The NI PXI-6115 S Series is a 12-bit multifunction data acquisition module for PXI systems that combines simultaneous analog input and output with digital I/O and counter/timer capabilities. Built around four differential analog input channels with dedicated ADCs, this card delivers 10 MS/s per-channel sampling with ±0.2 V to ±42 V input ranges and 3-pole Bessel antialiasing filters at 50 kHz or 500 kHz. Two 12-bit analog output channels provide up to 4 MS/s (single channel) or 2.2 MS/s (dual channel) update rates at ±10 V. The module includes 8 digital I/O lines, two 24-bit counter/timers, and 16 MS or 32 MS onboard FIFO memory depending on configuration. Simultaneous sampling across all input channels ensures phase coherence for multichannel measurements.
Technical Specifications
Analog Input
• 4 differential channels, 12-bit resolution
• 10 MS/s per channel with simultaneous sampling
• Selectable ranges: ±0.2 V, ±1 V, ±5 V, ±10 V, ±20 V, ±42 V (eight total)
• Input coupling: AC or DC
• Antialiasing filters: 3-pole Bessel, 50 kHz or 500 kHz per channel
• Absolute accuracy: 185 mV to 184 mV
• Dedicated ADC per channel
Analog Output
• 2 channels, 12-bit resolution
• ±10 V output range
• 4 MS/s update rate (single channel), 2.2 MS/s (dual channel)
• 50 Ω output impedance (±5%)
• DC coupling
Digital & Timing
• 8 digital I/O lines with triggering capability
• Two 24-bit counter/timers
Memory & Power
• Onboard FIFO: 16 MS or 32 MS configurations
• +5 VDC: 2.2 A; +3.3 V: 0.8 A
Physical & Environmental
• 68-pin SCSI-II connector
• 6.3 × 3.9 inches (16 × 10 cm)
• Operating: 0 °C to 50 °C; Storage: −20 °C to 70 °C
• 15-minute warm-up recommended
– Key Features
• Per-channel dedicated ADCs enable true simultaneous sampling without crosstalk
• Configurable antialiasing filters reduce out-of-band noise per channel
• Terminal block accessory (NI TB-2708) provides direct SMB connectivity to analog lines, triggers, counters, and sync signals
• Compatible with parallel-mode SCXI modules via NI-DAQmx 7.4 or later
– Compatibility & Integration
NI-DAQmx driver and LabVIEW support. PXI form factor for modular system integration.
