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250MSps dual-channel high-speed data DAS acquisition card
The PCIe-6920 is a high-speed data acquisition card with a PCIe x8 Lane interface, dual channels, and a 14-bit resolution at a sampling rate of 250MSps. It features an onboard high-performance FPGA chip with abundant multipliers and RAM resources. Using large-capacity data buffering and high-speed data transfer engine technology, it supports real-time uploading of raw data, with a data transfer rate of up to 2GB/s. The driver software is highly compatible and supports multiple versions of WIN7, WIN8, and WIN10 (32/64-bit). DAS (Distributed Acoustic Sensing) and DVS (Distributed Vibration Sensing) are relatively new technological directions in recent years. Compared to DTS (Distributed Temperature Sensing), they require higher technical standards and more advanced devices. In particular, the system's ADC requirements are demanding, needing high sampling rates and high precision, as well as long-term stability. Currently, our company provides high-speed A/D converters (sampling rates up to 1 GS/s, 16-bit) for DAS and DVS systems.
Product features:14-bit dual-channel synchronous real-time sampling 、 with 250M sample rate 、 DC coupling, 50Ω input impedance 、 2Vpp input voltage range 、 0-125MHz analog bandwidth (customizable bandwidth) 、 Up to 88dBc SFDR 、 Trigger output pulse, 16-channel digital I/O 、 PCI Express x8 Lane high-speed transmission interface 、 2GB DDR3 high-speed data buffer
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Input Channel | Value | Unit |
Number of Input Channels | 2 | |
Input Impedance | 50±1% | Ω |
Input Signal Range | 2Vp-p/10dBm | |
Input Coupling | DC (AC coupling available upon request) | |
Resolution | 14 | bits |
Bandwidth (-3dB) | 0-125 MHz (other bandwidths available upon request) | MHz |
Spurious-Free Dynamic Range (SFDR) | -1dBFS input / 250MSps | |
fIN=26MHz | 88.5 | dBc |
88.9 | dBc | |
Signal-to-Noise Ratio (SNR) | -1dBFS input / 250MSps | |
fIN=26MHz | 70 | dBFS |
72 | dBFS | |
Average Noise Density | -140 | dBm/Hz |
Internal Reference Clock | ||
Frequency | 10 | MHz |
Stability | ±0.5(-20-60℃) | ppm |
Trigger Output | ||
High-Level Min. Voltage | 3.3 | V |
Pulse Width Resolution | 4 | nS |
Min. Pulse Width | 4 | nS |
Digital Input/Output | ||
Number of Channels | 16 | |
Level Standard | 3.3V LVTTL | |
Output Driving Capability | 8( MAX) | mA |
Signal Rate | 50( MAX) | Mbps |
Onboard Buffer | 2 | GB( DDR3L) |
Onboard Algorithms
Supports IQ demodulation function, with adjustable center frequency.
Supports acquisition of raw data, IQ demodulated amplitude and phase data, and processed data.
Maximum number of capture points per trigger: 65536 (131072 when using a single channel or raw data only).
Supports trigger delay sampling.
Sampling rate can be reduced to 125M, 83.33M, 62.5M, and 50M for use.
Power Supply and Power Consumption
Supply Voltage: 12V (gold finger power supply)
Power Consumption: 18W (Max)
Temperature Range
Operating Temperature: -20°C to 60°C
Storage Temperature: -40°C to 85°C
Mechanical Dimensions
181mm(L) x 111mm(W)x20mm(D)
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