National Instruments

 National Instruments modular systems include Chassis, Power Supplies, Controllers, and Modules. The PXI, VXI, DAQ, cRIO, C Series, M Series, and more are available from Apex Waves. Buy replacement models, sell your surplus, or have your failed unit repaired. 

External Controllers

The National Instruments External Controllers for PXI have the capability to control PXI or PXI Express systems via an MXI interface. These External Controllers are rack-mount controllers with hot-swappable fans, high-performing multicore processors, and a maximum of 4 GB of dual-channel DDR2 RAM. The NI External Controllers for PXI are created for for mission-critical, physically demanding applications.

PXI Automotive Ethernet Interfaces

The National Instruments PXI Automotive Ethernet Interface Modules allow a PXI Chassis to connect and communicate on an Automotive Ethernet network. These modules can be utilized with the NI‑XNET driver. The NI PXI Automotive Ethernet Interface Modules are used to test and validate automotive electronic control units.

Remote IO

The National Instruments Remote I/O is an affordable, modular option which can be utilized for basic tasks while a controller handles advanced tasks like image processing, motion control, and high-speed or specialty measurements. Remote I/O is also commonly referred to as block or slice I/O. The NI remote I/O system is controlled from an NI real-time controller linked through EtherCAT.


The National Instruments FieldDAQ Devices include Voltage Input Devices, Strain/Bridge Input Devices, Temperature Input Devices, and more. The NI FieldDAQ devices are resistant to water and dust and are dust- and water-resistant and provideTSN technology for simple distribution. In addition, NI FieldDAQ devices are ideal for rugged environments with IP65/67-rated ingress protection.

Touch Screen Monitors

The National Instruments Touch Screen Monitors provide a color LCD and an integrated touch interface. These Touch Screen Monitors are perfect for industrial environments with an IP65 rating. The NI Touch Screen Monitors are available with 12, 15, or 17 inch displays.

PXI ARINC 429 Interface Modules

The PXI ARINC 429 Interface Modules offer PXI bus interfaces for ARINC 429 protocols. These modules are made by Astronics Ballard Technology and National Instruments. The PXI ARINC 429 Interface Modules come with special features such as parametric control. The PXI ARINC 429 Interface Modules are ideal for product development, production, and system test applications.

Direct Injector Control and Measurement Devices

The National Instruments Direct Injector Control and Measurement Devices have the capability to drive any fuel system or injector component. These NI devices can be used for up to eight piezoelectric or 16 solenoid direct injectors. The NI Direct Injector Control and Measurement Devices are equipped with a built-in oscilloscope and high-resolution engine position tracking.

PXI MIL-STD-1553 Interface Modules

The National Instruments PXI MIL-STD-1553 Interface Modules offer PXI bus interfaces for the MIL-STD-1553 protocol. These interface modules are designed with Astronics Ballard Technologies and National Instruments. The PXI MIL-STD-1553 modules come with single-function or multifunction channel operation and anywhere from 1-4 MIL channels.

PXI Avionics Multiprotocol Interface Modules

The National Instruments PXI Avionics Multiprotocol Interface Modules offers PXI bus interfaces for the MIL-STD-1553 and ARINC 429 protocols. These interface modules are compatible with LabVIEW and C/C++ instrument drivers. The PXI Avionics Multiprotocol Interface Modules are ideal for applications such as product development, production, and system test.

Motor Drives

The National Instruments Motor Drives can be used with the NI-7330, NI-7340, or NI-7350 Motion Controllers. The NI Motor Drives consist of two types: stepper or servo. The Motor Drives have either 2 or 4 axes and are well-suited for lab and industrial applications.

VirtualBench Instruments

The National Instruments VirtualBench Instruments are a combination of a mixed-signal oscilloscope, a digital multimeter, an arbitrary waveform generator, digital I/O, and a programmable DC power supply in a single instrument. NI VirtualBench Instruments can be utilized with LabVIEW software.

USRP Software Defined Radio Devices

The National Instruments USRP Software Defined Radio Devices offer a software-defined RF architecture to quickly design, prototype, and deploy wireless systems with customized signal processing. The NI USRP Software Defined Radio Devices include features such as host-based processors, FPGAs, and RF front ends. These NI devices can be utilized for applications like multiple input, multiple output (MIMO) and LTE/WiFi testbeds, SIGINT, and radar systems.

