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Section 6 Secondary Interface
6–1
7837 User’s Guide
Secondary Interface
By switching interface cables, the 7837 scanner can communicate with a
portable data terminal (secondary interface), in addition to the host terminal
(primary interface).
The secondary interface can be programmed at any time.
Secondary Code 39 Wand Emulation
In Wand Emulation mode, the scanner decodes the bar code then sends data
in the same format as a wand scanner. The Code 39 Format converts all
symbologies to Code 39. The Same Code Format transmits UPC, EAN, Code
128 and Interleaved 2 of 5 without any changes, but converts all other
symbologies to Code 39. These codes set the transmission rate to 25 inches
per second and the output polarity to black, high.
Default = Code 39 Format.
* Wand Emulation
Code 39 Format
Wand Emulation
Same Code Format
Secondary RSĆ232 Connection
All communication parameters between the scanner and terminal must match
for correct data transfer through the serial port using RS-232 protocol.
RS-232 programmable selections are used by both the primary and secondary
interfaces. Changing an RS-232 parameter (e.g., baud rate or parity), while in
primary
or
secondary mode will affect both interfaces.
RS-232 Interface