Impulse 2208 - Manual (Page 7)

© Sealevel Systems, Inc. - 5 - SeaLINK+2/232.PC User Manual
Technical Description
Each port of the SeaLINK+2/232.PC utilizes a USB UART. This chip features
programmable baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte
Dual Port RX Buffers. The RS-232 transceivers support data rates up to 460.8K
baud. Refer to Appendix C for cable length limitations.
Connector Pin Assignments (DB9 Male)
Name Pin # Mode
TD Transmit Data 3 Output
RTS Request To Send 7 Output
DTR Data Term Ready 4 Output
GND Ground 5
RD Receive Data 2 Input
DCD Data Carrier Detect 1 Input
DSR Data Set Ready 6 Input
CTS Clear To Send 8 Input
RI Ring Indicator 9 Input
Note: These assignments meet EIA/TIA/ANSI-574 DTE specifications for DB-9
type connectors.