The National Instruments PCI-6111 is a PCI bus multifunction data acquisition device engineered for high-speed, synchronized analog and digital signal capture. It delivers two pseudodifferential analog inputs at 12-bit resolution with simultaneous sampling to 5 MS/s per channel, configurable input ranges from ±0.2 V to ±42 V, and selectable DC or AC coupling. Two 16-bit analog outputs update at 4 MS/s (single channel) or 2.5 MS/s (dual channel). The device provides eight TTL/CMOS-compatible digital I/O lines, two 24-bit counter/timers, and 2,048-sample FIFO buffering. Input overvoltage protection extends to ±42 V across all ranges.
Technical Specifications
Analog Input
• 2 pseudodifferential channels, 12-bit resolution
• 5 MS/s simultaneous sampling per channel
• Input ranges: ±0.2 V to ±42 V (software-configurable)
• DC or AC coupling selectable
• Overvoltage protection: ±42 V
• Input impedance optimized for bandwidth preservation on 20 V and 42 V ranges
Analog Output
• 2 voltage output channels, 16-bit resolution
• Update rates: 4 MS/s (single), 2.5 MS/s (dual)
Digital I/O
• 8 lines, TTL/CMOS compatible
Timing
• 2 × 24-bit counter/timers
Data Transfer & Buffering
• 2,048-sample FIFO
• Interrupt, DMA, or programmed I/O modes
Physical
• PCI bus interface; full-length module
• 68-pin male SCSI II I/O connector
– Key Features
• Software-configured and calibrated—no DIP switches or jumpers
• RTSI bus synchronization across up to five DAQ devices
• 15-minute recommended warm-up time
• Operating temperature accuracy within ±10 °C of calibration
• NI-DAQmx driver and configuration utility
– Typical Applications
Stimulus/response testing, automotive characterization (to 42 V), radar, sonar, and ultrasound measurement systems.
– Compatibility & Integration
NI-DAQmx driver required. Compatible with parallel-mode SCXI modules using NI-DAQmx 7.4 or later.
