• DTS dedicated high-speed data acquisition card (for Phase-OTDR system)

    Phase optical time-domain reflectometry (Phase-OTDR) system Low-cost phase optical time-domain reflectometry (Phase OTDR) system DTS dedicated high-speed data acquisition card is a high-speed weak signal data acquisition card. DTS dedicated high-speed data acquisition card adopts the hardware real-time accumulation and averaging technology designed by our company's technological innovation to realize weak signal enhanced acquisition and extract relevant signals submerged by noise. Through on-board synchronization technology, the original signal can be accumulated up to 32768 times, which can increase the signal-to-noise ratio by 180 times. It is a widely used weak signal detection board. DTS dedicated high-speed data acquisition card has two 12-bit high-speed A/D converters on board. According to customer needs, two sampling rate versions of 100MSPS and 125MSPS can be provided. DTS dedicated high-speed data acquisition card has carefully designed a unique parallel synchronous signal acquisition and accumulation technology, so that acquisition and accumulation are completed synchronously. The computer takes only 3 seconds to get the final result after 16,000 acquisitions and accumulations of the original signal with a length of 10,000 points. The DTS dedicated high-speed data acquisition card has two trigger modes: external trigger and internal trigger. Customers can choose the device trigger acquisition card mode or the acquisition card trigger device mode. After careful signal integrity processing, the trigger pulse overshoot given by the device is within 5%, and the superior signal quality ensures that the device is not triggered by mistake. The DTS dedicated high-speed data acquisition card can accurately recover, detect and measure weak signals submerged by noise background, and is particularly suitable for distributed fiber optic sensing systems.

    产品特点High-speed data acquisition and transmission、 High-precision data acquisition

    产品货号J80010016

    应用领域Distributed fiber optic sensing system、 Scientific research

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    Daisy

    电话:18602170419

    邮箱:moli@microphotons.com

    主要参数
  • 核心参数
  • 尺寸图
  • Parameter

    Sampling frequency:

    100M/125M optional

    A/D resolution:

    12bit

    Number of channels:

    2 channels

    Data output interface:

    PC104

    Input impedance:

    50 ohm

    Signal input mode:

    SMA

    Two-channel synchronous jitter:

    5psRMS

    Input range:

    ±2V

    Analog signal bandwidth (-3dB):

    100MHZ

    Trigger mode:

    Internal trigger, external trigger (rising edge trigger)

    Internal trigger width:

    N/sampling frequency, N can be set by software

    Internal trigger cycle:

    M(uS), M can be set by software

    Single sampling signal-to-noise ratio:

    >=60dB

    Sampling length:

    100~10000 sampling points

    Single sampling accuracy:

    ±0.1%

    Number of accumulations:

    10~32768 times adjustable

    Accumulation average mode:

    Real-time sampling accumulation and averaging, 10000 sampling points and 16384 sampling accumulations can be completed in 3 seconds

    Power consumption:

    <15W

    Operating temperature:

    0℃-50℃

    Storage temperature:

    0℃-100℃

    Relative humidity:

    0-85%

    Instrument driver:

    Windows XP

    Application:

    Provide DEMO program source code and technical support under VC++6.0 development platform

    Signal interface

     1.jpeg

    As shown in the figure above, the acquisition card provides 4 SMA input and output ports. The functions are as follows:

    Signal name

    Function

    S1_IN

    First analog signal input

    S2_IN

    Second analog signal input

    IT

    Internal synchronization trigger output

    OU

    External synchronization trigger input

     

    DTS system wiring example

    Light source (device) trigger acquisition card connection method

     2.png

    Connection method of acquisition card trigger light source (device)

     3.png


    Actual measurement results of acquisition card (DTS system application)

    The following signals use the DTS dedicated high-speed data acquisition card - Model 150 acquisition card, with our company's pulse light source and APD detection circuit, using 6KM long InfiniCor® 62.5μm multimode optical fiber, the ambient temperature is 21℃, and there are four optical fiber loops in a 70℃ oil tank at about four kilometers, with lengths of 5M, 2M, 3M, and 8M respectively. There is also a fiber loop at about five kilometers, placed in a 70℃ oil tank.

      4.jpeg

    4096 average reference light curves

     5.jpeg

    4096 average signal light curves

     6.jpeg

    4096 average fiber loops partial curve

     7.jpeg

    32768 average reference light curves

     8.jpeg

    32768 average signal light curves

     9.jpeg

    32768 average fiber loops partial curve

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