Search-Coil Magnetometer Summary Data, 36.9-Sec Time Resolution

Description

This data set, on experimenter-supplied, multiple-file, EBCDIC, digital magnetic tapes produced on an IBM 360/91 computer, contains summaries of about 2000 fine-time scale data tapes, which the experimenter currently holds. These data set tapes have 420 characters per record and about 1500 records per file, each of which represents one spacecraft orbit or about 2.7 days. These data are time ordered except for occasional overlapping data at the end of a file. A necessary, microfilmed index to the files on each tape is available in data set 68-014A-16C. Each data record contains 36.9-s-averaged values for triaxial spectrum analyzer outputs at 10, 22, 47, 100, 216, 467, and 1000 Hz (21 values); and triaxial broadband data from 0.03 to 0.1 Hz, 0.1 to 0.3 Hz, and 0.3 Hz to the instrument Nyquist frequency, which is determined by bit rate (9 values). Aliasing does not occur except during the tape recorder playback mode. However, the question of aliasing is academic for the OGO 5 instruments operating in the waveform mode, as interference occurs between the seven spectrum analyzer channels and these three broadband modes, seriously degrading the broadband channels. A data quality indicator is also on the tapes.