AVO Avometer 7 Аналоговый мультиметр
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Avometer 7
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Since its conception in 1923, the Avometer has maintained a distinct lead upon all its competitors. It can to-day, quite rightly, be termed the most popular instrument of its type in the World, for in no other instrument can one find such a unique combination of ranges, and comprehensive automatic overload protection, in addition to a high degree of accuracy, reliability and simplicity of use. During World War II, tens of thousands of these meters were produced for the Armed Forces, Research Laboratories, Factories, etc., and it is largely due to the unparalleled service which they gave in the most arduous conditions that the same type of instrument is to-day selling so well throughout the globe. The manufacture of so comprehensive an instrument in such a compact form and produced at a moderate price is a major achievement. The Model 7 Avometer incorporates a very large number of useful ranges, but if tests outside the already wide limits of the instrument are required it will generally be found possible to extend the scope of the instrument by means of one of the many Accessories which are available. Although the instrument is widely noted for its ability to withstand hard usage, remember that its mechanism deserves the careful treatment which one would extend to any valuable apparatus. Given a reasonable amount of care and attention, not forgetting the removal of exhausted batteries, this instrument will give years of lasting satisfaction.

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Обслуживание и Руководство пользователя
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english
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Отсканированы документу, все читается.
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2014 05 10
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Foreword .. .. .. .. .. .. .. 3 Introduction .. .. .. .. .. .. .. 5 Table of Ranges .. .. .. .. .. .. 6 Scope of Instrument .. .. .. .. .. 7 Limits of Accuracy .. .. .. .. .. 8 Design and Construction of the Avometer .. .. 8 Range Controls .. .. .. .. .. .. .. 9 Overload Protection .. .. .. .. .. .. 9 The Movement .. 10 Scaling .. ... ... 10 Ranges .. .. .. .. .. .. .. 10 Replacement of Internal Batteries and Cell .. .. 12 Operation of Instrument .. .. .. .. .. 12 Current Measurement .. .. .. .. .. 13 Voltage Measurement .. .. .. .. .. 14 Resistance Measurements .. .. 15 The 10,000 Ohms and 100,000 Ohms Ranges 16 The Megohm Range .. .. .. 17 Battery Condition .. .. .. .. 17 The 10 and 40 Megohm Ranges .. 17 Capacity Measurement .. .. .. 18 Power and Decibel Measurements 19 Power Measurements .. .. .. 19 Decibel Measurements .. .. .. .. 20 Accessories .. .. .. .. .. .. .. 21 Multipliers .. .. .. .. .. .. 21 Shunts .. .. .. .. .. .. .. .. 21 Transformers .. .. .. 22 Resistance Range Extension Unit .. .. .. 22 The Power and Decibel Extension Unit .. .. .. 23 Circuit Diagram of Model 7 Avometer ... 28

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