Microprocessor based 6-channel PCM telemetry system

Murthy, NN and Lakshmikantha, Saraswathi and Adiga, BS (1983) Microprocessor based 6-channel PCM telemetry system. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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This memo presents the details and salient features of a microprocessor based 6-channel PCM Telemetry system for airborne as well as industrial applications.13; The design and development of the system was undertaken mainly to improve reliability which is of prime concern for any airborne application.13; Pulse code modulation (PCM) like PAM and PDM, is a time multiples or sampled data system in which the values of the input channels sampled are expressed in digital(binary) form. In any sampled data system, the sampling rate of a given channel dictates the frequency response which may be obtained in a given measurement. Analog reproductions of the original signals are produced by filtering of the samples of a single channel. This reproduces the original signal with all frequency components approaching the frequency, whose period equals two times the spacing between the samples. In principle, any form of digital code may be used to represent the channel values. However, the straight binary code used with the analog to digital converters is used in the system.13; The modulating signal in a binary PCM system is thus a sequence oxA3; l's and O's which are grouped in binary words describing the value of the particular channel sampled at the instant of sampling.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Pulse code modulation (PCM);Microprocessor;Telemetry system; Signals
Subjects: MATHEMATICAL AND COMPUTER SCIENCES > Computer Operations and Hardware
Depositing User: Mr. Ravikumar R
Date Deposited: 08 Jan 2007
Last Modified: 24 May 2010 04:24
URI: http://nal-ir.nal.res.in/id/eprint/3886

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