This document provides detailed instructions for using the USB2812 data acquisition card, including hardware installation, signal connection methods, and software setup. It covers AD analog input, DA analog output, DI digital input, DO digital output, and CNT timer/counting functions. The card supports USB connectivity and is designed for applications such as signal acquisition, process control, and industrial monitoring.
The manual includes specifications for each function, such as input/output ranges, sampling rates, and timing parameters. It also explains how to configure physical ID switches for multiple card setups and provides diagrams for component layout and signal connectors. This manual is written in Chinese.
| AD Input Range | +10V, +5V (default), +2.5V, 0–10V |
|---|---|
| AD Conversion Precision | 13 bits (Bib, 13th bit is sign bit) |
| AD Sampling Rate | 31Hz – 250KHz |
| DA Output Range | 0–5V, 0–10V, ±5V (default), ±10V |
| DA Conversion Precision | 12 bits |
| AD Input Channels | 16 channels (single-ended SE), 8 channels (differential DD) |
| DA Output Channels | 4 channels |
| CNT Counter Channels | 3 independent decrement counters |
| Board Dimensions | 158.8mm (L) x 117.2mm (W) x 16mm (H) |
The AD input range is +10V, +5V (default), +2.5V, or 0–10V.
The DA output range is 0–5V, 0–10V, ±5V (default), or ±10V.
The card has 16 single-ended channels or 8 differential channels.
The board size is 158.8mm (length) x 117.2mm (width) x 16mm (height).