The NI PCI-6542 is a high-speed digital waveform generator and analyzer that delivers precise timing and synchronization for stimulus-response testing, digital communication protocols, and custom signal analysis. The card provides 32 single-ended digital I/O channels with per-channel programmable direction control, operating at a maximum sample clock rate of 100 MHz across configurable logic levels of 5.0 V, 3.3 V, 2.5 V, and 1.8 V. Deep onboard memory leverages Synchronization and Memory Core (SMC) technology, enabling waveforms and instructions to occupy shared memory in 1 MB, 8 MB, or 64 MB per-channel configurations. This architecture supports both single waveform modes and scripted sequences, with advanced triggering and pattern sequencing capabilities for low-skew multichannel synchronization across multiple devices. The included Digital Waveform Editor provides an interactive design environment with support for ASCII and VCD format imports, alongside built-in PRBS and count patterns. Hardware integration occurs through the NI-HSDIO driver on a standard PCI interface.
Technical Specifications
• Channels: 32 single-ended digital I/O with per-channel direction control
• Sample Clock Rate: 100 MHz maximum
• Onboard Memory: 1 MB, 8 MB, or 64 MB per channel (configurable)
• Memory Architecture: Synchronization and Memory Core (SMC) with shared waveform and instruction storage
• Logic Levels: 5.0 V, 3.3 V, 2.5 V, 1.8 V (configurable via NI-HSDIO driver)
• Clock Accuracy: ±100 ppm frequency accuracy; ±30 ppm temperature stability; ±5 ppm aging (first year)
• Power: +3.3 V DC at 1.6 A typical / 1.8 A maximum; +5 V DC at 1.2 A
• Waveform Resolution: Integer multiple of 2 samples minimum
– Key Features
• Per-channel programmable I/O direction for flexible signal routing
• Dual waveform generation modes: single execution (once, n times, or continuous) and scripted sequences
• Advanced pattern triggering with sequencing logic
• Built-in pattern generation: PRBS and count up/down sequences
• Digital Waveform Editor with VCD and ASCII import capability
– Typical Applications
• Stimulus-response testing in digital systems
• Protocol analysis and custom digital signal generation
• Mixed-signal test system development
• Low-skew multichannel digital synchronization
– Compatibility & Integration
• PCI interface with NI-HSDIO driver support
• Digital Waveform Editor included with 8 MB and 64 MB configurations
