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July 2025
PXI-8433-2
PXI-8433/2, 2-Port, DB-9 Male I/O Connectors, RS-485/RS-422 Interface Module
Actual item may vary if no part number is provided on quote request.
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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
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May 2025
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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-8433/2 PXI Serial Interface Module
The PXI 8433/2 (Part Number: 779744-01) 2 Port, Isolated RS-485/RS-422, Serial Instrument Control Module, is an elite modern interface for fast disengaged communication between ports with RS-485 and RS-422 gadgets. The NI PXI 8433/2 RS-485/RS-422 Interface has Port-PC Isolation and Port-Port Isolation, 2 DB-9 male connectors, 128 Bytes FIFO size, and a 3,000 kbaud maximum baud rate.
According to the NI PXI 8433/2 datasheet, this serial interface has support for superior DMA transfers, multiple threads, and various processors. The user can choose between 4 and 2-wire transceiver modes for medium and full duplex communication. NI serial interfaces are likewise shown as standard COM ports, for compatibility with programs that use serial communications. All NI serial hardware supports standard baud rates. In addition, the NI PXI 8433/2 family of hardware supports any baud rate from 2 baud up to the maximum supported baud rate for that interface. All baud rates are supported because the UART can get within 1.3 percent of all baud rates in that range. The NI device has typical and maximum power requirements of 725 mA and 1 A respectively at +5 VDC. It has operating rated voltages of -25 V to +25 V and -7 V to +12 V for RS-232 and RS-485.
Ground loops, which are current flowing through the ground line when ground voltage levels vary between associated gadgets, are a typical issue in numerous modern applications. On RS-485, this issue brings about a typical mode voltage created by the distinction in ground levels or by noise induced on both lines. Isolating serial ports eliminates this issue and ensures the PC framework in harsh industrial conditions. The device is run using the NI-Serial driver software which is compatible with software packages or application development environments (ADEs) such as LabVIEW or LabWindows/CVI. The National Instruments PXI Serial Interface Modules are accessible with optical isolation up to 2,000 V for such applications.
The PXI-8433/2 weighs 125 g, and measures 6.37 x 3.94 in. in physical dimensions. The module is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1.
Apex Waves will continue to Buy, Sell, and Repair EOL NI Hardware in perpetuity. While the PXI-8433/2 is now Obsolete and is not available from the manufacturer National Instruments (NI), the PXI Serial Interface Module will remain available with Apex Waves. Request your quote today!
| Model | PXI-8433/2 |
|---|---|
| Part Number | 779744-01 |
| Manufacturer | National Instruments |
| Type | PXI Serial Interface Module |
| Ports | 2 |
| Supported Serial Protocols | RS-422, RS-485 |
| Isolation Type | Port-PC Isolation, Port-Port Isolation |
| I/O Connector | Two DB-9 Male Connectors |
| Power Requirement at +5 VDC | 725 mA (Typical), 1 A (Max) |
| Max Baud Rate | 3 Mbps |
| Continuous Operating Rated Voltage | –7 V to + 12 V (RS-485) |
| Operating Temp Range | 0 to 55 °C |
| Storage Temp Range | –20 to 70 °C |
| Dimensions | 3.94 × 6.37 in. (100 × 160 mm) |
| Weight | 125 g. |
| PXI-8433/2 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Submit a Quote Request for Pricing |
Associated part numbers for PXI-8433-2:
National Instruments PXI-8433/2 Frequently Asked Questions
Question: What is the maximum baud rate for the PXI-8433/2?
Answer: The maximum baud rate is 3 Mbps.
Question: What type of I/O connectors are on the PXI Serial Interface Module?
Answer: There are two DB-9 male I/O connectors on the NI PXI-8433/2.
Question: What is the continuous operating rated voltage for the PXI-8433/2?
Answer: The continuous operating rated voltage is -7 V to +12 V.
Question: What is the continuous port-to-host isolation voltage?
Answer: The continuous port-to-host isolation voltage for the NI PXI-8433/2 is 60 VDC (CAT I).
Question: Can the PXI-8433/2 communicate with the RS-232 serial protocol?
Answer: No, the Serial Interface Module communicates with the RS-485 / RS-422 serial protocols.
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