{"id":34729,"date":"2026-08-07T15:52:20","date_gmt":"2026-08-07T07:52:20","guid":{"rendered":"https:\/\/pxisource.com\/?post_type=product&#038;p=34729"},"modified":"2026-09-16T16:04:35","modified_gmt":"2026-09-16T08:04:35","slug":"pxie-8280","status":"publish","type":"product","link":"https:\/\/pxisource.com\/ru\/product\/pxie-8280\/","title":{"rendered":"PXIe-8280"},"content":{"rendered":"<h3>PXIe-8280 50 Gigabit RDMA PXI Ethernet Interface Module<\/h3>\n<p>\u0417\u0435\u043c\u043b\u044f <strong>PXIe-8280<\/strong> is a single-port, 50 Gigabit PXI Express Ethernet interface module designed for high-throughput data transfer between PXI systems, external servers, storage devices and other RDMA-compatible systems. It provides one QSFP28 Ethernet port and supports Remote Direct Memory Access over Converged Ethernet version 2, commonly known as RoCE v2.<\/p>\n<p>The module connects to the PXI Express chassis backplane through a PCI Express Gen3 \u00d78 link. This high-bandwidth interface allows measurement data to be moved from the PXI system to an external processing or storage system with low latency and reduced processor involvement.<\/p>\n<p>The PXIe-8280 is useful in data-intensive applications such as high-speed waveform acquisition, radar testing, wireless research, spectrum monitoring, electronic warfare validation, multi-chassis data aggregation and distributed test systems.<\/p>\n<h3>Key Features of the PXIe-8280<\/h3>\n<ul>\n<li>One 50 Gigabit Ethernet port<\/li>\n<li>QSFP28 front-panel connector<\/li>\n<li>Up to 50 GbE link speed<\/li>\n<li>Remote Direct Memory Access support<\/li>\n<li>RoCE v2 network protocol support<\/li>\n<li>PCI Express Gen3 \u00d78 backplane connection<\/li>\n<li>NVIDIA ConnectX Ethernet controller architecture<\/li>\n<li>Compatible with active optical QSFP28 cables<\/li>\n<li>Compatible with passive direct-attach copper QSFP28 cables<\/li>\n<li>Low-latency system-to-system data transfer<\/li>\n<li>Reduces CPU involvement during data movement<\/li>\n<li>Supports PXI-to-server data offload<\/li>\n<li>Supports PXI-to-storage data transfer<\/li>\n<li>Enables data exchange between multiple PXI systems<\/li>\n<li>One-slot 3U PXI Express module<\/li>\n<li>Windows and NI Linux Real-Time driver support<\/li>\n<\/ul>\n<h3>PXIe-8280 Technical Specifications<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Product Model<\/th>\n<td>PXIe-8280<\/td>\n<\/tr>\n<tr>\n<th>Part Number<\/th>\n<td>788261-01<\/td>\n<\/tr>\n<tr>\n<th>Product Type<\/th>\n<td>PXI Express RDMA Ethernet interface module<\/td>\n<\/tr>\n<tr>\n<th>Number of Ethernet Ports<\/th>\n<td>1<\/td>\n<\/tr>\n<tr>\n<th>Port Name<\/th>\n<td>ETH 0<\/td>\n<\/tr>\n<tr>\n<th>Front-Panel Connector<\/th>\n<td>QSFP28<\/td>\n<\/tr>\n<tr>\n<th>Maximum Ethernet Rate<\/th>\n<td>50 GbE<\/td>\n<\/tr>\n<tr>\n<th>RDMA Protocol<\/th>\n<td>RDMA over Converged Ethernet version 2, RoCE v2<\/td>\n<\/tr>\n<tr>\n<th>Ethernet Controller<\/th>\n<td>NVIDIA ConnectX-based Ethernet adapter<\/td>\n<\/tr>\n<tr>\n<th>PXI Express Link<\/th>\n<td>PCI Express Gen3 \u00d78<\/td>\n<\/tr>\n<tr>\n<th>Compatible Network Cables<\/th>\n<td>Mellanox-compatible active optical or passive direct-attach copper QSFP28<\/td>\n<\/tr>\n<tr>\n<th>Windows Driver Support<\/th>\n<td>PXI Platform Services, Mellanox WinOF-2 and NI-RDMA<\/td>\n<\/tr>\n<tr>\n<th>NI Linux Real-Time Support<\/th>\n<td>PXI Platform Services and NI-RDMA<\/td>\n<\/tr>\n<tr>\n<th>Earliest PXI Platform Services Version<\/th>\n<td>21.5<\/td>\n<\/tr>\n<tr>\n<th>Earliest NI-RDMA Version<\/th>\n<td>21.5<\/td>\n<\/tr>\n<tr>\n<th>Earliest Mellanox WinOF-2 Version<\/th>\n<td>2.70.51000<\/td>\n<\/tr>\n<tr>\n<th>Maximum Power with Passive Cable<\/th>\n<td>27.52 W<\/td>\n<\/tr>\n<tr>\n<th>Maximum Power with Optical Cable<\/th>\n<td>30.02 W<\/td>\n<\/tr>\n<tr>\n<th>Required Chassis Slot Cooling<\/th>\n<td>At least 58 W<\/td>\n<\/tr>\n<tr>\n<th>Module Format<\/th>\n<td>3U, one-slot PXI Express peripheral module<\/td>\n<\/tr>\n<tr>\n<th>Compatible