USB TO RS232 ADAPTER / USB TO DUAL RS232 CONVERTER

INTRODUCTION (USB TO DUAL RS232 CONVERTER)

Model: USB-232A-1 $39.95 In stock

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The USB-232A-1 is a port-powered, bi-directional USB to RS232 converter that can be used to convert any standard USB port (USB 2.0 - backward compatible) into two RS232C ports and vice versa.

This high-quality, high-performance USB to dual RS232 converter uses the latest FTDI chipset and is fully compatible with Windows 8 / 7 / Vista / XP / Server2008 /  Server2003 / 2000 / 98 (32-bit), Windows 8 / 7 / Vista / XP /  Server2008 / Server2003 (64-bit), Win CE, Mac, and Linux. The unit comes with a USB type A female connector on the USB side and two DB9 male connectors on the RS232 side.

CommFront's product quality is ensured by our strict ISO 9001:2008 quality control system, and we back our high-quality USB RS232 converter /adapter products with a 30-day risk-free money-back guarantee and a 5-year replacement warranty.

Data Sheet | Drivers | FAQs |

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QUALITY - SAFETY - WARRANTY

Quality - USB TO RS232 CONVERTER Safety - USB TO RS232 CONVERTER Warranty - USB TO RS232 ADAPTER

PRODUCT PHOTOS

FEATURES (USB TO DUAL RS232 CONVERTER)

  • Adds two RS-232 ports to your USB port.
  • 300 to 128K Baud operation (auto-sensing and self-adjusting).
  • RS-232 data & signals: TX, RX, RTS, CTS, DTR, DSR, DCD, RI, and GND.
  • Supports Windows 8/7/Vista/XP/Server2008/Server2003/2000/98 (32-bit), Windows 8/7/Vista/XP/Server2008/Server2003 (64-bit), Win CE, Mac, and Linux.
  • Supports remote wakeup and power management.
  • Plug and play (hot-pluggable, data format auto-sensing and self-adjusting).
  • Port-powered, no external power required.
  • No IRQs required, no IRQ conflicts.
  • Surface Mount Technology manufactured to RoHS and ISO-9001 standards.
  • Safety: Strictly certified by SGS (Cert No. EM/2008/20062C, EM/2008/20063C).
  • 5-year manufacturer's warranty.

SPECIFICATIONS (USB TO DUAL RS232 CONVERTER)

Part Number: USB-232A-1
Compatibility: USB 2.0 (backward compatible) and EIA/TIA RS-232C standards
Power Source: Port power from USB port
Current Consumption: Less than 100mA
Output Power on Pin 3: About -9VDC
Baud Rates: 300 to 128,000bps (auto-sensing and self-adjusting)
Distance: USB side: 10ft (3m); RS-232 side: 16ft (5m)
Connectors: USB side: Type A Female; RS-232 side: 2x DB-9 Male
LEDs: 2x TX, 2x RX and 1x Power
Dimensions (H x W x D): 0.9 x 2.8 x 3.5 in (24 x 72 x 88 mm) (excluding cable)
Cable Length: 2 ft (0.6 m)
Weight: 2.9 oz (83 g)
Operating Temperature: 32ºF to 95ºF (0ºC to 35ºC)
Operating Humidity: Up to 90% RH (no condensation)

CONVERTER CONNECTOR PINOUTS

USB Side

USB Connector

USB Type A Connector (view from front)

RS232 Side (2 nos.)


(2x)		  
Pin Function Description
1 DCD Data Carrier Detect
2 RX Receive Data
3 TX Transmit Data
4 DTR Data Terminal Ready
5 GND Ground (Signal)
6 DSR Data Set Ready
7 RTS Request to Send
8 CTS Clear to Send
9 RI Ring Indicator

DB-9 Male (view from front)

DB-9 / DB-25 CONVERSION TABLE (DTE)

DB-9 Pin Assignment: 1 2 3 4 5 6 7 8 9
DB-25 Pin Assignment: 8 3 2 20 7 6 4 5 22
Function: DCD RX TX DTR GND DSR RTS CTS RI

TROUBLESHOOTING INSTRUCTIONS FOR USB TO DUAL RS232 CONVERTER

1) Driver installation

Make sure that the USB-232A-1 is connected to your USB port, and the driver is installed correctly (as shown above); otherwise, please reinstall the driver (refer to user manual for details).
2) Make sure the “Power” LED on USB-232A-1 is lit up.
3) Loopback Test

USB to RS232 converter loopback
  • Connect pin 2 and 3 of the DB-9 connector (as shown above).
  • Run 232Analyzer FREE version software on your computer.
  • Select "ASCII" for both the Send and Receive data formats. Then send command and/or string such as "CommFront" from the 232Analyzer software. You should receive an echo of the command/string sent ("CommFront"). By performing a simple loopback test like this, you can test both the transmitter and receiver of the converter. This is very helpful when you are in doubt about the performance of your converter.

RS232 to RS422 converter - loopback test 2
Screenshot: Send/receive commands from 232Analyzer software.

232Analyzer is an advanced RS232 Serial Protocol Analyzer software that allows you to control, monitor and analyze serial port (RS232 / RS485 / RS422 / TTL, etc.) activities. Not just the data, it also allows you to monitor or change RS-232's line states: RTS, CTS, DTR, DSR, DCD, and RI.

The FREE version (no time limitation) can be downloaded from here.

TECH NOTES

RS-232: 3 easy steps to understand and control your RS232 devices
RS-485/RS422: Building a reliable RS485/RS422 network