B&B Electronics DSC-200_300 - Manual - Manual (Page 38)

WARNING:
When operating in half-duplex mode, the transmitter drivers must
be disabled before receiving any data. Failure to do so may result
in multiple active output drivers being connected together, which
may cause damage to the board, the computer, and the external
device.
Full-Duplex Operation
Half-Duplex(DTR) Operation
Half-Duplex(RTS) Operation
Jumpers J14-16
TGL0_SEL0
TGL0_SEL1
J14
J15
RXEN0_SEL J16
TGL0_SEL0
TGL0_SEL1
J14
J15
RXEN0_SEL J16
TGL0_SEL0
TGL0_SEL1
J14
J15
RXEN0_SEL J16
Auto-Toggle Operation
TGL0_SEL0
TGL0_SEL1
J14
J15
RXEN0_SEL J16
Figure 20 --- Half/full-duplex and Auto-Toggle selection
Quatech DSC-200/300 User's Manual 36