{"id":29202,"date":"2025-09-17T11:30:33","date_gmt":"2025-09-17T03:30:33","guid":{"rendered":"https:\/\/pxisource.com\/?post_type=product&#038;p=29202"},"modified":"2026-08-27T12:42:16","modified_gmt":"2026-08-27T04:42:16","slug":"pxie-7821","status":"publish","type":"product","link":"https:\/\/pxisource.com\/ru\/product\/pxie-7821\/","title":{"rendered":"PXIe-7821"},"content":{"rendered":"<h3>Product Introduction<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>NI PXIe-7821R<\/strong> is a PXI Express digital reconfigurable I\/O module designed for applications requiring high-speed digital I\/O, deterministic hardware timing, custom digital protocols, sensor simulation, hardware-in-the-loop (HIL) testing, and automated electronic test.\n<\/p>\n<p>\nThe PXIe-7821R combines <strong>128 bidirectional digital I\/O channels<\/strong> \u0441 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u0443\u0435\u043c\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c <strong>Xilinx Kintex-7 160T FPGA<\/strong> \u0438 <strong>512 MB of onboard DRAM<\/strong>. Its FPGA-based architecture allows engineers to implement application-specific timing, triggering, signal generation, protocol handling, and decision-making directly in hardware.\n<\/p>\n<p>\nWith support for digital clock rates up to <strong>80 MHz<\/strong> and software-selectable logic levels including <strong>1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V<\/strong>, the PXIe-7821R provides a flexible platform for interfacing with a wide range of digital electronic devices.\n<\/p>\n<h3>Product Overview<\/h3>\n<p>\n\u0417\u0435\u043c\u043b\u044f <strong>National Instruments PXIe-7821R<\/strong> belongs to the NI R Series family of FPGA-based reconfigurable I\/O devices.\n<\/p>\n<p>\nUnlike conventional fixed-function digital I\/O modules, the PXIe-7821R provides a user-programmable FPGA that allows the behavior of the digital channels to be customized for a specific application.\n<\/p>\n<p>\nIndividual digital lines can be configured through FPGA logic for functions such as:\n<\/p>\n<ul>\n<li>Digital inputs<\/li>\n<li>Digital outputs<\/li>\n<li>Counter\/timers<\/li>\n<li>\u0413\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u044f \u0428\u0418\u041c<\/li>\n<li>Encoder inputs<\/li>\n<li>\u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0435 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b<\/li>\n<li>Hardware triggering<\/li>\n<li>Pattern generation<\/li>\n<li>Sensor simulation<\/li>\n<li>Hardware-in-the-loop interfaces<\/li>\n<\/ul>\n<p>\nThis makes the PXIe-7821R particularly useful when standard digital I\/O hardware cannot provide the required timing or protocol flexibility.\n<\/p>\n<h3>Key Features<\/h3>\n<h4>128 Bidirectional Digital I\/O Channels<\/h4>\n<p>\nThe PXIe-7821R provides <strong>128 bidirectional digital I\/O channels<\/strong>.\n<\/p>\n<p>\nThe large channel count makes the module suitable for applications requiring many digital signals within a single PXI Express instrument.\n<\/p>\n<p>\n\u0422\u0438\u043f\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442:\n<\/p>\n<ul>\n<li>Digital device interfacing<\/li>\n<li>ECU testing<\/li>\n<li>Sensor simulation<\/li>\n<li>Digital pattern generation<\/li>\n<li>Protocol emulation<\/li>\n<li>Hardware-in-the-loop testing<\/li>\n<li>Production functional testing<\/li>\n<\/ul>\n<h4>Up to 80 MHz Digital I\/O<\/h4>\n<p>\nThe PXIe-7821R supports a maximum digital I\/O frequency of up to <strong>80 MHz<\/strong>.\n<\/p>\n<p>\nThis allows the module to handle high-speed digital signals while maintaining FPGA-based hardware timing.\n<\/p>\n<p>\nApplications can include high-speed waveform generation, digital acquisition, protocol testing, and bit error rate testing.\n<\/p>\n<h4>Xilinx Kintex-7 160T FPGA<\/h4>\n<p>\nAt the center of the PXIe-7821R is a <strong>Xilinx Kintex-7 160T FPGA<\/strong>.\n<\/p>\n<p>\nThe FPGA provides programmable hardware resources that can execute multiple digital operations in parallel with deterministic timing.