Mindeo FS390, User Manual

Page: 15 / 127

7
The scanner has a TTL-level RS-232 interface to communicate with a host. RTS and CTS are only
used for hardware flow control and should be leaved unconnected or tied to V
CC
by 100K Ohm
resistors when they are not used.
The following diagram demonstrates the interconnection.
CTS
TXD RXD
RTS
Fixed
Scanner
Host
RTS
CTS
TXD RXD
Figure 2-3 Scanner and Host interconnection via RS-232
D-
D+ D+
D-
Fixed
Scanner
Host
Figure 2-4 Scanner and host interconnection via USB