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July 2025
PXI-8422-2
PXI-8422/2, 2-Port, Industrial RS-232 Interface
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
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May 2025
Gregg Flecki**** Verified Buyer
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January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments PXI-8422/2 RS-232 Interface
The National Instruments PXI-8422/2 (Part Number: 777736-02) is a Legacy, 2-Port RS-232 Interface designed for LabVIEW Real-Time and Microsoft Windows Me/9x/NT. This model offers 2000 V, port-to-port optical isolation, a standard baud rate of up to 115.2 kb/s, 64 Byte transmit and receive FIFOs. The National Instruments PXI-8422 is available in 2-port and 4-port configurations. Its 2-port model comes equipped with DE9M (DB9) connectors, whereas position jacks are provided as I/O connectors in the 4-port model. The DB-9 male connectors used in this interface offer a standard pin arrangement for RS232 and RS485 connections.
The NI PXI-8422/2 is offered with driver software for Microsoft Windows 2000, NT, and XP. Users will be able to install and use this serial device`s server as a standard serial port from applications written with NI-VISA or with their existing applications. Like any other serial device, the NI PXI-8422/2 uses TCP/IP communication protocol, which resides on embedded firmware in the serial device server and handles entire communications between the host PC and the serial device server.
This interface does not only communicate with devices that operate with standard baud rates, but it can also interact with devices that run with non-standard baud rates. This device enables the user to take advantage of the latest PC technology as it features hyperthreading and multiprocessor capabilities. The NI PXI-8422/2 interface has a new, memory mapping feature that users can utilize to connect with more serial devices without encountering any resource conflict. While operating at +5 VDC, this interface device requires 400 mA typical and a maximum of 650 mA.
The NI device measures 6.3 x 3.9 in. in physical dimensions. It has recommended operating and storage temperature ranges of 0 to 55 °C and –20 to 70 °C respectively, non-condensing operating and storage humidity ranges of 10 to 90% and 5 to 95% respectively. The RS-232 interface device is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1.
PXI-8422/2 Obsolete Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.
| Model | PXI-8422-2 |
|---|---|
| Part Number | 777736-02 |
| Manufacturer | National Instruments |
| Type | RS-232 Serial Interface |
| Ports | 2 |
| I/O Connector | DB-9 male |
| Maximum Transfer Rate | 115.2 kb/s |
| Dimensions | 6.3 x 3.9 in. |
| FIFO Size | 64 B |
| PXI-8422/2 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PXI-8422-2:
National Instruments PXI-8422/4 Frequently Asked Questions
Question: What is the typical current of the PXI-8422/2 at +5 VDC?
Answer: The typical current of the PXI-8422/2 at +5 VDC is 400 mA.
Question: Which driver software should be used with the PXI-8422/2?
Answer: The driver software that should be used with the PXI-8422/2 is NI-Serial.
Question: What is the port-to-port isolation for the NI PXI-8422/2?
Answer: The port-to-port isolation for the NI PXI-8422/2 is 2000 V optical.
PXI-8422-2 PDF Manuals
ARCHIVED--GETTING-STARTED-WITH-YOUR-PXI-SERIAL-HARDWARE-AND-SOFTWARE-FOR-WINDOWS-2000.PDF
ARCHIVED--GETTING-STARTED-WITH-YOUR-PXI-SERIAL-HARDWARE-AND-SOFTWARE-FOR-WINDOWS-ME-9X.PDF
ARCHIVED--GETTING-STARTED-WITH-YOUR-PXI-SERIAL-HARDWARE-AND-SOFTWARE-FOR-WINDOWS-NT.PDF
ARCHIVED--NI-SERIAL-HARDWARE-SPECIFICATIONS-GUIDE.PDF
NI-SERIAL-HARDWARE-SPECIFICATIONS-GUIDE.PDF
NI-SERIAL-LEGACY-HARDWARE-SPECIFICATIONS-AND-FEATURES-GUIDE.PDF
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