Slot Types<\/th>\n<td>PXI Express peripheral or hybrid peripheral slot<\/td>\n<\/tr>\n<tr>\n<th>Dimensions<\/th>\n<td>131 \u00d7 21 \u00d7 214 mm<\/td>\n<\/tr>\n<tr>\n<th>Weight<\/th>\n<td>275 g<\/td>\n<\/tr>\n<tr>\n<th>Operating Temperature<\/th>\n<td>0\u00b0C to 55\u00b0C, subject to chassis cooling performance<\/td>\n<\/tr>\n<tr>\n<th>Storage Temperature<\/th>\n<td>-40\u00b0C to 71\u00b0C<\/td>\n<\/tr>\n<tr>\n<th>Operating Humidity<\/th>\n<td>10% to 90%, noncondensing<\/td>\n<\/tr>\n<tr>\n<th>Storage Humidity<\/th>\n<td>5% to 95%, noncondensing<\/td>\n<\/tr>\n<tr>\n<th>Maximum Altitude<\/th>\n<td>2,000 m<\/td>\n<\/tr>\n<tr>\n<th>Operating Shock<\/th>\n<td>30 g peak, half-sine, 11 ms pulse<\/td>\n<\/tr>\n<tr>\n<th>Operating Vibration<\/th>\n<td>5 Hz to 500 Hz, 0.3 g RMS<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>PXIe-8280 Part Number and Required Components<\/h3>\n<table>\n<tbody>\n<tr>\n<th>Item<\/th>\n<th>Part Number or Type<\/th>\n<th>\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/th>\n<\/tr>\n<tr>\n<td>PXIe-8280<\/td>\n<td>788261-01<\/td>\n<td>Single-port 50 Gigabit RDMA PXI Ethernet interface module<\/td>\n<\/tr>\n<tr>\n<td>QSFP28 Active Optical Cable<\/td>\n<td>Mellanox-compatible<\/td>\n<td>Provides longer-distance optical 50 GbE connectivity<\/td>\n<\/tr>\n<tr>\n<td>QSFP28 Direct-Attach Copper Cable<\/td>\n<td>Mellanox-compatible<\/td>\n<td>Provides short-distance passive copper connectivity<\/td>\n<\/tr>\n<tr>\n<td>\u0428\u0430\u0441\u0441\u0438 PXI Express<\/td>\n<td>58 W or greater slot cooling<\/td>\n<td>Provides the required PXI Express interface, power and cooling<\/td>\n<\/tr>\n<tr>\n<td>PXI \u041a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440<\/td>\n<td>Windows or NI Linux Real-Time<\/td>\n<td>Runs the measurement and data-transfer application<\/td>\n<\/tr>\n<tr>\n<td>NI-RDMA Driver<\/td>\n<td>Version 21.5 or later<\/td>\n<td>Provides RDMA communication between compatible systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The PXIe-8280 module package includes the hardware module and safety, environmental and regulatory documentation. The PXI Express chassis, controller, QSFP28 cable and required software are normally selected separately.<\/p>\n<h3>50 Gigabit Ethernet Connectivity<\/h3>\n<p>The PXIe-8280 provides one Ethernet connection supporting link speeds up to 50 Gb\/s. This bandwidth makes it suitable for transferring data generated by high-speed digitizers, RF instruments, FlexRIO modules and other data-intensive PXI hardware.<\/p>\n<p>The 50 GbE link rate represents the network signaling rate. Application-level data throughput will be lower because of Ethernet framing, RDMA protocol overhead, memory performance, PCI Express bandwidth, controller resources and the performance of the remote endpoint.<\/p>\n<h3>QSFP28 Ethernet Port<\/h3>\n<p>The ETH 0 connection uses a QSFP28 port. It accepts a compatible active optical cable or passive direct-attach copper cable.<\/p>\n<p>Passive copper cables are commonly used for short connections within the same rack or between adjacent systems. Active optical cables are more suitable when longer transmission distance, lower cable weight or improved electrical isolation is required.<\/p>\n<p>Verify that the selected cable is compatible with the NVIDIA or Mellanox-based network interface and supports the required 50 GbE operating mode.<\/p>\n<h3>RDMA Technology<\/h3>\n<p>Remote Direct Memory Access allows one system to transfer data directly to or from memory in another compatible system with reduced CPU involvement. This differs from conventional socket-based Ethernet communication, where the operating system and processor may copy data through several software buffers.<\/p>\n<p>Reducing memory copies and processor intervention can provide lower latency, more predictable transfer behavior and greater data-transfer efficiency.<\/p>\n<p>The PXIe-8280 supports RDMA over Converged Ethernet version 2. RoCE v2 carries RDMA traffic over routable UDP\/IP networks, subject to correct network and endpoint configuration.