\n<\/p>\n<p>\nFPGA logic can be used to implement:\n<\/p>\n<ul>\n<li>Custom digital interfaces<\/li>\n<li>Hardware state machines<\/li>\n<li>Triggering logic<\/li>\n<li>Protocol encoding and decoding<\/li>\n<li>Signal generation<\/li>\n<li>Signal acquisition<\/li>\n<li>Real-time decision making<\/li>\n<li>Counter and timer functions<\/li>\n<\/ul>\n<h4>101,400 FPGA LUTs<\/h4>\n<p>\nThe Kintex-7 160T FPGA provides <strong>101,400 lookup tables (LUTs)<\/strong>.\n<\/p>\n<p>\nThese programmable logic resources can be used to implement custom digital algorithms, communication protocols, state machines, and hardware control functions.\n<\/p>\n<h4>202,800 Flip-Flops<\/h4>\n<p>\nThe PXIe-7821R FPGA provides <strong>202,800 flip-flops<\/strong>.\n<\/p>\n<p>\nThese resources support highly parallel and deterministic digital processing architectures.\n<\/p>\n<h4>600 DSP48 Slices<\/h4>\n<p>\nThe Kintex-7 160T FPGA includes <strong>600 DSP48 slices<\/strong>.\n<\/p>\n<p>\nDedicated DSP resources can support arithmetic and signal-processing operations implemented directly in FPGA hardware.\n<\/p>\n<h4>11,700 kbit Block RAM<\/h4>\n<p>\nThe PXIe-7821R provides approximately <strong>11,700 kbit of embedded FPGA Block RAM<\/strong>.\n<\/p>\n<p>\nBlock RAM can be used for:\n<\/p>\n<ul>\n<li>FIFO buffers<\/li>\n<li>Lookup tables<\/li>\n<li>Temporary digital data storage<\/li>\n<li>Pattern buffers<\/li>\n<li>Protocol processing<\/li>\n<li>FPGA state information<\/li>\n<\/ul>\n<h4>512 MB Onboard DRAM<\/h4>\n<p>\nIn addition to FPGA Block RAM, the PXIe-7821R provides <strong>512 MB of onboard DRAM<\/strong>.\n<\/p>\n<p>\nThe larger external memory is useful for applications requiring substantial data buffering, such as:\n<\/p>\n<ul>\n<li>Long digital waveform generation<\/li>\n<li>\u0412\u044b\u0441\u043e\u043a\u043e\u0441\u043a\u043e\u0440\u043e\u0441\u0442\u043d\u043e\u0439 \u0441\u0431\u043e\u0440 \u0434\u0430\u043d\u043d\u044b\u0445<\/li>\n<li>Large pattern storage<\/li>\n<li>Sensor simulation<\/li>\n<li>\u0420\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u0446\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445<\/li>\n<li>Custom FPGA processing<\/li>\n<\/ul>\n<h4>Up to 800 MB\/s DRAM Streaming<\/h4>\n<p>\nThe PXIe-7821R contains one 512 MB DRAM bank with a maximum theoretical streaming bandwidth of approximately <strong>800 MB\/s<\/strong>.\n<\/p>\n<p>\nThis memory provides additional buffering capacity for applications where the FPGA&#8217;s internal Block RAM is insufficient.\n<\/p>\n<h4>Software-Selectable Logic Levels<\/h4>\n<p>\nThe PXIe-7821R supports multiple digital logic levels, providing flexibility when interfacing with different electronic devices.\n<\/p>\n<p>\nSupported logic levels include:\n<\/p>\n<ul>\n<li>1.2 V<\/li>\n<li>1.5 V<\/li>\n<li>1.8 V<\/li>\n<li>2.5 V<\/li>\n<li>3.3 V<\/li>\n<\/ul>\n<p>\nDigital I\/O voltage selection is programmable per connector and defined as part of the FPGA configuration.\n<\/p>\n<h4>Four External Clock Inputs<\/h4>\n<p>\nThe PXIe-7821R provides <strong>four external clock inputs<\/strong>.\n<\/p>\n<p>\nExternal clocks can be used when digital I\/O operations must be synchronized with external devices or custom test hardware.\n<\/p>\n<h4>FPGA Timebase Options<\/h4>\n<p>\nThe FPGA supports multiple internal timebase options:\n<\/p>\n<ul>\n<li>40 MHz<\/li>\n<li>80 MHz<\/li>\n<li>120 MHz<\/li>\n<li>160 MHz<\/li>\n<li>200 \u041c\u0413\u0446<\/li>\n<\/ul>\n<p>\nThe default FPGA timebase is 40 MHz.\n<\/p>\n<h4>Deterministic Hardware Timing<\/h4>\n<p>\nBecause timing and decision logic execute directly in the FPGA, the PXIe-7821R can provide deterministic hardware-timed behavior.\n<\/p>\n<p>\nThis is particularly useful for applications where operating-system or software latency would be unacceptable.\n<\/p>\n<h4>Custom Digital Protocols<\/h4>\n<p>\nThe user-programmable FPGA allows engineers to implement specialized communication protocols directly in hardware.