Tektronix 7B50 Manuale utente

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Altri manuali Tektronix Base temporale

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Tektronix 7B85 Manuale utente

Tektronix

Tektronix 7B50A Manuale utente

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Tektronix 7B92A Manuale utente

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Tektronix 7T11 Manuale utente

Tektronix

Tektronix 7B80 Manuale utente

Tektronix

Tektronix 7B53A Manuale utente

Tektronix

Tektronix 71310 Manuale utente

Tektronix

Tektronix 7B92A Manuale utente

Tektronix

Tektronix 7B15 Manuale utente

Tektronix

Tektronix 7B92A Manuale utente

Tektronix

Tektronix 7B52 Manuale utente

Tektronix

Tektronix 7B53A Manuale utente

Manuali Base temporale popolari di altre marche

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Snell & Wilcox

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EndRun

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1

Ν

ST

F

Z

U

C

Τ

10

Ν

ΜΑΝ

V

A

L

Serial

Nu

mber

ή

:-!

:

~

j



_3

c

7

Β50

TIME

B

AS

E

Te

k

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o

n

ix,

I

n

c

.

S

.

W

.

M

illi

k

an

W

ay

"

Ρ

.

Ο

.

Box 500

"

B

eave

r

to

n

,

Orego

n

97005

"

Ph

o

n

e

644-0161

"

Cables

:

Te

k

tronix

070-0975-00



1069

Ι

"

ι

1

αη

U

f

ο

;

ς:

f

ι

or

the

Α

ηΝ

r

a

n

ty

up

-

A

i

Τ

el,4ori

serv

ί

c

;-

εϊτ

,ni,,

are

'

ν

v

crrcrc

ί

e

ir?

σιη

eη

t .

with

respect

to

t

he

ωα

r-

9io

ιι

e

d

above

should

be

ta

k

e

n

νου

rΤ

ekt ιοη

l

χ

F

ield

E

nl

i

n

eer

.

repair mind

replacen~enl

-

part

'_

ιε

~

α

1'e

d

directly

to

the

fiel

d

,

έ

here_'I

ο

re

all

re

qu

ests

for

repairs

and

re-

placement

ρι

-

ι

rts

should

be

directed

to

tl~e

Tektronix F

iel

d

G

t

ί

ξρ

or

r

e

p

ι

e-s

ύ

r!t

r

_st

ϊ

ve

in

your area

.

This

p

roce

d

u

re will

ass

u

re

you

t

h

e

fastest

possible

service

.

P

lease

include

the

instr

u

me

n

t

Ty

p

e

a

nd

-Serial--or-

M

o

d

el

N

u

m

ber

with

all

re

q

u

ests

for

p

arts

or

service

.

S

p

ecificatio

n

s

an

d

p

rice c

han

ge

p

ri

v

i-

leges

reserved

.

Co

p

yrig

h

t



°'



1969

by-

Te

k

tronix,



Inc

.,

β

eaverton,

Orego

n

.

P

rinte

d

in

t

he

U

nite

d

States

of

America

.

All

rig

h

ts

reserved

.

Contents

of

t

h

is

pu

blication

m

ay

not

be

reproduced

in

any

f

orm

,

v

it

h

out per

m

is-

sion of

the

copyright

owner

.

