Product Reference Guide
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Appendix G
Handheld Data Format Requirements
This appendix provides application notes to describe the general format of data
that can be accepted by the scanner through the auxiliary port as transmitted
from a handheld scanner.
Handheld Data Format Requirements General
• RS232 - 9600 bps, 8 data bits, 1 stop bit, no parity.
• RS-232 RTS is used to “bracket” the data received from the handheld: RTS
must be asserted high during data transmission, and de-asserted after
label transmission is complete.
No other flow control mechanisms are required or supported.
There must be a delay of at least 2 bit cell times (approximately 208
microseconds) following the transmission of the last character before de-
assertion of the RTS signal.
The de-assertion of the RTS signal must happen in less than 50 millisec-
onds after the last character is transmitted.
• USB handhelds enumerate as a CDC ACM serial device.
• USB devices should also bracket the data with the RTS equivalent.
• The time between character transmission can be no longer than 50 milli-
seconds.
• Symbologies requiring fixed lengths (UPC/EAN) will enforce length
requirements for validation of the label.
• Handheld will be required to transmit start and stop characters for Cod-
abar and Code39 labels.
• Appropriate industrial length requirements will be enforced (if configured)
for validation of the label.
• Maximum label lengths will be enforced for label validation (i.e. labels lon-
ger than the maximum label size will not be validated).
• Standard Datalogic formats generally use a single prefix character. see
specific formats section.
• Maximum label size allowed including identifiers is 2714 bytes
• Recommendations:
•Handheld should not be configured for audible label read indication.
•Handheld should not be configured for visual label read indication.
•Handheld should not be configured for continuous label read mode.
Summary of Contents for Magellan 9300i
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