Figure 13: Signal Timing; Figure 14: Modem Transmit Data - Opticon OPL 7836 Specification Manual

CTS, T×D signals timing
When the CTS line (RTS signal of the host) is turned OFF while sending a T×D signal,
the scanner transmits one character and waits. When the CTS signal is turned ON while
transmitting a character, the character will be transmitted.
Note: When using loopback (wire connection) for RTS, CTS line of the scanner in this
setting, No handshake is not enabled.
c) MODEM
The scanner turns CS line ON before transmitting data. Other processes are
the same as BUSY/READY.

Figure 13: Signal timing

Figure 14: Modem transmit data

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Opticon
OPL 7836
Specifications Manual