TA

BLE

O

F

CO

N

TEN

TS

S

E

CTIO

N

1

S

E

CTIO

N

2

Type

7Β

50

S

PE

CI

F

ICATIO

N

Page

I

n

troduction

1-1

E

lectrical

C

h

aracteristics

1-1

Swee

p

R

ate

1-1

Sweep

Accuracy

1-1

Sweep

L

engt

h

1-1

Swee

p

H

old-Off

Time

1-1

E

xternal

H

orizo

n

tal

Amplifier

1-1

Deflectio

n

F

actor

1-1

Frequency

R

espo

n

se

1-2

Trigger

Se

n

sitivity

1-2

Internal

Trigger

J

itter

1-2

E

xternal Trigger

Input

1-2

L

evel

R

a

n

ge

1-2

Brig

h

t

Baseli

n

e

1-2

Ρ

-

Ρ

Auto

Sensitivity

1-2

E

nviro

n

me

n

tal

C

h

aracteristics

1-2

Altitude

1-2

Tran

sportatio

n

1-2

Ph

ysical

C

h

aracteristics

1-2

Finis

h

1-2

W

eig

h

t

1-2

Dime

n

sio

n

s

1-2

O

PER

ATI

NG

I

N

ST

RU

CTIO

N

S

General

2-1

Installatio

n

2-1

Front

Panel

Co

n

tr

ols

and Connectors

2-1

Test

Setu

p

Ch

art

2-4

Ge

n

eral

Operating

Information

2-4

Swee

p

Cali

br

ation

C

h

ec

k

2-4

Simplified

Operati

ng

I

n

st

r

uctions

2-6

N

ormal

Sweep

2-6

M

agnified

Sweep

2-6

Delayed

Swee

p

2-6

Pus

h

button Switc

h L

ogic

2-6

Triggere

d L

ig

ht

2-6

Trigger

M

ode

2-7

Trigge

r

Cou

p

li

ng 2-8

Trigge

r

Source 2-9

T

r

igger

Slope 2-10

Trigger

L

evel

2-10

H

orizo

n

tal

Sweep

R

ate

2-10

Sweep

Magnifier

2-12

H

orizontal

Position

Cont

r

ol

2-12

Dis

p

lay

M

ode

2-12

Type

71350

TABLE

OF

CONTENTS



cont

SECTION

3

SECTION

4

Applications

2-13

Frequency

Comparison

2-13

Time

Duration

Measurements

2-14

Determining

Frequency

2-14

Risetime

Measurements

2-1

ς

Delayed

Sweep

Time

Measurements

2-16

Delayed

Sweep

Magnification

2-17

Pulsc

Jitter

Measurements

2-18

Χ

-

Υ

Phase

Measurements

2-19

CIRCUIT

DESCRIPTION

Introduction

3-1

Block

Diagram

Description

3-1

Detailed

Circuit

Description

3-3

Trigger

Preamp

and

Input

Switching

3-3

Trigger

Generator

3-3

Input

Stage

3-3

Ρ

-

Ρ

Auto

Stage

3-3

Slope

Comparator

3-3

Trigger

TO

Stage

3-6

Pulse

Amplifier

3-6

Sweep

Gate

Stage

3-7

Bright

Line

Auto

3-7

External

Amplifier

3-7

Sweep

Generator

3-g

Disconnect

Amplifier

3-10

Sawtooth

Generator

3-10

Sweep

Start

Amplifier

3-1

ρ

Sweep

Stop

Comparator

3-1

ρ

Holdoff

Capacitor

and

Amplifier

3-10

Sweep

Holdoff

Multivibrator

3-11

Reset

Control

Amplifier

3-11

Sweep

Reset

Multivibrator

3-11

Single

Sweep

Operation

3-11

Alternate

Operation

3-11

Delayed

Sweep

Operation

3-12

Horizontal

Preamp

3-12

Readout

Block

3-12

MAINTENANCE

Preventive

Maintenance

4-1

General

4-1

Cleaning

4-1

Transistor

Checks

4-1

Recalibration 4-1

Troubleshooting 4-2

Troubleshooting

Aids

4-2

Troubleshooting

Equipment

4-2

Troubleshooting

Techniques

4-2

Corrective

Maintenance

4-6

TA

BLE

O

F

CO

N

T

EN

TS



cont

A

bb

reviations

and

symbols

u

se

d

in

t

h

is

manual

a

r

e

base

don

or ta

k

en d

i

r

ectly

from

IEEE

Stan

d

a

r

d

260

"Sta

nd

a

r

d

Symbols

for

Un

its",

M

I

L

STD-12B

and

ot

h

er stan

d

ards of

the

electronics

industry

.

C

h

an

ge

i

n

formation,

if

any,

is

locate

d

at

th

e

rea

r

of

t

h

is

ma

nu

al

.

Type

7

Β

50

Obtaining

R

eplacement P

arts

4-6

Sol

d

ering

Tec

hn

i

q

ues 4-7

Com

p

on

en

t

R

ep

lacement

4-7

SECTIO

N

5

PERF

O

RM

A

N

C

E

C

HE

CK

/CA

L

I

BR

ATIO

N

5-1

Int

r

odu

ction

5-1

Test

Equ

ipment

R

equ

ire

d

5-1

Sh

ort

F

orm

P

rocedure

5-2

Performance

C

h

ec

k

/Calibration

P

rocedure

5-4

Ge

n

e

r

al

5-4

Pr

eliminary

Control

Setti

n

gs

5-4

Ch

eck

or

A

d

ju st

L

evel

Cente

r

5-4

Ρ

-

Ρ

A

u

to

L

evel

R

a

n

ge

5-5

Internal

Trigger

Centeri

n

g

5-5

L

evel/Slo

p

e

R

ange

5-6

Trigger

B

and

wi

d

th

5-6

E

xte

rn

al

Trigger

I

np

ut

Compe

n

sation

5-6

Swee

p

J

itter

5-7

T

r

igger

M

od

es

5-7

Sweep

Cali

b

ratio

n 5-8

M

ag

n

ifie

d

Swee

p

Gain 5-8

M

ag

n

ifier

R

egist

r

atio

n 5-9

Swee

p

L

en

gt

h 5-9

V

aria

b

le

Time/Div

R

a

n

ge

5-9

5μ

s

Timing

5-10

0

.2

μ

s

Timing 5-10

Sweep

Timing

Accuracy

5-10

M

agnifie

d

Swee

p Timi

n

g

5-11

Sweep

I

nh

ibit

5-11

Am

p

lifie

r

V

aria

b

le

R

ange 5-11

E

xternal

H

orizo

n

tal

Center

5-12

Am

p

lifie

r

Deflection

F

actor

5-12

Am

p

lifie

r

B

and

wi

d

th

5-12

SE

CTIO

N

6

ELE

CT

R

ICA

LP

AR

TS

L

IST

Abbreviations

an

d

Sym

b

ols

P

arts

Or

de

r

ing

Information

In

dex

of

E

lectrical

P

a

r

ts

L

ist

S

E

CTIO

N

7

DIAG

R

A

M

S

A

ND

ME

C

HAN

ICA

L P

A

R

TS

I

LLU

ST

R

ATIO

NS

Diag

r

ams

M

ec

h

a

n

ical

P

arts

Ill

u

strations

(on

r

everse

si

d

e

of

Diagrams)

