Metrologic Instruments Hand-Held Scanner - Manual (Page 12)

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For these kinds of parameters, the label of the parameter to be configured
must be read first. Then the labels comprising the numeric value or
character string are read. Finally, the “Validate” label must be read to
complete the setting. The scanner will respond with two beeps when the
“Validate” label is read.
7.4.1 Numeric Parameters
The configuration procedures for numeric parameters are shown below.
Parameter Label
Decimal Label
"Validate" Label
For example, to configure the Inter-Character Delay to be 15 ms, the “Inter-
Character Delay” label is first read, and then the decimal digit labels “1” and
“5”, and finally, the “Validate” label to complete the setting.
7.4.2 Character String Parameters
Each character programmed for the character string parameters is
represented by two hexadecimal digits. The two hexadecimal digits usually
comprise a value which is the ASCII code equivalence of the character
being programmed.
Beside the two hexadecimal digits, there is an optional key type/status can
also be specified for each character of the string parameters. This optional
key type/status can only be specified for some particular parameters when
keyboard interface is used. These parameters are: Prefix Code, Postfix
Code, Code ID, and Additional Fields of Editing Formats.
The available key type/status settings can be selected will be described
briefly. The configuration procedures for character string parameters are
shown below.
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Parameter Label
Key Type / Status Label
Two Hexadecimal Labels
"Validate" Label
For example, to configure the Prefix Code to be “AB”, the “Prefix Code”
label is first read, and then the hexadecimal digit labels “4”, “1”, “4”, and “2”
are read, and finally, the “Validate” label to complete the setting.
7.4.3 Key Type/Status Setting
The key type/status is specified in character basis. Each character
programmed is by default of Normal key type. A character of normal key
type can have associate status settings (add Shift/Control/Alternate).
Whereas a character of Scan Code type may not have any associate key
status settings.
• Normal Key Type: When this label is read, the scanner will assume
the following hexadecimal digits are the ASCII code of the character
being programmed. And it will also clear all the associate key status
settings made to the current character.
• Scan Code: When this label is read, the scanner will assume the
following hexadecimal digits are the scan code value of the character
being programmed.
• Add Shift: The Shift key will be sent together with the character
programmed.
• Add Control (L): The left Control key will be sent together with the
character programmed.
• Add Alternate (L): The left Alternate key will be sent together with
the character programmed.