This is a PCIe x8 Lane, dual-channel, 14bits rate fiber optic sensing and demodulation card with a sampling rate of 250MSps. By adopting high-capacity data cache and high-speed data transmission engine technology, it supports real-time upload of raw data with data transmission rate up to 2GB/s.The driver has good compatibility and supports multiple versions of WIN7, WIN8, WIN10 with 32/64bits, as well as CentOS and Ubuntu systems.

| Parameters | GY-DAS-250-DAQ | |
|---|---|---|
| Input Channel | ||
| Number of input channels | 2 | |
| Input Impedance | 50±1% | Ω |
| Input Signal Range | 2Vp-p/10dBm | |
| Input coupling method | DC(可定制AC耦合) | |
| Resolution | 14 | bits |
| Bandwidth(-3dB) | 0-125 | MHz |
| Spurious-free dynamic range(SFDR) | -1dBFS輸入/100MSps | |
| fIN=26MHz | 88.5 | dBc |
| fIN=42MHz | 88.9 | dBc |
| Signal-to-noise ratio(SNR) | -1dBFS輸入/100MSps | |
| fIN=26MHz | 70 | dBFS |
| fIN=42MHz | 72 | dBFS |
| Average noise density | -140 | dBm/Hz |
| Internal reference clock | ||
| Frequency | 10 | MHz |
| Stability | ±0.5(-20-60℃) | ppm |
| Trigger output | ||
| High level minimum voltage | 3.3 | V |
| Pulse width resolution | 10 | nS |
| Minimum pulse width | 10 | nS |
| Digital input/output | ||
| Number of channels | 16 | |
| Leveling standards | 3.3V LVTTL | |
| Output drive capability | 8(MAX) | mA |
| Signal Rate | 50(MAX) | Mbps |
| On-Board Cache | 2 | GB(DDR3L) |