The PCI8640 data acquisition card is a high-performance, high-precision data acquisition card that supports single-ended/differential 16-channel analog input, 8-channel digital input/output, 2-channel timer/counter functions, and is suitable for real-time signal processing, digital image processing and other fields.
The PCI8640 is a PCI‑bus data acquisition card designed for use in PCs and industrial monitoring systems. It provides analog‑to‑digital (AD), digital‑to‑analog (DA), digital I/O and timer/counter functions, with a variety of input ranges and high‑speed sampling.
The document includes a functional overview, component layout, connector pinouts, wiring methods, data formats, usage instructions for AD and CNT features, calibration procedures, and warranty information. This manual is written in Chinese.
| AD Converter Type | AD7899-1 (compatible with AD7899-2) |
|---|---|
| AD Input Voltage Range | ±10 V, ±5 V (AD7899-1) / 0‑5 V, 0‑2.5 V (AD7899-2) |
| AD Resolution | 14 bits |
| AD Sampling Frequency | 0.01 Hz – 400 kHz |
| Analog Input Channels | 32 single‑ended, 16 differential |
| FIFO Memory Depth | 8 K words |
| On‑board Clock Oscillator | 40 MHz |
| DA Converter Type | AD5725 |
| DA Output Voltage Range | ±10 V, ±5 V, 0‑10 V, 0‑5 V |
| DA Resolution | 12 bits |
| CNT Counter/Timer Max Frequency | 20 MHz, 16‑bit |
| CNT Clock Source Options | Local 620 Hz – 20 MHz, External up to 20 MHz |
| Operating Temperature Range | -40 °C – +85 °C |
The AD7899‑1 converter accepts ±10 V or ±5 V, while the AD7899‑2 version accepts 0‑5 V or 0‑2.5 V.
It provides 32 single‑ended and 16 differential analog input channels.