Tektronix 2213A Manual de usuario

Tektronix-

2213A

OSCILLOSCOPE

OPERATORS

INSTRUCTION MANUAL

2213A Operators

TABLE OF

Page

LIST OF ILL STRATIONS

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

LIST OF TABLES ..................................................... ii

OPERATORS SAFETY S MMARY

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

Section 1 GENERAL INFORMATION

INTRODUCTION

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

1-1

SPECIFICATION

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

1-1

CALIBRATION

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

1-9

REPACKAGING FOR SHIPMENT .... 1-9

Section 2 PREPARATION FOR SE

FIRST-TIME START UP

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

2-1

SAFETY

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

2-1

LINE VOLTAGE

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

2-1

POWER CORD

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

2-1

LINE FUSE

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

2-1

INSTRUMENT COOLING

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

2-2

CONTROLS, CONNECTORS, AND

INDICATORS

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

DISPLAY, POWER, AND PROBE

ADJUST

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

VERTICAL

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

2-4

HORIZONTAL

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

2-5

TRIGGER

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

2-6

REAR PANEL

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

2-7

Section 3 OPERATORS FAMILIARIZATION

GENERAL OPERATING

INFORMATION

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

-1

GRATICULE

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

-1

GROUNDING

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

-1

SIGNAL CONNECTIONS

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

-1

CONTENTS

Section 3 OPERATORS FAMILIARIZATION (cont)

INPUT COUPLING CAPACITOR

PRECHARGING

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

-1

OPERATOR’S ADJUSTMENTS

........

INTRODUCTION

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

BASELINE TRACE

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

TRACE ROTATION

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

PROBE COMPENSATION

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

Section 4 OPERATING PROCED RES

BASIC APPLICATIONS

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

4-1

INTRODUCTION

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

4-1

INDEX TO BASIC APPLICATION

PROCEDURES

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

4-1

VOLTAGE MEASUREMENTS

........

4-1

TIME MEASUREMENTS

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

4-4

TELEVISION DISPLAYS

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

4-8

DELAYED-SWEEP

MAGNIFICATION

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

4-9

Section 5 OPTIONS AND ACCESSORIES

INTRODUCTION

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

5-1

OPTIONS

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

5-1

INTERNATIONAL POWER CORDS 5-1

STANDARD ACCESSORIES

........

5-1

OPTIONAL ACCESSORIES

..........

5-1

FRONT PANEL ILL STRATION

CHANGE INFORMATION

REV DEC 198 I

2213A Operators

LIST OF ILL STRATIONS

Figure Page

The 221 A Oscilloscope ....................................................................................................................................... iv

1-1 Maximum input voltage vs frequency derating curve for CH 1 OR X, CH 2 OR Y, and EXT INPUT connectors .. 1-7

1- 2 Physical dimensions of the 221 A Oscilloscope.................................................................................................... 1-8

2- 1 Optional power cords............................................................................................................................................ 2-1

2-2 Fuse holder and power cord connector................................................................................................................ 2-2

2- Power and display controls and indicators and PROBE ADJUST output

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

2-4 Vertical controls and connectors .......................................................................................................................... 2-4

2-5 Horizontal controls................................................................................................................................................ 2-5

2-6 Trigger controls, connector, and indicator............................................................................................................ 2-6

2- 7 Rear panel connector............................................................................................................................................ 2-7

- 1 Graticule measurement markings.......................................................................................................................... -1

- 2 Probe compensation ............................................................................................................................................ -4

4- 1 Peak-to-peak waveform voltage .......................................................................................................................... 4-2

4-2 Instantaneous voltage measurement.................................................................................................................... 4-

4- Common-mode rejection ...................................................................................................................................... 4-4

4-4 Voltage ratios........................................................................................................................................................ 4-4

4-5 Time Duration........................................................................................................................................................ 4-5

4-6 Rise Tim e.............................................................................................................................................................. 4'6

4-7 Time difference between pulses on time related signals....................................................................................... 4-6

4-8 Phase difference.................................................................................................................................................... 4~7

4-9 High-resolution phase difference .......................................................................................................................... 4-8

4-10 Delayed-sweep magnification................................................................................................................................ 4-9

LIST OF TABLES

Table Page

1-1 Electrical Characteristics........................................................................................................................................ 1-2

1-2 Environmental Characteristics...............................................................................................................................

