Tektronix 305 DMM Manual de usuario

Tfektronix

305 DMM

OSCILLOSCOPE

OPERATORS

INSTRUCTION MANUAL

Tektronix. Inc.

P.0. Box 500

Beaverton. Ore on 97077

070-2424-00

Tektronix

COMMITTED TO EXCELLENCE

PLEASE CHECK FOR CHAN E

INFORMATION AT THE REAR

OF THIS MANUAL

305 DMM

OSCILLOSCOPE

OPERATORS

INSTRUCTION MANUAL

First Printin JUL 1978

Serial Number

-----------------------------

Revised JUL 1981

Copyri ht e 1978 Tektronix, Inc. All ri hts

reserved. Contents of this publication may not be

reproduced in any form without the written

permission of Tektronix, Inc.

Products of Tektronix, Inc. and its subsidiaries

are covered by U.S. and forei n patents and/or

pendin patents.

TEKTRONIX, TEK. SCOPE-MOBILE, andf^?*

are re istered trademarks of Tektronix, Inc.

TELEQUIPMENT is a re istered trademark of

Tektronix U.K Limited.

Printed in U.S A. Specification and price chan e

privile es are reserved.

TABLE OF CONTENTS

Pa e Pa e

LIST OF ILLUSTRATIONS ii

LIST OF TABLES iii

GENERAL INFORMATION 1ADJUSTMENT AND BASIC DISPLAY 17

Introduction 1Oscilloscope Display 17

Safety Information 1Di ital Multimeter Display 20

Operatin Volta e 2APPLICATION AND MEASUREMENTS 22

Internal Battery Operation 4

Battery Char in 5Instantaneous Amplitude Measurements-DC 22

Battery Care 5Peak-to-Peak Amplitude Measurement-AC 24

Volta e Comparison Measurements 25

CONTROLS AND CONNECTORS 6Time Duration And Frequency Measurement 20

Power Source And Connectors 6Time Difference Measurement Between Two

Calibrator And Display Controls 8 Pulse Waveforms From Different Sources 27

Vertical Controls 8 Dual Trace Phase Difference Measurements 28

Horizontal Controls 11 Hi h Resolution Phase Difference Measurement 30

Tri erin And Sweep Controls 12 Rise Time Measurement 31

Di ital Multimeter Controls 14 Common Mode Rejection 32

BASIC INSTRUMENT OPERATION 15 SPECIFICATION 33

Operatin Considerations 15 Electrical Characteristics 33

REV A SEP 1979 305 Operators

LIST OF ILLUSTRATIONS

Pa e Pa e

Fi ure 1. Description of power source operation. 3Fi ure 13. Example of peaktopeak volta e

Fi ure 2. View of rear cover. 6measurement. 24

Fi ure 3. Ri ht side view of instrument cabinet. 7 Fi ure 14. Example of time duration and frequency

Fi ure 4. Left side view of instrument cabinet. 7 measurement 26

Fi ure 5. Location of display and calibrator controls. 9Fi ure 15. Time difference between two pulses from

Fi ure 6. Location of vertical deflection system different sources. 27

controls. 10 Fi ure 16. Example of dual trace phase difference

Fi ure 7. Location of horizontal deflection system measurement. 28

controls. 11 Fi ure 17. Example of hi h resolution phase difference

Fi ure 8. Location of tri er and sweep controls. 12 measurement. 30

Fi ure 9. Location of di ital multimeter controls. 14 Fi ure 18. Example of rise time measurement. 31

Fi ure 10. Probe compensation. 16 Fi ure 19. Common mode rejection of an undesired

Fi ure 11. Location of external operator adjustments. 19 line frequency. 32

Fi ure 12. Example of instantaneous volta e measure

ment with VOLTS/DIV set at 10M

position. 23

ii 305 Operators REV A SEP 1979

LIST OF TABLES

Pa e

TABLE 1. Battery char e related to operatin tem

perature and char in temperature. 5

TABLE 2. Electrical Characteristics 33

@305 Operators iii

305 DMM Oscilloscope

305 Operators

ENERAL INFORMATION

INTRODUCTION

The Sony/Tektronix 305 DMM Oscilloscope is a versatile

solid-state (except crt> portable instrument that combines

small size and li ht wei ht with the ability to make preci

sion waveform and di ital measurements associated with

industrial, military, computer maintenance, and business

machine applications. The 305 is mechanically constructed

to withstand shock, vibration and other environmental

extremes associated with portability. Operatin power for

the instrument is provided by external dc, rechar eable

batteries, or normal power-line volta e. Internal circuitry

rechar es the batteries whenever the instrument is connect

ed to power-line volta e. Selection of the DMM or oscil

loscope function (or both} is made with front panel push

buttons.

The DMM is autoran in and measures resistance, ac

volta e and dc volta e. Full scale measurements are 2 me 

ohms, 700 Vac and 1000 Vdc. The front panel di ital read

out is a 3-Vi di it display containin an automatic ne ative

polarity indicator and decimal point locator. No polarity

indication is shown for positive measurements. Input con

nectors for the multimeter are located on the ri ht side of

the instrument cabinet.

Oscilloscope functions provide dual-channel, dc to 5

me ahertz vertical deflection with calibrated deflection

factors of 5 millivolts/division to 10 volts/division in a 1-2-

5 sequence. The horizontal deflection system provides cali

brated sweep rates from 0.5 second to 1 microsecond per

division. A X10 ma nifier increases the indicated sweep rate

by a factor of ten, extendin the fastest sweep rate of 0.1

microsecond/division. The tri er input may be internal or

external, with tri erin effective over the full bandwidth

of the vertical deflection system. Calibrated X-Y measure

ments are made with Channel 2 (Y) providin the vertical

deflection and Channel 1 (X) horizontal deflection. Oscil

loscope si nal input connectors are located on the left side

of the instrument cabinet The crt display is an 8 X 10 di

vision raticule with each division measurin 0.632 centi

meters (approximately 0.25 inches).

SAFETY INFORMATION

This operatin manual contains information which the

user must follow to ensure safe operation of the instru

ment. Warnin information is intended to protect the

operator while Caution information protects the

instrument.

REV A SEP 1979 305 Operators 1

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