{"id":34696,"date":"2026-08-07T14:49:51","date_gmt":"2026-08-07T06:49:51","guid":{"rendered":"https:\/\/pxisource.com\/?post_type=product&#038;p=34696"},"modified":"2026-08-27T21:11:41","modified_gmt":"2026-08-27T13:11:41","slug":"ni-7931","status":"publish","type":"product","link":"https:\/\/pxisource.com\/ru\/product\/ni-7931\/","title":{"rendered":"NI-7931"},"content":{"rendered":"<h3>Product Introduction<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI\u20117931R<\/strong>, commonly searched as <strong>NI\u20117931<\/strong>, is a <strong>stand-alone Controller for FlexRIO<\/strong> that combines an embedded real-time controller, a user-programmable Kintex\u20117 FPGA and support for interchangeable FlexRIO adapter modules.\n<\/p>\n<p>\nThe NI\u20117931R features a <strong>Xilinx Kintex\u20117 XC7K325T FPGA<\/strong>, <strong>2 GB of FPGA-accessible DRAM<\/strong> and a 32-bit NI Linux Real-Time controller. It allows engineers to perform deterministic signal processing, custom triggering, protocol implementation and high-speed data movement without requiring a separate PXI chassis or embedded PXI controller.\n<\/p>\n<p>\nWhen paired with a compatible FlexRIO adapter module, the NI\u20117931R can be configured for high-speed digitization, waveform generation, digital I\/O, IF and RF processing, custom communication interfaces, semiconductor testing, electronic validation and embedded measurement applications.\n<\/p>\n<h3>Product Overview<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>National Instruments NI\u20117931R<\/strong> belongs to the NI\u2011793xR Controller for FlexRIO family.\n<\/p>\n<p>\nUnlike a conventional PXI FlexRIO FPGA module, the NI\u20117931R is a stand-alone device with its own real-time processor, network interface, storage connections, FPGA and adapter module connector.\n<\/p>\n<p>\nA typical system architecture is:\n<\/p>\n<p>\n<strong>Sensor or DUT \u2194 FlexRIO Adapter Module \u2194 NI\u20117931R FPGA \u2194 Real-Time Controller \u2194 Ethernet Host<\/strong>\n<\/p>\n<p>\nThe FlexRIO adapter module provides the application-specific analog, digital or RF interface. The Kintex\u20117 FPGA performs deterministic processing, while the embedded real-time controller manages sequencing, communication, data logging and system-level control.\n<\/p>\n<h3>Key Features<\/h3>\n<h4>Stand-Alone Controller for FlexRIO<\/h4>\n<p>\nThe NI\u20117931R integrates the main components required for an embedded FlexRIO measurement or control system into a stand-alone enclosure.\n<\/p>\n<p>\nThe controller combines:\n<\/p>\n<ul>\n<li>Embedded real-time processor<\/li>\n<li>\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 NI Linux Real-Time<\/li>\n<li>User-programmable Kintex\u20117 FPGA<\/li>\n<li>2 GB of FPGA-accessible DRAM<\/li>\n<li>FlexRIO adapter module connector<\/li>\n<li>1 Gigabit Ethernet<\/li>\n<li>USB host and USB device ports<\/li>\n<li>MicroSD storage interface<\/li>\n<li>External trigger and reference clock connections<\/li>\n<\/ul>\n<p>\nThis architecture reduces the need for a separate PXI chassis and controller when the application requires one FlexRIO adapter module and a compact stand-alone deployment.\n<\/p>\n<h4>Kintex\u20117 XC7K325T FPGA<\/h4>\n<p>\nThe NI\u20117931R includes a <strong>Xilinx Kintex\u20117 XC7K325T FPGA<\/strong> for user-programmable, hardware-level processing.\n<\/p>\n<p>\nThe FPGA provides:\n<\/p>\n<ul>\n<li>50,950 FPGA slices<\/li>\n<li>840 DSP slices<\/li>\n<li>16,020 kbit of block RAM<\/li>\n<li>Deterministic parallel processing<\/li>\n<li>Custom timing and triggering<\/li>\n<li>Application-specific protocol implementation<\/li>\n<li>High-throughput signal processing<\/li>\n<li>Direct communication with the installed adapter module<\/li>\n<\/ul>\n<p>\nThe FPGA design determines much of the instrument behavior, allowing the NI\u20117931R to perform functions that may not be available in conventional fixed-function instruments.\n<\/p>\n<h4>Embedded NI Linux Real-Time Controller<\/h4>\n<p>\nThe NI\u20117931R includes an embedded controller running <strong>32-bit NI Linux Real-Time<\/strong>.\n<\/p>\n<p>\nThe real-time processor can manage:\n<\/p>\n<ul>\n<li>Application sequencing<\/li>\n<li>\u0421\u0435\u0442\u0435\u0432\u0430\u044f \u0441\u0432\u044f\u0437\u044c<\/li>\n<li>System configuration<\/li>\n<li>\u0420\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u0446\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445<\/li>\n<li>File management<\/li>\n<li>FPGA communication<\/li>\n<li>Error handling<\/li>\n<li>Watchdog functions<\/li>\n<li>Communication with a remote host computer<\/li>\n<\/ul>\n<p>\nThe real-time controller and FPGA operate together: the FPGA handles time-critical hardware functions, while the processor handles system-level tasks and communication.\n<\/p>\n<h4>2 GB FPGA-Accessible DRAM<\/h4>\n<p>\nThe NI\u20117931R provides <strong>2 GB of onboard DRAM<\/strong> that can be accessed by the FPGA.