RF Power Sensor Devices

The National Instruments RF Power Sensor Devices have the capability to measure the power of ongoing wave signals, ranging from single-tone and multitoned sources to wideband, complicated digital waveforms. The NI RF Power Sensor Devices come with special features like highly precise measurements and a large dynamic range.

SwitchBlock Series

The National Instruments SwitchBlock Series consists of Matrix Modules and PXI Carrier Modules. The NI SwitchBlock system contains a PXI carrier that can hold as many as six 1-slot relay cards. SwitchBlock systems allow you to reduce wiring and make connectivity easier.

PXI IF Conditioning Modules

The National Instruments PXI IF Conditioning Modules are great for for spectrum monitoring applications in which several interfering signals are spaced too close in frequency to the measurement signal. The NI PXI IF Conditioning Modules help with low-power signals.


The National Instruments VXI and VME Remote Controllers include a variety of interfaces to control the VXI system from the PXI system, PC, or workstation. These controllers have the ability to control VXI or VME systems from another system, as well as a computer through a PXI, PCI(e), or USB bus based system. Some even use an MXIe or MXI-2 based controller to control the system. In addition, there are VXI and VME Mainframes, Embedded Computers, modules, Terminal Blocks, and more.

PXI IF Transceivers

The National Instruments PXI IF Transceivers are designed for applications like radio‑frequency identification test, spectral monitoring, real‑time spectrum analysis, and others. The NI PXI IF Transceivers have multiple inputs and outputs and can handle high-speed signal processing with ease.

SSR Series

The National Instruments SSR Series of Modules and Backplanes can be utilized with PC and NI DAQ devices to control or sense voltages. The NI SSR Modules plug into the SSR Backplanes. This series is compatible with the SC-205X devices.

SLSC Series

The National Instruments Switch, Load, and Signal Conditioning (SLSC) Series is designed as an addition to NI data acquisition instruments, including CompactRIO and PXI. The SLSC Series consists of SLSC Chassis and SLSC modules. The NI SLSC Series delivers a modular solution to various types of testing, such as fault insertion and signal conditioning.

Touch Panel Computers

The National Instruments Touch Panel Computers are well-suited for human machine interface (HMI) applications in industrial applications. NI Touch Panel Computers have varying display sizes available from 6 to 15 inches. These Touch Panel Computers do not include fans and can be easily used in conjunction with other NI hardware via LabVIEW.


The National Instruments DAQCards encompass several types of multifunction I/O cards, devices, oscilloscopes, and other types of modular DAQ products. Many of the NI DAQCards are considered obsolete by National Instruments, but are still sold by Apex Waves.


The National Instruments accessories comprise a wide variety of terminal blocks, connector blocks, expanders, rack-mount kits, and other types of accessories that can be used with NI instruments. NI accessories can be purchased with other NI products to configure systems for different requirements.

AT Series

The National Instruments AT Series contains a variety of interfaces, modules, and boards. The NI AT Series products are mostly obsolete, but Apex Waves still sells these obsolete and legacy parts.

BNC Series

The National Instruments BNC Series consists of Analog Breakout Boards and Terminal Blocks. The NI BNC products are equipped with BNC connectors. These products can be used with NI DAQ Boards.

NB Series

The National Instruments NB Series of Boards are designed for use with Macintosh NuBus computers. These boards can be utilized with the NB-DMA2800 so obtained information is transferred to memory. THis combination is ideal for high-performance PCs for scientific and engineering applications.

PC Series

The National Instruments PC Series includes Multifunction I/O Modules and Analog and Digital I/O Boards. These devices have varying connector types and special features. Many of the PC Series models are obsolete.


The National Instruments PCMCIA Series Devices consists of GPIB Instrument Control Devices, CAN Interface Devices, Fieldbus Interface Devices, Serial Interfaces, Digital Multimeters, and more. NI PCMCIA devices are designed to the Personal Computer Memory Card International Association (PCMCIA) standards. The majority of the PCMCIA Series devices are now considered obsolete.

Wireless Measurement Devices

The National Instruments Wireless Measurement Devices deliver similar quality and preciseness as regular wired measurement systems, but these devices have more versatility and are more affordable. NI Wireless Devices also make system deployments easier. There are several types of wireless devices, including Wireless Vibration Measurement Devices, Wireless Sensor Network Devices, and Wi-Fi Data Acquisition Devices.

