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 TOP  > Geophysical survey > McSEIS-SXW
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2 Seismic survey 2 Surface wave inquiry 2 Grasp of S wave velocity structure of about 20m 2
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3 Features 3 Specification 3 Catalog & Manual 3 Download 3 Others 3 Related_product

McSEIS-SXW

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1 S&DLmini   High Resolution Surface-Wave Seismograph

This “Surface-wave data acquisition system” is our unique method to produce the underground image of S-wave velocity in two-dimension so easily with multi-point survey and our data analysis technique. McSEIS-SXW is well-designed instrument for the purpose of analyzing the structure of S-wave velocity efficiently. You can acquire the result of analysis at site with the bundled software, “SeisImager/SW”.
You can also analyze seismic refraction at site with another bundled software of “SeisImager/2D”.
It’s based on the Windows XP SP2 professional with
TFT color display, Hard disk drive, USB2.0 ports with higher quality and reliable field performance.
Of course not only these advantages but you can make use of this device for various data acquisition for engineering purposes. McSEIS-SXW provides you higher performance than the others.

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  製品のトラブル  
     
1 ● McSEIS-SXW receives surface-waves, which are generated by artificial sources such as sledge
  hammer, with 12 or 24 geophones. You can easily survey the underground without using large scale
  of source like dynamite or vibrators.

● The effective depth for survey is up to approximately 20 meter from the surface of the ground with
  easy-to-use geophones (4.5Hz).

● Our original technique “CMP Analysis” has been succeeded in improving the data accuracy of
  horizontal resolution and monitoring S-wave velocity model in 2D.

● With the installed software, you can analyze the underground automatically.

● The estimated N-value structures can be figured by inputting N-value which was measured with the
  method of Swedish Weight Sounding, SPT or Ram Sounding.

● Softwares for PC are also available (optional).

● McSEIS-SXW is widely available for various purpose of investigation for such as housing-site
  investigation, earthquake resistant study, for judgement of soil improvement and so on.

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  Data Acquisition
       
    Number of Channels
Input Impedance
Gain
FrequencyRange
A/D Resolution
Sampling Rate
Pre-Trigger
Memory Length
Trigger Input
Trigger Level
:24+AUX1 for shot mark
:20KΩ∥0.05μF
:12, 30 and 48dB
:2 - 4600Hz
:24 bits
:33.3,, 50, 100, 200, 500, 1000, 2000, 4000μsec
:128 words
:1K, 2K, 4K, 8K, 16K words
:Hammer switch, geophone
:100 - 1000mV in 100mV step
     
  System
       
    CPU
OS
System memory
Display
HDD
Data Format
Interface
Power Requirement
Operating Temperature
Dimensions
Weight
:ULV Intel Celeron Professor (400MHz)
:Windows XP Professional
:256MB
:10.4inch TFT color LCD 1024×768dots
:80GB
:SEG-2
:USB2.0 port×3ports, Keyboard
:12VDC(10.5 to 13.5VDC) 2.0A (standby), 4.0A(max)
:0 - 45 deg C
:330mm (W) x 280mm (D) x 220mm (H)
:8kg
     
  Relation between sample rate and digital filter
     
   
Sampling Rate (μsec) Digital Lowpass Filter
33.3 4600 *1
50 4600 *1
100 1000
200 500
500 200
1000 100
2000 100

*1) analog anti-aliasing filter
     
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S wave velocity structural chart S wave velocity structural chart analyzed again by using N value Presumption N value cross section (2D analysis chart) Presumption geological features cross section
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Printer Land streamer cable Geophone Takeout Cable
外部プリンター 1 2 4
 
Highly accurate surface wave inquiry hammer    
外部プリンター 1 2 2
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E-mail :seihin@oyo.jp