaches or falls below the
edge level again within the range of the noise width from
the initial edge detection position, the detected point is
regarded as noise. Normally, this setting may be left it its
default value of 0. However, set a higher value when
noise causes an edge to be detected by mistake.
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