RMX Series

The RMX Series of Electronic Load Devices and Mainframes offer configurable DC power-sinking features for power source characterization and assessment. Numerous loads can be linked in parallel to enhance the system's total power capacity.

PXI Analog Output Modules

PXI Analog Output Modules from National Instruments are an excellent choice for applications that require voltage output and that are timed by software, hardware, or both. Well suited for scalable and modular systems, PXI Analog Output Modules are a versatile choice for test systems of all sizes.


TestScale from National Instruments is a flexible and modular form factor for instrumentation. The compact size of TestScale equipment allows for customization and scaling to fit the specific needs of the user- whether it is being installed within a test fixture or a rack. Capable of easily integrating with NI development software, TestScale products are ideal for dispersed test lines with high volume.

Smart Cameras

The National Instruments Smart Cameras have the capability to capture machine vision images by utilizing high-quality image sensors and powerful processors. The NI Smart Cameras can be configured with Vision Builder for Automated Inspection (AI) software.

NI-656x Series

 The National Instruments NI-656x Series of Digital Waveform Generators can be utilized as a pattern generator, stimulus-response tester, PC/peripheral device interface, or pattern analyzer. These Digital Waveform Generators have 16 channels and can create and obtain information at 200 Mb/s or 400 Mb/s. The NI-656x Series also has the capability to utilize NI-TClk to synchronize several instruments.


GPIB Instrument Control Modules

 The National Instruments GPIB Instrument Control Modules integrate non-PXI devices into a PXI system via the GPIB standard. The PXI GPIB Instrument Control Modules have IEEE 488 controllers for PXI systems. The user can select an option that supports Gigabit Ethernet transfer rates.


PXI-CAN Interface Series

The PXI-CAN Interface Modules by National Instruments allows a PXI Chassis to link to and communicate on a Controller Area Network (CAN) bus. The PXI CAN Interface Modules communicate with onboard transceivers for Single Wire CAN, Low-Speed/Fault Tolerant, and/or High-Speed/Flexible Data-Rate. With the NI-XNET driver for these modules, the user can create applications that necessitate high-speed, real-time manipulation of numerous CAN signals and frames.

E Series

The National Instruments E Series of Multifunction DAQ Devices are equipped with 16-64 channels, 12 or 16-bit resolution, and sample rates to 1.25 MS/s maximum. The NI E Series devices utilize the National Instruments DAQ system timing controller, otherwise referred to as DAQ-STC for functions relevant to time. This series consists of both PCI and PXI boards.

DIO Series

The National Instruments Digital I/O or DIO Devices deliver digital output and input functions for computer-based systems. The DIO Devices come with varying specifications for current, voltage, and channel count, ensuring the user will be able to find the greatest model for their requirements. The NI DIO Devices additionally have programmable input filters, programmable power-up states, digital I/O watchdogs, and other useful features.

B Series

The National Instruments B Series is a Legacy Series of Multifunction DAQ Devices. This series is an affordable option for PCI data acquisition features, providing 16 SE/8 DI analog inputs, up to 2 analog outputs, 2 counters/timers, and digital triggers. The B Series devices are supported with NI-DAQmx driver software.

Analog Output Devices

The National Instruments Analog Output Devices can replace many different parts in a system due to their wide range of features. The devices can replace PID controllers, function generators, and low-speed arbitrary waveform generators. These devices offer a range of channel counts, output resolutions, and features. The NI Analog Output Devices allow the user to create applications like signal or sensor simulation, power supply control, and deterministic control.

M Series

The National Instruments M Series Multifunction Data Acquisition (DAQ) Devices come with as many as 80 analog input channels, four analog output channels maximum, as many as 48 lines of DIO, and two counters. There are several types of devices in the M Series: Bus-Powered Devices for USB, Industrial Devices, High-Accuracy Devices, Low-Cost Devices, and High-Speed Devices. All NI MI Series Devices can be utilized with NI-DAQmx 15.5 and later. 

Compact FieldPoint

The National Instruments Compact FieldPoint Modules have 8 or 16 channels and encompass a variety of module types. These include: Controllers, Analog Input and Output Modules, Multifunction I/O Modules, Relay Modules, Digital Input and Output Modules, and more. The Compact FieldPoint models provide dependable embedded operation for process equipment.