\n<\/p>\n<p>\nCustom FPGA logic can provide:\n<\/p>\n<ul>\n<li>Protocol state machines<\/li>\n<li>Custom packet formats<\/li>\n<li>Bit-level timing<\/li>\n<li>Encoding and decoding<\/li>\n<li>Hardware handshaking<\/li>\n<li>Error detection<\/li>\n<li>Deterministic responses<\/li>\n<\/ul>\n<h4>Peer-to-Peer Streaming<\/h4>\n<p>\nThe PXIe-7821R supports PXI Express peer-to-peer streaming, allowing compatible PXI Express modules to transfer data directly between instruments.\n<\/p>\n<p>\nA typical architecture can be:\n<\/p>\n<p>\n<strong>PXI Measurement Module \u2192 PXIe-7821R FPGA \u2192 PXI Output Module<\/strong>\n<\/p>\n<p>\nThis can reduce host processor involvement in suitable high-speed test architectures.\n<\/p>\n<h4>16 DMA Channels<\/h4>\n<p>\nThe PXIe-7821R provides <strong>16 DMA channels<\/strong> for transferring data between FPGA resources and the host system.\n<\/p>\n<p>\nDMA-based transfer is useful for moving large amounts of digital data while reducing CPU overhead.\n<\/p>\n<h4>PCI Express x4 Bus Interface<\/h4>\n<p>\nThe PXIe-7821R uses an <strong>x4 PCI Express<\/strong> bus interface for communication with the host system.\n<\/p>\n<p>\nThe architecture supports DMA, interrupts, and programmed I\/O data transfers.\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=\"260\">Product Type<\/td>\n<td>PXI Digital Reconfigurable I\/O Module<\/td>\n<\/tr>\n<tr>\n<td>\u041c\u043e\u0434\u0435\u043b\u044c<\/td>\n<td>NI PXIe-7821 \/ PXIe-7821R<\/td>\n<\/tr>\n<tr>\n<td>Part Number<\/td>\n<td>783485-01<\/td>\n<\/tr>\n<tr>\n<td>Platform<\/td>\n<td>PXI Express<\/td>\n<\/tr>\n<tr>\n<td>Digital I\/O Channels<\/td>\n<td>128 Bidirectional Channels<\/td>\n<\/tr>\n<tr>\n<td>Maximum Digital I\/O Frequency<\/td>\n<td>80 MHz<\/td>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td>Xilinx Kintex-7 160T<\/td>\n<\/tr>\n<tr>\n<td>FPGA LUTs<\/td>\n<td>101,400<\/td>\n<\/tr>\n<tr>\n<td>FPGA Flip-Flops<\/td>\n<td>202,800<\/td>\n<\/tr>\n<tr>\n<td>DSP48 Slices<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td>Embedded Block RAM<\/td>\n<td>11,700 kbit<\/td>\n<\/tr>\n<tr>\n<td>Onboard DRAM<\/td>\n<td>512 MB<\/td>\n<\/tr>\n<tr>\n<td>DRAM Banks<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>Maximum Theoretical DRAM Streaming Rate<\/td>\n<td>800 MB\/s<\/td>\n<\/tr>\n<tr>\n<td>Digital Logic Levels<\/td>\n<td>1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V<\/td>\n<\/tr>\n<tr>\n<td>External Clock Inputs<\/td>\n<td>4<\/td>\n<\/tr>\n<tr>\n<td>FPGA Timebases<\/td>\n<td>40, 80, 120, 160 and 200 MHz<\/td>\n<\/tr>\n<tr>\n<td>Default FPGA Timebase<\/td>\n<td>40 MHz<\/td>\n<\/tr>\n<tr>\n<td>DMA Channels<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>\u0428\u0438\u043d\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441<\/td>\n<td>x4 PCI Express<\/td>\n<\/tr>\n<tr>\n<td>Peer-to-Peer Streaming<\/td>\n<td>Supported<\/td>\n<\/tr>\n<tr>\n<td>FPGA Programmable<\/td>\n<td>\u0414\u0430<\/td>\n<\/tr>\n<tr>\n<td>Primary Applications<\/td>\n<td>HIL Test, Sensor Simulation, Digital Protocols, Waveform Generation and Automated Test<\/td>\n<\/tr>\n<\/table>\n<h3>What Is Reconfigurable Digital I\/O?<\/h3>\n<p>\nA conventional digital I\/O module generally provides a predefined set of timing and acquisition functions.\n<\/p>\n<p>\nA reconfigurable I\/O module such as the PXIe-7821R adds a user-programmable FPGA between the digital I\/O hardware and the host computer.\n<\/p>\n<p>\nA simplified architecture is:\n<\/p>\n<p>\n<strong>Digital DUT \u2192 128 DIO \u2192 Kintex-7 FPGA \u2192 DRAM \/ DMA \u2192 PXI Express Controller<\/strong>\n<\/p>\n<p>\nThis architecture allows digital signals to be processed directly in hardware before data is transferred to the host.\n<\/p>\n<h3>How Does the PXIe-7821R Work?<\/h3>\n<p>\nThe PXIe-7821R combines programmable digital I\/O with FPGA-based hardware processing.\n<\/p>\n<p>\nInstead of requiring the host processor to respond to every digital event, the FPGA can execute the required logic directly on the module.\n<\/p>\n<p>\n\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440:\n<\/p>\n<p>\n<strong>Digital Input \u2192 FPGA Condition Detection \u2192 Hardware Decision \u2192 Digital Output<\/strong>\n<\/p>\n<p>\nThis architecture enables deterministic responses and highly customized digital behavior.