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Technical description – Impulse 2401 User Manual

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Technical Description

Sealevel Systems SeaLINK+4/232 Page

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Technical Description

The SeaLINK+4/232 utilizes four 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 transceiver supports data rates up to
460.8K baud.

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 USB Enabled and port activity

Connector Pin Assignments (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