<\/p>\n<h3>RoCE v2 Support<\/h3>\n<p>RoCE v2 allows RDMA communication across compatible Ethernet infrastructure. Both endpoints must support RoCE v2 and be configured for the same network parameters.<\/p>\n<p>Depending on the network design, lossless Ethernet settings, priority flow control, appropriate switch configuration and suitable packet-size settings may be required to achieve reliable high-throughput performance.<\/p>\n<p>A normal Ethernet connection alone does not guarantee RDMA operation. The driver, remote interface, network switch and application must all support the required RDMA workflow.<\/p>\n<h3>PCI Express Gen3 \u00d78 Backplane Link<\/h3>\n<p>The PXIe-8280 connects to the PXI Express backplane through a PCI Express Gen3 \u00d78 link. This interface provides the internal bandwidth required to move data between the Ethernet controller and the PXI system.<\/p>\n<p>Install the module in a slot that supplies the required PCI Express link resources. Overall throughput can be limited if the chassis routes several high-bandwidth slots through a shared upstream PCI Express link.<\/p>\n<p>Review the chassis PCI Express topology when designing a system containing multiple digitizers, storage modules and high-speed Ethernet interfaces.<\/p>\n<h3>NVIDIA ConnectX Ethernet Architecture<\/h3>\n<p>The module incorporates an NVIDIA ConnectX-based Ethernet adapter. The ConnectX controller manages Ethernet communication, RDMA processing and the QSFP28 interface.<\/p>\n<p>On Windows systems, the Ethernet controller requires a compatible Mellanox WinOF-2 driver in addition to PXI Platform Services and NI-RDMA. Driver versions should be validated together before deploying or upgrading a production system.<\/p>\n<h3>PXI-to-Server Data Transfer<\/h3>\n<p>The PXIe-8280 can transfer acquired data from a PXI Express system to an external server for storage, post-processing or further analysis.<\/p>\n<p>This architecture is useful when the PXI controller does not provide enough local processor, GPU or storage capacity for the application. The PXI system performs the measurement while the remote server receives and processes the resulting data.<\/p>\n<h3>External Storage Integration<\/h3>\n<p>High-speed digitizers and RF instruments can generate large volumes of waveform data. The PXIe-8280 can provide a network path to an RDMA-compatible storage server or data-recording system.<\/p>\n<p>The sustained recording rate depends on the network connection and the destination storage subsystem. A 50 GbE link alone cannot compensate for slow disks, insufficient memory bandwidth or an underpowered storage controller.<\/p>\n<p>NVMe arrays or other high-throughput storage architectures may be required for continuous recording near the available network rate.<\/p>\n<h3>PXI-to-PXI Data Exchange<\/h3>\n<p>Two or more PXI Express systems equipped with compatible RDMA interfaces can exchange data over Ethernet. This allows measurement tasks to be distributed across several chassis.<\/p>\n<p>One chassis may contain high-speed acquisition instruments, while another contains FPGA processing, signal generation or data-storage hardware. RDMA provides a low-latency method for moving data between these systems.<\/p>\n<h3>Multi-Chassis Data Aggregation<\/h3>\n<p>Large test systems may use several PXI Express chassis because one chassis cannot hold every required instrument. The PXIe-8280 allows data from these chassis to be transferred to a central server or aggregation system.<\/p>\n<p>This architecture is useful for large channel-count acquisition, radar testing, distributed RF monitoring, semiconductor characterization and systems containing instruments at several physical locations.<\/p>\n<h3>CPU Offload<\/h3>\n<p>Conventional network transfers can require the CPU to manage socket operations and copy data between application, operating-system and network buffers. RDMA transfers can reduce this overhead by moving data more directly between registered memory regions.