Manual

Technical Description
Sealevel Systems SeaLINK+422 Page 2
Technical Description
The SeaLINK+422: utilizes a USB UART. This chip features programmable baud rate, data format, 128 byte Dual
Port TX Buffer, and 384 byte Dual Port RX Buffer. The RS-422 transceiver supports data rates up to 921.6K baud.
Features
• Hot-Pluggable device
• Does not require opening the case
• No system resources are required (i.e. I/O ports or IRQs)
Connector Pin Assignments (DB-9 Male)
Signal Name Pin # Mode
RX+ Receive Positive 1 Input
RX- Receive Negative 2 Input
TX+ Transmit Positive 4 Output
TX- Transmit Negative 3 Output
GND Ground 5
NC 6,7,8,9