1- Physical Characteristics........................................................................................................................................ 1"7

2- 1 VERT MODE Trigger Source................................................................................................................................ 2-7

12213A Operators

“J

1 J

OPERATORS SAFETY S MMARY

The general safety information in this part of the summary is for both operating and servicing personnel. Specific warnings

and cautions will be found throughout the manual where they apply and do not appear in this summary.

Terms in This Manual

CAUTION statements identify conditions or practices that

could result in damage to the equipment or other property.

WARNING statements identify conditions or practices

that could result in personal injury or loss of life.

Terms as Marked on Equipment

CAUTION indicates a personal injury hazard not immedi

ately accessible as one reads the markings, or a hazard to

property, including the equipment itself.

DANGER indicates a personal injury hazard immediately

accessible as one reads the marking.

Symbols in This Manual

This symbol indicates where applicable

A cautionary or other information is to be found.

For maximum input voltage see Table 1-1.

Symbols As Marked on Equipment

DANGER — High voltage.

Protective ground (earth) terminal.

ATTENTION — Refer to manual.

LvJ

Power Source

This product is intended to operate from a power source

that does not apply more than 250 volts rms between the

supply conductors or between either supply conductor and

ground. A protective ground connection by way of the

grounding conductor in the power cord is essential for safe

operation.

Grounding the Product

This product is grounded through the grounding conductor

of the power cord. To avoid electrical shock, plug the power

cord into a properly wired receptacle before connecting to

the product input or output terminals. A protective ground

connection by way of the grounding conductor in the power

cord is essential for safe operation.

Danger Arising From Loss of Ground

Upon loss of the protective-ground connection, all accessi

ble conductive parts (including knobs and controls that may

appear to be insulating) can render an electric shock.

se the Proper Power Cord

Use only the power cord and connector specified for your

product.

Use only a power cord that is in good condition.

For detailed information on power cords and connectors

see Figure 2-1.

se the Proper Fuse

To avoid fire hazard, use only a fuse of the correct type,

voltage rating and current rating as specified in the parts list

for your product.

Do Not Operate in Explosive Atmospheres

To avoid explosion, do not operate this product in an explo

sive atmosphere unless it has been specifically certified for

such operation.

Do Not Remove Covers or Panels

To avoid personal injury, do not remove the product covers

or panels. Do not operate the product without the covers

and panels properly installed.

221 A Operators

The 221 A Oscilloscope.

Section 1—221 A Operators

" 1

GENERAL INFORMATION

INTROD CTION

The TEKTRONIX 221 A Oscilloscope is a rugged, light

weight, dual-channel 60 MHz instrument that features a

bright, sharply defined trace on an 80- by 100 mm cathode-

ray tube (crt). Its vertical system supplies calibrated deflec

tion factors from 2 mV per division to 5 V per division.

Trigger circuits enable stable triggering over the full band

width of the vertical system. The horizontal system provides

calibrated sweep speeds from 0.5 s per division to 50 ns per

division, along with a delayed-sweep feature. A XI0 magni

fier circuit extends the maximum sweep speed to 5 ns per

division when the SEC/DIV switch is set to 0.05 fis per

division.

The instrument is shipped with the following standard

accessories:

1 Operators manual 2 Probe packages

1 Power cord

For part numbers and information about instrument ac

cessories, refer to the “Options and Accessories” section of

this manual.

The service manual and all other optional accessories are

orderable from Tektronix, Inc. A local Tektronix Field Office,

representative, or the Tektronix product catalog can provide

ordering and product information.