<\/p>\n<p>CPU offload leaves more processing capacity available for test sequencing, measurement analysis, visualization and control. Actual CPU savings depend on the application and transfer implementation.<\/p>\n<h3>Low-Latency Data Movement<\/h3>\n<p>The combination of RoCE v2 and a PCI Express Gen3 \u00d78 connection makes the PXIe-8280 suitable for applications where transfer latency is important.<\/p>\n<p>Examples include distributed signal processing, real-time monitoring, event-driven data exchange and high-speed communication between measurement and analysis systems.<\/p>\n<p>Network switches, cable length, endpoint configuration and software buffering still contribute to end-to-end latency.<\/p>\n<h3>Windows Software Support<\/h3>\n<p>A Windows PXIe-8280 system requires PXI Platform Services, Mellanox WinOF-2 and NI-RDMA. NI lists version 21.5 as the earliest supported version for PXI Platform Services and NI-RDMA.<\/p>\n<p>The earliest listed Mellanox WinOF-2 version is 2.70.51000. NI recommends installing compatible current driver versions supported by the operating system and complete PXI application.<\/p>\n<h3>NI Linux Real-Time Support<\/h3>\n<p>The PXIe-8280 can also operate with a compatible NI Linux Real-Time PXI controller. NI Linux Real-Time systems require PXI Platform Services and NI-RDMA.<\/p>\n<p>A real-time controller can combine deterministic test execution with high-speed network data transfer. However, network communication itself is still affected by endpoint, switch and traffic conditions.<\/p>\n<h3>NI-RDMA Programming<\/h3>\n<p>The NI-RDMA driver provides the programming interface used to exchange data between compatible systems. Applications register memory buffers, create communication endpoints and initiate data transfers through the supported API.<\/p>\n<p>The sending and receiving systems must agree on buffer sizes, data formats, transfer order and error-handling behavior. Applications should monitor connection status, completion events and transfer errors.<\/p>\n<h3>Network Architecture Requirements<\/h3>\n<p>For a direct connection, a compatible QSFP28 cable can connect the PXIe-8280 to another suitable 50 GbE RDMA interface. Switched systems require an Ethernet switch supporting the required port speed and network configuration.<\/p>\n<p>Before deployment, verify:<\/p>\n<ul>\n<li>50 GbE compatibility at both endpoints<\/li>\n<li>RoCE v2 support<\/li>\n<li>QSFP28 cable compatibility<\/li>\n<li>IP addressing and subnet configuration<\/li>\n<li>MTU and jumbo-frame configuration<\/li>\n<li>Switch flow-control settings<\/li>\n<li>Memory and storage throughput<\/li>\n<li>Firewall and network-security policies<\/li>\n<\/ul>\n<h3>Jumbo Frame Considerations<\/h3>\n<p>Larger Ethernet frames can reduce packet-processing overhead during bulk data transfer. If jumbo frames are used, every component in the path must support and use a compatible maximum transmission unit.<\/p>\n<p>An MTU mismatch can cause failed communication, fragmentation or reduced performance. Validate the complete path from the PXIe-8280 through any network switches to the remote endpoint.<\/p>\n<h3>Active Optical Cable Operation<\/h3>\n<p>An active optical QSFP28 cable converts the high-speed electrical interface to optical signals within the connector assemblies. Optical cables can support longer distances and are generally lighter than equivalent long copper assemblies.<\/p>\n<p>Using an optical cable increases the module\u2019s maximum power consumption to approximately 30.02 W. Confirm cable compatibility and the chassis cooling capability before installation.<\/p>\n<h3>Passive Direct-Attach Copper Operation<\/h3>\n<p>A passive direct-attach copper cable provides a cost-effective connection over relatively short distances. It does not require the optical conversion circuitry used in an active optical cable.