C Series

The National Instruments C Series Modules connect and support sensors and busses to take measurements, including but not limited to, temperature, audio frequency, resistance, and voltages. They are portable and useable in data acquisition applications.

MXI-Express x8 Series

The National Instruments MXI-Express x8 Series of Remote Control Modules and Bus Extension Modules enables users to control PXI and CompactPCI systems from a PC with a transparent MXI-Express link. The maximum throughput of the MXI-Express x8 devices is 3.2 GB/s. The MXI-Express x8 devices each have one port and either fiber-optic or copper cable support.

Universal Motion Interfaces

The National Instruments Universal Motion Interfaces (UMI) can be used with a cable to connect Motion Controllers to third-party power drives. The UMI-7764, for example, can be used with the NI-735x/734x/733x motion controllers. The NI UMI have additional motion features when compared to connector-only screw terminal blocks.

Industrial Controllers

The National Instruments Industrial Controllers have high levels of processing power and connectivity for applications, such as automated image processing, data acquisition, and control applications in harsh conditions. These controllers offer connectivity for communication and synchronization to numerous types of automation equipment.

NI Power Supplies

The NI industrial Power Supplies can be used for the following NI products: CompactRIO, CompactDAQ, Single-Board RIO, Smart Cameras, and touch panel computers. These Power Supplies have features such as a long life, large power reserves, a wide operating temperature range, and a small size.

PXI Data Storage Modules

The National Instruments PXI Data Storage Modules offer in-chassis data storage for PXI systems requiring high-speed read and write features. The PXI Data Storage Modules are available with varying module widths, drives, throughput, and storage capacity. These modules are well-suited for applications that require recording high-speed information, supplementing the PXI system controller’s storage capacity, or effortlessly transporting information between several test setups.

MXI-Express x4 Series

The National Instruments MXI-Express x4 Series allows users to control a PXI Express system from a x4 or higher PCI Express slot. With this series, the highest sustained throughput available is 832 MB/s with the PXIe-PCIe8372. The MXI-Express x4 models have either 1 or 2 cabled PCI Express links, an x4 lane width, and can be used with cables to 7 meters.

CVS-1450 Series

The National Instruments CVS-1450 Series of Compact Vision System models can work with a variety of automation devices, such as PLCs, relays, and robotics. These models have features such as Ethernet and RS232 ports, a high performance processor, and FireWire camera inputs.


The National Instruments FieldPoint Series consists of 2, 8, and 16 channel modular distributed I/O. The FieldPoint models are hot-swappable, auto-configurable, and come with programmable power-up states.

MXI-Express x16 Series

The National Instruments MXI-Express x16 Series modules can control PXI Express or CompactPCI Express chassis from a PC or a PXI Express or CompactPCI Express chassis. These modules can be used with a maximum cable length of 3 m. The MXI-Express x16 Series each have one or two ports.

PXI Vector Signal Generators

The National Instruments PXI Vector Signal Generators have the capability to create arbitrary modulated signals from typical modulation schemes and standard-specific waveforms for cellular communications and wireless connectivity. The NI PXI Vector Signal Generators can also create communications standards formats including DVB-H, WCDMA, GPS, and others. These PXI Vector Signal Generators additionally have low phase noise and exceptional dynamic range.

PXI Power Supplies

The National Instruments PXI Power Supplies provide programmable DC power for applications such as manufacturing test, design confirmation, and characterization. The PXI Power Supplies have two or three channels, and either 1 A, 3 A, or 6 A maximum current. Some of these Power Supplies have auxiliary power. 

MXI-3 Series

The National Instruments MXI-3 consists of Interface Boards and Modules which have compatibility for either copper or fiber-optic cabling and 200 m maximum cabling distance. MXI-3 functions as a PCI-to-PCI bridge to complete high performance, as well as hardware and software transparency. The MXI-3 Remote Controllers have a peak rate of 132 Mbytes/s. 

PCI CAN Interfaces

The National Instruments PCI CAN (Controller Area Network) Interfaces allow PCs to link to and communicate on a CAN bus. These interfaces utilize onboard transceivers for High-Speed/Flexible Data-Rate, Low-Speed/Fault-Tolerant, Single-Wire, and/or Software-Selectable CAN. The PCI CAN Interfaces have 1 or 2 ports and can be used with the NI-XNET driver software.

