Tektronix 314 Manual de usuario

WARRANTY

Tektronix warrants that this product is free from defects in materials and workmanship. The

warranty period is one (1) year from the date of shipment. Tektronix will, at its option, repair or

replace the product if Tektronix determines it is defective within the warranty period and if it is

returned, freight prepaid, to a service center designated y Tektronix.

Tektronix is not o ligated to furnish service under this warranty:

a. to repair damage resulting from attempts y personnel other than Tektronix

representatives to install, repair, or service the product;

. to repair damage resulting from improper use or from connecting the product to

incompati le equipment;

c. if personnel other than Tektronix representatives modify the hardware or software.

There is no implied warranty of fitness for a particular purpose. Tektronix is not liable for

conse uential damages.

may not e reproduced in any form without the written permission of Tektronix, Inc.

Products of Tektronix, Inc. and its su sidiaries are covered y U.S. and foreign

patents and/or pending patents.

TEKTRONIX, TEK, SCOPE-MOBILE, and

Tektronix, Inc. are registered trademarks of

Printed in U.S.A. Specification and price change privileges are reserved.

070-1823-00 First Printing Jan 1975

TABLE OF CONTENTS

PAGE

OPERATING INFORMATION i

Introduction 1

Safety Information 1

Power-Source Requirements 2

AC Power Source Selection 2

DC Power Source Selection 3

FUNCTIONS OF CONTROLS, CONNECTORS,

AND INDICATORS 4

Vertical 4

Display 5

Triggering 7

Horizontal, Cali rator, and Power 8

MEASUREMENT TECHNIQUES io

Triggering the Sweep 10

Triggering Internally on the Input Signal 10

Triggering from an External Source 11

@314 Operators

TABLE OF CONTENTS (cont)

PAGE

Internal and External Sweep 11

X-Y Displays 12

Using External Sweep Voltage 12

Selecting Sweep Rate and Use of the Magnifier 12

Signal Application to Vertical Input 13

How to Measure Voltage 14

AC Signals 14

Instantaneous Voltage Measurement 15

Voltage Comparison 15

How to Measure Time 16

Risetime 16

Delay Time 17

How to Measure Frequency 17

How to Measure Phase 18

How to Make Dual-Trace Phase Measurements 18

How to Make High-Resolution Phase Measurements 19

How to Measure Common-Mode Rejection 19

ii 314 Operators @

TABLE OF CONTENTS (cont)

PAGE

How to Use External Blanking (Z-Axis or Intensity Modulation) 20

How to Store a Display 21

Using Enhanced Mode 22

Integrated Fast-Rise Waveforms 22

Care of Storage CRT 23

Some Common Operational Errors 23

iii

@314 Operators

Fig. 1. Sony-Tektronix 314 Storage Oscilloscope.

314 Operators

OPERATING INFORMATION

NOTE

INTRODUCTION

The Sony-Tektronix 314 is a dual-channel, 10 MHz porta le

storage oscilloscope.

The dc to 10 MHz vertical andwidth provides cali rated

deflection factors from 1 mV to 10 V/graticule div (25 V/div,

or greater, uncali rated, with VOLTS/DIV VARIABLE in

fully counterclockwise position). A delay line in the verti

cal system permits o servation of that part of the signal

which triggers the sweep.

The horizontal deflection system provides cali rated sweep

rates from 5 s/div to 1 /us/div; and a 10X sweep magnifier to

increase the fastest sweep rate to 0.1 jus/div. Three sweep

modes are availa le: AUTO, NORM, and SINGLE SWEEP.

The trigger circuit provides a sta le display over the full

vertical andwidth.

External horizontal input provides deflection factors of

20 mV to 2 V/div for X-Y operation.

The crt is a direct-view ista le storage device having an

8 x 10 div internal graticule. Each graticule div equals 0.25

inch. An enhance mode increases single-sweep writing speed.

An internal 1 kHz cali rator is connected internally to the

vertical inputs and to a front-panel connector.

The 314 is operated from a line voltage of 100, 115, 120,

200, 230, or 240 V ac, 48 to 440 Hz, or from a +12 or

+24 V dc source.

The 314 automatically reduces the display intensity

level when sweep speeds of 10 ms and slower are

selected. This reduces the possibility of accidentally

burning the sensitive storage crt phosphor at slower

sweep speeds.

When changing from sweep speed settings faster than

10 ms to settings of 10 ms and slower readjust the

INTENSITY control setting as necessary for a visible

display.

SAFETY INFORMATION

The instrument is designed to operate from a single-phase

power source having one of the current-carrying conductors

(the neutral conductor) at ground (earth) potential. Oper

ation from power sources where oth current-carrying

conductors are live with respect to ground (such as phase-

to-phase on a three-wire system) is not recommended since

only the line conductor has overcurrent (fuse) protection

within the instrument.

The instrument has a three-wire power cord with a three-

terminal polarized plug for connection to the power source

and safety earth. The ground (earth) terminal of the plug

is directly connected to the instrument frame. For elec

tric shock protection, insert this plug into only a mating

outlet with a safety earth contact.

REV. A, DEC. 1975 314 Operators 1

POWER-SOURCE REQUIREMENTS AC Power Source Selection

The instrument may e operated on 100, 115, 120, 200,

230, or 240 V ac, from 48 to 440 Hz, or from a +12 or +24

V dc source.

The 115 to 230 V Line-Voltage and Regulating Range

Selectors are located on the rear panel, as shown in Fig. 2.

The AC-DC Selector switch is located on the right-side

panel, as shown in Fig. 3.

This instrument may be damaged if operated

with the Line-Voltage and Regulating-Range

Selector switches set for the wrong applied

line voltage.

To convert from one nominal line-voltage range to the other,

move the Line-Voltage and Regulating-Range Selector

Fig. 2. Line Voltage and Range Selector switches. Fig. 3. AC-DC Selector and DC Power-Source input.

2314 Operators @

switches (see Fig. 2) to indicate the correct nominal ac line

voltage. Be sure that the AC-DC Selector switch (see Fig.

3) is in the 115 V/230 V position. See Ta le 1 for regula

ting ranges. A 115 to 230 V adapter may e required for

the power-line cord.

The internal line voltage fuse value must be changed

when changing the nominal line voltage setting.

WARNING I

Dangerous potentials exist at several points through

out the interior of this instrument. Refer to the 314

Service manual for precautions and procedures con

cerning cabinet removal fuse replacement and nomi

nal line voltage selection. Only qualified service

personnel should attempt fuse replacement or other

internal maintenance procedures.

TABLE 1

Regulating-Range

Selector Position

Nominal Regulating Range

115 V 230 V

LO 100 V ±10 V 200 V ±20 V

M 115 V ±11.5 V 230 V ±23 V

HI 120 V ±12 V 240 V ±24 V

DC Power Source Selection

Move the AC-DC Selector switch (see Fig. 3) to the appro

priate DC position (11 V—14 V or 22 V—28 V). Connect

the DC Input connectors (+ and —) to the dc power source.

REV. B, MAR. 1977 314 Operators 3

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