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STUDENT TRAINER MPT/EV

MODULES T20F /E

4-CHANNEL PCM MULTIPLEXwith

LINE CODING AMI/HDB3/CMI

::" ElettronicaVeneta s R'21lm ".,.3;';:;":5 ~!C.'TT;.D1 Ll\/ENZA \Trev'i~:;0:1 IT;',~'{\"'W3. Posturna. 16

(<53 ROMA ITALYV:a Leopoldo Serra.32

VOLUM£ I: THEORY and EXERCISES

l©cor1'r,{!G~T8'/ ElETIRO!,!ICA VENETA & iNEL SPAJt__ .__ .

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DIFENDIAMO LA NATURA .NESSUN ALBERO E STATO ABBATTUTOPER QUESTA PUBBLlCAZIONE IN CARTA RICICLATA.LA CARTA RICICLATA SALVA GLI ALBERIE DIFENDE L'AMBIENTE.

IN DEFENCE OF NA TURENO TREE WAS CUR FOR THIS PUBLICA TlONMADE WITH RECYCLED PAPER.THE RECYCLED PAPER SAVES THE TREESAND DEFENDS THE ENVIRONMENT.

DEFENDONS L4 NA TUREON N:4.PAS COUPE D~4RBRES POUR CETTE PUBLICATIONEN PAPIER RECYCLE.LE PAPIER RECYCLE SAUVE LES ARBRESET PROTEGE L'ENVlRONNEMENT.

DEFENDAMOS LA NATURALEZANO SE HA CORTADO NINGUN ARBOL PARA ESTAPUBLICACrON EN PAPEL RECrCLADO.EL PAPEL RECrCLAOO SALVA LOS ARBOLESY DEFIENDE EL AMBIENTE.

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1.1. 11.2

1. 2.11. 2.21. 2.31. 2.41. 2.51. 2.61. 2.7

2.2 .. 12.2

2.2.12.2.22.32.3.12.3.22.3.3

3.3.13.2

3.2.13.2.23.2.3

3.33.3.13.3.23.3.3

4.4.14.2

4.2.14.2.24.2.3

4.34.3.14.3.2

5..5.15.2

5.2.15.2.2

5.35.3.15.3.25.3.3

6.6.16.26.3

6.3.16.3.26.3.36.3.4

CONTENTS VOLUME I

GENERAL ASPECTS of the PCMOBJECTIVESTHEORETICAL NOTIONSIntroductionPCM coding and Time Division Multiplexing (TOM)Notions on the StandardsLine cOdingTransmission meanEqualisationClock extraction

1

PCM FRAME CREATIONOBJECTIVESDESCRIPTIONFunctional 'diagramPCM frameEXERCISESExercise 1:Exercise 2:Exercise 3:

17

Set up of the systemSynchronisation wordObservation of the Time Slots

AMI/HDB3/CMI CODERS and LINE TRANSMITTEROBJECTIVESDESCRIPTIONAMI/HDB3 coderCMI coderTransmitterEXERCISESExercise 1: AMI/HDB3 codingExercise 2: CMI COdingSuggested exercises

23

LINE RECEIVEROBJECTIVESDESCRIPTIONEqualization and amplificationClock extractionSignal sampling and bipolar/unipolarEXERCISESExercise 1: AMI/HDB3 signal receptionExercise 2: CMI signal reception

29

transfo":mation

AMI/HDB3/CM~ DECODERSOBJECTIVESDESCRIP~IONAMI/HDB3 DecoderCMI DecoderEXER.CISESExercise 1:Exercise 2:Exercise 3:

36

Decoding of AMI/HDB3 signalsMeasurement of the error rateMeasurements on the CMI connection

PCM FRAME RECEPTIONOBJECTIVESDESCRIPTION.EXERCISESExercise 1: Starting set up of the systemExercise 2: Receiving PCM frameExercise 3: Reception Time Slots assignmen~Suggest~d exercises

41

CONTENTS

7.7.17.27.3

7. 3. 17.3.27.3.37.3.47.3.57.3.6

8.8.18.28.2.18.2.28.2.3

8.38.3.18.3.28.3.38.3.4

PCM/TDM COMMUNICATION SYSTEM WITH 4 CHANNELSOBJECTIVESDESCRIPTIONEXERCISESExercise 1: Starting set up of the systemExercise 2: Transmitted and received analogExercise 3: Effect of the line and noiseExercise 4: VOice transmissionExercise 5: Example of time switchingSuggested exercises

46

signals

DATA TRANSMISSION at 64 kb/s on PCM CHANNELOBJECTIVESDESCRIPTIONData insertionData extractionInterface V24/RS232CEXERCISESExercise 1: Starting up of the systemExercise 2: Synchronous data transmission at 64kb/sExercise 3: Connection V24/RS232-CSuggested exercises

51

VOLUME I I: DESCRIPTION of the CIRCUITS