PCM-formatter: a powerful, low cost system for PCM telemetry decoding and quick look support

Author

Quadrini, E.M. ; Corba, M. ; Falconi, B. ; Moriggio, C. ; Santambrogio, R. ; Younis, F.A.

Author_Institution

Istituto di Fisica Cosmica e Tecnologie Relative-CNR, Milano, Italy

Volume

40

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

905

Lastpage

908

Abstract

An IBM compatible PC board has been developed to simplify acquisition and execution of quick look on telemetry signals. The pulse code modulation (PCM)-FORMATTER can synchronize and decommutate nonreturn to zero level (NRZL) or split phase level (SPL) streams in the range of 5 kb/s to 128 kb/s. Up to eight different functions can enhance the real time data preelaboration. Periodically the host PC can read the reconstructed format frames from two dual port memory buffers. An application software package helps the user in preparing the board and allows a sensible reduction in the data handling code. This code, which is prepared by the user, works like a subroutine making the required elaboration on an entire format subframe at a time. The faster the execution, the lighter the proportion of the analyzed data. The hardware, based on a field programmable gate array (FPGA), can be adapted by software in a different device to operate different tasks

Keywords

microcomputer applications; pulse-code modulation; telecommunications computing; telemetering equipment; IBM compatible PC board; PCM telemetry decoding; PCM-formatter; application software package; data handling code; dual port memory buffers; field programmable gate array; hardware; low cost system; nonreturn to zero level; pulse code modulation; quick look support; real time data preelaboration; reconstructed format frames; split phase level; subroutine; Application software; Costs; Field programmable gate arrays; Modulation coding; Packaging; Phase change materials; Phase modulation; Pulse modulation; Software packages; Telemetry;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.256681

Filename

256681