Understanding The Bar Code Wedge - Intermec Janus 2050 User Manual

You can use Input Manager to customize how the reader handles data from the
keypad, wand, or scanner. The reader can display all input, beep when labels
are scanned, and parse reader commands. For example, when you scan a bar
code label, Input Manager can identify the symbology and if the label includes
reader commands.
Virtual Wedge The Virtual Wedge decodes and manages bar code input,
making the reader functionally equivalent to a wedge reader connected to a
PC. This program facilitates rapid porting of PC applications to the reader.
When you scan a bar code label, the Virtual Wedge inserts the data into the
keyboard buffer as if it had been typed. The Virtual Wedge sends configuration
commands to Configuration Manager. The Virtual Wedge also recognizes and
implements reader commands.
Direct Hardware Wedge The Direct Hardware Wedge is a new feature of
JANUS 4.0 software that allows bar code data to emulate keystrokes on the
keypad. For more information on the Virtual Wedge and Direct Hardware
Wedge, see "Understanding the Bar Code Wedge," in the following section.

Understanding the Bar Code Wedge

The Bar Code Wedge is a Reader Services feature that enables your JANUS
device to decode bar codes, making it functionally equivalent to a wedge
reader connected to a PC. Prior to JANUS 4.0 software, the only wedge option
was the Virtual Wedge. With the 4.0 software release, the Reader Services
wedge feature has a second option, the Direct Hardware Wedge.
When you scan a bar code with the Virtual Wedge Option enabled, data is
inserted directly into the keyboard buffer as if it had been typed. The Direct
Hardware Wedge provides hardware level PC compatibility and processes the
scanned data directly as individual keystrokes.
The Direct Hardware Wedge provides bar code data to applications that
directly access the hardware, it is the option to select when working with
applications (for example, Attachmate, FTP, Zstem for DOS, PC-TCP for DOS,
and others) that require keystroke interrupts to occur when data is received.
The Virtual Wedge option, which is up to 10 times faster than going through
the PC hardware, is the option you should select when you need maximum
performance.
If you have developed advanced applications for your JANUS device, you need
to customize how the reader and application handle data from the keypad,
wand, or scanner. Refer to the JANUS Programmer's Software Kit and
reference manuals for instructions.
The Virtual Wedge is the default configuration. You can enable the Direct
Hardware Wedge by using the KWC.COM program. For more information, see
"Using the Wedge Configuration Program," later in this chapter.
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