<\/p>\n<p>Maximum module power with a passive cable is approximately 27.52 W. Copper cables can be heavier and less flexible, so provide appropriate strain relief without applying directional force to the QSFP28 connector.<\/p>\n<h3>Chassis Cooling Requirements<\/h3>\n<p>The PXIe-8280 requires a chassis slot with at least 58 W of cooling capacity. This requirement is higher than the module\u2019s electrical power consumption because sufficient airflow must remove heat from the Ethernet controller and associated components.<\/p>\n<p>Not every chassis rated for 58 W cooling can maintain the module\u2019s full 0\u00b0C to 55\u00b0C operating range. Review the specific chassis documentation for slot cooling and ambient-temperature limitations.<\/p>\n<p>Use slot blockers and filler panels according to the chassis instructions to direct airflow through installed modules.<\/p>\n<h3>Compatible PXI Express Slots<\/h3>\n<p>The PXIe-8280 occupies one 3U PXI Express slot. It can be installed in a PXI Express peripheral slot or compatible hybrid peripheral slot.<\/p>\n<p>It cannot be installed in a conventional PXI-only slot. The selected slot must also provide the required PCI Express bandwidth and chassis cooling.<\/p>\n<h3>Front-Panel Status Indicators<\/h3>\n<p>The front panel provides SPEED and LINK\/ACT indicators for checking the Ethernet connection.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Indicator<\/th>\n<th>Status<\/th>\n<th>Meaning<\/th>\n<\/tr>\n<tr>\n<td>SPEED<\/td>\n<td>Off<\/td>\n<td>No Ethernet link is established<\/td>\n<\/tr>\n<tr>\n<td>SPEED<\/td>\n<td>Green<\/td>\n<td>The connection is operating at 50 GbE<\/td>\n<\/tr>\n<tr>\n<td>SPEED<\/td>\n<td>Amber<\/td>\n<td>The established connection is below 50 GbE<\/td>\n<\/tr>\n<tr>\n<td>LINK\/ACT<\/td>\n<td>Off<\/td>\n<td>No network link<\/td>\n<\/tr>\n<tr>\n<td>LINK\/ACT<\/td>\n<td>Green<\/td>\n<td>Link established with no current activity<\/td>\n<\/tr>\n<tr>\n<td>LINK\/ACT<\/td>\n<td>Blinking Green<\/td>\n<td>Link established with network activity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Typical PXIe-8280 Applications<\/h3>\n<ul>\n<li>High-speed measurement-data offload<\/li>\n<li>PXI-to-server waveform streaming<\/li>\n<li>PXI-to-external-storage data recording<\/li>\n<li>Distributed PXI test systems<\/li>\n<li>Multi-chassis data exchange<\/li>\n<li>Large channel-count data aggregation<\/li>\n<li>Radar and electronic warfare testing<\/li>\n<li>Wideband RF spectrum monitoring<\/li>\n<li>High-speed digitizer data transfer<\/li>\n<li>Wireless communication research<\/li>\n<li>\u0412\u0430\u043b\u0438\u0434\u0430\u0446\u0438\u044f \u043f\u043e\u043b\u0443\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u0438\u043a\u043e\u0432<\/li>\n<li>Scientific data acquisition<\/li>\n<li>Remote signal processing<\/li>\n<li>Automated production testing<\/li>\n<\/ul>\n<h3>High-Speed Digitizer Streaming<\/h3>\n<p>A PXI Express digitizer can acquire waveform data and transfer it through the controller memory to the PXIe-8280 for delivery to another system. RDMA helps reduce the CPU overhead associated with moving large data buffers over Ethernet.<\/p>\n<p>Continuous streaming performance depends on the digitizer rate, PCI Express topology, controller memory bandwidth and remote receiving system.<\/p>\n<h3>RF and Spectrum Monitoring<\/h3>\n<p>Wideband RF instruments can produce large streams of complex I\/Q samples. The PXIe-8280 can move this data to a server containing additional CPUs, GPUs or storage resources.<\/p>\n<p>This architecture allows the PXI system to remain close to the RF front end while computationally intensive analysis is performed on a remote system.<\/p>\n<h3>Radar and Electronic Warfare Systems<\/h3>\n<p>Radar and electronic warfare validation can require simultaneous capture of wideband signals and rapid transfer to external processing hardware. The 50 GbE RDMA connection provides a suitable data-movement interface for these demanding applications.