I. Basic Information

Model: PCIe-6351 (X Series MIO)

Part Number: 781048-01

Bus: PCIe ×1 (Gen2, bus-powered)

Status: In Stock (Active)

Driver: NI-DAQmx (recommended), compatible with traditional NI-DAQ

System: Windows 7/10/11 (32/64-bit), Linux

II. Core Specifications (Easy to Understand)

✅ Analog Input AI (16 channels)

Channels: 16 single-ended (SE) / 8 differential (DIFF)

Resolution: 16 bits (no bit loss)

Maximum Sampling Rate: 1.25MS/s (single channel); 1MS/s (total throughput of multiple channels)

Voltage Range (software selectable): ±10V, ±5V, ±2V, ±1V, ±0.5V, ±0.2V, ±0.1V

Input Impedance: >10GΩ (parallel 100pF); Overvoltage Protection: ±25V (powered on)

FIFO: 2047 samples

?? Analog Output AO (2 channels)

Channels: 2 voltage outputs

Resolution: 16 bits

Maximum Update Rate: 2.86MS/s (single channel)

Range: ±10V, ±5V

Drive: ±5mA/channel

??️ Digital I/O DIO (24 channels)

Channels: 24 bidirectional TTL (5V), including 16 PFI (programmable function interface)

Modes: Input/Output can be configured by software; Supports static I/O, high-speed waveforms, change detection trigger

Rate: Up to 10MHz (hardware timing)

⏱️ Counter / Timer (4 channels)

32-bit counter, 100MHz base (STC3)

Functions: Quadrature encoder, PWM, event counting, frequency measurement, pulse generation

Each channel FIFO: 127 samples

III. Interfaces and Physical

Connector: 68-pin VHDCI (high density)

Size: Full-height PCIe card (16.8×11.1cm)

Power Supply: PCIe bus power supply (≈10W)

Temperature: 0°C ~ 55°C (operating)

IV. Typical Applications

Medium-high speed dynamic signal acquisition: vibration, shock, acoustics, high-frequency sensors

Closed-loop control: high-speed PID, motion control, servo drive

Automated testing: high-speed component verification, prototype testing, synchronous measurement

Laboratory research: biomedical signals, high-speed data recording, multi-parameter synchronization

V. Comparison / Alternatives of the Same Series (Rate / Channel Selection)

✅ Same number of channels, higher sampling rate

PCIe‑6361: 16AI/2AO/24DIO, 2MS/s, PCIe ×1, in stock (high-speed version)

✅ Same rate, more channels

PCIe‑6353: 32AI/4AO/48DIO, 1.25MS/s, PCIe ×1, in stock (multi-channel version)

✅ Low-cost alternative (low speed)

PCIe‑6321: 16AI/2AO/24DIO, 250kS/s, PCIe ×1, in stock (entry-level version) VI. Common Questions

✅ High-speed AI + AO: 1.25MS/s acquisition + 2.86MS/s output, suitable for high-speed closed-loop applications

✅ Wide voltage range: Supports as low as ±0.1V, suitable for small-signal sensors

⚠️ Multi-channel bandwidth: Total throughput of multiple channels is 1MS/s. For high-speed multi-channel applications, choose 6353/6363