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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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    Main parameters
  • Core parameters
  • Dimension Drawing
  • General Parameters

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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
    fIN=42MHz

    88.5

    dBc

    88.9

    dBc

    Signal-to-Noise Ratio (SNR)

    -1dBFS input / 250MSps


    fIN=26MHz
    fIN=42MHz

    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)

    Optional Configurations

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