Tektronix 310A Manual de usuario

IV IA IM L J A L

Tektronix, Inc.

S.W. Millikan

070-0893-00

Serial Number

TYPE

310M

OSCILLOSCOPE

Way • P. O. Box 00 • Beaverton, Oregon 9700 • Phone 644-0161 • Cables: Tektronix

669

WARRANTY

All Tektronix instruments are warranted

against defective materials and workman

ship for one year. Tektronix transformers,

manufactured in our plant, are warranted

for the life of the instrument.

Any questions with respect to the war

ranty mentioned above should be taken

up with your Tektronix Field Engineer.

Tektronix repair and replacement-part

service is geared directly to the field,

therefore all requests for repairs and re

placement parts should be directed to the

Tektronix Field Office or representative

in your area. This procedure will assure

you the fastest possible service. Please

include the instrument Type and Serial or

Model Number with all requests for parts

or service.

Specifications and price change privi

leges reserved.

Beaverton, Oregon. Printed in the United

Contents of this publication may not be

reproduced in any form without permis

sion of the copyright owner.

Type 310A

TYPE 310A OSCILLOSCOPE

SERIAL ^VERTICAL AMP]

------

VOLTS/DIV

HORIZONTAL

POSITION

VERTICAL

POSITION

SCALE ILIU M

INTENSITY

FOCUS

-----

CALIBRATOR

m il M il 10 H««

E BASE

■TlME/DIV.

stability

RIG. IEVEI

M N CA llM A TID

iM I t

«XT

HO tlZ. M isr

ADJUST

TEKTRONIX. INC

LANO. O tfO O N U S-A

Fig. 1-1. The Type 31OA Oscilloscope.

Type 310A

SECTION 1

TYPE 310A SPECIFICATION

Type 310A

Change information, if any, affecting this section will be fo nd at the rear of the man al.

Introduction

The Tektronix Type 310A Oscilloscope is a portable

precision instr ment designed for eq ipment maintenance

or calibration at its point of se. A DC to fo r megahertz

vertical system provides calibrated deflection factors from

0.01 to 50 volts/division (0.01 to 0.05 volts/division AC

co pled only). The trigger circ its provide stable triggering

over the f ll vertical bandwidth. The horizontal deflection

system provides calibrated sweep rates from 0.2 second to

0.5 microsecond/division. A X5 magnifier allows each

sweep rate to be increased five times and provides a maxi

m m sweep rate of 0.1 microsecond/division in the .5 j SEC

position. X - Y meas rements can be made by applying the

vertical (Y) signal to the vertical INPUT connector and the

horizontal (X) signal to the EXT HORIZ INPUT binding

post on the rear panel (Horizontal Display switch set to

EXT HORIZ). The reg lated DC power s pplies maintain

constant o tp t over a wide variation of line voltages and

freq encies. Total power cons mption is abo t 175 watts.

This instr ment will meet the electrical characteristics

listed in Table 1-1 following complete calibration as given

in Section 5. The performance check proced re given in

Section 5 provides a convenient method of checking instr 

ment performance witho t making internal checks or

adj stments. The following electrical characteristics apply

over a calibration interval of 500 ho rs after a warm p time

of 20 min tes.

TABLE 1-1

ELECTRICAL

Vertical Deflection System

Characteristic Performance Characteristic Performance

Deflection Factor

Calibrated range

.01,.02 and .05

volts/division

(AC only)

3.5 megahertz or greater.

DC co pled 0.1 volt/division to 50 volts/

division in 9 steps. Steps in 1-2-5

seq ence.

Lower —3 dB point,

AC (capacitive) co 

pled

AC co pled 0.01 volt/division to 50 volts/

division in 12 steps. Steps in

1-2-5 seq ence.

Witho t probe Two hertz or less.

With probe 0.2 hertz or less.

Risetime

Acc racy Within 3% of indicated deflec

tion factor.

.1 to 50 volts/

division Approximately 90 nanoseconds.

Uncalibrated (vari

able) range Contin o sly variable between

steps. Extends maxim m ncali

brated deflection factor to at

.01, .02 and .05

volts/division

(AC only)

A pproxim a tely 100 nano

seconds.

least 125 volts/division. Inp t Co pling AC (capacitive) and DC (direct)

Bandwidth

Upper -3 dB point,

AC (capacitive) and

DC (direct) co pled

.1 to 50 volts/

co pled. Selected by front-panel

Inp t Co pling switch.

Fo r megahertz or greater.

Maxim m Inp t Voltage

Inp t RC Characteristics

Resistance

600 volts + peak AC.

One megohm.

division Capacitance 40 picofarads.

1-1

Specification-Type 310A

Characteristic Performance

Triggering

Trigger So rce Internal, external, or line.

Selected by TRIGGER switch.

Trigger Co pling AC (capacitive) or DC (direct)

co pled. Selected by Trigger

Co pling-Mode switch.

Trigger Polarity Sweep can be triggered from

positive-going or negative-going

portion of trigger signal.

Selected by TRIGGER switch.

Trigger Mode Man al trigger adj stable for

desired level or a tomatic trig

gering at average level of trigger

ing waveform with free-r nning

sweep at 50 hertz repetition rate

in absence of adeq ate trigaer

signal. Selected by Trigger

Co pling-Mode switch.

Trigger Sensitivity

Internal (minim m for

stable triggering)

AC 0.25 division of deflection mini

m m, 30 hertz to one kilohertz;

increasing to two divisions at

fo r megahertz. Typical —3 dB

point, 16 hertz.

DC 0.25 division of deflection mini

m m, DC to one kilohertz;

increasing to two divisions at

fo r megahertz.