\n<\/p>\n<h3>Digital Input Applications<\/h3>\n<p>\nAny of the 128 bidirectional digital channels can be configured for input functionality according to the FPGA application.\n<\/p>\n<p>\nDigital input applications can include:\n<\/p>\n<ul>\n<li>Logic-state monitoring<\/li>\n<li>Digital pattern acquisition<\/li>\n<li>Encoder input<\/li>\n<li>Protocol decoding<\/li>\n<li>Event detection<\/li>\n<li>Hardware triggering<\/li>\n<li>Device status monitoring<\/li>\n<\/ul>\n<h3>Digital Output Applications<\/h3>\n<p>\nDigital lines can also be configured as outputs for generating deterministic digital signals.\n<\/p>\n<p>\nApplications can include:\n<\/p>\n<ul>\n<li>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0435 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0438\u0433\u043d\u0430\u043b\u043e\u0432<\/li>\n<li>Device control<\/li>\n<li>Sensor simulation<\/li>\n<li>\u0413\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u044f \u0428\u0418\u041c<\/li>\n<li>Protocol emulation<\/li>\n<li>Digital pattern generation<\/li>\n<li>Trigger generation<\/li>\n<\/ul>\n<h3>Counter and Timer Applications<\/h3>\n<p>\nBecause counter and timer functions can be implemented in FPGA logic, engineers can create application-specific timing architectures rather than relying only on a fixed number of hardware counters.\n<\/p>\n<p>\nPossible functions include:\n<\/p>\n<ul>\n<li>\u041f\u043e\u0434\u0441\u0447\u0435\u0442 \u0441\u043e\u0431\u044b\u0442\u0438\u0439<\/li>\n<li>Frequency measurement<\/li>\n<li>Period measurement<\/li>\n<li>Pulse-width measurement<\/li>\n<li>\u0413\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u044f \u0438\u043c\u043f\u0443\u043b\u044c\u0441\u043e\u0432<\/li>\n<li>Custom timing sequences<\/li>\n<\/ul>\n<h3>PWM Generation<\/h3>\n<p>\nThe PXIe-7821R can implement PWM generation through custom FPGA logic.\n<\/p>\n<p>\nPWM applications can include:\n<\/p>\n<ul>\n<li>Motor control signal simulation<\/li>\n<li>ECU testing<\/li>\n<li>Industrial control simulation<\/li>\n<li>Electronic device stimulation<\/li>\n<li>Custom pulse generation<\/li>\n<\/ul>\n<h3>Encoder Simulation and Measurement<\/h3>\n<p>\nFPGA-based digital I\/O can be used to acquire or simulate encoder signals.\n<\/p>\n<p>\nThis can be useful in HIL systems for testing:\n<\/p>\n<ul>\n<li>Motor controllers<\/li>\n<li>Motion-control systems<\/li>\n<li>Automotive ECUs<\/li>\n<li>Industrial controllers<\/li>\n<li>\u0412\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f<\/li>\n<\/ul>\n<h3>Sensor Simulation<\/h3>\n<p>\nNI identifies sensor simulation as one of the primary application areas for the PXIe-7821R.\n<\/p>\n<p>\nThe module can generate deterministic digital signals that reproduce the behavior of compatible sensors and interfaces.\n<\/p>\n<p>\nA typical HIL architecture can be:\n<\/p>\n<p>\n<strong>Test Model \u2192 PXIe-7821R FPGA \u2192 Simulated Digital Sensor Signals \u2192 ECU<\/strong>\n<\/p>\n<h3>Hardware-in-the-Loop Testing<\/h3>\n<p>\nThe PXIe-7821R is well suited for <strong>hardware-in-the-loop (HIL) testing<\/strong> because FPGA logic can provide deterministic digital stimulus and response.\n<\/p>\n<p>\nA typical HIL test system can use the module for:\n<\/p>\n<ul>\n<li>Digital sensor simulation<\/li>\n<li>Actuator signal monitoring<\/li>\n<li>PWM generation and measurement<\/li>\n<li>Encoder simulation<\/li>\n<li>Custom protocol communication<\/li>\n<li>Fault simulation<\/li>\n<li>\u0414\u0435\u0442\u0435\u0440\u043c\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u0435<\/li>\n<\/ul>\n<h3>Bit Error Rate Testing<\/h3>\n<p>\nThe PXIe-7821R can be used in digital bit error rate test applications requiring customized pattern generation and acquisition.\n<\/p>\n<p>\nFPGA logic can generate a known digital sequence, acquire the returned data, compare transmitted and received patterns, and count detected errors.\n<\/p>\n<p>\nA simplified architecture is:\n<\/p>\n<p>\n<strong>FPGA Pattern Generator \u2192 DUT \u2192 FPGA Pattern Comparison \u2192 Error Count<\/strong>\n<\/p>\n<h3>High-Speed Waveform Generation<\/h3>\n<p>\nThe combination of 128 digital channels, FPGA timing, and onboard DRAM makes the PXIe-7821R suitable for customized high-speed digital waveform generation.