SPECIFICATION

The following electrical characteristics (Table 1-1) are

valid for the 221 A when it has been adjusted at an ambient

temperature between +20°C and + 0°C, has had a warm

up period of at least 20 minutes, and is operating at an

ambient temperature between 0°C and +50°C (unless oth

erwise noted).

Items listed in the “Performance Requirements” column

are verifiable qualitative or quantitative limits, while items

listed in the “Supplemental Information” column are either

explanatory notes, calibration setup descriptions, perfor

mance characteristics for which no absolute limits are speci

fied, or characteristics that are impractical to check.

Environmental characteristics are given in Table 1-2. The

221 A meets the requirements of MIL-T-28800C, para

graphs 4.5.5.1. , 4.5.5.1.4, and 4.5.5.1.2.2 for type III,

Class 5 equipment, except where otherwise noted.

Physical characteristics of the instrument are listed in

Table 1- .

REV DEC 198 1-1

General Information—2213A Operators

Table 1-1

Electrical Characteristics

Characteristics Performance Requirements Supplemental Information

VERTICAL DEFLECTION SYSTEM

Deflection Factor

Range 2 mV per division to 5 V per division

in a 1-2-5 sequence.

5 mV per division to 5 V per division

gain is adjusted with VOLTS/DIV switch

set to 10 mV per division.

2 mV per division gain is adjusted

with VOLTS/DIV switch set to 2 mV

per division.

Accuracy ± %

Range of VOLTS/DIV Variable Control Continuously variable between

settings. Increases deflection factor

by at least 2.5 to 1.

Step Response Rise Time Rise time is calculated from the formula:

Rise Time 0. 5

0°C to + 5°C Bandwidth (— dB)

5 mV per Division to 5 V per

Division 5.8 ns or less.

0°C to 50°C

2 mV per Division to 5 V per

Division 7.0 ns or less.

Bandwidth (— dB)

0°C to + 5°C

2 mV per Division Dc to at least 50 MHz.

Measured with a vertically centered

6-division reference signal from a 50 Q

source driving a 50 (1 coaxial cable

that is terminated in 50 fl, both at

the input connector and at the probe

input, with the VOLTS/DIV Variable

control in the CAL detent.

5 mV per Division to 5 V per

Division Dc to at least 60 MHz.

0°C to +50°C

2 mV per Division to 5 V per

Division Dc to at least 50 MHz.

AC Coupled Lower Limit 10 Hz or less at - dB.

Bandwidth Limiter Upper limits (- dB) bandpass at

10 MHz ±15%.

Chop Mode Switching Rate 500 kHz ± 0%.

Input Characteristics

Resistance 1 Mfl ±2%.

Capacitance 20 pF ±2 pF.

Maximum Safe Input Voltage 2 ^ ^

DC Coupled 400 V (dc + peak ac) or 800 V ac p-p

to 10 kHz or less.

See Figure 1 -1 for derating curve.

AC Coupled 400 V (dc + peak ac) or 800 V-ac p-p

to 10 kHz or less.

1-2 REV MAR 1984

General Information—2213A Operators

Table 1-1 (cont)

Characteristics Performance Requirements Supplemental Information

VERTICAL DEFLECTION SYSTEM (cont)

Common-Mode Rejection Ratio

(CMRR) At least 20 to 1 at 25 MHz. Checked at 10 mV per division for

common-mode signals of 6 divisions or

less with VOLTS/DIV Variable control

adjusted for best CMRR at 50 kHz.

Trace Shift with Attenuator Rotation 0.75 division or less. VOLTS/DIV Variable control in CAL

detent.

Trace Shift as VOLTS/DIV

Variable Control is Rotated 1.0 division or less.

Trace Shift with Invert 1.5 division or less.

Channel Isolation Greater than 100 to 1 at 25 MHz.

TRIGGER SYSTEM

TRIGGER Sensitivity

P-P AUTO/TV LINE and NORM

Modes

Internal

External trigger signal from a 50 Q

source driving a 50 Q coaxial cable

terminated in 50 Q at the input connector.