<\/p>\n<p>End-to-end performance must be validated using the actual instruments, record sizes, processing algorithms and network configuration.<\/p>\n<h3>PXIe-8280 Installation Workflow<\/h3>\n<h4>Step 1: Verify Chassis Compatibility<\/h4>\n<p>Confirm that the selected PXI Express or hybrid peripheral slot provides the required PCI Express resources and at least 58 W of cooling capacity.<\/p>\n<h4>Step 2: Install the Drivers<\/h4>\n<p>Install PXI Platform Services and NI-RDMA. For Windows systems, also install a compatible Mellanox WinOF-2 driver.<\/p>\n<h4>Step 3: Install the Module<\/h4>\n<p>Power off the chassis, insert the PXIe-8280 into the selected slot and secure both front-panel mounting screws.<\/p>\n<h4>Step 4: Connect the QSFP28 Cable<\/h4>\n<p>Attach a compatible passive copper or active optical QSFP28 cable to ETH 0 and provide strain relief near the connector.<\/p>\n<h4>Step 5: Configure the Network<\/h4>\n<p>Configure the IP address, subnet, MTU and applicable RoCE v2 network settings on both endpoints.<\/p>\n<h4>Step 6: Verify the Link<\/h4>\n<p>Check the SPEED and LINK\/ACT indicators. A green SPEED LED confirms a 50 GbE link, while an amber LED indicates a lower negotiated speed.<\/p>\n<h4>Step 7: Test RDMA Transfer<\/h4>\n<p>Run a controlled transfer between the PXI system and remote endpoint, then verify throughput, latency, buffer integrity and error handling.<\/p>\n<h3>PXIe-8280 Troubleshooting<\/h3>\n<h4>The PXIe-8280 is not detected<\/h4>\n<p>Confirm that the module is fully installed in a PXI Express or hybrid peripheral slot. Check chassis power, controller communication and PXI Platform Services installation.<\/p>\n<h4>The SPEED LED is off<\/h4>\n<p>No Ethernet connection has been established. Inspect the QSFP28 cable, verify that the remote endpoint is powered and confirm port and transceiver compatibility.<\/p>\n<h4>The SPEED LED is amber<\/h4>\n<p>The Ethernet connection is operating below 50 GbE. Check the remote interface, cable capability, network-switch configuration and manually configured link-speed settings.<\/p>\n<h4>The LINK\/ACT LED does not blink<\/h4>\n<p>A steady green indicator means a link exists but no traffic is currently detected. Verify IP configuration, application operation and RDMA endpoint settings.<\/p>\n<h4>Standard Ethernet works but RDMA does not<\/h4>\n<p>Confirm that NI-RDMA is installed on supported systems and that both endpoints support RoCE v2. Review switch flow control, firewall, MTU and RDMA network settings.<\/p>\n<h4>Data throughput is lower than expected<\/h4>\n<p>Check the PXI Express slot topology, cable link speed, MTU, transfer-buffer size, controller memory bandwidth and remote storage performance. Small transfers may not use the available network bandwidth efficiently.<\/p>\n<h4>Data packets are lost under heavy load<\/h4>\n<p>Review network-switch buffering, priority flow control, congestion management and receiving-buffer configuration. Validate that the destination application processes incoming data fast enough.<\/p>\n<h4>The module becomes too hot<\/h4>\n<p>Verify that the chassis provides at least 58 W of slot cooling. Increase the fan setting where supported and install filler panels or slot blockers in empty slots.<\/p>\n<h4>The optical cable is not recognized<\/h4>\n<p>Confirm that the cable is Mellanox-compatible and supports the intended 50 GbE mode. Inspect the QSFP28 connectors and check the Ethernet driver diagnostics.<\/p>\n<h4>RDMA stopped working after a driver update<\/h4>\n<p>Verify compatibility between NI-RDMA, PXI Platform Services, Mellanox WinOF-2 and the operating system. Restore a validated driver combination if the problem began after an upgrade.