SC Express Series

The National Instruments SC Express Series of PXI Express data acquisition modules have integrated signal conditioning for measuring high-voltage analog input signals, strain gages, thermocouples, and more. The SC Express Series modules have 8 to 32 channels and varying sample rates and accuracy values. These NI modules additionally have advanced timing and synchronization capabilities.

PXI Digital Instruments

The PXI Digital Instruments by National Instruments can perform characterization and production tests for semiconductor devices with timing sets, as well as per channel pin parametric measurement unit. NI PXI Digital Instruments can create and obtain high-speed digital waveforms for sending information, assessing digital interfaces, or communicating with devices under test. The PXI Digital Instruments can be used with Digital Pattern Editor software.

NI Cables

National Instruments cables can be used for a variety of applications for connecting devices in a system or to a computer. Some NI cables are shielded for added protection, while others are unshielded and only viable for specific applications.

Digital Multimeter Devices

The National Instruments Digital Multimeter Devices or DMMs can complete various measurement types, including voltage, current, resistance, temperature, and frequency/period measurements, along with diode tests. The NI DMMs have varying features, such as AC/DC voltage, 2- or 4-wire resistance, frequency/period measurements, and more.

Temperature Input Devices

The Temperature Input Devices by National Instruments have the capability to perform temperature measurements from multiple thermocouple types. These tiny devices are compatible with compatible with J, K, R, S, T, N, E, and B thermocouples. These devices can be linked to a USB port so users can utilize their PC as a display and monitor information in real time.


The National Instruments NI ELVIS or NI Educational Laboratory Virtual Instrumentation Suite is a modular engineering instrument designed for universities. The NI ELVIS includes various common lab instruments such as a digital multimeter, oscilloscope, function generator, and more.

USB Multifunction Devices

The National Instruments USB Multifunction Devices feature digital I/O, analog I/O, and counter/timer functions and varying specifications for channel count, sample rate, and more. These devices are suitable for design verification, research, and laboratory automation.

PXI Chassis

The National Instruments PXI Chassis can hold PXI modules and link them with a high-performance backplane that provides synchronization and timing features. The NI PXI Chassis have compatibility with PXI hybrid, PXI Express, and PXI modules. The PXI Chassis feature AC or DC power options, with a combination of PXI and PXI Express module compatibility, and can hold as many as 18 modules.

Frame Grabbers

The National Instruments Frame Grabbers enable linking to multiple camera buses, such as Camera Link, IEEE 1394, USB3 Vision, and GigE Vision. The NI Frame Grabbers are best for scientific and machine vision applications which entail high-resolution and high-speed digital imagining. The Frame Grabbers have various features, such as pixel decimation, lookup tables, image scaling, and more.

CompactRIO Controllers

The CompactRIO models are high-performance processors with sensor specific I/O and toolchain integrated software that is ideally used for the Industrial Internet of Things (the IIoT). They are also used for monitoring and controlling applications. Regardless of the requirements, the cRIO gives direct sensor connectivity.


The National Instruments CompactDAQ is a method of data acquisition that uses connectivity and signal conditioning by meshing them into modular I/O for direct interfacing to sensors and signals. This system can use multiple measurement types at one time. The DAQ Controller utilizes Intel multicore processors to log data, as well as provides a way to store and remove data with ease.


The National Instruments SCC Series is a series of conditioning modules. Some of them provide analog input, while others provide a strain input signal. The modules can be cascaded on one channel to create a dual-stage. There are multiple types of modules within this series, including: attenuators, lowpass filters, and current output modules.

PXI Vector Signal Transceivers

The National Instruments PXI Vector Signal Transceivers (VST) are a combination of a vector signal analyzer and a vector signal generator with FPGA-based, real-time control and signal processing. These models can be utilized to assess many wireless and cellular standards. Additionally, VSTs can be effortlessly expanded to support multiple input, multiple output configurations.

S Series

The National Instruments S Series devices are Simultaneous Sampling Multifunction DAQs. They are ideal for applications, such as ultrasonic, ballistic, and radar transient recording and analysis. These devices are created with an analog-to-digital converter, which makes them superior to other devices regarding throughput and channel preciseness. There are pre/post-analog and digital trigger options. The S Series devices have analog and digital I/O, as well as counters and timers. 

