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.

Product features：High-speed data acquisition and transmission、 High-precision data acquisition

Application area：Distributed fiber optic sensing system、 Scientific research

Unit Price

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Part Number

MP-100M

Lead Time

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Stock

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General Parameters

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Dimensional Drawing

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

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

Connection method of acquisition card trigger light source (device)

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.

4096 average reference light curves

4096 average signal light curves

4096 average fiber loops partial curve

32768 average reference light curves

32768 average signal light curves

32768 average fiber loops partial curve

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