I. Basic Specification

Full Name: ±10 V, 250 kS/s, 16-Bit, 32-Channel C Series Voltage Input Module

Channel Configuration: 32 single-ended (SE) or 16 differential (DIFF), configurable via software

Bus/Platform: C Series, for CompactDAQ/CompactRIO enclosures

Application: Industrial voltage signal acquisition, sensors (strain/pressure/temperature), DC/low-frequency signals, high-channel-count test systems

Core Features: High density, multiple ranges, channel-ground isolation, overvoltage protection, multi-channel multiplexing (asynchronous sampling)

II. Core Specifications (16 bit)

✅ Analog Input (AI)

Resolution: 16 bit, lossless (guaranteed)

Number of Channels: 32 SE / 16 DIFF

Input Range (Programmable for each channel): ±10 V

±5 V

±1 V

±0.2 V

Total sampling rate: 250 kS/s (shared by all channels)

Conversion time: 4 μs / sample point

Input coupling: DC

Input impedance: >1 GΩ (for all ranges)

✅ Accuracy (25 ℃, typical)

Offset error: ±2 mV (±10 V range)

Gain error: ±0.05% FS

Non-linearity: ±0.003% FS

Noise: <10 μV rms (DC–10 kHz)

✅ Protection and isolation

Overvoltage protection: ±30 V (AI ↔ COM)

Isolation (channel-to-ground):

Spring terminal version: 250 Vrms CAT II

DSUB version: 60 VDC CAT I

III. Connectors and Physical

Interface options:

36-bit spring terminals (Push-in / screw)

37-pin D-SUB (high density) NI

Size: C series standard (approx. 100 × 80 mm)

Power supply: Cabinet bus power supply (+5 V)

Operating temperature: –40 ℃ ~ +70 ℃

IV. Software and Drivers

Driver: NI-DAQmx

Support: LabVIEW, LabWindows/CVI, Python, C#

System: Windows, Linux, Real-Time (CompactRIO)