DSA Devices

The National Instruments Dynamic Signal Acquisition (DSA) Devices deliver dynamic signal generation and acquisition in sound and vibration applications for PXI systems. These devices have features such as antialiasing filters, IEPE conditioning, and software-configurable AC/DC coupling. The DSA Devices are created especially for applications such as noise and vibration diagnostics, automotive test, audio test and measurement, and various others.


National Instruments SCXI is a high-performance signal conditioning and switching platform for measurement and automation systems. Whether you need to measure sensors or raw signals, generate voltages or currents, monitor digital lines, or route signals with switching, SCXI provides a single, integrated platform for all of your signal conditioning and switching needs. An SCXI system consists of multichannel signal conditioning modules installed in one or more rugged chassis. There is a wide selection of analog input, analog output, digital I/O, and switching modules to fit your application needs exactly. NI-DAQ driver software controls every aspect of your DAQ system from configuration, to programming in LabVIEW, to low-level operating system and device control.

NI-660x Series

The National Instruments NI-660x Series of Counter/Timer Modules can complete counter timer functions like period measurement, encoder position measurement, frequency measurement in PXI systems, and more. The NI-660x Series of Counter/Timer Modules has eight maximum 32-bit counters/timers. There are options for high-speed simultaneous DMA transfers, onboard high-precision oscillators, filtering, and industrial voltage ranges with isolation as well.

R Series

The National Instruments R Series of Multifunction Reconfigurable I/O Devices have user-defined, onboard processing for versatility of system timing and triggering. The NI R Series Devices utilize an FPGA that is user-programmable, which allows all analog and digital I/O channels to be configured for application-specific operation. When R Series Devices are utilized with the LabVIEW FPGA Module, users can create applications such as high-speed control, hardware-in-the-loop assessment, sensor simulation, and custom protocol communication.

RT Series

The National Instruments RT Series consists of PXI Controllers and Multifunction I/O Boards, which can be used with LabVIEW RT for a simple to utilize system for real-time applications. The RT Series DAQ Devices contain a processor board and a daughter board. The PXI systems can also be controlled by a host PC to run real-time, embedded LabVIEW RT applications. 

NI-73xx Series

The National Instruments NI-73xx Series of Stepper/Servo Motion Controllers offers completely programmable motion control for as many as four individual or coordinated axes of motion. There are dedicated motion I/O for limit and home switches and other I/O for standard functions. The NI-73xx Motion Control Modules are now considered obsolete.

PXI Controllers

The National Instruments PXI Controllers are a small, high-performance, embedded computer solution for PXI, PXI Express, and CompactPCI systems. The NI PXI Controllers offer up to 8 GB/s system throughput and 2 GB/s slot throughput maximum. The PXI Controllers have features such as a hard drive, RAM, an integrated CPU, Ethernet, video, serial, and various other types of peripheral I/O.

HSDIO Series

 The National Instruments High Speed Digital I/O (HSDIO) Devices have programmable voltage levels, 256 MB total onboard memory, and can be used with NI Digital Waveform Editor to generate, import, and edit digital waveforms. The HSDIO Series can be used for many applications, including complicated stimulus-response assessments or interfacing and device simulation.


NI-654x Series

The National Instruments NI-654x Series of Digital Waveform Generators/Analyzers have 32 channels with direction control for each channel. The Digital Waveform Generators/Analyzers can be used with the NI-HSDIO driver. Several digital instruments can be synchronized to create low-skew multichannel systems for interfacing to high-pin-count digital ICs and electronic devices. 

Timing and Synchronization Modules

The National Instruments Timing and Synchronization Modules allow a higher level of synchronization on the PXI platform with the use of high-precision triggering, high-stability clocks, and advanced signal routing. These modules can accomplish synchronization over a massive distance via IRIG-B, GPS, PPS, or IEEE 1588.  The Timing and Synchronization Modules also have skew reduction with differential star and star lines.

PXI Waveform Generators

The National Instruments PXI Waveform Generators are able to produce exact sine, triangle, and square waveforms. The PXI Waveform Generators are ideal for many different forms of mixed signal tests, such as: Consumer Electronics, Aerospace/Defense, and Automotive Testing. These models create standard function or user-defined arbitrary waveforms as a part of the PXI system.

MXI-Express x1 Series

The National Instruments MXI-Express x1 is a cabled PCI Express x1 link, which allows for the control of devices installed in a VXI, CompactRIO, PXI, or PXI Express chassis. MXI-Express x1 controls the device via laptops, workstations, desktop computers, or other types of host controllers with an ExpressCard, PCI, or PCI Express slot. The MXI-Express x1 devices have 1 or 2 ports and fiber-optic or copper cable support.