\n<\/p>\n<p>\nThe 512 MB DRAM can store large digital patterns that are streamed through FPGA logic to the digital outputs.\n<\/p>\n<h3>Custom Protocol Implementation<\/h3>\n<p>\nThe PXIe-7821R can implement specialized or proprietary digital communication protocols.\n<\/p>\n<p>\nThis is useful when the DUT uses a protocol that cannot be adequately tested using a conventional digital I\/O instrument.\n<\/p>\n<p>\nFPGA logic can control:\n<\/p>\n<ul>\n<li>Clock generation<\/li>\n<li>Data framing<\/li>\n<li>Handshaking<\/li>\n<li>Protocol state machines<\/li>\n<li>Bit timing<\/li>\n<li>Error handling<\/li>\n<li>Response generation<\/li>\n<\/ul>\n<h3>Real-Time Hardware Decision Making<\/h3>\n<p>\nOne of the major advantages of the PXIe-7821R is the ability to execute custom decision logic directly on the FPGA.\n<\/p>\n<p>\n\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440:\n<\/p>\n<p>\n<strong>Input Event Detected \u2192 FPGA Evaluates Condition \u2192 Output Response Generated<\/strong>\n<\/p>\n<p>\nThis avoids the variable latency associated with routing every event through the host operating system.\n<\/p>\n<h3>Onboard DRAM for Large Digital Patterns<\/h3>\n<p>\nThe 512 MB onboard DRAM provides substantially more storage than the FPGA&#8217;s embedded Block RAM.\n<\/p>\n<p>\nThis memory can be useful for:\n<\/p>\n<ul>\n<li>Large waveform buffers<\/li>\n<li>Long digital test patterns<\/li>\n<li>Sensor simulation data<\/li>\n<li>Acquired digital data<\/li>\n<li>Intermediate FPGA processing data<\/li>\n<\/ul>\n<h3>PXIe-7821R vs PXIe-7820R<\/h3>\n<p>\nThe PXIe-7821R and PXIe-7820R are closely related R Series digital reconfigurable I\/O modules. The PXIe-7821R adds onboard DRAM, making it more suitable for applications requiring large data buffers or long digital patterns.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PXIe-7821R<\/th>\n<th>PXIe-7820R<\/th>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td>\u041a\u0438\u043d\u0442\u0435\u043a\u0441-7 160\u0422<\/td>\n<td>\u041a\u0438\u043d\u0442\u0435\u043a\u0441-7 160\u0422<\/td>\n<\/tr>\n<tr>\n<td>\u0426\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u0432\u0432\u043e\u0434-\u0432\u044b\u0432\u043e\u0434<\/td>\n<td>128<\/td>\n<td>128<\/td>\n<\/tr>\n<tr>\n<td>Maximum DIO Rate<\/td>\n<td>80 MHz<\/td>\n<td>80 MHz<\/td>\n<\/tr>\n<tr>\n<td>Onboard DRAM<\/td>\n<td><strong>512 MB<\/strong><\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<td>Primary Advantage<\/td>\n<td><strong>Large Data and Pattern Buffering<\/strong><\/td>\n<td>Applications Not Requiring DRAM<\/td>\n<\/tr>\n<\/table>\n<h3>PXIe-7821R vs PXIe-7822R<\/h3>\n<p>\nThe PXIe-7822R provides a larger FPGA than the PXIe-7821R while retaining onboard DRAM, making it suitable for applications requiring more FPGA logic resources.\n<\/p>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PXIe-7821R<\/th>\n<th>PXIe-7822R<\/th>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td><strong>\u041a\u0438\u043d\u0442\u0435\u043a\u0441-7 160\u0422<\/strong><\/td>\n<td>\u041aintex-7 325T<\/td>\n<\/tr>\n<tr>\n<td>Onboard DRAM<\/td>\n<td>512 MB<\/td>\n<td>512 MB<\/td>\n<\/tr>\n<tr>\n<td>DRAM Bandwidth<\/td>\n<td>800 MB\/s<\/td>\n<td>800 MB\/s<\/td>\n<\/tr>\n<tr>\n<td>Best Application<\/td>\n<td>Moderate FPGA Resource Requirements<\/td>\n<td><strong>More Complex FPGA Applications<\/strong><\/td>\n<\/tr>\n<\/table>\n<h3>PXIe-7821R vs Conventional Digital I\/O<\/h3>\n<table>\n<tr>\n<th>\u0424\u0443\u043d\u043a\u0446\u0438\u044f<\/th>\n<th>PXIe-7821R<\/th>\n<th>Conventional Digital I\/O<\/th>\n<\/tr>\n<tr>\n<td>Digital Channels<\/td>\n<td>128 Bidirectional<\/td>\n<td>Device Dependent<\/td>\n<\/tr>\n<tr>\n<td>\u0424\u041f\u0413\u0410<\/td>\n<td><strong>User Programmable<\/strong><\/td>\n<td>Usually No<\/td>\n<\/tr>\n<tr>\n<td>Custom Protocols<\/td>\n<td><strong>\u0414\u0430<\/strong><\/td>\n<td>\u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0439<\/td>\n<\/tr>\n<tr>\n<td>Hardware Decision Logic<\/td>\n<td><strong>Customizable<\/strong><\/td>\n<td>Fixed Function<\/td>\n<\/tr>\n<tr>\n<td>Deterministic Timing<\/td>\n<td><strong>FPGA Based<\/strong><\/td>\n<td>Device Dependent<\/td>\n<\/tr>\n<tr>\n<td>Onboard DRAM<\/td>\n<td><strong>512 MB<\/strong><\/td>\n<td>Device Dependent<\/td>\n<\/tr>\n<tr>\n<td>Best Application<\/td>\n<td>Custom High-Speed Digital Test<\/td>\n<td>Standard Digital I\/O<\/td>\n<\/tr>\n<\/table>\n<h3>PXIe-7821R in a Complete PXI System<\/h3>\n<p>\nThe PXIe-7821R can provide FPGA-based digital I\/O within a complete <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 system<\/a>.