Microscan MS-4 Uživatelský manuál stáhnout pdf (Strana 260)

10-20 MS-4 Imager User’s Manual

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>

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>

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>

Default: 0

Options: 0 to 255

Important: Cycle Min must be a smaller numerical value than Cycle Max.

1 2 ... 255 256 257 258 259 260 261 262 263 264 265 ... 389 390

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Microscan MS-4 Uživatelský manuál Strana 260