X Series

 The X Series Devices are some of the most advanced Multifunction DAQ Devices created by National Instruments. This series has devices available with NI-STC3 timing and synchronization technology, low cost, high-speed, simultaneous sampling, and other features to meet different requirements for challenging, control, measurement, and test applications. The NI X Series Devices have as many as 48 digital I/O, 4 analog outputs maximum, and as many as 32 analog inputs.


MXI-4 Series

 MXI-4 is a high-bandwidth link designed by National Instruments, which is transparent to drivers and software applications and offers the capability to utilize high-performance servers or desktop computers to control PXI systems. The MXI-4 link comprises a PCI-8331 or PCI-8336 board in a PC, linked with a cable to a PXI-8331 or PXI-8336 module in slot 1 of a PXI Chassis. MXI-4 also has support for 5 V and 3.3 V PCI, which is an improvement upon MXI-3.

PCI Digital Multimeters

The National Instruments PCI Digital Multimeter Devices (DMMs) can complete frequency/period, voltage, current, temperature, and resistance measurements, along with diode tests for PC-based systems. DMMs are equipped with 2- or 4-wire resistance, AC/DC voltage, and AC/DC current.

Serial Interface Devices

The Serial Interface Devices by National Instruments allow users to communicate with and control external serial hardware by utilizing asynchronous serial interfaces with numerous protocols. These devices can add as many as 16 serial ports to a system. Standard serial protocols are supported by these devices, including RS232, RS485, or RS422.

PCI Controllers

The National Instruments PCI Controllers are obsolete. This series consist of Motion Controllers such as the PCI-7334 and Switch Controllers like the PCI-4021. The Motion Controllers have the capability to control a maximum of 8 individual axes of motors, while the Switch Controllers control an SCXI-based switching system.

PXI Signal Insertion Modules

The PXI Signal Insertion Modules, otherwise referred to as Fault Insertion Units or FIUs by National Instruments, deliver a set of feedthrough channels which makes the switch transparent to the system when closed. The FIUs have electromechanical, reed, or FET relays and anywhere from 7 to 68 channels. The NI FIUs can be utilized for electronic reliability assessments or hardware-in-the-loop applications. 

PXI Multiplexer Modules

The National Instruments PXI Multiplexer Switch Modules can link numerous inputs to one input or output, to make wiring in automated test systems easier. The NI PXI Multiplexer Switch Modules are well-suited for high-channel-count applications that require linking measurement or signal generation devices to a variety of test points on devices or units under test. These modules can be utilized with NI Switch Executive software to create, build, and deploy a switching system.

PXI Relay Modules

The National Instruments PXI Relay Modules can link or unlink independent relays to make wiring easier in automated test systems. The PXI Relay Modules have numerous individual relays, including double-pole double-throw (DPDT), single-pole single-throw (SPST), and single-pole double-throw (SPDT) relays. To program the relays, the user can utilize the NI-SWITCH driver software.

PXI Matrix Switch Modules

The PXI Matrix Switch Modules by National Instruments are arranged in rows and columns and offer the utmost versatility for switching systems by enabling the user to link any channel to any other channel. The NI PXI Matrix Switch Modules utilize several types of relays, such as solid-state, field-effect transistor (FET), reed, and electromechanical armature relays. The variety of relay types available, along with different row and column numbers, allows the user to choose a module perfect for their specific application. 

PCI Multifunction Devices

The National Instruments PCI Multifunction Devices are a mixture of digital I/O, analog I/O, as well as counter/timer functions for computer-based systems in one device. These devices can be used for industry applications like design verification, automation, and research. The PCI Multifunction Devices have various sample rates, output rates, and channel counts to meet the requirements of many standard measurements.


The National Instruments FlexRIO products are a combination of massive, user-programmable FPGAs and high-performance RF, analog, and digital I/O. These instruments were created for scientists and engineers requiring the versatility of customized hardware without the usual cost. FlexRIO instruments can be programmed graphically with VHDL/Verilog or LabVIEW. 