<\/p>\n<h3>PXIe-8280 Comparison with Related PXI Ethernet Interfaces<\/h3>\n<table>\n<tbody>\n<tr>\n<th>\u041c\u043e\u0434\u0435\u043b\u044c<\/th>\n<th>Ethernet Configuration<\/th>\n<th>Primary Advantage<\/th>\n<\/tr>\n<tr>\n<td>PXIe-8280<\/td>\n<td>1 \u00d7 QSFP28, up to 50 GbE<\/td>\n<td>Maximum bandwidth through one physical port<\/td>\n<\/tr>\n<tr>\n<td>PXIe-8285<\/td>\n<td>2 \u00d7 SFP28, up to 25 GbE per port<\/td>\n<td>Two independently accessible Ethernet connections<\/td>\n<\/tr>\n<tr>\n<td>PXIe-8521<\/td>\n<td>Automotive Ethernet interface<\/td>\n<td>Automotive network testing and communication<\/td>\n<\/tr>\n<tr>\n<td>Standard Gigabit Ethernet<\/td>\n<td>RJ45, typically 1 GbE<\/td>\n<td>General instrument and network connectivity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>PXIe-8280 vs PXIe-8285<\/h3>\n<p>\u0417\u0435\u043c\u043b\u044f <a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8285\/\">PXIe-8285<\/a> provides two SFP28 ports operating at up to 25 GbE per port. The PXIe-8280 provides one QSFP28 port supporting up to 50 GbE.<\/p>\n<p>Choose the PXIe-8280 when the application requires a single 50 GbE connection. Choose the PXIe-8285 when two separate 25 GbE connections, redundant paths or connection to two endpoints is more important.<\/p>\n<h3>PXIe-8280 vs Standard Ethernet Interface<\/h3>\n<p>A standard Ethernet adapter is sufficient for instrument control, configuration and moderate data transfer. The PXIe-8280 is designed for data-intensive applications requiring substantially higher bandwidth and RDMA support.<\/p>\n<p>RDMA capability is particularly valuable when large waveform buffers must be moved repeatedly with reduced CPU overhead and latency.<\/p>\n<h3>PXIe-8280 vs PXI Remote Control Module<\/h3>\n<p>The PXIe-8280 is a network and data-movement interface. It does not replace a PXI embedded controller or a remote-control MXI interface.<\/p>\n<p>A remote-control module extends the PCI Express bus so an external computer controls the PXI chassis. The PXIe-8280 transfers application data over Ethernet between systems that already have their own controller or host architecture.<\/p>\n<h3>Recommended Related Products<\/h3>\n<ul>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8285\/\">PXIe-8285 Two-Port 25 Gigabit RDMA Ethernet Module<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8521\/\">PXIe-8521 Automotive Ethernet Interface Module<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8374\/\">PXIe-8374 PXI Express Remote Control Module<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8383\/\">PXIe-8383 PXI Express Remote Control Module<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-1085\/\">PXIe-1085 PXI Express Chassis<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-1092\/\">PXIe-1092 PXI Express Chassis<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/%d0%bf%d1%8c%d0%b5-1095\/\">PXIe-1095 High-Performance PXI Express Chassis<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8842\/\">PXIe-8842 Embedded Controller<\/a><\/li>\n<li><a href=\"https:\/\/pxisource.com\/ru\/product\/pxie-8862\/\">PXIe-8862 Embedded Controller<\/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\/%d0%bc%d0%be%d0%b4%d1%83%d0%bb%d0%b8-pxi\/\">View More NI PXI and PXI Express Modules<\/a><\/li>\n<\/ul>\n<h3>Selecting the Right PXI Data-Movement Interface<\/h3>\n<p>Choose the PXIe-8280 when the system requires one high-bandwidth 50 GbE connection and RoCE v2 RDMA. It is particularly suitable for offloading large measurement buffers to a server or high-speed storage system.<\/p>\n<p>Select the PXIe-8285 when two 25 GbE ports provide a better network topology. Choose a PXI remote-control interface when the objective is to control a chassis from an external computer rather than exchange measurement data between independent systems.<\/p>\n<p>Before ordering, confirm the QSFP28 cable type, remote endpoint, network-switch capabilities, operating system, driver versions, chassis slot bandwidth and 58 W cooling requirement.<\/p>\n<h3>Why Choose the PXIe-8280?