NI PCI-6561 LVDS Digital Waveform Generator / Analyzer (16 Mb/Channel)

The NI PCI-6561 is a 100 MHz digital waveform generator and analyzer built on Low-Voltage Differential Signaling (LVDS) technology for precision timing and high-speed digital applications. The device integrates 16 digital channels with per-channel direction control in SDR mode, operates in both Single Data Rate (SDR) and Double Data Rate (DDR) modes, and delivers 200 Mb/s maximum throughput in DDR operation. Each channel provides 16 Mb of onboard memory for waveform generation and capture.

– Technical Specifications

• Channels: 16 digital
• Memory per Channel: 16 Mb
• Maximum Clock Rate: 100 MHz
• Maximum Data Rate (DDR): 200 Mb/s
• Clock Resolution: 10 ps
• Data Delay Range: 0.0 to 1.0 sample clock periods (60 ps resolution, for clock frequencies ≥ 25 MHz)
• Channel-to-Channel Skew (Generation): ±215 ps typical (clock frequencies ≥ 25 MHz)
• Channel-to-Channel Skew (Acquisition): ±330 ps typical (clock frequencies ≥ 25 MHz)
• Lock Time: 400 ms typical
• Power Consumption: 16.5 W maximum
• Supply Rails: +3.3 VDC @ 1.7 A, +5 VDC @ 1.1 A, +12 VDC @ 0.4 A, −12 VDC @ 0.05 A

– Key Features

• On-board clock with internal voltage-controlled crystal oscillator (48 Hz to 100 MHz)
• External clock input via SMB connector (20 kHz to 100 MHz)
• STROBE clock source option (48 Hz to 100 MHz)
• Reference clock input: 10 MHz ± 50 ppm with 25% to 75% duty cycle range
• Advanced trigger and synchronization capabilities
• Per-channel SDR direction control
• 12X InfiniBand connector for digital data, sample clock export, triggers, and events
• Programmable Function Interface (PFI) for events and triggers

– Typical Applications

High-speed digital signal generation and analysis, LVDS logic testing, precision timing validation, and multi-channel synchronous data acquisition in laboratory and production environments.

– Compatibility & Integration

Supported by NI-HSDIO driver software with integration into LabVIEW, LabWindows/CVI, Measurement Studio, Microsoft Visual C/C++, and .NET. Configuration via Measurement & Automation Explorer (MAX).