\n<\/p>\n<p>\nA typical system can include:\n<\/p>\n<ul>\n<li><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 \u0428\u0430\u0441\u0441\u0438<\/a><\/li>\n<li><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-controller\/\">PXI \u041a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440<\/a><\/li>\n<li>PXIe-7821R Digital Reconfigurable I\/O Module<\/li>\n<li><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\/\">\u041c\u043e\u0434\u0443\u043b\u0438 PXI<\/a><\/li>\n<li>PXI data acquisition modules<\/li>\n<li>PXI oscilloscopes and digitizers<\/li>\n<li>PXI switching modules<\/li>\n<li>PXI Source Measure Units<\/li>\n<li>PXI timing and synchronization hardware<\/li>\n<\/ul>\n<p>\nThis modular architecture allows digital FPGA functions to be combined with analog measurement, switching, RF, power, and other test capabilities.\n<\/p>\n<h3>Software and FPGA Programming<\/h3>\n<p>\nThe PXIe-7821R is designed for user-programmable FPGA applications using compatible NI FPGA development software.\n<\/p>\n<p>\nWith LabVIEW FPGA, engineers can define custom hardware functionality including:\n<\/p>\n<ul>\n<li>Digital input and output<\/li>\n<li>Counter\/timers<\/li>\n<li>PWM<\/li>\n<li>\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b \u044d\u043d\u043a\u043e\u0434\u0435\u0440\u0430<\/li>\n<li>\u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b \u0441\u0432\u044f\u0437\u0438<\/li>\n<li>Hardware triggering<\/li>\n<li>Data buffering<\/li>\n<li>Real-time decision making<\/li>\n<\/ul>\n<p>\nSoftware compatibility should be verified for the specific development environment and system configuration.\n<\/p>\n<h3>Compatible Accessories<\/h3>\n<p>\nNI provides accessories for connecting the PXIe-7821R to external digital hardware.\n<\/p>\n<p>\nCompatible accessories can include:\n<\/p>\n<ul>\n<li><strong>SHC68-C68-RDIO2<\/strong> shielded R Series high-speed digital cable<\/li>\n<li><strong>SCB-68 HSDIO<\/strong> shielded 68-pin connector block<\/li>\n<li>Compatible digital test fixtures and breakout hardware<\/li>\n<\/ul>\n<p>\nThe appropriate cable and terminal hardware should be selected according to the DUT interface and system wiring requirements.\n<\/p>\n<h3>How to Choose a Digital Reconfigurable I\/O Module<\/h3>\n<p>\nBefore selecting the PXIe-7821R, engineers should evaluate:\n<\/p>\n<ul>\n<li>Required number of digital channels<\/li>\n<li>Maximum digital signal frequency<\/li>\n<li>Required logic voltage levels<\/li>\n<li>FPGA resource requirements<\/li>\n<li>Onboard memory requirements<\/li>\n<li>External clock requirements<\/li>\n<li>Custom protocol requirements<\/li>\n<li>HIL test requirements<\/li>\n<li>Peer-to-peer streaming requirements<\/li>\n<li>PXI Express chassis compatibility<\/li>\n<li>FPGA software requirements<\/li>\n<li>Cable and connector requirements<\/li>\n<\/ul>\n<h3>Industries<\/h3>\n<ul>\n<li>Automotive Electronics<\/li>\n<li>Hardware-in-the-Loop Test<\/li>\n<li>Automated Test Equipment<\/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>Electronic Manufacturing<\/li>\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>\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>Embedded Systems<\/li>\n<li>Research and Development<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<h4>Hardware-in-the-Loop Testing<\/h4>\n<p>\nThe PXIe-7821R can provide deterministic digital stimulus, acquisition, protocol handling, and sensor simulation for HIL test systems.