\n<\/p>\n<p>\nThis memory can support applications requiring:\n<\/p>\n<ul>\n<li>Large waveform buffering<\/li>\n<li>Pretrigger and post-trigger acquisition<\/li>\n<li>High-speed data capture<\/li>\n<li>Digital pattern storage<\/li>\n<li>Signal generation buffers<\/li>\n<li>Temporary data storage<\/li>\n<li>Data reordering<\/li>\n<li>FPGA-based record processing<\/li>\n<\/ul>\n<p>\nFPGA-accessible DRAM is particularly useful when the adapter module produces or consumes data faster than the real-time controller or network can continuously transfer it.\n<\/p>\n<h4>High-Speed FPGA-to-Host Data Transfer<\/h4>\n<p>\nThe internal architecture supports FPGA-to-host data transfer rates of up to <strong>200 MB\/s in a single direction<\/strong> and up to <strong>150 MB\/s during bidirectional operation<\/strong>.\n<\/p>\n<p>\nActual application throughput can depend on the FPGA design, DMA configuration, real-time processing load, data structure and selected adapter module.\n<\/p>\n<h4>1 Gigabit Ethernet Interface<\/h4>\n<p>\nThe NI\u20117931R includes a <strong>1 Gigabit Ethernet<\/strong> interface for network configuration, deployment, monitoring and communication with a host computer.\n<\/p>\n<p>\nEthernet connectivity allows the controller to be installed near the DUT or measurement point while the operator interface and supervisory application run on a remote computer.\n<\/p>\n<h4>USB Host and USB Device Ports<\/h4>\n<p>\nThe front panel includes both USB host and USB device connections.\n<\/p>\n<p>\nThe USB host port can support compatible external devices and storage media, while the USB device connection can be used during device configuration and service operations according to the supported NI workflow.\n<\/p>\n<p>\nThe documented real-time processor-to-USB external storage transfer rate is up to 60 MB\/s under the specified test conditions.\n<\/p>\n<h4>MicroSD Storage Support<\/h4>\n<p>\nThe NI\u20117931R includes a microSD interface for compatible external storage.\n<\/p>\n<p>\nMicroSD storage can be used for application files, data logging, configuration files and other supported real-time controller storage requirements.\n<\/p>\n<p>\nDocumented transfer rates are up to 12 MB\/s for reading and 9 MB\/s for writing under the specified conditions.\n<\/p>\n<h4>External Trigger Input<\/h4>\n<p>\nThe front-panel trigger connection allows an external event to participate in FPGA-based triggering and synchronization.\n<\/p>\n<p>\nThe trigger can be incorporated into a custom FPGA application for functions such as:\n<\/p>\n<ul>\n<li>Starting an acquisition<\/li>\n<li>Starting waveform generation<\/li>\n<li>Capturing an event<\/li>\n<li>Synchronizing with external equipment<\/li>\n<li>Controlling a deterministic test sequence<\/li>\n<\/ul>\n<h4>External Reference Clock Input<\/h4>\n<p>\nThe REF IN connection allows the NI\u20117931R clocking architecture to use a supported external reference.\n<\/p>\n<p>\nThis is useful when the FlexRIO system must operate from a common timing source or coordinate its FPGA processing with other measurement and test equipment.\n<\/p>\n<h4>Flexible FPGA Clocking Architecture<\/h4>\n<p>\nThe NI\u20117931R includes dedicated clocking resources for FPGA and adapter module applications.\n<\/p>\n<p>\nAvailable clock resources include:\n<\/p>\n<ul>\n<li>10 MHz reference clock<\/li>\n<li>40 MHz onboard clock<\/li>\n<li>100 MHz clock<\/li>\n<li>200 MHz clock<\/li>\n<li>DRAM clock<\/li>\n<li>Adapter module synchronization clock resources<\/li>\n<\/ul>\n<p>\nThe appropriate clock depends on the selected adapter module, FPGA design, required sample rate and timing architecture.\n<\/p>\n<h3>Technical Specifications<\/h3>\n<table>\n<tr>\n<th>\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\n<th>\u0421\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f<\/th>\n<\/tr>\n<tr>\n<td width=\"280\">Product Type<\/td>\n<td>Stand-Alone Controller for FlexRIO<\/td>\n<\/tr>\n<tr>\n<td>\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\n<td>NI\u20117931R \/ NI\u20117931<\/td>\n<\/tr>\n<tr>\n<td>Manufacturer<\/td>\n<td>\u041d\u0430\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b<\/td>\n<\/tr>\n<tr>\n<td>Platform<\/td>\n<td>NI FlexRIO<\/td>\n<\/tr>\n<tr>\n<td>Form Factor<\/td>\n<td>Stand-Alone Embedded Controller<\/td>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td><strong>Xilinx Kintex\u20117 XC7K325T<\/strong><\/td>\n<\/tr>\n<tr>\n<td>FPGA Slices<\/td>\n<td>50,950<\/td>\n<\/tr>\n<tr>\n<td>FPGA DSP Slices<\/td>\n<td>840<\/td>\n<\/tr>\n<tr>\n<td>FPGA Block RAM<\/td>\n<td>16,020 kbit<\/td>\n<\/tr>\n<tr>\n<td>Onboard FPGA DRAM<\/td>\n<td><strong>2 GB<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Real-Time Operating System<\/td>\n<td>NI Linux Real-Time, 32-Bit<\/td>\n<\/tr>\n<tr>\n<td>FPGA-to-Host Transfer Rate<\/td>\n<td>Up to 200 MB\/s, Single Direction<\/td>\n<\/tr>\n<tr>\n<td>Bidirectional FPGA-to-Host Transfer Rate<\/td>\n<td>Up to 150 