Tektronix 7D14 Manuale utente

TEKTRONIX

7D14

DIGITAL

COUNTER

B050000

and

INSTRUCTION

MANUAL

Tekt ronix

Inc.

P.O.

Box

500

Beaverton

Oregon

97005

Serial

Num ber

070-1663-00

973

WARRANTY

All

TEKTRONIX

instrum ent s

are

warrant ed

against

defective

m at erials

and

work m anship

for

one

year

Any

quest ions

wit h

respect

the

warrant y

should

taken

wit h

your

TEKTRONIX

Field

Engineer

represent at ive

All

request s

for

repairs

and

replacem ent

part s

should

directed

the

TEKTRONIX

Field

Office

represent at ive

your

area

Thi s

will

assure

you

the

fast est

possible

service

Please

include

the

instrum ent

Type

Num ber

Part

Num ber

and

Serial

Num ber

wit h

all

request s

for

part s

service

Speci fications

and

price

change

privileges

reserved

1971

new

m at erial

1973

Tekt ronix

Inc.

Beaverton

Oregon

Printed

the

Unit ed

States

Am eri ca

All

rights

reserved

Content s

this

publicat ion

m ay

not

reproduced

any

form

wit hout

perm i ssi on

Tekt ronix

Inc.

U.S.A.

and

foreign

TEKTRONIX

products

covered

U.S.

and

foreign

patents

and

patents

pending

TEKTRONIX

regi stered

t radem ark

Tekt ronix

Inc.

7D14

(

B050000

)

TABLE

CONTENTS

SECTION

SPECIFICATION

Introduct ion

Electrical

Characterist ics

Environm ental

Characterist ics

Physical

Characterist ics

Page

1-1

1-5

SECTION

OPERATING

INSTRUCTIONS

Installation

Display

Controls

and

Connectors

First

Tim e

Operat ion

General

Operat ing

Inform at ion

Measurem ent

Modes

Operat ing

Modes

2-1

2-4

2-5

2-8

2-10

SECTION

CIRCUIT

DESCRIPTION

Introduct ion

Block

Diagram

Descript ion

Detailed

Circuit

Descript ion

3-1

3-3

SECTION

MAINTENANCE

Introduct ion

Prevent ive

Maint enance

Troubleshooting

Replacem ent

Parts

Com ponent

Replacem ent

4-1

4-4

SECTION

CALIBRATION

Recalibration

Interval

Test

Equipm ent

Required

Part

Perform ance

Check

Part



Adjust m ent

5-1

5-5

5-13

SECTION

ELECTRICAL

PARTS

LIST

Abbreviations

and

Sym bols

Parts

Ordering

Inform at ion

SECTION

DIAGRAMS

AND

CIRCUIT

BOARD

ILLUSTRATIONS

Sym bols

and

Reference

Designat ors

Voltage

and

Waveform

Condit ions

7-1

7-2

SECTION

MECHANICAL

PARTS

LIST

Mechanical

Parts

List

Inform at ion

Index

Mechanical

Parts

Illust rat ions

Mechanical

Parts

List

Accessories

8-1

CHANGE

INFORMATION

Abbreviations

and

sym bols

used

this

m anual

are

based

taken

directly

from

IEEE

Standard

260

Standard

Sym bols

for

Unit s



MIL

STD

12B

and

ot her

standards

the

elect ronics

industry

Change

inf orm at ion

any

locat ed

the

rear

this

m anual

 

)

MEASUREMENT

INTERVAL

TRIGGER

LEVEL

SLOPE

m s

GATE

m s

100

m s

PRESET

VAR

MONITOR

INPUT

SENS

VOLTS

EXT

GATE

TRIG

SOURCE

100

m V

MANUAL

GATE

 

100

m V

5002

1 

OFF

]

-RESET

COUPLING

DISPLAY

TIME

INCREASE

525

MHz

INPUT

525

MHz

MAX

REF

FREQ

INT

MONITOR

MHz

5022

10V

RMS

MAX

IMS

20pF

200V

MAX

EXT

TEKTRONIX

DIGITAL

COUNTER

7014

Fig

1-1

Digit al

Count er

Plug

Unit

7D14

Sect ion

1-7014

(

B050000

)

SECTION

SPECIFICATION

Change

inf orm at ion

any

affect ing

this

sect ion

will

found

the

rear

this

m anual

Introduct ion

trigger

pickoff

from

vert ical

am pli fier

unit

(

which

allows

sim ult aneous

signal

viewing

and

count ing

and

trigger

indicat or

analog

CRT

display

view

the

shaped

input

signal

The

Digit al

Count er

plug

unit

designed

for

use

wit h

Tekt ronix

7000

series

Oscilloscopes

equipped

wit h

readout

syst em

The

7D14

uses

the

readout

syst em

display

eight

digit

readout

the

CRT

the

associ at ed

oscilloscope

The

7D14

will

m easure

frequency

from

525

m egahert z

frequency

rat io

from

105

and

tot alize

(

count

num ber

event s

)

from

108.

