Tektronix 507 Manual de usuario

MODIFICATION NOTICE FOR

TYPE 507

EFFECTIVE SERIAL-NUMBER 128

CHANGE R50 FROM 47K 1/2W FIXED COMP 10% 302-473

TO 10K 1/2W FIXED COMP 10% 302-103

C57 FROM

ADD C54 PBT 5 JJ FD 1000V 285-538

R54 I OK 1/2W FIXED COMP 10% 302-103

MO DIFICATION NO 2092

SWEEP TRIGGER & TR IP PULSE

JUNES, 1959

MODI FI CATI ON NOT! CE FOR

TYPE 507

EFFECTIVE SERIAL NUMBER 128

CHANGE C267 FROM 1 5 TO 4„ 7

C260 FROM 01 TO 47 PF

MODIFICATION NO 2092

TIM E MARK GENERATOR

JUNE 5, 1959

CORRECTION FOR TYPE 507

R667 SHOULD BE LABELED R674

HEATER WI RING DI AG

POWER S PPLY CHASSI S

J NE 5, 1959

MODIFICATION NOTICE FOR

TYPE 507

EFFECTIVE SERIAL NO 142

781-501

’ 81-579

MODIFICATION NO 7.171

TIME MARK GENERATOR

J NE 5, 1959

CHANGE C 7 6 7 FROM 4.7 PF 500V

TO 1 . 5 PF 500V

MODI FI CAT1 ON NOT IC E FOR

TYPE 507

EFFE C TIVE SERIAL N MBER 142

CHANGE R635 FROM 39K 1/2W FIX E D COMP 10% 302-393

TO 36K 1/2W FIXED COMP 10% 302-563

R636 FROM 18K 1/2W FIXE D COMP 10% 302-183

TO 27K 1/W FIXED COMP 10% 302-273

R637 FROM 180K 1/2W FIX E D COMP 10% 302-184

TO 270K 1/2W FIXED COMP 10% 302-274

R655 FROM 100K 1/2W FIXED COMP 10% 302-104

TO 300K 1/2W FIXED COMP 10% 302-334

R656 FROM27K 1/2W FIXED COMP 10% 302-273

TO 82K 1/2W FIXED COMP 10% 302-823

R657 FROM 270K 1/2W FIXED COMP 10% 302-274

TO 820K I/2 W FIXED COMP 10% 302-824

MODI FI CATI ON NO 2174

POWER S PPLY

J NE 5. 1959 •

MODIFICATION NOTICE FOR

TYPE 507

EFFECTIVE SERIAL NO 14’

REMOVE L 3 2 4 2. 5 JJH COIL 108-055

MODIFICATION NO 2191

HORIZONTAL AMPLIFIER

J NE 5, 1959

MODI FI CATI ON NOTI CE FOR

TYPE 507

EFFE C TIVE SERIAL N MBER 170

ADD R445 150 1/2W FIXED COMP 10% 202-151

TO R443

R446 150 1/2W FIX E D COMP 10% 302-151

R445

150

■'VW- CRT VERT DEFL PLATES

TO R444- -Wv—

R446

150

1 ,

JMODI FI CATI ON NO 2229

VERTI CAL AMPLI FI ER

J NE 5, 1959

CATHODE-RAY OSCILLOSCOPE

TYPE 507

INSTRUCTION

MAN AL

TEKTRONIX, INC

MANUFACTURERS OF CATHODE-RAY AND VIDEO TEST INSTRUMENTS

Sunset H ighw ay and Barnes Road • P O Box 831 • Portland 7, Oregon, U S A

Phone: CYpress 2-2611 • Cables: T ektronix

TYPE 507 SERIAL NUMBER

____

1M-507-1

Portland, Oregon Printed in the

United States of America All rights

reserved Contents of this publica

tion may not be reproduced in any

form without permission of the copy

right owner

TYPE 507 OSCILLOSCOPE

AND ACCESSORIES

—

I I

I ]

I I

CONTENTS

GENERAL DESCRIPTION SECTION 1

Vertical Deflection System. Sweep Circuit. Power Sup

plies. Miscellaneous. Functions of Controls and Con

nectors.

CIRC IT DESCRIPTION SECTION 2

Sweep. Vertical Deflection System. Cathode-Ray Tube

Circuit. High-Voltage Power Supply. Time Mark Gen

erator. External Power Supply.

MAINTENANCE SECTION 3

Preventive Maintenance. Analyzing Trouble.

ADJ STMENT PROCED RE SECTION 4

PARTS LIST SECTION 5

SCHEMATIC DIAGRAMS SECTION 6

ACCESSORIES SECTION 7

507 ®

H .