MB\/s<\/td>\n<\/tr>\n<tr>\n<td>Network Interface<\/td>\n<td>1 Gigabit Ethernet<\/td>\n<\/tr>\n<tr>\n<td>USB Interfaces<\/td>\n<td>USB Host and USB Device Ports<\/td>\n<\/tr>\n<tr>\n<td>External Storage<\/td>\n<td>USB Storage and MicroSD<\/td>\n<\/tr>\n<tr>\n<td>USB External Storage Transfer Rate<\/td>\n<td>Up to 60 MB\/s<\/td>\n<\/tr>\n<tr>\n<td>MicroSD Transfer Rate<\/td>\n<td>Up to 12 MB\/s Read and 9 MB\/s Write<\/td>\n<\/tr>\n<tr>\n<td>External Trigger<\/td>\n<td>TRIG Front-Panel Connection<\/td>\n<\/tr>\n<tr>\n<td>Reference Clock Input<\/td>\n<td>REF IN Front-Panel Connection<\/td>\n<\/tr>\n<tr>\n<td>Default FPGA Clock<\/td>\n<td>40 MHz Onboard Clock<\/td>\n<\/tr>\n<tr>\n<td>Additional FPGA Clock Resources<\/td>\n<td>10 MHz Reference, 100 MHz, 200 MHz and DRAM Clock<\/td>\n<\/tr>\n<tr>\n<td>FlexRIO Adapter Connection<\/td>\n<td>One FlexRIO Adapter Module Connector<\/td>\n<\/tr>\n<tr>\n<td>Calibration Requirement<\/td>\n<td>Controller Hardware Does Not Require Calibration<\/td>\n<\/tr>\n<tr>\n<td>Primary Applications<\/td>\n<td>Embedded Measurement, FPGA Processing, Custom Instrumentation and Real-Time Test<\/td>\n<\/tr>\n<\/table>\n<h3>How Does the NI\u20117931R Work?<\/h3>\n<p>\nThe NI\u20117931R combines three main processing layers:\n<\/p>\n<ol>\n<li>The FlexRIO adapter module provides the application-specific analog, digital, RF or communication interface.<\/li>\n<li>The Kintex\u20117 FPGA performs deterministic data acquisition, generation, triggering and signal processing.<\/li>\n<li>The NI Linux Real-Time controller manages system control, network communication, data logging and host interaction.<\/li>\n<\/ol>\n<p>\nA simplified data path is:\n<\/p>\n<p>\n<strong>Signal or DUT \u2192 FlexRIO Adapter Module \u2192 Kintex\u20117 FPGA \u2192 DMA \u2192 Real-Time Application \u2192 Ethernet or Storage<\/strong>\n<\/p>\n<p>\nFor signal generation, the data path can operate in the opposite direction:\n<\/p>\n<p>\n<strong>Real-Time Application or FPGA Memory \u2192 FPGA Processing \u2192 FlexRIO Adapter Module \u2192 DUT<\/strong>\n<\/p>\n<p>\nThis distributed architecture assigns time-critical functions to the FPGA and higher-level system functions to the real-time processor.\n<\/p>\n<h3>NI\u20117931R Is a Controller for FlexRIO<\/h3>\n<p>\nThe NI\u20117931R is not a complete measurement instrument by itself because it does not include application-specific analog or digital I\/O.\n<\/p>\n<p>\nA complete measurement system normally requires:\n<\/p>\n<ul>\n<li>NI\u20117931R Controller for FlexRIO<\/li>\n<li>Compatible FlexRIO adapter module<\/li>\n<li>Appropriate adapter module cables and accessories<\/li>\n<li>External DC power supply<\/li>\n<li>Ethernet connection or supported USB configuration connection<\/li>\n<li>Compatible NI FlexRIO software<\/li>\n<li>LabVIEW Real-Time and LabVIEW FPGA development environment when required<\/li>\n<li>Application-specific FPGA and real-time software<\/li>\n<\/ul>\n<p>\nUnlike PXI-based FlexRIO FPGA modules, the NI\u20117931R does not require a <a href=\"https:\/\/pxisource.com\/ru\/product-category\/%d0%bd%d0%b8\/pxi-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d1%81\/pxi-chassis\/\">PXI or PXIe chassis<\/a> for stand-alone operation.\n<\/p>\n<h3>Stand-Alone FlexRIO Architecture<\/h3>\n<p>\nThe stand-alone architecture allows the NI\u20117931R to operate near the sensor, DUT or test fixture without a PXI chassis.\n<\/p>\n<p>\nA typical remote deployment is:\n<\/p>\n<p>\n<strong>Remote Host \u2194 Ethernet \u2194 NI\u20117931R Real-Time Controller \u2194 FPGA \u2194 FlexRIO Adapter Module \u2194 DUT<\/strong>\n<\/p>\n<p>\nThis architecture is useful when:\n<\/p>\n<ul>\n<li>The measurement hardware must be installed near the DUT<\/li>\n<li>A PXI chassis would be too large for the deployment<\/li>\n<li>Real-time processing must continue without continuous host control<\/li>\n<li>Network-based monitoring is required<\/li>\n<li>The system uses one FlexRIO adapter module<\/li>\n<li>Deterministic FPGA processing is required at the measurement point<\/li>\n<\/ul>\n<h3>Real-Time Processor and FPGA Integration<\/h3>\n<p>\nThe embedded real-time processor and FPGA communicate through DMA channels, interrupts, controls and indicators.\n<\/p>\n<p>\nThe FPGA can continuously acquire or generate data while the real-time application performs:\n<\/p>\n<ul>\n<li>Test sequencing<\/li>\n<li>Configuration management<\/li>\n<li>\u0421\u0435\u0442\u0435\u0432\u0430\u044f \u0441\u0432\u044f\u0437\u044c<\/li>\n<li>\u0420\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u0446\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445<\/li>\n<li>File transfer<\/li>\n<li>Error recovery<\/li>\n<li>System health monitoring<\/li>\n<li>Operator interface communication<\/li>\n<\/ul>\n<p>\nKeeping deterministic operations in FPGA hardware helps prevent operating-system scheduling from affecting time-critical signal processing.\n<\/p>\n<h3>FPGA-Based Signal Processing<\/h3>\n<p>\nThe Kintex\u20117 FPGA can process multiple operations in parallel with deterministic timing.\n<\/p>\n<p>\nPotential FPGA functions include:\n<\/p>\n<ul>\n<li>Digital filtering<\/li>\n<li>Fast Fourier transforms<\/li>\n<li>Decimation and interpolation<\/li>\n<li>Digital downconversion<\/li>\n<li>Digital upconversion<\/li>\n<li>Pattern recognition<\/li>\n<li>Custom triggering<\/li>\n<li>Protocol processing<\/li>\n<li>\u0417\u0430\u043c\u043a\u043d\u0443\u0442\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f<\/li>\n<li>Real-time data reduction<\/li>\n<li>Channelization<\/li>\n<li>Waveform generation<\/li>\n<\/ul>\n<p>\nThe available FPGA resources and achievable clock rate depend on the complexity of the compiled FPGA design.\n<\/p>\n<h3>FPGA-Accessible DRAM Applications<\/h3>\n<p>\nThe 2 GB onboard DRAM provides a large buffer directly accessible from FPGA logic.\n<\/p>\n<p>\nIt can be used for:\n<\/p>\n<ul>\n<li>High-speed waveform capture<\/li>\n<li>Long digital pattern playback<\/li>\n<li>Triggered record acquisition<\/li>\n<li>Pretrigger history storage<\/li>\n<li>Arbitrary waveform buffering<\/li>\n<li>Intermediate signal-processing storage<\/li>\n<li>Packet buffering<\/li>\n<li>Data-rate matching between FPGA and host<\/li>\n<\/ul>\n<p>\nUsing onboard DRAM can help prevent temporary differences between adapter module data rates and host transfer rates from immediately interrupting an acquisition.\n<\/p>\n<h3>FlexRIO Adapter Module Integration<\/h3>\n<p>\nThe function of the NI\u20117931R depends heavily on the installed FlexRIO adapter module.\n<\/p>\n<p>\nCompatible adapter module categories can include:\n<\/p>\n<ul>\n<li>High-speed digitizer adapters<\/li>\n<li>Oscilloscope adapter modules<\/li>\n<li>Digital I\/O adapter modules<\/li>\n<li>Signal generator adapter modules<\/li>\n<li>IF and RF adapter modules<\/li>\n<li>Camera Link interfaces<\/li>\n<li>Custom FlexRIO adapter modules<\/li>\n<\/ul>\n<p>\nThe adapter module supplies the physical I\/O, signal conditioning, converter architecture and connector interface. The NI\u20117931R supplies the FPGA, real-time processor, memory and system communication.\n<\/p>\n<p>\nAlways verify the exact NI adapter module compatibility and required FlexRIO driver version before purchasing.\n<\/p>\n<h3>Custom FlexRIO Adapter Modules<\/h3>\n<p>\nFor specialized applications, engineers can develop custom adapter modules using supported FlexRIO module development resources.\n<\/p>\n<p>\nA custom adapter can provide application-specific:\n<\/p>\n<ul>\n<li>Analog front ends<\/li>\n<li>Digital interfaces<\/li>\n<li>Signal conditioning<\/li>\n<li>Communication transceivers<\/li>\n<li>Power and control interfaces<\/li>\n<li>Sensor connections<\/li>\n<\/ul>\n<p>\nCustom adapter development requires careful attention to the FlexRIO connector specification, electrical limits, power requirements, FPGA interface and supported development tools.\n<\/p>\n<h3>Clocking and Synchronization<\/h3>\n<p>\nThe NI\u20117931R provides dedicated FPGA clocking hardware for flexible timing configurations.\n<\/p>\n<p>\nThe 40 MHz onboard clock is the default FPGA clock, while additional 100 MHz, 200 MHz, reference and DRAM clock resources support application-specific processing.\n<\/p>\n<p>\nThe REF IN connection allows the system to use a supported external reference for synchronization with other instruments or test equipment.\n<\/p>\n<p>\nClock selection should consider:\n<\/p>\n<ul>\n<li>Adapter module sample rate<\/li>\n<li>FPGA processing requirements<\/li>\n<li>External instrument synchronization<\/li>\n<li>Clock stability<\/li>\n<li>Trigger timing<\/li>\n<li>Data-converter requirements<\/li>\n<li>FPGA timing closure<\/li>\n<\/ul>\n<h3>Custom FPGA Triggering<\/h3>\n<p>\nTrigger logic can be implemented directly in the Kintex\u20117 FPGA.\n<\/p>\n<p>\nPossible trigger functions include:\n<\/p>\n<ul>\n<li>Analog threshold trigger when supported by the adapter<\/li>\n<li>Digital edge trigger<\/li>\n<li>Pattern trigger<\/li>\n<li>Protocol-specific trigger<\/li>\n<li>Multi-stage trigger<\/li>\n<li>Frequency-domain trigger<\/li>\n<li>Sequence trigger<\/li>\n<li>Timing-qualified event trigger<\/li>\n<li>External front-panel trigger<\/li>\n<\/ul>\n<p>\nThe exact trigger capability depends on the installed adapter module and FPGA design.\n<\/p>\n<h3>Network-Based Measurement and Control<\/h3>\n<p>\nThe 1 Gigabit Ethernet interface allows the NI\u20117931R to communicate with a remote development or supervisory computer.\n<\/p>\n<p>\nNetwork-based applications can include:\n<\/p>\n<ul>\n<li>Remote configuration<\/li>\n<li>Application deployment<\/li>\n<li>System monitoring<\/li>\n<li>Measurement result transfer<\/li>\n<li>Distributed test control<\/li>\n<li>Remote data logging<\/li>\n<li>Device health monitoring<\/li>\n<\/ul>\n<p>\nThe FPGA and real-time application can continue performing deployed functions independently of the host interface, depending on how the application is designed.\n<\/p>\n<h3>Data Logging and External Storage<\/h3>\n<p>\nThe embedded real-time controller can log processed data and test results to supported storage devices.\n<\/p>\n<p>\nStorage options include:\n<\/p>\n<ul>\n<li>Internal nonvolatile storage<\/li>\n<li>Compatible USB external storage<\/li>\n<li>Compatible microSD media<\/li>\n<li>Network-based storage through the real-time application<\/li>\n<\/ul>\n<p>\nThe required storage method should be selected according to data rate, recording duration, environmental requirements and serviceability.\n<\/p>\n<h3>Embedded Measurement Applications<\/h3>\n<p>\nThe stand-alone form factor makes the NI\u20117931R suitable for embedded measurement systems that require FPGA processing close to the signal source.\n<\/p>\n<p>\nPotential applications include:\n<\/p>\n<ul>\n<li>Remote sensor processing<\/li>\n<li>Embedded data acquisition<\/li>\n<li>\u041c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f<\/li>\n<li>Machine monitoring<\/li>\n<li>Prototype control systems<\/li>\n<li>Distributed measurement<\/li>\n<li>Field-deployed testing<\/li>\n<li>Custom research instrumentation<\/li>\n<\/ul>\n<h3>Hardware-in-the-Loop Testing<\/h3>\n<p>\nThe FPGA and real-time processor architecture can support hardware-in-the-loop applications requiring deterministic signal generation, acquisition and response processing.\n<\/p>\n<p>\nDepending on the selected adapter module, the NI\u20117931R can:\n<\/p>\n<ul>\n<li>Generate simulated sensor or digital signals<\/li>\n<li>Acquire DUT outputs<\/li>\n<li>Execute FPGA-based response models<\/li>\n<li>Implement fault insertion logic<\/li>\n<li>Perform deterministic pass\/fail decisions<\/li>\n<li>Communicate results to a host test application<\/li>\n<\/ul>\n<h3>Semiconductor and Electronic Validation<\/h3>\n<p>\nWhen combined with an appropriate digital or analog adapter module, the NI\u20117931R can be used for semiconductor and electronic design validation.\n<\/p>\n<p>\nPotential functions include:\n<\/p>\n<ul>\n<li>Custom digital protocol testing<\/li>\n<li>FPGA and ASIC interface validation<\/li>\n<li>High-speed waveform acquisition<\/li>\n<li>Device stimulus generation<\/li>\n<li>Real-time pattern analysis<\/li>\n<li>Electronic subsystem testing<\/li>\n<li>Prototype characterization<\/li>\n<\/ul>\n<h3>Research and Custom Instrumentation<\/h3>\n<p>\nThe NI\u20117931R is useful when researchers need an instrument whose behavior can be defined through FPGA and real-time software.\n<\/p>\n<p>\nInstead of being limited to a fixed measurement architecture, engineers can combine an adapter module with custom FPGA logic to build application-specific acquisition, generation, processing and control systems.\n<\/p>\n<h3>System Integration Considerations<\/h3>\n<p>\nBefore selecting the NI\u20117931R, verify the complete application requirements.\n<\/p>\n<ul>\n<li>Required analog, digital, RF or communication interface<\/li>\n<li>Compatible FlexRIO adapter module<\/li>\n<li>Required FPGA resources<\/li>\n<li>Required DSP resources<\/li>\n<li>Required FPGA memory capacity<\/li>\n<li>Continuous and burst data rates<\/li>\n<li>Real-time processing requirements<\/li>\n<li>Ethernet transfer requirements<\/li>\n<li>Storage capacity and speed<\/li>\n<li>External clock and trigger requirements<\/li>\n<li>Power supply requirements<\/li>\n<li>Mechanical mounting and cooling<\/li>\n<li>NI FlexRIO software compatibility<\/li>\n<li>LabVIEW Real-Time compatibility<\/li>\n<li>LabVIEW FPGA compatibility<\/li>\n<\/ul>\n<h3>Power and Cooling Considerations<\/h3>\n<p>\nThe NI\u20117931R requires a suitable external DC power source and adequate airflow or mounting conditions.\n<\/p>\n<p>\nBefore installation:\n<\/p>\n<ul>\n<li>Verify the required input voltage and power capacity<\/li>\n<li>Use the specified power connector and wiring method<\/li>\n<li>Allow adequate clearance for cooling<\/li>\n<li>Do not block ventilation openings<\/li>\n<li>Consider the power consumption of the installed adapter module<\/li>\n<li>Follow the mounting orientation and environmental limits in the NI documentation<\/li>\n<\/ul>\n<h3>Troubleshooting NI\u20117931R Systems<\/h3>\n<p>\nIf an NI\u20117931R system does not operate correctly, check the controller, FPGA, adapter module, software and network configuration.\n<\/p>\n<ol>\n<li>Verify the external DC power supply and wiring.<\/li>\n<li>Check the Power and Status LEDs.<\/li>\n<li>Confirm the Ethernet cable and network settings.<\/li>\n<li>Verify that the controller is detected in NI Measurement &#038; Automation Explorer.<\/li>\n<li>Confirm that compatible NI FlexRIO software is installed.<\/li>\n<li>Verify the LabVIEW Real-Time and LabVIEW FPGA versions.<\/li>\n<li>Check that the adapter module is fully installed.<\/li>\n<li>Confirm adapter module compatibility with the NI\u20117931R.<\/li>\n<li>Verify the FPGA bitfile and adapter module CLIP configuration.