\n<\/p>\n<h4>Sensor Simulation<\/h4>\n<p>\nFPGA-programmable digital channels can generate deterministic signals that simulate compatible digital sensors and interfaces.\n<\/p>\n<h4>High-Speed Digital Waveform Generation<\/h4>\n<p>\nThe combination of 128 digital channels, 80 MHz operation, FPGA timing, and 512 MB DRAM supports custom high-speed digital waveform generation.\n<\/p>\n<h4>Bit Error Rate Testing<\/h4>\n<p>\nFPGA logic can generate digital patterns, acquire returned data, compare the patterns, and calculate digital errors for customized BER test applications.\n<\/p>\n<h4>Custom Digital Protocols<\/h4>\n<p>\nThe Kintex-7 FPGA can implement proprietary or application-specific digital communication protocols with deterministic hardware timing.\n<\/p>\n<h4>Automated Production Test<\/h4>\n<p>\nThe PXIe-7821R can be integrated into automated functional test systems requiring high-density programmable digital I\/O.\n<\/p>\n<h3>Recommended Related Products<\/h3>\n<table>\n<tr>\n<td width=\"190\">\n<strong>NI PXIe-7821R<\/strong>\n<\/td>\n<td>\n128-channel digital reconfigurable I\/O module with Kintex-7 160T FPGA and 512 MB onboard DRAM.\n<\/td>\n<\/tr>\n<tr>\n<td>\n<strong>NI PXIe-7820R<\/strong>\n<\/td>\n<td>\n128-channel R Series digital reconfigurable I\/O module using a Kintex-7 160T FPGA for applications that do not require onboard DRAM.\n<\/td>\n<\/tr>\n<tr>\n<td>\n<strong>NI PXIe-7822R<\/strong>\n<\/td>\n<td>\nDigital reconfigurable I\/O module with a larger Kintex-7 325T FPGA and 512 MB DRAM for applications requiring additional FPGA resources.\n<\/td>\n<\/tr>\n<tr>\n<td>\n<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 Modules<\/strong><\/a>\n<\/td>\n<td>\nPXI instrumentation for digital I\/O, data acquisition, FPGA processing, switching, signal generation, and automated test.\n<\/td>\n<\/tr>\n<\/table>\n<h3>Why Choose NI PXIe-7821R?<\/h3>\n<ul>\n<li>128 bidirectional digital I\/O channels<\/li>\n<li>Up to 80 MHz digital I\/O<\/li>\n<li>Xilinx Kintex-7 160T FPGA<\/li>\n<li>101,400 FPGA LUTs<\/li>\n<li>202,800 flip-flops<\/li>\n<li>600 DSP48 slices<\/li>\n<li>11,700 kbit embedded Block RAM<\/li>\n<li>512 MB onboard DRAM<\/li>\n<li>Up to 800 MB\/s theoretical DRAM streaming<\/li>\n<li>1.2 V to 3.3 V selectable logic levels<\/li>\n<li>Four external clock inputs<\/li>\n<li>16 DMA channels<\/li>\n<li>Peer-to-peer streaming support<\/li>\n<li>Custom hardware-timed decision making<\/li>\n<li>Suitable for HIL and sensor simulation<\/li>\n<li>Suitable for custom digital protocols<\/li>\n<\/ul>\n<h3>Frequently Asked Questions<\/h3>\n<h4>What is the NI PXIe-7821R?<\/h4>\n<p>\nThe NI PXIe-7821R is a PXI Express digital reconfigurable I\/O module featuring 128 bidirectional digital channels, a Xilinx Kintex-7 160T FPGA, and 512 MB of onboard DRAM.\n<\/p>\n<h4>What is the part number of the PXIe-7821R?<\/h4>\n<p>\nThe NI ordering part number for the PXIe-7821R is <strong>783485-01<\/strong>.\n<\/p>\n<h4>How many digital channels does the PXIe-7821R have?<\/h4>\n<p>\nThe PXIe-7821R provides <strong>128 bidirectional digital I\/O channels<\/strong>.\n<\/p>\n<h4>What is the maximum clock rate of the PXIe-7821R?<\/h4>\n<p>\nThe digital I\/O supports a maximum clock rate of up to <strong>80 MHz<\/strong>.\n<\/p>\n<h4>What FPGA does the PXIe-7821R use?<\/h4>\n<p>\nThe PXIe-7821R uses a <strong>Xilinx Kintex-7 160T FPGA<\/strong>.\n<\/p>\n<h4>How much DRAM does the PXIe-7821R have?<\/h4>\n<p>\nThe module provides <strong>512 MB of onboard DRAM<\/strong> in one memory bank.\n<\/p>\n<h4>What is the DRAM bandwidth of the PXIe-7821R?<\/h4>\n<p>\nNI specifies a maximum theoretical DRAM streaming data rate of approximately <strong>800 MB\/s<\/strong>.\n<\/p>\n<h4>What digital logic levels does the PXIe-7821R support?<\/h4>\n<p>\nSupported digital logic levels include <strong>1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V<\/strong>.\n<\/p>\n<h4>Can the PXIe-7821R generate PWM signals?<\/h4>\n<p>\nYes. PWM generation can be implemented using custom FPGA logic.\n<\/p>\n<h4>Can the PXIe-7821R be used as a counter or timer?<\/h4>\n<p>\nYes. Digital lines and FPGA resources can be configured to implement counter and timer functionality.