Microscan MS-96 Uživatelský manuál Strana 67

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Chapter 4 Read Cycle
MS-9 Scanner User’s Manual 4-19
Video Settings
“Video” in this context, refers to the distinction of light and dark bars that go into qual-
ifying an object as a symbol. Typically, the default settings will not need to be changed
and if so required, should be done by qualified technicians.
Maximum Element
Video Filter Time
Minimum Symbol Transitions
Usage: Caution: Do not change this parameter unless instructed by a Microscan
representative.
Definition: Maximum Element represents the maximum bar element width that’s
allowed, as measured in micro seconds, before a video reset occurs
(default to white).
Serial Cmd: <K502,maximum element,video filter time,minimum symbol transi-
tions>
Default: 410 (x 4 µS)
Options: 1 to 65535
Usage: Can be useful in improving read rates for certain symbols.
Caution: Do not change this parameter unless instructed by a Microscan
representative.
Definition: Bar and space filter value, in nanoseconds. If a bar or space is less than
the video filter value set, then the bar or space element will be filtered
out.
Serial Cmd: <K502,maximum element,video filter time,minimum symbol transi-
tions>
Default: 12 (x 30.5 nS)
Options: 1 to 65535
Usage: Can be useful in adjusting the threshold for qualification of certain sym-
bols.
Definition: Defines the minimum number of symbol bar transitions at which a sym-
bol is qualified as a symbol.
Serial Cmd: <K502,maximum element,video filter time,minimum symbol transi-
tions>
Default: 12 (x 30.5 nS)
Options: 1 to 65535
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