Accession Number:

ADA110055

Title:

Ground Station Digital Interface.

Descriptive Note:

Mechanical engineering rept.,

Corporate Author:

AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)

Personal Author(s):

Report Date:

1980-09-01

Pagination or Media Count:

69.0

Abstract:

Digital computer interface equipment has been developed to enable the recovery of digital data encoded in special format and recorded, both in flight and in laboratory experiments, using an analogue magnetic tape transport. The recorded data are first reproduced, in a continuous manner, at the ground station processing centre, using an analogue magnetic tape reproducing machine and are then taken to the input of the interface equipment. Serial to parallel conversion of the data into 16-bit words suitable for direct entry into a computer, under interrupt control, is performed by the interface equipment. Time-of-day information which is normally multiplexed with other digital data and recorded on the magnetic tape, effectively constitutes an identifier which may be used for specifying the location of any areas of interest on the tape. To enable the analogue reproducing machine to be stopped at any predetermined location, a preset stop signal generator has been incorporated in the interface equipment. Complete details, together with a functional description, of each circuit within the digital interface equipment are included. Author

Subject Categories:

  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE