USB to RS-232/422/485
Isolated Converter
Quatech Model SSU2-400I
Operation Manual
First Edition, Jun 2008
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Table of Contents
1. Introduction ……………………………………………… 2
2. Package checklist …………………………………………… 3
3. Product Specification …………………………………… 4
4. Product Panel Views Description …………………… 7
Product Views …………………………………… 7
USB Type B Connector ……………………………………… 7
Serial I/O Port of RS-232/422/485 ………………………..… 8
Terminator …………………………………………………… 8
LED Indicators ……………………………………………… 9
5. Driver installation …………………………… 10
Driver Installation …………………………………………… 10
6. Hardware Installation & Setup ……………………… 15
Hardware installation ………………………………………… 15
Hardware setup ………………………………………………… 17
Appendix A - Pin Outs and Cable Wiring ………… 21
USB Layout Diagram ………………………………………… 21
RS-232 Pin Assignment ……………………………………… 21
RS-232 Wiring Diagram ……………………………………… 22
RS-422 Pin Assignment ……………………………………… 22
RS-422 Wiring Diagram ……………………………………… 22
RS-485 Wiring Diagram ……………………………………… 22
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Introduction
Thank you for your purchase of the USB to serial adapter. Featuring USB
(Universal Serial Bus) interface technology, it is converted the USB to RS-232 or
industrial RS422/485, so it can be easily adopted for industrial machines with
RS232 or RS422/485 interfaces. The USB to Serial converter is fully compatible
with the USB V1.02.0 . This converter is USB bus powered and does not need
any power adapter. You can connect a PC USB port or USB hub to this converter
via USB cable and High-S peed RS-232/422/485 serial port (Auto-Detection) which
features easy connectivity for traditional serial devices in your working
environments.
The RS232 standard supports handshaking signals (such as RTS, CTS) and
full-duplex communication. For the RS485 control, it is completely transparent to
user and their software written for Half-Duplex COM works without any extra
modification effort.
The USB to Serial Isolated Converter meets the industrial level as it provides 3000
VDC of isolation to protect the host computer or other connected equipments from
ground loops and destructive voltage spikes on the RS-232/422/485 data lines. It
also offers internal surge-protection on data lines. Internal high-speed transient
suppressors on each data line to protect it from dangerous voltages levels or
spikes.
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Package checklist
This product is shipped with the following items:
1 unit of USB to RS-232/422/485 Isolated converter
1 unit of A type to B type USB cable
User Operation Manual
Software CD
NOTE: Notify your sales representative if any of the above items is missing or
damaged
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Product Specification
Serial Port
RS-232
● No. of Ports : RS-232 * 1 Port
● Port Type : DB9 male
● RS-232 Signals :
●
●
● Baud Rate Speed : 300 bps921.6k bps
● Parity :None , Odd , Even , Space , Mark
● Data Bit : 5 , 6 , 7 , 8
● Stop Bit: Auto-Detection : 1 , 1.5 , 2,
● Flow Control : X-On / X-Off or Hardware
● Optical isolation protection : 3000V DC
● Connected Serial port type identification : Auto-Detection
● 15KV ESD for all signal
Receive buffer : 576 Byte
Transmit buffer : 640 Byte
DCD , RX , TX , GND , RTS , CTS , DTR , DSR
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RS-422/485
● No. of Ports : 422/485 * 1 Port (Terminal Block)
● RS-422 Signals : RxD+ , RxD- , TxD+ , TxD- in Full-duplex (Surge Protection)
● RS-485 Signals : Data+ , Data- in Half-duplex (Surge Protection)
●
●
Receive buffer : 576 Byte
Transmit buffer : 640 Byte
● Baud Rate Speed : 300 bps230.4k bps
● Built-in RS-422/RS-485 Terminal Resister (Surge Protection)
● Optical isolation protection : 3000V DC
● Connected Serial port type identification : Auto-Detection
● Built in Terminal 100 Ohm Terminal resistor SW selection ON/OFF
● 15KV ESD for all signal
USB Port
No. of Ports : USB * 1 Port
● Fully compatible with the USB V1.0, V1.2, V2.0
● USB type B connector
● Baud Rates : Full speed 12 Mbps.
Driver OS Support
●
Windows – 98E / 2000 / XP / Server 2003 /Vista , Mac osx / os9 , Linux 2.4 / 2.6
Power :USB bus power as voltage DC +5V
Led Lamp :
SYS (Red), Rx (Orange), Tx (Green)
Environment :
● Operating Temperature: 070
● Storage Temperature : -2085
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Humidity: 5-95% RH
Dimensions : 88 * 91 * 27 mm ( W * D * H )
WEIGHT : 94 gm
Regulatory Approvals :
●
●
EMC : FCC Class A, CE Class A
WARRANTY : 1 Year
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