An Intelligent Digital Magnetic Recording System (DIMARS)

Abstract

The system consists of three magnetic variometers with electrical output signals for the H, D, and Z components, a proton magnetometer for the total field, a data acquisition system, two cassette recorders, an analogue chart recorder, a calendar clock, and a telex. The analogue and digital input data are sampled at 10 sec intervals, averaged over a minute, and recorded on a magnetic tape cassette. The computed hourly and daily mean values and the daily minimum and maximum values are recorded together with the occurrence times on a second cassette, at the operator’s request. Rapid run recording of the 10 sec values of each measured component is initiated automatically during magnetic storms.

DIMARS incorporates several test functions as ROM test, A/D convereter test, recorder test telexline test and checking the memory content. The test functions can be activated by the equipment keyboard, or via the telex. The telex can also be operated as an output printer.