5 MHz 60 MHz

0. div 1.0 div

External 40 mV 150 mV

Lowest Useable Frequency in P-P

AUTO Mode 20 Hz with 1.0 division internal

or 100 mV external.

TV FIELD Mode 1.0 division of composite sync.

EXT INPUT

Maximum Input Voltage 400 V (dc + peak ac) or 800 V ac p-p

at 10 kHz or less. See Figure 1 -1 for derating curve.

Input Resistance 1 Mfl ±2%.

Input Capacitance 20 pF ±2.5 pF.

AC Coupled 10 Hz or less at lower - dB point.

LEVEL Control Range (NORM)

INT Can be set to any point of the trace

that can be displayed.

EXT, DC At least ± 1.6 V, .2 V p-p.

EXT, DC -=- 10 At least ± 16 V, 2 V p-p.

VAR HOLDOFF Control Increases Sweep holdoff time by at

least a factor of 10.

REV DEC 198 1-3

General Information—2213A Operators

Table 1-1 (cont)

Characteristics Performance Requirements Supplemental Information

HORIZONTAL DEFLECTION SYSTEM

Sweep Rate 0.5 s per division to 0.05 ns per

division in a 1-2-5 sequence. X I0

magnifier extends maximum sweep

speed to 5 ns per division.

Accuracy nmagnified Magnified Sweep accuracy applies over the

center 8 divisions. Exclude the first

25 ns of the sweep for magnified

sweep speeds and anything beyond

the 100th magnified division.

+ 15°C to + 5°C ± % ±4%

0°C to +50°C ±4% ±5%

POSITION Control Range Start of sweep to 10th division in XI or

100th divisions in XI0 will position past

the center vertical graticule line.

Sweep Linearity ±7%. Linearity measured over any 2 of the

center 8 divisions. With magnifier in XI0,

exclude the first 25 ns and anything past

the 100th division.

Variable Control Range Continuously variable between

calibrated settings. Extends the sweep

speed by at least a factor of 2.5.

Delay Time

Delay Positions Minimum less than 1.0 ns 20 vs and

0.4 ms.

MULTIPLIER Increases delay time by at least a

factor of 50.

Jitter One part or less in 10,000 (0.01%) of

the maximum available delay time.

X-Y OPERATION (XI MAGNIFICATION)

Deflection Factory Same as Vertical Deflection System

(with VOLTS/DIV Variable controls in

CAL detent).

Accuracy

X-Axis ±4%.

Measured with a dc-coupled, 5-division

reference signal.

Y-Axis Same as Vertical Deflection System.

Bandwidth (- dB )

X-Axis Dc to at least 2 MHz.

Measured with a 5-division

reference signal.

Y-Axis Same as Vertical Deflection System.

Phase Difference Between X- and

Y-Axis Amplifiers ± ° from dc to 100 kHz. With dc-coupled inputs.

1-4 REV DEC 198

General Information—221 A Operators

Table 1-1 (cont)

Characteristics Performance Requirements Supplemental Information

PROBE ADJUST

Output Voltage of PROBE ADJUST

Jack 0.5 V ±5%.

Repetition Rate 1 kHz ±20%.

Z-AXIS INPUT

Sensitivity 5 V causes noticeable modulation.

Positive-going input decreases

intensity.

Useable frequency range is

dcto 10 MHz.

Maximum Safe Input Voltage 0 V (dc + peak ac) or 0 VC p-p ac at

1 kHz or less.

Input Resistance lOkfl ±10%.

POWER SOURCE

Line Voltage Ranges 90 V to 250 V.

Line Frequency 48 Hz to 440 Hz.

Maximum Power Consumption 40 W (70 VA).

Line Fuse 1.0 A, 250 V, slow-blow.

CATHODE-RAY TUBE

Display Area 80 by 100 mm.

Standard Phosphor P 1.

Nominal Accelerating Voltage 14 kV.

REV DEC 198 1-5

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