Product Introduction

The NI PXIe-7966R is a 3U single-slot PXIe FlexRIO high-performance programmable FPGA module, with the core being Xilinx Virtex-5 SX95T (speed grade - 2). It has onboard 512 MB DDR2 (2×256 MB independent Banks). Compared to 7965R, it features a higher speed grade FPGA with stronger computing and timing performance, suitable for high-complexity real-time signal processing, high-speed data streams and low-latency interaction scenarios. It is applicable to radio frequency communication, semiconductor testing, MRI imaging, high-speed acquisition and research prototype development.

Model Interpretation

PXIe: PXI Express Gen1 x4 bus, 3U single slot, compatible with x4/x8/x16 mixed slots.

7966: FlexRIO FPGA series, 66 represents Virtex-5 SX95T-2 and 512 MB DDR2, a high-performance model.

R: Reconfigurable I/O, allowing users to customize FPGA logic, I/O and timing, and hardware reprogramming. Technical Specifications

FPGA Core

Chip: Xilinx Virtex-5 SX95T-2 (High-Speed Version), 58,880 LUTs/Triggers, 640 DSP48 slices, 8784 Kb Block RAM.

Development: Supports LabVIEW FPGA, C/C++, Python, hardware filtering, FFT, modulation demodulation, protocol parsing, DDC, etc.

Onboard Memory

Capacity: 512 MB DDR2 (2×256 MB Independent Bank).

Bandwidth: Single Bank Peak 1.6 GB/s, Total Peak 3.2 GB/s, Supports Local Cache, Frame Storage, Burst Processing.

Bus and Throughput

PXIe: x4 Gen1, Bidirectional 1.4 GB/s, Unidirectional > 700 MB/s.

DMA: 16 Independent Channels, Maximum 800 MB/s per module.

P2P: Supports Multi-Module Point-to-Point Transmission, Microsecond-level Delay, No Host Intermediate.

Clock: PXI_CLK10, 100 MHz PXIe Reference Clock, 40 MHz Onboard Clock, Multi-Region Clock Input.

Digital I/O

Channels: 132 Single-ended, Can be Configured with 66 Differential Pairs.

Rates: Single-ended 400 Mb/s, LVDS Differential 1 Gb/s.

Levels: 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V, LVDS/LVTTL.

Trigger: Star Trigger, D-Star LVDS Trigger, Multi-Module Synchronization.

Physics and Environment

Size: 3U Standard (16.1 cm×10.8 cm, without connectors).

Weight: Approximately 220 g.

Power Consumption: +3.3 V 3 A, +12 V 2.2 A (including adapter).

Operating Temperature: 0–55 ℃, Industrial-grade Stable Operation.

Host Bus

PXIe x4 Gen1, Access Backplane Clock, Star Trigger, D-Star Trigger, Cabinet Internal Synchronization and Data Routing.

Front Panel

High-density Edge Connectors, Dedicated FlexRIO Adapter Interface, Connect to NI 5791/5734 and other RF/A/D/DI Adapters, Expand RF/A/D/I/O, No Independent Signal Ports on Module Body.

Drivers and Software

Drivers: NI-FlexRIO, NI-DAQmx, IVI Standard, NI-MAX Configuration Self-Check.

Programming: LabVIEW FPGA, C/C++, Python, Complete API for FPGA Development, I/O Configuration, P2P Routing, Trigger Control.

Core Functions

High-Speed FPGA Acceleration: SX95T-2 High-Speed Grade, Hardwareization of Complex Algorithms, Low Latency High Throughput.

Large Capacity Local Cache: 512 MB DDR2 Shares Bus Pressure, Long Time Series Acquisition and Batch Processing.

High-Speed Configurable I/O: 132 Multi-Level/Differential, Parallel Testing and High-Speed Digital Interaction.

Low-Latency P2P Transmission: Direct Intercommunication between Modules, Microsecond-level Delay, Multi-Channel Synchronous System.

Precise Synchronization: PXI Clock/Trigger Resources, Multi-Device Picosecond-Level Timing Alignment.

Flexible Expansion: Combined with FlexRIO Adapter, Expand RF/Analog/Specific Digital Interface. Applicable scenarios

Radio Frequency and Wireless Communication: Radar, 5G/6G baseband real-time processing, modulation and demodulation, beamforming, MIMO prototype.

Semiconductor Testing: High-speed digital testing, protocol analysis, parallel testing, timing verification.

Medical Imaging: MRI receiver, real-time DDC and signal processing.

High-speed Image Acquisition: Front-end real-time preprocessing to reduce backend pressure.

Industrial Control: Hardware real-time bus, high-precision motion control, improving response speed.

Research Prototypes: Algorithm verification, signal processing and communication architecture hardware implementation, rapid iteration.

Usage and Maintenance Use

Disconnect the power supply, insert the 3U PXIe chassis, tighten the screws, and strictly prohibit hot plugging. It is also necessary to prevent static electricity. The adapter should also be disconnected for connection and locked. NI-MAX identifies the configuration of I/O levels, clocks, and triggers, and downloads the FPGA program. Multiple modules synchronize with a unified reference clock, configure P2P routing and triggers, and verify the synchronization accuracy. Maintenance

Regularly wipe the module and connectors with a dry cloth, remove dust to maintain good contact, and strictly avoid contact with liquids. Update the driver and firmware of NI-MAX regularly. Store it for a long time in a dry environment at -20 to 60 ℃ with humidity less than 60%, and seal it in an anti-static package. For abnormalities, first check the power supply, adapter, and software configuration; for transmission/logic abnormalities, troubleshoot the FPGA program, channel parameters, and P2P routing.