Marine Seismic Display Enhancement Program. Volume III. Users Handbooks, Seismic Data Acquisition System (SDAS), Seismic Data Display System (SDDS)

摘要

This report describes, in a users handbook format, the operation of hardware systems used to acquire and playback seismic profiling data. The Seismic Data Acquisition System digitizes 1 to 16 channels of analog seismic information and records this data on magnetic tape. This digital data has a maximum dynamic range of 72 dB and maximum sample rate of 10 KHz divided by the number of channels. Record lengths up to 15 seconds with a maximum record delay, before digitizing, of 15 seconds may be selected. Maximum signal level for the system is plus or minus 10 volts. The seismic Data Display System converts a 36 dB dynamic range digital signal to an analog signal having a maximum level of plus or minus 10 volts. The digital information displayed will contain 2000 data points per record. The system has the capability to display seismic data on a line scan intensity modulated recorder, an X-Y recorder, or a high speed fiber optic recorder. Included as appendices are schematic diagrams of the acquisition and display hardware. (Author)