<\/li>\n<li>Check DMA channels, interrupts, controls and indicators.<\/li>\n<li>Verify external clock and trigger configuration.<\/li>\n<li>Check USB or microSD storage compatibility.<\/li>\n<li>Review application error logs and watchdog behavior.<\/li>\n<\/ol>\n<h3>How to Choose a Controller for FlexRIO<\/h3>\n<p>\nBefore purchasing a Controller for FlexRIO, determine:\n<\/p>\n<ul>\n<li>Required FPGA size<\/li>\n<li>Required number of DSP slices<\/li>\n<li>Required FPGA block RAM<\/li>\n<li>Required onboard DRAM<\/li>\n<li>Required adapter module<\/li>\n<li>Need for high-speed serial SFP+ interfaces<\/li>\n<li>Required network architecture<\/li>\n<li>Real-time processing requirements<\/li>\n<li>External storage requirements<\/li>\n<li>Clocking and synchronization requirements<\/li>\n<li>Mechanical and environmental requirements<\/li>\n<li>Software and driver compatibility<\/li>\n<\/ul>\n<h3>Industries<\/h3>\n<ul>\n<li>\u0422\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u043b\u0443\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u0438\u043a\u043e\u0432<\/li>\n<li>Electronic Design Validation<\/li>\n<li>\u0410\u044d\u0440\u043e\u043a\u043e\u0441\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0438 \u043e\u0431\u043e\u0440\u043e\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u043e\u0441\u0442\u044c<\/li>\n<li>Telecommunications<\/li>\n<li>\u041f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0430\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0430\u0446\u0438\u044f<\/li>\n<li>Automated Test Equipment<\/li>\n<li>Electronics Manufacturing<\/li>\n<li>Scientific Research<\/li>\n<li>Embedded Systems<\/li>\n<li>Research and Development<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<h4>Embedded Data Acquisition<\/h4>\n<p>\nThe NI\u20117931R can acquire and process data close to the signal source when paired with a compatible digitizer or measurement adapter module.\n<\/p>\n<h4>Custom Digital Instrumentation<\/h4>\n<p>\nA compatible digital adapter module and FPGA design can create custom protocol, pattern-generation and digital acquisition systems.\n<\/p>\n<h4>Real-Time Signal Processing<\/h4>\n<p>\nThe Kintex\u20117 FPGA can perform deterministic filtering, triggering, transforms and data reduction before transferring information to the real-time controller.\n<\/p>\n<h4>Hardware-in-the-Loop Testing<\/h4>\n<p>\nThe combined FPGA and real-time architecture can support deterministic simulation, stimulus generation and DUT response processing.\n<\/p>\n<h4>Remote Measurement Systems<\/h4>\n<p>\nGigabit Ethernet connectivity allows the NI\u20117931R to be deployed near a DUT and controlled from a remote host.\n<\/p>\n<h4>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432<\/h4>\n<p>\nUser-programmable FPGA resources allow engineers to implement timing, framing, decoding and application-specific communication logic.\n<\/p>\n<h3>NI\u20117931R vs NI\u20117932R<\/h3>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>NI\u20117931R<\/th>\n<th>NI\u20117932R<\/th>\n<\/tr>\n<tr>\n<td>Form Factor<\/td>\n<td>Stand-Alone<\/td>\n<td>Stand-Alone<\/td>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td>Kintex\u20117 XC7K325T<\/td>\n<td>Kintex\u20117 XC7K325T<\/td>\n<\/tr>\n<tr>\n<td>FPGA Slices<\/td>\n<td>50,950<\/td>\n<td>50,950<\/td>\n<\/tr>\n<tr>\n<td>DSP Slices<\/td>\n<td>840<\/td>\n<td>840<\/td>\n<\/tr>\n<tr>\n<td>FPGA DRAM<\/td>\n<td>2 GB<\/td>\n<td>2 GB<\/td>\n<\/tr>\n<tr>\n<td>High-Speed Serial SFP+ Ports<\/td>\n<td><strong>No<\/strong><\/td>\n<td><strong>\u0414\u0430<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Best For<\/td>\n<td>Standard Stand-Alone FlexRIO Applications<\/td>\n<td>Applications Requiring High-Speed Serial Communication<\/td>\n<\/tr>\n<\/table>\n<p>\nThe NI\u20117931R and NI\u20117932R provide similar FPGA and memory resources. The NI\u20117932R is the more appropriate choice when the application requires integrated high-speed serial SFP+ connectivity.\n<\/p>\n<h3>NI\u20117931R vs NI\u20117935R<\/h3>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>NI\u20117931R<\/th>\n<th>NI\u20117935R<\/th>\n<\/tr>\n<tr>\n<td>Form Factor<\/td>\n<td>Stand-Alone<\/td>\n<td>Stand-Alone<\/td>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td>Kintex\u20117 XC7K325T<\/td>\n<td>Kintex\u20117 XC7K410T<\/td>\n<\/tr>\n<tr>\n<td>FPGA Slices<\/td>\n<td>50,950<\/td>\n<td>63,550<\/td>\n<\/tr>\n<tr>\n<td>DSP Slices<\/td>\n<td>840<\/td>\n<td>1,540<\/td>\n<\/tr>\n<tr>\n<td>FPGA Block RAM<\/td>\n<td>16,020 kbit<\/td>\n<td>28,620 kbit<\/td>\n<\/tr>\n<tr>\n<td>FPGA DRAM<\/td>\n<td>2 GB<\/td>\n<td>2 GB<\/td>\n<\/tr>\n<tr>\n<td>High-Speed Serial SFP+ Ports<\/td>\n<td>No<\/td>\n<td>\u0414\u0430<\/td>\n<\/tr>\n<tr>\n<td>Best For<\/td>\n<td>Moderate FPGA Processing Requirements<\/td>\n<td>More Complex FPGA and High-Speed Serial Applications<\/td>\n<\/tr>\n<\/table>\n<p>\nThe NI\u20117935R provides a larger FPGA, more DSP resources, more block RAM and high-speed serial interfaces. The NI\u20117931R can be a more practical choice when the application does not require those additional resources.