\n<\/p>\n<h4>Can the PXIe-7821R read encoder signals?<\/h4>\n<p>\nYes. NI identifies encoder input as one of the configurable digital I\/O functions supported through FPGA programming.\n<\/p>\n<h4>Can the PXIe-7821R implement custom communication protocols?<\/h4>\n<p>\nYes. The user-programmable FPGA allows specialized digital communication protocols and hardware state machines to be implemented directly on the module.\n<\/p>\n<h4>Can the PXIe-7821R be used for HIL testing?<\/h4>\n<p>\nYes. HIL testing is one of the primary applications identified by NI for the PXIe-7821R.\n<\/p>\n<h4>Can the PXIe-7821R be used for sensor simulation?<\/h4>\n<p>\nYes. Its deterministic FPGA-based digital I\/O makes the module suitable for compatible digital sensor simulation applications.\n<\/p>\n<h4>Does the PXIe-7821R support peer-to-peer streaming?<\/h4>\n<p>\nYes. The module supports peer-to-peer streaming for direct data transfer between compatible PXI Express modules.\n<\/p>\n<h4>What is the difference between PXIe-7820R and PXIe-7821R?<\/h4>\n<p>\nBoth use the Kintex-7 160T FPGA and provide 128 digital I\/O channels. A major advantage of the PXIe-7821R is its <strong>512 MB onboard DRAM<\/strong>, making it better suited for large waveform, pattern, and data-buffering applications.\n<\/p>\n<h4>What is the difference between PXIe-7821R and PXIe-7822R?<\/h4>\n<p>\nBoth provide onboard DRAM, but the PXIe-7822R uses a larger Kintex-7 325T FPGA. The PXIe-7822R is therefore more appropriate when the FPGA application requires substantially more programmable logic resources.\n<\/p>\n<h4>What should I check before purchasing a PXIe-7821R?<\/h4>\n<p>\nBefore purchasing the PXIe-7821R, verify the required digital channel count, clock rate, logic voltage, FPGA resources, onboard DRAM requirements, external clock requirements, connector and cable requirements, PXI Express chassis compatibility, FPGA software compatibility, and exact NI ordering part number.\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 PXIe-7821R Digital Reconfigurable I\/O Module<\/strong> combines 128 bidirectional digital I\/O channels, an 80 MHz maximum digital clock rate, a Xilinx Kintex-7 160T FPGA, and 512 MB of onboard DRAM in a PXI Express platform. Its programmable FPGA architecture, selectable digital logic levels, deterministic hardware timing, peer-to-peer streaming, and large onboard memory make it well suited for hardware-in-the-loop testing, sensor simulation, custom digital protocols, high-speed waveform generation, bit error rate testing, and automated electronic test systems.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0428\u0438\u043d\u043d\u044b\u0439 \u0441\u043e\u0435\u0434\u0438\u043d\u0438\u0442\u0435\u043b\u044c: PXI Express<br \/>\n\u041c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u0442\u0430\u043a\u0442\u043e\u0432\u0430\u044f \u0447\u0430\u0441\u0442\u043e\u0442\u0430: 8 \u041c\u0413\u0446<br \/>\nNumber of Bidirectional Digital Channels: 128<br \/>\n\u041b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0443\u0440\u043e\u0432\u043d\u0438 \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430-\u0432\u044b\u0432\u043e\u0434\u0430: 1,2 \u0412, 1,5 \u0412, 1,8 \u0412, 2,5 \u0412, 3,3 \u0412<br \/>\n\u0414\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u0430\u044f \u043f\u0430\u043c\u044f\u0442\u044c (DRAM): 512 \u041c\u0411<br \/>\nNumber of External Clock Inputs: 4<br \/>\nFPGA: Kintex-7 160T<br \/>\n\u041f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u043f\u043e\u0442\u043e\u043a\u043e\u0432\u0443\u044e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0443 Peer-to-Peer: \u0414\u0430<\/p>","protected":false},"featured_media":31828,"template":"","meta":{"_acf_changed":false},"product_brand":[18],"product_cat":[745],"product_tag":[],"class_list":["post-29202","product","type-product","status-publish","has-post-thumbnail","product_brand-national-instruments","product_cat-pxi-fpga-and-rio-modules","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the 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