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User’s Manual: Isolated, RS232 / RS485 to USB Converter. Model SC11U
Introduction
The SC11U allows you to connect your Serial devices to various systems by using a USB (Universal Serial Bus )
Interface. The Serial port is RS232 / RS485 & RS422 configurable. With Auto Detect and Auto baud rate function
SC11U is able to automatically detect the data flow and switch the direction of the data lines as well as to
automatically configure RS422/485 signals to any baud rate. 3000VDC Optical Isolation and Surge-protection on each
data line gives the interfacing devices protection from high voltage spikes. It draws Power from the USB port & does
not need any external adapter. SC11U supports speed upto 115.2 Kbps. It is fully compatible with USB V1.0 to 2.0
Specification
USB 1.0, 1.2 & 2.0. 12Mbps
Serial Ports: Auto Detect
RS232 signal: Rx, Tx, Gnd, CTS, RTS, DSR, DTR
RS422 signal: Differential 4 full-duplex wires.
RS485 signal: Differential 2 half-duplex wires.
Built in Terminal 100 Ohm Terminal resistor SW selection ON/OFF
Serial Parameters: Parity: None, Odd, Even, Mark, Space.
Data bits: 5,6,7,8.
Stop bits: 1, 1.5, 2.
Flow Control: Xon / Xoff or Hardware
Communication Speed: From 300bps to 921kbps for RS232 & 320kbps for RS485, Auto switching.
Surge Protection on RS422/485 lines.
Distance: Up to 4000ft (1250M)
Cable : USB Type A to Type B
Connection type: RS232:DB 9 Pin Male.
RS485/422: 4 Pin Screw Terminal.
Signals LED: Power on TX, RX.
Isolation Voltage: 3000V DC
ESD Protection: 15KV on all signals
Surge Protection: 600W on all 485/422 lines
Operating environment: 0 to 60 C
Storage temperature: -20 to 70 C
Dimension: 88mm X 91mm X 27mm
Weight: 95g
Power Supply: USB Port
OS supported: Win 7,8.1, 98/ME/2000/XP/2003 //Vista, Win 10, Linux, Mac.
LED Indicators
SYS (Red)
: Power,
RX (Orange)
: Data received indicator
TX (Green)
: Data sent indicator
USB to RS232 / RS485 / RS422 Optically Isolated Converter