AUTO 0.25 division of deflection mini

m m, 60 hertz to one kilohertz;

increasing to two divisions at

two megahertz.

External (minim m

signal for stable

triggering)

AC 0.2 volt minim m, 30 hertz to

one kilohertz; increasing to two

volts at fo r megahertz. Typical

—3 dB point, 16 hertz.

DC 0.2 volt minim m, DC to one

kilohertz; increasing to two volts

at fo r megahertz.

AUTO 0.2 volt minim m, 60 hertz to

one kilohertz; increasing to two

volts at two megahertz.

External Trigger Inp t

Inp t Resistance Approximately one megohm.

Characteristic Performance

Time Base

Sweep Rate

Calibrated range 0.5 microsecond to 0.2 second/

division in 18 steps. Steps in

1 -2-5 seq ence. Each sweep rate

can be increased five times with

the X5 magnifier. Extends fast

est sweep rate to 0.1 micro-

second/division.

Unmagnified time

meas rement ac

c racy over center

eight divisions of

gratic le

Within 3% of indicated sweep

rate.

Magnified time meas

rement acc racy

over center eight

divisions of grati

c le (eq ivalent

magnified sweep

rates given)

0.2 microsecond to

40 millisecond/

division

Within 4% of eq ivalent magni

fied sweep rate.

0.1 microsecond/

division Within 5% of eq ivalent magni

fied sweep rate.

Uncalibrated (vari

able) range Contin o sly variable sweep rate

between steps. Extends slowest

ncalibrated sweep rate to at

least 0.5 second/division.

External Horizontal Operation

Deflection Factor 1.5 volt/division, or less, with

HO RIZ GAIN control f lly

clockwise.

X Bandwidth at Upper

—3 dB Point, DC

(direct) co pled

At least 500 kilohertz.

Inp t Resistance Approximately 100 kilohms.

Calibrator

Wave shape Sq are wave.

O tp t Voltage 0.5 to 100 volts peak to peak in

1 1 steps. Steps in 1-2-5 se

q ence.

Voltage Acc racy Within 3% of indicated o tp t

voltage.

Repetition Rate Approximately one kilohertz.

1-2

Specification—Type 310A

Characteristic Performance

Power S pply

Line Voltage Range

110 volts nominal

117 volts nominal

124 volts nominal

220 volts nominal

234 volts nominal

248 volts nominal

99 to 117 volts.

105 to 124 volts.

111 to 132 volts.

198 to 234 volts.

210 to 248 volts.

222 to 264 volts.

Line Freq ency 50 to 800 hertz (increase line

voltage abo t 4% for correct

reg lation at 800 hertz).

Power Cons mption Approximately 175 watts.

Cathode-Ray T be (CRT)

Gratic le

Type External with variable edge light

ing.

Area Eight divisions vertical by 10

divisions horizontal. Each divi-

sion eq als 0.25 inch.

Characteristic Performance

Beam Mod lation 20 volts peak to peak connected

to CRT CATHODE binding

posts provides trace mod lation

at normal intensity.

TABLE 1-2

PHYSICAL

Dimensions (meas red at

maxim m points)

Height 10 7/8 inches (27.6 centi

meters).

Width 6 15/16 inches (17.6 centi

meters).

Depth 17 11/16 inches (44.9 centi

meters).

Finish Anodized fro n t panel and

chassis. Bl e vinyl painted

cabinet.

STANDARD ACCESSORIES

Standard accessories s pplied with the Type 310A are

listed in the Mechanical Parts List at the rear of this man al.

For optional accessories available for se with this instr 

ment, see the Tektronix, Inc. catalog.

7-3

NOTES

SECTION 2

OPE ATING INST UCTIONS

Type 310A

Change information, if any, affecting this section will be found at the rear of the manual.

General

To effectively se the Type 310A, the operation and

capabilities of the instr ment m st be known. This section

describes the operation of the front-panel controls, gives

first-time and general operating information and lists some

basic applications.

Power Requirements

The Type 31OA can be operated from either a 117-volt

or a 234-volt nominal line-voltage so rce. Two a xiliary

windings in addition to the standard windings allow the

nominal primary voltage to be increased or descreased in

steps of seven volts from 117-volts nominal (to provide

110, 117 or 124 volt nominal operation) or 14 volt steps

from 234-volts nominal (to provide 220, 234 or 248-volt

nominal operation). As the nominal operating voltage is

changed, the reg lating range of the power s pply changes

also, to provide reg lated o tp t voltages with inp t line

voltages abo t 10% lower and 6% higher than the nominal

voltage. The reg lating range for each line voltage that this

instr ment can be wired for is as follows.

110-volts nominal

117-volts nominal

124-volts nominal

220-volts nominal

234-volts nominal

248-volts nominal

99 - 117 volts

105-124 volts

111 -132 volts

198 - 234 volts

210 -248 volts

222 - 264 volts

This instr ment will reg late over a line freq ency range

of 50 to 800 cycles. For correct reg lation at 800 cycles,

increase the minim m line voltage req irement abo t 4%.

Power cons mption is approximately 175 watts. To convert

to a different line voltage than the one for which the instr 

ment is wired, se the following proced re.

1. Disconnect the instr ment from the power so rce.

2. Connect the transformer for the desired line voltage

as shown in Fig. 2-1.

Mm-

99-117

volt*

193-234

volt*

........................

— ^

l 87654321 J

^ 87654321 j

105-124

volts

117-Volt Nominal Connection*

□ c

111-132

volts

j t

k. 87654321 J 87654321 j

210-248

volts

230-Volt Nominal Connections

222-264

volts

2-1

Fig. 2-1. Power transformer primary connections.

Operating Instructions-Type 310A

2-2

Fifl. 2-2, Front- and rear-panel controls and connectors.

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