Информация по оборудованию

Boonton Electronic 72C Измеритель уровня
Boonton Electronic
Модель: 72C
Категория: Измерительная техника
Группа: Измеритель уровня
Описание: Capacitance Meter

The model 72C Capacitance Meter provides instant, direct reading, three- terminal and differential capacitance measurements from 0.01 to 3000 pF. This coverage is divided into eight ranges, selected either by the front- panel switch or remotely, arranged in a 1 - 3 - 10 sequence. The solid- state design and crystal-controlled signal source contribute to the high stability and excellent reliability of the instrument. The 100 kHz test signal is held to a level of 15 mV, r.m.s., allowing the measurement of capacitance of semiconductor devices. The provision for application of d.c. bias to either or both sides of the specimen makes it possible to measure these devices under operating conditions. The bias voltages can be applied either to the rear-panel terminals provided, or to the appropriate pins on the edge connector. The 72C employs an unusual range-switching system using switching diodes and miniature reed relays; the elimination of the switch contacts from the measurement circuits assures a maximum of reliability and stability. The instrument’s phase-sensitive detector system permits the measurement of even low-Q devices {down to 0-1) without appreciably degrading the accuracy of the measurement* The 72C responds to the effective parallel capacitance of the test specimen. For a specimen with predominantly series loss and a Q-factor of less than 10, the 72C will indicate the effective parallel capacitance; i.e.: Cp = CgQ / (1 + Q ) Two Plug-In connection adapters are supplied with the 72C. One adapter, fitted with two sets of coaxial connectors, 72-4B, is intended for use with coaxial cables and remotely located test fixtures for both three-terminal and differential mesurements. The second adapter, 72-5C, with three terminal posts, is used for wire-lead components; differential measurements are not possible with this adapter. A linear d.c. output is available at rear-panel terminals as well as at the appropriate pins on the edge connector. This feature extends the range of applications beyond ordinary laboratory measurements to include production testing as well as a variety of control functions. Flexibility is further enhanced by the provision of remote ranging terminals; the instrument is fully capable of being integrated into a controlled test system for rapid, production-line testing. Remote ranging is controlled by grounding the MANUAL DISABLE terminal on the rear edge connector, disabling the front-panel range switch. Grounding any one of the eight range-line terminals will then select that range.

Эти руководства доступны для вышеуказанного оборудования:

Ручной тип: Обслуживание и Руководство пользователя Boonton-8495-Manual-Page-1-Picture
Страниц: 44
Размер: 1.61 Mbytes (1687692 Bytes)
Язык: английский
Руководство ID/номер: 983019
Качество: Отсканированы документу, все читается.
Дата загрузки:
MD5: 84b17a665809f81ba68ee6ed393759d4
Загрузки: 121 начиная с 23 Январь 2017

SECTION I - INTRODUCTION Paragraph Page 1-1 Safety Notice ... 1-1 1-2 Description ... 1-1 I-3 Accessories Furnished ... 1-2 1-4 Options and Accessories Available ... 1-2 1-5 Environmental Data, Operating and Storage ... 1-2 1-6 Specifications ... 1-2 SECTION II - INSTALLATION AND OPERATION- 2-1 Installation ... 2-1 2-2 Operating Controls, Indicators and Connectors ... 2-1 2-3 Operating Instructions ... 2-2 2-4 Remote Measurements ... 2-2 2-5 Differential Terminals ... 2-3 2-6 D.C. Bias ... 2-3 2-7 Applications ... 2-3 A. Capacitance, Three Terminal ... 2-4 B. Capacitance, Two Terminal ... 2-5 C. Beta » ... » ... 2-6 D. Forward Transconductance ... 2-7 SECTION III - THEORY OF OPERATION 3-1 General Note ... » ... 3-1 3-2 Bridge Circuits ... 3-1 3-3 Ranging Circuits . ... 3-2 SECTION IV - MAINTENANCE 4-1 General Notes ... 4-1 4-2 Introduction ... 4-1 4-3 Test Equipment Required ... 4-1 4-4 Zero Adjustment ... 4-1 4-5 Calibrat ion Check ... 4-2 4-6 Calibration Adjustment ... 4-2 A. Test-Level Adjustment ... 4-2 B. Range Adjustments ... 4-3 4-7 Note: Periodic Calibration ... 4-3 4-8 Maintenance and Repair Adjustments ... 4-3 4-9 power-supply Adjustments R115 and R118 ... 4-3 4-10 L102, LI03, LI03 and LI04 Loading Adjustment ... 4-3 4-11 High-Q/Low-0 Adjustment C223, C228 and T201 ... 4-5 A. High-Q/Low/Q Test ... 4-5 B. High-Low 0 Adjustment ... 4-5 4-12 T401, C202 Tuning ... 4-6 4-13 100 kHz Amplifier Tuning {L201 Adjustment) ... 4-6 SECTION V - PARTS LIST Paragraph Page 5-1 Introduction ... 5-1 SECTION VI - SCHEMATIC DIAGRAMS 6-1 Schematic Diagrams r Table of Contents ... 6-1


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