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NI USB-232

1-Port RS232 Interface for USB

  • 1-port USB RS232 serial interface with integrated 2 m USB-A cable, D-Sub 9-Pin male connector
  • Compatible with any application that uses COM ports on Windows Vista/XP/2000 PCs
  • Standard baud rates up to 230.4 kb/s, 128 B transmit-and-receive FIFOs
  • Fully functional RS232 port, including RTS/CTS hardware handshake lines
  • Easy programming in NI LabVIEW, NI LabWindows™/CVI, and ANSI C/C++ with NI-VISA API
  • NI-Serial device driver integrates with included NI-VISA driver for easy serial port programming
Data Sheet

An NI USB-232 interface transforms your USB port into a single asynchronous port for communication with RS232 devices. The USB-232 is shipped with NI-Serial driver software for Windows Vista/XP/2000. You can use a USB-232 port as a standard serial port from your applications or with applications written with NI-VISA.

The mark LabWindows is used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries.

Step 1: Verify Device and Quantity Selection
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
778472-01 NI USB-232 1 - 2 $ 99.00
Step 2: Select Optional Accessories
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
Shielded Cables
182238-01 RS232 Null Modem Cable (1m) 5 - 10 $ 25.00
182238-02 RS232 Null Modem Cable (2m) 5 - 10 $ 30.00
182238-04 RS232 Null Modem Cable (4m) 5 - 10 $ 35.00
183045-01 RS232 Straight Through Cable (1m) 5 - 10 $ 25.00
183045-02 RS232 Straight Through Cable (2m) 5 - 10 $ 30.00
183045-04 RS232 Straight Through Cable (4m) 5 - 10 $ 35.00
Step 3: Add to Cart or Get a Quote

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Specifications Documents


Specifications Summary

General 
Form FactorUSB
Operating System / TargetWindows
Serial Standard CompatibilityRS-232
LabVIEW RT SupportNo
Port Information 
Number of Ports1
Maximum Transfer Rate230.4 kbits/s
I/O FIFO Buffer Size128 B
Maximum Device Connections / Port1
Maximum Cable Length15.6 m
Handles RTS/CTS Handshake LinesYes
Direct Memory Access (DMA)No
Power Requirements 
Voltage5 VDC
Current100 mA
SourceInternally Powered
Physical Specifications 
Length3.81 cm
Width3.56 cm
Height1.52 cm
I/O Connector9-pin D-Sub (DB-9)
Operating Temperature0..55 °C

Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

For more information about your warranty options:

Calibration

NI recognizes the need to maintain properly calibrated devices for high-accuracy measurements. NI provides manual calibration procedures, services to recalibrate your products, and automated calibration software to calibrate many NI measurement products.

Training

NI training is the fastest, most certain route to productivity with NI tools and successful application development.

Repair Services

Return your registered product under warranty at no additional labor and parts cost. NI offers fault location, diagnostics, and repair any time the system fails as well as any adjustments needed to restore the hardware to manufacturing specifications.

Technical Support

ni.com/support

Select from the following compatible software for the NI USB-232.

Graphical Programming Text-Based Programming
Option 1: Select one of the following NI Developer Suite packages or Configure Your NI Developer Suite >>
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
DS410836 NI Developer Suite Core (English)
NI Recommended
  $ 4,699.00

Guarantee your price for 30 days with an NI Instant Quote (learn more)

You have selected United States as the country where you will use the product(s) (change).

Option 2: Select any of the following software products
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
776670-09 NI LabVIEW Full Development System for Windows (English) 1 - 2 $ 2,599.00

Guarantee your price for 30 days with an NI Instant Quote (learn more)

You have selected United States as the country where you will use the product(s) (change).

Option 1: Select one of the following NI Developer Suite packages or Configure Your NI Developer Suite >>
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
DS410836 NI Developer Suite Core (English)
NI Recommended
  $ 4,699.00

Guarantee your price for 30 days with an NI Instant Quote (learn more)

You have selected United States as the country where you will use the product(s) (change).

Option 2: Select any of the following software products
Part
Number
Description Est Ship Days Glossary Definition US Dollars
(change)
Qty
776800-09 LabWindows/CVI Full Development System for Windows 5 - 10 $ 2,599.00

Guarantee your price for 30 days with an NI Instant Quote (learn more)

You have selected United States as the country where you will use the product(s) (change).


Driver Software