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Communication Between the Cordless System and the Host
The cordless scanner provides immediate feedback in the form of a "good read"
indication (a green LED on the scanner and an audible beep) after a bar code is
scanned correctly and the base has acknowledged receiving the data. This is
possible since the cordless system provides two-way communication between
the scanner and the base.
When data is scanned, the data is sent to the host system via the base unit.
Confirmation from the host system or the base indicates that the data sent was
received by the host. The cordless scanner recognizes data acknowledgement
(ACK) from the base unit. If it cannot be determined that the data has been
properly sent to the base, the scanner issues an error indication. You must then
check to see if the scanned data was received by the host system.
Connecting the Base When Powered by Host
(Keyboard Wedge)
A base can be connected between the keyboard and PC as a "keyboard wedge,"
plugged into the serial port, or connected to a portable data terminal in wand
emulation or non decoded output mode. The following is an example of a
keyboard wedge connection:
1. Turn off power to the terminal/computer.
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3) Base sends
data to host
IMAGETEAM™ 2020/5620 System Manual
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