B&B Electronics DSC-200_300 - Manual - Manual (Page 31)

9. Click the "Port Settings" tab and then click the "Advanced" button. The DSC-200/300
driver will display a custom Advanced Port Settings control, which allows the ports
UART compatibility mode and FIFO threshold levels to be configured. The threshold
values of full-scale for the transmit buffer and ¾-scale for the receive buffer are
optimal for most applications. Note that the FIFO option for each of the
DSC-200/300's two ports is configured independently.
Quatech DSC-200/300 User's Manual 29