T 7.2.1.3 Modulación de amplitud

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  T 7.2.1.3 Amplitude Modulation by Klaus Breidenbach New Edition, November 2002 LEYBOLD DIDACTIC GMBH . Leyboldstrasse 1 . D-50354 Hürth . Phone (02233) 604-0 . Fax (02233) 604-222 . e-mail: info@leybold-didactic.de by Leybold Didactic GmbH Printed in the Federal Republic of Germany Technical alterations reserved “The sensitive electronics of the equipment contained in the present experiment literature can be impaired due to the discharge of static electricity. Consequen
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    T 7.2.1.3AmplitudeModulation   by Klaus BreidenbachNew Edition, November 2002 LEYBOLD DIDACTIC GMBH . Leyboldstrasse 1 . D-50354 Hürth . Phone (02233) 604-0 . Fax (02233) 604-222 . e-mail: info@leybold-didactic.de  by Leybold Didactic GmbH Printed in the Federal Republic of GermanyTechnical alterations reserved  “The sensitive electronics of the equipment contained in the present experiment literaturecan be impaired due to the discharge of static electricity. Consequently, electrostatic buildup should be avoided (particularly by utilizing appropriate rooms) or eliminated by dis-charging (e.g. at the panel frames or similar).”  3 TPS 7.2.1.3Contents Note on EMC European stipulations pertaining to electromagnetic compatibility (EMC) oblige themanufacturer of electronic training and educational equipment to draw the operator'sattention to the following possible sources of interference. The types of interferencelisted below could arise but by no means have to. As the case arises it may prove neces-sary to implement one of the measures recommended for the appropriate case. Note regarding the interference immunity of the equipment andexperiment set-ups The sensitive electronics used in the equipment can be interfered with by strong elec-tromagnetic fields arising from large-scale experiment arrangements. This can occur insuch a manner that the equipment operates insufficiently, in particular field effects cancause digital displays to fail. Precautionary and corrective measures: Make sure that no RF generating equipment (e.g. cellular phones) which does not be-long to the experiment set-up is operating in the classroom or in its proximity and thatconnecting leads which can act as potential antennas are kept as short as possible. Note regarding protection against electrostatic discharge (ESD) The sensitive electronic components in the equipment can be impaired or even dama-ged by the discharge of static electricity. Precautionary measures: Select work areas where electrostatic energy cannot be built up by the user and/orequipment (eliminate carpeting and similar items, ensure equipotential bonding). Note regarding protection from line-bound, high-frequency voltagebursts Switching operations involving large loads can occassionally bring about line-boundhigh-frequency voltage bursts which can lead to the temporary impairment of sensitiveelectronic components which could cause equipment operating failure (e.g. data lossesor to changes in the mode of operation). Corrective measures: In order to avoid this malfunction, the mains line can be specially filtered. Furthermore,making occasional data back-ups is recommended. Any interference which might arisecan be eliminated simply by switching the device off and back on again.  4 TPS 7.2.1.3Contents  Note: The oscillographs in the experiment results were recorded with a HP 54600 Aoscilloscope (100 MHz) and further processed with the bench linkHP 34810 A software.The oscilloscope recommended in the equipment set is a low-cost version,with limited operation and display comfort (30 MHz display), but in principledelivers the same results.The experiment results given here are just examples. Therefore, the curvesand results specified in the solutions section should only be taken as guideli-nes.The calculation and representation of the spectra was carried out with EXCEL5.0.
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