PCI Waveform Generators

The National Instruments PCI Waveform Generator Devices can create user-defined and regular arbitrary waveforms. These Waveform Generators can create several types of accurate waveforms, such as triangle, sine, ramp, and square. The NI PCI Waveform Generator Devices are classified as mature or obsolete.

MXI-2 Series

The National Instruments MXI-2 Series is the second generation of the NI MXIbus models, with more signals than the first generation. The MXI-2 Series modules also have a higher data throughput with a maximum of 33 MB/s between two MXI-2 products. The MXI-2 interface kits connect a PCI-based computer or a PXI/CompactPCI Chassis to the VXIbus or VMEbus with the MXI-2 bus.

PXI Transfer Switch Modules

The National Instruments PXI Transfer Switch Modules have the capability to switch loads between two sources at frequencies to 40 GHz maximum. The NI PXI Transfer Switch Modules provide quick insertion times and minimal insertion loss to switch loads at RF frequencies. These modules have electromechanical relays, a PXI Hybrid bus connector, and varying scan rates and bandwidths.

PXI Resistor Modules

The PXI Resistor Modules by NI are ideal for simulating environmental settings in hardware-in-the-loop confirmation. These modules copy the behavior of resistance-based instruments by controlling a series of relays that alters resistance across every I/O connector channel. The PXI Resistor Modules have 5-18 channels and a 37-pin D-SUB connector on the front panel.

PXI Carrier Modules

The National Instruments PXI Carrier Modules can be utilized to result in enormous matrices with over 8,000 crosspoints in one PXI Chassis. These modules have the capacity to hold as many as six matrix modules for SwitchBlock. The SwitchBlock systems usually have a single A-type module and several B-type modules.

PXI Analog Input Modules

The National Instruments PXI Analog Input Modules deliver analog input signals for PXI systems and come with several ADCS. These modules also have built-in signal conditioning, sample rates from 5 kS/s per channel to 2 MS/s per channel, and 28 bits of resolution maximum. The NI PXI Analog Input Modules are well-suited for scalable measurement systems with a low or high number of channels. 

PXI Digital Multimeters

The PXI Digital Multimeters or DMMs by National Instruments can complete temperature, frequency/period, capacitance, current, inductance, voltage, resistance, and diode tests, in PXI systems. There are certain DMMs with an isolated, high-voltage digitizer that can obtain waveforms at sample rates of 1.8 MS/s maximum. The NI PXI Digital Multimeters have 6.5 or 7.5 digits of resolution and -300 V to 300 V or -1000 V to 1000 V DC voltage range.

PXI Source Measure Units

The National Instruments PXI Source Measure Units or SMUs offer accurate current or voltage sourcing and measurement features for PXI systems. The NI SMUs are created to decrease test time and improve versatility. The SMUs have 1-24 channels and most do not include auxiliary power. Some of the SMUs have the SourceAdapt feature, which can alter the transient behavior of the SMU, decrease settling time, and reduce overshoot.

SC Series

The National Instruments SC Series Modules come with features, such as 200 kS/s, 16-bit, and either 2 or 8 analog input channels. These modules have integrated signal conditioning for strain/bridge inputs.

PXI Analyzers

The National Instruments PXI Analyzers can complete vector signal analysis and/or spectrum analysis. The PXI Analyzers are suitable for many applications, including: RADAR test, wireless test, signal intelligence, microwave test, spectral monitoring, and more. Some models also have a LabVIEW-programmable FPGA that can be customized for advanced measurement applications.

PXI Amplifiers

The National Instruments PXI Amplifiers amplify tiny signals so they can be assessed and processed by other input modules in a PXI system. The PXI Amplifiers come with various types of amplification and signal conditioning. There are NI PXI Amplifiers with low-distortion and low-noise analog output, numerous input channels and integrated grounding, and other features.

PXI Attenuators

The National Instruments PXI Attenuators have the capability to attenuate RF signals to enhance the power preciseness of RF Signal Generators in low power ranges. The PXI Attenuators have two channels of programmable attenuation. The PXI-5695 PXI Attenuator has a frequency range from 50 MHz to 8 GHz.

PXI Signal Generator Modules

The National Instruments PXI Signal Generator Modules create ongoing wave signals or regular standard modulation formats, including pulse, AM, PM, and FM. The PXI Signal Generators provide the features of RF Signal Generators to the flexible, small PXI form factor. The NI PXI Signal Generators can be used to design automated test systems when combined with other PXI modular devices.