The

feat ures

count ing

capability

525

m egahert z

wit hout

prescaling

input

im pedance

ohm s

m egohm

blanking

all

zeros

the

left

the

m ost

significant

digit

The

following

elect rical

characterist ics

are

valid

for

instrum ent s

calibrat ed

am bient

t em perat ure

between



and



aft er

m inut e

warm up

period

TABLE

1-1

ELECTRICAL

Characterist ic

Perform ance

Requi rem ent

Supplem ent al

Inform at ion

CHANNEL

(

Count

Channel

)



INPUT

SENS

VOLTS

Swit ch

Setting

MS2

Frequency

Range

Coupled

525

m ega

hertz

525

m ega

hertz



Coupled

200

kilohert z

525

m egahert z

hertz

525

m egahert z

Sensit ivity

Com

100

m illivolt s

peak

100

m illivolt s

peak

Input



Resistance

indicat ed

INPUT

SENS

Swit ch

wit hin

VSWR

ohm

position

1.5

Capacit ance

Not

applicable

picofarads

wit hin

when

INPUT

SENS

set

input

im pedance



 

1-1

Speci fication

7014

(

B050000

)

TABLE

1-1

(

cont

)

Characterist ic

Perform ance

Requi rem ent

Supplem ent al

Inform at ion

Maxi m um

Input

Voltage

volt s

RMS

200

volt s

(

Peak

)

m egahert z

volt s

(

Peak

)

525

m ega

hertz

TRIG

SOURCE

Sensit ivity

1.5

divisions

vert ical

deflect ion

m ini m um

Frequency

Range

TRIG

SOURCE

coupled

Depends

upon

am pli fier

plug

unit

and

oscilloscope

being

used

MHZ

Li m it s

upper

bandwidth

(

-3

poi nt

)

m egahert z

wit hin

m egahert z

Trigger

PRESET

Triggers

the

positive

slope

volt

level

VAR

LEVEL

SLOPE

control

select s

positive

nega

tive

slope

triggering

Range

INPUT

SENS

Swit ch

Setting

100

m V

+0.5

volt

-0.5

volt

volt s

-5

volt s

10V

+50

volt s

-50

volt s

CCC

MEASUREMENT

INTERVAL

Internal

Tim e

Base

Crystal

Oscillat or

Frequency

m egahert z

Accuracy



Within

0.5

part

per

m illion

Long

Term

Drift

part

less

107

per

m onth

1-2



)

Speci fication

7014

(

B050000

)

TABLE

1-1

(

cont

)

Characterist ic

Perform ance

Requi rem ent

Supplem ent al

Inform at ion

Internal

Gate

Range

m illisecond

through

seconds

Select able

decade

steps

Resolut ion



0.1

hertz

Accuracy

Within

Tim e

Base

Accuracy

Tot al

Count

Frequency

Range

hertz

m egahert z

Coupled

Only

least

0.8

volt

peak

Sensit ivity

Sine

wave

pulse

wit h

-70

duty

cycle

Input

kilohm s

wit hin

picofarads

wit hin

Max

Input

Voltage

volt s

(

Peak

)

m ega

hertz

EXT

GATE

Input

Requi rem ent s

Com pat ible

wit h

TTL

Logic

Turn

Level

Logic

least

Volts

Turn

Off

Level

Logic

" "

+500

m illivolt s

less

Risetim e

500

nanoseconds

(

Maxi m um

)

Fallt im e

500

nanoseconds

(

Maxi m um

)

Minim um

Off

Tim e

500

nanoseconds

Minim um

Tim e

200

nanoseconds

Propagat ion

Delay

Transition

nanoseconds

wit hin

nano

seconds

Transition

nanoseconds

wit hin

nano

seconds

Input

Resistance

8.2

kilohm s

wit hin

Capacit ance

picofarads

wit hin

1-3

Speci fication

7014

(

B050000

)

TABLE

1-1

(

cont

)

Characterist ic

Perform ance

Requi rem ent

Supplem ent al

Inform at ion

EXT

GATE

(

cont

)

Max

Input

Voltage

+15

volt s

(

Peak

)

m ega

hertz

DISPLAY

TIME

Range

Continuously

variable

from

0.1

seconds

less

least

seconds

Detent

Posit ion

(

infinite

)

RESET

Input

Requi rem ent s

least

volt s

positive

going

pulse

Am pli tude

Com pat ible

wit h

TTL

Logic

" "

+500

m illivolt s

less

Logic

least

volt s

Durat ion

least

500

nanoseconds

Input

Resistance

8.2

kilohm s

wit hin

Capacit ance

picofarads

Max

Input

Voltage

+20

volt s

(

Peak

)

m ega

hertz

OUTPUT

SIGNALS

MONITOR

INT

MHZ

Signal

Posit ive

going

pulse

from

int ernal

cryst al

oscillator

Am pli tude

Open

Circuit

volt s

wit hin

Source

Im pedance

Logic

kilohm s

Logic

2.2

kilohm s

m s

Signal

Tim e

m arker

pulses

from

int ernal

gat e

Am pli tude

Open

Circuit

volt s

wit hin



1-4

Speci fication

7014

(

B050000

)

TABLE

1-1

(

cont

)

Characterist ic

Perform ance

Requi rem ent

Supplem ent al

Inform at ion

m s

(

cont

)

Polarity

Posit ive

going

Source

Im pedance

Logic

kilohm

Logic

25.7

kilohm s

CCC

Trigger

Indicat or

CRT

analog

display

trigger

output

Display

Am pli tude

0.2

div

wit hin

Posit ion

Range

Posit ionable

over

div

int ernal

control

Usable

Frequency

Range

System

Dependent

Signal

Delay

nanoseconds

TABLE

1-2

TABLE

1-3

ENVIRONMENTAL

CHARACTERISTICS

PHYSICAL

Refer

the

Speci fication

for

the

associ at ed

oscillo

Size

Fit s

all

7000

series

plug

com partm ent s

Weight

Pounds

Ounces

(

1075

gram s

)

scope

1-5

(

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