GENERAL DESCRIPTION

The Tektronix Type 507 Oscilloscope is a specialized instrument

designed primarily for high-voltage surge testing as applied to

power transformers, high-voltage insulators, lighting arrestors and

allied components, and their associated design and acceptance

tests

The use of a 24-kv accelerating potential on a new type cathode

ray tube permits photographic recording of single sweeps at the

maximum writing-rate permitted by the vertical deflection and

sweep circuits The vertical deflection system provides a risetime

of approximately 5 millimicroseconds and a sensitivity of approx

imately 50 v/cm An external length of delay cable can be inserted

into the vertical-input signal circuit to permit viewing of the lead

ing edge of the waveform which triggers the sweep Time markers

are available for convenient calibration of the sweep

The Type 507 consists of two units, indicator and power supply,

mounted on a Scope-Mobile, thus making a convient mobile unit

If desired, the units may be lifted off the Scope-Mobile for bench

use

VERTICAL DEFLECTION SYSTEM

Transient Response

Risetime between 10-percent and 90-percent

amplitude points is about 5 millimicroseconds

(005 microseconds) A passive damping network

inserted in the deflection leads is adjusted for

optimum transient response without overshoot

or ringing

The maximum vertical sensitivity with a Type

T507P cathode-ray tube operated at 24-kv ac

celerating is 50 v/cm

Attenuator

A step attenuator with a characteristic imped

ance of 72 ohms is provided in the vertical-input

signal circuit The attenuator is composed of

ten equal resistors of 7 2 ohms each, mounted

on a tap switch The percentage of input signal

applied to the deflection plates can be selected

by the tap switch from 10 percent to 100 per

cent in 10-percent steps

Signal Mode

A three-position switch reverses the deflection-

plate polarity; the center position of the switch

is used in conjunction with a trigger-selector

switch to apply markers for photographing time

references

Positioning Switch

The Type 507 has a seven-step vertical-posi

tion switch with 50-volt steps of —150 v, —100 v,

—50 v, 0, +50 v, +100 v and +150 v A sep

arate two-position switch selects either 50-volt

steps or continuously variable adjustment

External Voltmeter Connections

Terminals are provided for a high-impedance

(50000/v) dc voltmeter, permitting vertical cali

bration when using the variable positioning

GENERAL DESCRIPTION — TYPE 507 1-1

Signal Delay

Two standard UHF connectors are provided on

the rear of the instrument for insertion of an

external length of delay cable into the vertical-

input signal circuit Choice of the appropriate

length and type of cable is at the discretion of

the user; no delay cable is furnished with the

instrument A signal delay permits the sweep to

be triggered and under way before the signal is

applied to the vertical deflection plates

SWEEP CIRC IT

Type

Triggered, hard-tube bootstrap sweep circuit

with inverter to produce balanced deflection

Rates

An eleven-position switch selects rates of 02,

05, 1, 2, 5, 1, 2, 5, 10, 20 and 50 MICRO-

SECONDS/CM, with a maximum displacement

error of 2 percent over the center 8 cm of the

10-cm sweep length

Sweep Starting Time

The horizontal sweep starts approximately

100-m^sec after the signal or triggering pulse

arrives at the rear-panel connector An inserted

signal delay of approximately 150 m//,sec permits

the sweep to be triggered and under way before

the signal is applied to the vertical deflection

plates

Duty Cycle Limitation

A duty-cycle limiting control automatically

limits the duty cycle of the sweep circuit to about

10 percent to avoid exceeding the dissipation

limits of some of the circuit components The

limiting system serves purely a protective func

tion and does not provide a frequency dividing

operation

The following table shows the maximum per

missible repetition rate for each of the avail

able sweep times per centimeter

SWEEP TIME MAXIMUM

REPETITION RATE

50 jasec/cm 600 c/s

20 /xsec/cm 15 kc

10 jusec/cm 3 kc

5 use c/cm 6 kc

2 jasec/cm 10 kc

1 fxse c/cm 20 kc

5 jitsec/cm 50 kc

2 fxsec/cm 50 kc

1 fi sec/cm 50 kc

05 fisec/ cm 50 kc

02 fjisec/cm 50 kc

Triggering

A triggering phase-inverter amplifier in con

junction with a selector switch permits the sweep

circuit to be triggered from either positive- or

negative-going portions of the observed signal,

or from positive or negative triggers from an

external source A trigger voltage range of 100

volts to 3000 volts amplitude will be adequate

for stable triggering The MARKER position on

the selector switch must be used when time

markers are desired

Sweep Mode

A two-position switch provides for either re

petitive or single-sweep operation When the

switch is in the single-sweep position, pressing

the RESET button arms the sweep circuit The

sweep can then be triggered internally, by MAN

UAL TRIGGER, or by an external trigger The

1-2 GENERAL DESCRIPTION — TYPE 507

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