The NI PXIe-6368 X Series is a high-performance multifunction data acquisition card for PXI Express systems. It integrates 16 differential analog inputs, 4 analog outputs, 48 digital I/O lines, and 4 counter/timers on a single 3U module, delivering 32 MS/s total analog input throughput and 10 MHz hardware-timed digital I/O rates. The card leverages the NI-STC3 timing engine with independent analog and digital timing domains, enabling advanced synchronization and triggering for measurement-intensive applications.
Technical Specifications
Analog Inputs
• 16 differential channels, 16-bit resolution
• Single-channel maximum sampling rate: 2 MS/s
• Total AI throughput: 32 MS/s
• ADC: 16-bit, no missing codes (DNL specification)
• Software-selectable input ranges
Analog Outputs
• 4 channels, 16-bit resolution
• Maximum update rate: 3.33 MS/s
• Output range: ±10 V
Digital I/O
• 48 total lines; 32 lines support hardware-timed I/O
• Maximum digital I/O rate: 10 MHz (hardware-timed lines)
Counter/Timers
• 4 independent 32-bit counters
• Functions: PWM generation, encoder measurement, frequency counting, event detection
Timing & Synchronization
• NI-STC3 architecture with 100 MHz onboard time base
• Independent analog and digital timing engines
• Retriggerable measurement tasks and analog/digital triggering
Physical & Electrical
• Form factor: 3U PXI Express peripheral (x1 slot, specification rev 1.0)
• Native PCI Express interface: 250 MB/s per direction
• I/O connectors: 2 × 68-pin VHDCI
• Power: +3.3 V
• Weight: 241 g
– Key Features
The card’s dual-timing architecture decouples analog and digital operations, enabling independent task configurations and simultaneous multi-rate measurements. The 100 MHz time base ensures precise synchronization across all I/O functions. Hardware-timed digital I/O on 32 lines eliminates software jitter for deterministic control applications.
– Typical Applications
Multifunction DAQ for bench instrumentation, automated test systems, real-time process monitoring, and synchronized analog/digital measurement tasks requiring sub-microsecond timing accuracy.
– Compatibility & Integration
Supported by NI-DAQmx Version 9.0 or later across Windows 7 (64-bit), Windows Vista (x64/x86), Windows XP, and PharLap real-time OS. Programming support includes ANSI C/C++, LabVIEW, LabWindows/CVI, Visual Basic, and Visual Studio .NET. Standard connector blocks and cables (SCB-68A, CB-68LP, BNC-2110, TB-2706) enable rapid integration with external measurement circuits.
