High-speed Distributed Acquisition Card ZC-DAS-002
OVERVIEW
Overview
ZC-DAS-002 is a high-speed acquisition and computing card dedicated to distributed fiber-optic vibration sensing: 500 MHz ADC at 14-bit, 1/2/4 channels, built-in pulse compression and frequency-diversity fading suppression, homodyne plus 80M/200M heterodyne demodulation, with fully domestically sourced core chips.
CORE STRENGTHS
Core strengths
- 01
500 MHz acquisition
- 02
FPGA real-time processing
- 03
1/2/4 channels
- 04
Domestic core chips
Key specifications
| Parameter | Value |
|---|---|
| Model | ZC-DAS-002 |
| Channels | 1 / 2 / 4 |
| Maximum range | 110 km （55 km without Raman amplification） |
| Spatial resolution | 1.7–26 m |
| ADC sampling rate | 500 MHz |
| DAC sampling rate | 1000 MHz |
| RF drive frequency | 80 ± 30 / 200 ± 30 MHz |
| ADC resolution | 14 bit |
| Bandwidth (-3 dB) | 0–125 MHz |
| Input coupling | DC coupled |
| Input signal range | -1.8 ~ 1.8 V |
| Input impedance | 50 Ω |
| Noise floor | ≤3 pε/√Hz |
| Vibration dynamic range | ±500 rad |
| Parameter | Value |
|---|---|
| Pulse width resolution | 4 ns |
| Minimum pulse width | 4 ns |
| Frequency diversity | Supported |
| Polarization diversity | Supported |
| IQ demodulation | Supported |
| Logic level | TTL 3.3 V |
| On-board cache | DDR3 4 GB |
| Processor | Dual-core ARM9 |
| FPGA | Xilinx Zynq7-100 (highest Zynq configuration) |
| Host interface | Gigabit Ethernet |
| Input voltage | 12 V |
| Operating temperature | -20 ~ 60 °C |
| Storage temperature | -20 ~ 70 °C |
| More |