<\/h3>\n<ul>\n<li>Provides a high-bandwidth 50 GbE connection<\/li>\n<li>Supports low-latency RoCE v2 RDMA transfers<\/li>\n<li>Reduces processor involvement during data movement<\/li>\n<li>Uses a standard QSFP28 physical interface<\/li>\n<li>Supports passive copper and active optical cables<\/li>\n<li>Connects through PCI Express Gen3 \u00d78<\/li>\n<li>Supports external servers and storage systems<\/li>\n<li>Enables PXI-to-PXI data exchange<\/li>\n<li>Supports distributed and multi-chassis testing<\/li>\n<li>Works with Windows and NI Linux Real-Time systems<\/li>\n<li>Occupies only one PXI Express chassis slot<\/li>\n<\/ul>\n<h3>Frequently Asked Questions<\/h3>\n<h4>What is the PXIe-8280?<\/h4>\n<p>The PXIe-8280 is a one-port, 50 Gigabit PXI Express Ethernet interface module that supports RoCE v2 RDMA for high-speed data movement.<\/p>\n<h4>What is the maximum Ethernet speed?<\/h4>\n<p>The ETH 0 QSFP28 connection supports link speeds up to 50 GbE.<\/p>\n<h4>How many Ethernet ports are provided?<\/h4>\n<p>The PXIe-8280 provides one QSFP28 Ethernet port.<\/p>\n<h4>What is RDMA?<\/h4>\n<p>Remote Direct Memory Access is a data-transfer method that moves data between registered memory regions in separate systems with reduced CPU involvement and fewer software copies.<\/p>\n<h4>Which RDMA protocol does the module support?<\/h4>\n<p>The PXIe-8280 supports RDMA over Converged Ethernet version 2, also called RoCE v2.<\/p>\n<h4>Which cables are compatible?<\/h4>\n<p>The module accepts Mellanox-compatible active optical or passive direct-attach copper QSFP28 cables.<\/p>\n<h4>What is the PXI Express backplane connection?<\/h4>\n<p>The module connects to the PXI Express backplane through a PCI Express Gen3 \u00d78 link.<\/p>\n<h4>Can it connect two PXI systems?<\/h4>\n<p>Yes. Compatible RDMA-equipped PXI systems can exchange or aggregate data over a direct or switched Ethernet connection.<\/p>\n<h4>Can it replace a PXI controller?<\/h4>\n<p>No. The PXIe-8280 is a network data-movement interface and does not replace the PXI system controller.<\/p>\n<h4>Can it be used with an external storage server?<\/h4>\n<p>Yes. Data offload to compatible servers and storage systems is one of its primary applications. The destination must provide sufficient network and storage performance.<\/p>\n<h4>What cooling capacity is required?<\/h4>\n<p>The selected PXI Express chassis slot must provide at least 58 W of cooling capacity.<\/p>\n<h4>Which software is required on Windows?<\/h4>\n<p>A Windows system requires PXI Platform Services, Mellanox WinOF-2 and NI-RDMA.<\/p>\n<h4>Does the PXIe-8280 support NI Linux Real-Time?<\/h4>\n<p>Yes. Compatible NI Linux Real-Time systems can use PXI Platform Services and NI-RDMA with the module.<\/p>\n<h4>What does a green SPEED LED mean?<\/h4>\n<p>A green SPEED indicator means that the Ethernet connection is operating at the maximum 50 GbE link speed.<\/p>\n<h4>What does an amber SPEED LED mean?<\/h4>\n<p>An amber SPEED indicator means a link is established, but its negotiated rate is lower than 50 GbE.<\/p>\n<h4>What is the PXIe-8280 part number?<\/h4>\n<p>The standard NI part number for the PXIe-8280 is <strong>788261-01<\/strong>.<\/p>\n<h3>Request a Quote for the PXIe-8280<\/h3>\n<p>Contact us for current availability, lead time and project pricing for the <strong>PXIe-8280 One-Port 50 Gigabit RDMA PXI Ethernet Interface Module<\/strong>. Please provide the required cable type, cable length, operating system, PXI chassis and remote-endpoint configuration when requesting a quotation.<\/p>","protected":false},"excerpt":{"rendered":"<p>PXIe-8280 50 Gigabit RDMA PXI Ethernet Interface Module The PXIe-8280 is a single-port, 50 Gigabit PXI Express Ethernet interface module<\/p>","protected":false},"featured_media":31852,"template":"","meta":{"_acf_changed":false},"product_brand":[18],"product_cat":[733],"product_tag":[],"class_list":["post-34729","product","type-product","status-publish","has-post-thumbnail","product_brand-national-instruments","product_cat-pxi-gpib-ethernet-and-vxi","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 v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NI PXIe-8280 PXI Ethernet Interface Module 788261-01, In Stock | Project 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