\n<\/p>\n<h3>NI\u20117931R vs PXIe FlexRIO FPGA Modules<\/h3>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>NI\u20117931R<\/th>\n<th>PXIe FlexRIO FPGA Module<\/th>\n<\/tr>\n<tr>\n<td>Form Factor<\/td>\n<td><strong>Stand-Alone<\/strong><\/td>\n<td>PXI Express Module<\/td>\n<\/tr>\n<tr>\n<td>Real-Time Controller<\/td>\n<td><strong>Integrated<\/strong><\/td>\n<td>Separate Controller Required<\/td>\n<\/tr>\n<tr>\n<td>PXI\/PXIe Chassis<\/td>\n<td>Not Required<\/td>\n<td><strong>Required<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Host Connection<\/td>\n<td>\u0413\u0438\u0433\u0430\u0431\u0438\u0442\u043d\u044b\u0439 Ethernet<\/td>\n<td>PXI Express Backplane<\/td>\n<\/tr>\n<tr>\n<td>Multi-Instrument Expansion<\/td>\n<td>\u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0439<\/td>\n<td><strong>Strong<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Typical Deployment<\/td>\n<td>Embedded or Remote Stand-Alone System<\/td>\n<td>Modular Laboratory or Automated Test System<\/td>\n<\/tr>\n<\/table>\n<p>\nChoose the NI\u20117931R for compact, stand-alone or remote FlexRIO deployment. Choose a PXIe FlexRIO FPGA module when the system requires multiple synchronized PXI instruments, higher backplane integration or extensive modular expansion.\n<\/p>\n<h3>Software and Driver Requirements<\/h3>\n<p>\nDeveloping an NI\u20117931R application normally requires compatible NI software for the real-time controller, FPGA and installed adapter module.\n<\/p>\n<p>\nThe software environment may include:\n<\/p>\n<ul>\n<li>NI FlexRIO driver<\/li>\n<li>\u041b\u0430\u0431\u0412\u044c\u044e<\/li>\n<li>LabVIEW Real-Time Module<\/li>\n<li>LabVIEW FPGA Module<\/li>\n<li>Adapter module support files<\/li>\n<li>Component-Level Intellectual Property resources<\/li>\n<li>Application-specific FPGA examples or instrument design libraries<\/li>\n<\/ul>\n<p>\nSoftware compatibility must be checked across the controller, adapter module, operating system and development environment. Older NI\u20117931R systems may require an earlier supported FlexRIO software version.\n<\/p>\n<h3>Recommended Related Products<\/h3>\n<table>\n<tr>\n<td width=\"220\"><strong>NI\u20117932R<\/strong><\/td>\n<td>Stand-alone Controller for FlexRIO with a Kintex\u20117 K325T FPGA, 2 GB DRAM and high-speed serial connectivity.<\/td>\n<\/tr>\n<tr>\n<td><strong>NI\u20117935R<\/strong><\/td>\n<td>Higher-performance Controller for FlexRIO with a larger Kintex\u20117 K410T FPGA and additional DSP resources.<\/td>\n<\/tr>\n<tr>\n<td><strong>NI\u20116581B<\/strong><\/td>\n<td>100 MHz, 54-channel single-ended digital I\/O adapter module for compatible FlexRIO systems.<\/td>\n<\/tr>\n<tr>\n<td><strong>NI\u20116583<\/strong><\/td>\n<td>High-speed digital I\/O adapter module for custom FPGA-based digital test applications.<\/td>\n<\/tr>\n<tr>\n<td><strong>NI\u20115733<\/strong><\/td>\n<td>High-speed digitizer adapter module for FlexRIO acquisition and signal-processing systems.<\/td>\n<\/tr>\n<tr>\n<td><strong>NI\u20115734<\/strong><\/td>\n<td>High-speed FlexRIO digitizer adapter for demanding waveform acquisition applications.<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pxisource.com\/ru\/product-category\/%d0%bd%d0%b8\/pxi-%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d1%81\/%d0%bc%d0%be%d0%b4%d1%83%d0%bb%d0%b8-pxi\/\"><strong>NI PXI and FlexRIO Modules<\/strong><\/a><\/td>\n<td>Programmable and modular instruments for automated test, acquisition and electronic validation.<\/td>\n<\/tr>\n<\/table>\n<h3>Why Choose NI\u20117931R?<\/h3>\n<ul>\n<li>Stand-alone Controller for FlexRIO architecture<\/li>\n<li>Embedded NI Linux Real-Time controller<\/li>\n<li>Kintex\u20117 XC7K325T FPGA<\/li>\n<li>50,950 FPGA slices<\/li>\n<li>840 DSP slices<\/li>\n<li>16,020 kbit of FPGA block RAM<\/li>\n<li>2 GB of FPGA-accessible DRAM<\/li>\n<li>Up to 200 MB\/s single-direction FPGA-to-host transfer<\/li>\n<li>1 Gigabit Ethernet interface<\/li>\n<li>USB host and USB device connectivity<\/li>\n<li>MicroSD storage support<\/li>\n<li>External trigger input<\/li>\n<li>External reference clock input<\/li>\n<li>Programmable FPGA clocking architecture<\/li>\n<li>Support for compatible FlexRIO adapter modules<\/li>\n<li>No PXI chassis required for stand-alone operation<\/li>\n<li>Suitable for remote and embedded deployment<\/li>\n<li>Suitable for deterministic real-time processing<\/li>\n<li>Suitable for custom measurement and control systems<\/li>\n<\/ul>\n<h3>Frequently Asked Questions<\/h3>\n<h4>What is the NI\u20117931R?<\/h4>\n<p>\nThe NI\u20117931R is a stand-alone Controller for FlexRIO that combines an embedded NI Linux Real-Time controller, a Kintex\u20117 XC7K325T FPGA, 2 GB of FPGA-accessible DRAM and support for compatible FlexRIO adapter modules.\n<\/p>\n<h4>Is NI\u20117931 the same as NI\u20117931R?