Surface Equipment GSP-1 VSP Data Acquistion System

Xưởng sửa chữa máy địa vật lý

Xưởng có nhiệm vụ chính là bảo dưỡng, sửa chữa và hiệu chỉnh các máy móc thiết bị điện tử phục vụ cho các đơn vị trong Xí nghiệp địa vật lý giếng khoan. Ngoài ra xưởng còn nghiên cứu đưa vào ứng dụng và phát triển công nghệ tin học trong công tác địa vật lý

Surface Equipment GSP-1 VSP Data Acquistion System

Main Features:

• Up to 16 analogue channels

• 512 Kb digital interface

• 24bit Delta-Sigma convertors

• Built in firing circuit

• Full instrument tests

• USP interface

• Use standard PC running VSProwess software

Specifications

Analogue section

No. of channels:

2-16

Sample interval	0.25, 0.5, 1.0, 1.25, 2.0, 2.5, 4.0, 5.0ms
A/D converter	24bit Delta-Sigma
Dynamic range	<112dB@ 0dB pri-gain (minimum)
Distortion	<0.01% (0.003% typical)@ 31.25Hz, 15V pp signal
Noise	<10µV rms @ 1ms, 0dB pre-gain
Input Diffirential	20V pp max
Inter-channel skew	256kbit/second
Timing Accuracy	10ppm

Digital section

Capacity	512Kbps datastream
Interface	RS422 (As2065 DIF module option)
Cable equalisation	Fully automatic using internal DSP chip
Format	Software configured to match system

General

Airgun firing pulse	Isolated 60V, 30ms pulse
Sound control outputs	4, opto-isolated
Timebreak inputs	3, opto-isolated
Remote start input	1, opto-isolated
Test system	Fully automatic with comprehensive report generation
PC interface	USP
Power requirements	95-260V ac, 50/60Hz universal input, 50Watts
Enclosure	Standard 19” rack mounting

Functionality

Communication with the PC recording system is by USB serial interface. The USB interface will allow the panel to be used with all modern PC’s.

The GSP incorporates a single airgun firing circuit for use on simple checkshot surveys. For independent external control circuits give control over external source controllers such as our own RSS four gun remote gun firing system

The GSP-1 in use with a Dual analogue system

The panel provides fully automatic DC offset and gain calibration along with full instrument tests. The I-test reports are generated on the PC for archiving or for passing on to the client.