Microscan EZ Match, User Manual

Page: 289 / 431

EZ Match User’s Manual
11-19
Camera and IP Setup
IP Threshold
Threshold Mode
Threshold Value
Cycle Min
Usage: Fixed Mode works best when decode time must be as short as possible
and the reflectance and illumination of the symbol area is uniform and
unchanging.
Cycle Fixed Mode is useful in applications where decode
time can be slightly longer, and reflectance and illumination of the symbol
area is uniform and unchanging. Otherwise,
Adaptive Mode is the preferred
mode.
Definition: This value switches the image processing threshold mode between the
Adaptive , Fixed , and Cycle Fixed modes.
An adaptive routine sets the light/dark threshold using data acquired from
the current read. A fixed routine applies the same gray scale threshold
value to each and every symbol. A cycle fixed routine loops through a
pre-defined range of values (
Cycle Min to Cycle Max ) by pre-defined
increments ( Cycle Step ).
Serial Cmd: < K512,threshold mode ,threshold value,cycle min,cycle max,cycle step,
adaptive contrast percent >
Default: Adaptive
Options: 0 = Adaptive 1 = Fixed
2 = Cycle Fixed
Usage: A higher value will increase the threshold for distinguishing between light
and dark elements.
Definition: Determines how the imager will distinguish light pixels from dark pixels.
This value is used for
Fixed Mode only. When Adaptive Mode is set,
this value is ignored.
Serial Cmd: < K512, threshold mode, threshold value ,cycle min,cycle max,cycle step,
adaptive contrast percent >
Default: 128
Options: 0 to 255
Definition: Starting value of the cycle mode.
Serial Cmd: < K512, threshold mode,threshold value, cycle min ,cycle max,cycle step,
adaptive contrast percent >
Default: 0
Options: 0 to 255
Important: Cycle Min must be a smaller numerical value than Cycle Max.