Apparatuur informatie

Boonton Electronic 72B Level Meter
Fabrikant:
Model:
72B
Datum:
1985
Categorie:
Groep:
Omschrijving:
Capacitance Meter

Informatie

The Model 72B 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 1 MHz test signal is held to a level of 15 mV, r.m.s. (option -03 is 100 mV) , 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 normal 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 72B 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^O devices {down to Q=l) without appreciably degrading the accuracy of the measurement. The 72B responds to the effective parallel capacitance of the test specimen. For a specimen with predominantly series loss and a 0-factor of less than 10, the 72B will indicate the effective parallel capacitance; i.e.: Cp = CSQ2/{1 + Q2 ) Two Plug-In connection adapters are supplied with the 72B, 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 measurements. 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. 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. Connection to the rear-panel edge connector should be made with an Amphenol Type 225-22221-101 jack.

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Service-en gebruikershandleiding
Handleidingen type:
Service-en gebruikershandleiding
Pagina’s:
40
Grootte:
1.51 Mbytes (1586679 Bytes)
Taal:
english
Herziening:
Handleidingen-ID:
Datum:
01 februari 1985
Kwaliteit:
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28 januari 2017
MD5:
32ec391bfca66c8142fa2be2a7521861
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636

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