Symbol LS 4208, Manual

Page: 99 / 278

de-asserted, the scanner asserts the RTS line and waits up to Host Serial Response Time-out for the
host to assert CTS. When the host asserts CTS, data is transmitted. If, after Host Serial Response Time-out, the CTS line is
not asserted, the scanner sounds a transmit error, and discards the data.
When data transmission is complete, the scanner de-asserts RTS 10 msec after sending the last character.
The host should respond by negating CTS. The scanner checks for a de-asserted CTS upon the next transmission of data.
During the transmission of data, the CTS line should be asserted. If CTS is de-asserted for more than 50 ms between characters,
the
transmission is aborted, the scanner sounds a transmission error, and the data is discarded.
If the above communication sequence fails, the scanner issues an error indication. In this case, the data is lost and must be
rescanned.
If Hardware Handshaking and Software Handshaking are both enabled, Hardware Handshaking takes
precedence.
The DTR signal is jumpered to the active state.
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