NI PXI-6561 LVDS Digital Waveform Generator / Analyzer

The NI PXI-6561 is a 16-channel digital waveform generator and analyzer module designed for LVDS (Low-Voltage Differential Signaling) applications. Operating at rates up to 100 MHz, this instrument combines precise timing control with flexible memory architecture to support both single-waveform and scripted generation modes. The module integrates with PXI Express hybrid-slot chassis and is controlled via NI-HSDIO driver software, making it suitable for digital communication testing, semiconductor characterization, and high-pin-count IC validation in aerospace and defense environments.

– Technical Specifications

• Channels: 16
• Maximum Clock Rate: 100 MHz
• Onboard Clock Frequency Range: 48 Hz to 100 MHz
• CLK IN Frequency Range: 20 kHz to 100 MHz
• Interface: Low-Voltage Differential Signaling (LVDS)
• Supported Signaling Pins: Up to 20 low-voltage digital pins
• Onboard Memory: 2 Mb/channel (778993-01), 16 Mb/channel (778993-02), or 128 Mb/channel (778993-03)
• Differential Voltage Output (Vod) into 100 Ω: 1.125 V typical
• Single-Ended Output Low (into open): 0.2 V min to 2.16 V max
• Data Channel Pull-up Resistor: 300 kΩ to 3.3 V
• Maximum Power Requirement: 16.4 W
• Dimensions: 8.5 × 0.8 × 5.1 inches
• Weight: 12 oz

– Key Features

• Single- and double-data-rate mode support
• Per-channel direction control (single-data-rate mode)
• Five trigger types: Start, Pause, Script, Advance, and Reference
• Synchronization and Memory Core (SMC) technology for flexible waveform and instruction co-location
• SMB connectors for CLK IN, CLK OUT, and PFI 0
• 12X InfiniBand connector for digital data and control

– Typical Applications

• Digital communication system testing
• Semiconductor device characterization
• High-pin-count IC validation
• Aerospace and defense electronics testing

– Compatibility & Integration

Driver software: NI-HSDIO. Development support includes LabVIEW (7.0+), Microsoft Visual C/C++ (6.0+), and LabWindows/CVI (6.0+). Includes Digital Waveform Editor, Script Editor, and LabVIEW Express VIs (7.1+). Compatible with PXI Express hybrid-slot chassis.