<\/h4>\n<p>\nYes. NI\u20117931 is commonly used as a shortened model reference, while NI\u20117931R is the full product designation used in NI technical documentation.\n<\/p>\n<h4>Which FPGA does the NI\u20117931R use?<\/h4>\n<p>\nThe NI\u20117931R uses a Xilinx Kintex\u20117 XC7K325T FPGA with 50,950 slices, 840 DSP slices and 16,020 kbit of block RAM.\n<\/p>\n<h4>How much FPGA-accessible DRAM does the NI\u20117931R provide?<\/h4>\n<p>\nThe controller provides 2 GB of onboard DRAM accessible from the FPGA.\n<\/p>\n<h4>Which operating system does the NI\u20117931R use?<\/h4>\n<p>\nThe embedded controller runs a 32-bit version of NI Linux Real-Time.\n<\/p>\n<h4>Does the NI\u20117931R require a PXI chassis?<\/h4>\n<p>\nNo. It is a stand-alone Controller for FlexRIO and does not require a PXI or PXIe chassis for normal operation.\n<\/p>\n<h4>Does the NI\u20117931R include measurement I\/O?<\/h4>\n<p>\nThe controller does not provide application-specific analog or digital measurement I\/O by itself. It requires a compatible FlexRIO adapter module.\n<\/p>\n<h4>Can the NI\u20117931R operate without a host computer?<\/h4>\n<p>\nA deployed real-time and FPGA application can operate independently of continuous host control. A host computer is still typically required for initial configuration, development, deployment and supervisory functions.\n<\/p>\n<h4>How does the NI\u20117931R connect to a host computer?<\/h4>\n<p>\nThe primary network connection is 1 Gigabit Ethernet. The controller also provides a USB device interface for supported configuration and service workflows.\n<\/p>\n<h4>What is the maximum FPGA-to-host transfer rate?<\/h4>\n<p>\nThe documented transfer rate is up to 200 MB\/s in a single direction and up to 150 MB\/s during bidirectional operation.\n<\/p>\n<h4>Does the NI\u20117931R support external storage?<\/h4>\n<p>\nYes. It supports compatible USB external storage and microSD media for real-time application storage and data logging.\n<\/p>\n<h4>Does the NI\u20117931R support external triggering?<\/h4>\n<p>\nYes. It includes a front-panel TRIG connection that can be incorporated into the FPGA application.\n<\/p>\n<h4>Does the NI\u20117931R support an external reference clock?<\/h4>\n<p>\nYes. The REF IN connection can provide a supported external timing reference to the FPGA clocking architecture.\n<\/p>\n<h4>Can the NI\u20117931R be used with NI\u20116581B?<\/h4>\n<p>\nThe NI\u20116581B belongs to the FlexRIO adapter module family supported by Controllers for FlexRIO. The exact controller, adapter module and FlexRIO driver combination should still be checked before system deployment.\n<\/p>\n<h4>What is the difference between NI\u20117931R and NI\u20117932R?<\/h4>\n<p>\nBoth use a Kintex\u20117 XC7K325T FPGA and provide 2 GB of FPGA DRAM. The NI\u20117932R adds high-speed serial SFP+ connectivity for applications requiring serial transceiver interfaces.\n<\/p>\n<h4>What is the difference between NI\u20117931R and NI\u20117935R?<\/h4>\n<p>\nThe NI\u20117935R uses a larger Kintex\u20117 XC7K410T FPGA and provides more FPGA slices, DSP slices and block RAM. It also supports high-speed serial connectivity. The NI\u20117931R is suitable when the additional resources are not required.\n<\/p>\n<h4>Does the NI\u20117931R require calibration?<\/h4>\n<p>\nThe NI\u20117931R controller hardware does not require calibration. However, the installed FlexRIO adapter module may have its own calibration requirements.\n<\/p>\n<h4>What should I check before purchasing the NI\u20117931R?<\/h4>\n<p>\nVerify the required FPGA resources, compatible FlexRIO adapter module, real-time processing requirements, network bandwidth, storage requirements, clock and trigger connections, external power supply, software versions and required cables or accessories.\n<\/p>\n<h3>\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI\u20117931R Controller for FlexRIO<\/strong> combines a 32-bit NI Linux Real-Time controller, a Kintex\u20117 XC7K325T FPGA, 2 GB of FPGA-accessible DRAM, Gigabit Ethernet and support for interchangeable FlexRIO adapter modules. Its stand-alone architecture makes it suitable for embedded data acquisition, custom digital instrumentation, FPGA signal processing, hardware-in-the-loop testing, semiconductor validation, remote measurement and research systems that do not require a full PXI chassis.<\/p>","protected":false},"excerpt":{"rendered":"<p>FPGA: Kintex-7 325T<br \/>\nBlock RAM (BRAM): 16020 kbit<br \/>\nFPGA Slices: 50950<br \/>\nDSP Slices: 840<br \/>\nHigh-Speed Serial Connectivity: &#8211;<\/p>","protected":false},"featured_media":31010,"template":"","meta":{"_acf_changed":false},"product_brand":[18],"product_cat":[673],"product_tag":[],"class_list":["post-34696","product","type-product","status-publish","has-post-thumbnail","product_brand-national-instruments","product_cat-c-module","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v28.1) - 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