Symbol LS 3603 Product Reference Manual page 42

LS 3603 Product Reference Guide
RS-232C Options (Continued)
Software Handshaking
5. XON/XOFF
When enabled, the scanner assumes an XON for the first transmission, and
transmits scanned data until an XOFF is received. Transmission continues
when an XON character is received. This option is automatically disabled
when the unit is in Low Power mode.
2-14
Figure 2-2. Software Handshaking