Impulse 2801 User Manual download pdf (Page 10)

Specifications

Sealevel Systems SeaLINK+8 Page 7

Technical Description

The SeaLINK+8 utilizes eight USB UARTs. These chips feature programmable

baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte Dual Port

RX Buffer. The RS-232/422/485 transceiver supports data rates up to 921.6K

baud for RS-422/485 and 460.8K baud for RS-232.

Features

• Hot pluggable device that does not require opening the case

• No system resources are required (i.e. I/O ports or IRQs)

• LED status indicators for power and port activity

Connector Pin Assignments

RS-422/485 (DB-9 Male)

Signal Name Pin # Mode

GND Ground 5

TX + Transmit Data Positive 4 Output

TX- Transmit Data Negative 3 Output

RTS+ Request To Send Positive 6 Output

RTS- Request To Send Negative 7 Output

RX+ Receive Data Positive 1 Input

RX- Receive Data Negative 2 Input

CTS+ Clear To Send Positive 9 Input

CTS- Clear To Send Negative 8 Input

RS-232 (DB-9 Male)

Signal Name Pin # Mode

GND Ground 5

TX Transmit Data 3 Output

RTS Request To Send 7 Output

DTR Data Terminal Ready 4 Output

RX Receive Data 2 Input

CTS Clear To Send 8 Input

DSR Data Set Ready 6 Input

DCD Data Carrier Detect 1 Input

RI Ring Indicator 9 Input

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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Impulse 2801 User Manual Page 10