SECTIO

N

8

ME

C

H

AN

ICA

L P

A

R

TS

L

IST

M

ec

h

a

n

ical

P

arts

L

ist

Information

In

dex

of

M

ec

h

anical

P

arts Illustratio

n

s

M

ec

h

anical

P

arts

L

ist

Accessories

Fig

.

1-1

.

Type7850Time

Base

.

GAWN-1

."

Introduction

The

Type

71350

Time

Base

unit

is

d

esigned

specifically

for

use

with

Tektronix

Type

7500-Series

Oscilloscopes

;

however,

it is

also

compatible

with

all

other

7000-Series

Oscilloscopes

.

The

Ty

p

e

71350

features

calibrated

sweep

rates

from

5 secon

d

s/

d

ivision

to

0

.05

microseconds/

d

ivision

(5

nanosecon

d

s/division

with

MAGNIFIER

at

Χ

10),

trigger-

ing

to

100

megahertz

or

vertical

amplifier

b

an

d

width,

whichever

is

less

and an

external

h

orizontal amplifier

.

Sweep

rates

may

be

varied

continuously

(uncalibrated)

be-

tween

calibrate

d

steps

.

The

sweep

free-runs

p

roviding

α

S

E

CTIO

N

l

S

PE

CI

F

ICA

ΤΙΟΝ

Ch

ange

information,

if

any,

affecting

t

h

is

section

will

be

fou

n

d

at

t

h

e

rea

r

of

t

h

e

ma

n

ual

.

TABLE

1-1

ELECTRICAL

C

HARACTERISTICS

Type

71350

b

right

base-line

in

the

absence

of

adeq

uate

triggering

signal

in

Ρ

-

Ρ

AUTO

an

d

AUTO

triggering

mo

d

es

.

The

Performance

Check

proce

d

ure

given

in

Section

5

provi

d

es

α

convenient

metho

d

of

checking

p

erformance

of

this

instrument

.

The

following

electrical

characteristics

apply

at

an

ambient

temperature

of

0

°

C

to

+50

°

C,

unless

otherwise

noted

.

W

armup

time

for

given

accuracy

is

20

minutes

.

Characteristic

P

erformance

Sweep

R

ate

Calibrated

R

ange 5

s/div

to

0

.05

μ

s/

d

iv,

steps

in

α

1-2-5

se

quence

.

Χ

10

magnifier

ex-

tends

swee

p

r

ate

to

5

ns/

d

iv

.

VARIABLE

Continuously

variable

b

etween

cali-

Range

brate

d

steps

.

Extend

s

sweep

rate

to

at

least

12

.5

s/div

.

Sweep

Accuracy

Measure

d

in

7500

series

mainframe

.

Calibrated

with

mainframe

calibra-

tor

.

Time

Interval

+15

°

C

to

+35

°

C

0

°

C

to

+50

°

C

Over

Center

Unmag

Mag

U

nmag

Μα

g

8

d

iv

5

s/

d

iv

to

0

.1

s/div

an

d

0

.2

μ

s/div

to

3%

3

.5%

4% 5%

0

.05

μ

s/div

50

ms/div

to

2%

2

.5%

3%

4%

0

.5

μ

s/

d

iv

Over

any 2 d

iv

interval

within

5% 7%

center

8

div

Characteristic

Performance

E

xclu

d

e

following

Start

of

Sweep

En

d

of

Swee

p

p

ortions

of

Magni-

first

50

ns

b

eyon

d

t

he

fle

d

Sweep

100th d

iv

Sweep

L

ength

10

d

ivisions

to

13

divisions

Swee

p Hold

-Off

Time

5

s/Div

to

1

.5

times

the

ΤΙΜΕ

/DIV

setting

or

5

μ

s/Div

less

.

2

μ

s/Div

to

3

.5

microseconds

or

less

.

0

.05

μ

s/Div

External

H

orizon-

tal

Amplifier

Deflection

Factor

ΕΧΤ

V

A

R

IA

BLE

90

millivolts/

d

ivision

wit

h

in

10

fully

cloc

k

-

millivolts/divisio

n

wise

ΕΧΤ

=

10

VARIABLE

900

millivolts/division

within

110

Fully

clock-

mill

ivolts/clivision

wise

VARIABLE

At

least

10

to

1

R

ange

Specificatio

n

-Ty

pe71350

'

Οη

i

n

te rn

al

triggeri

n g

only,

t

h

e

s

p

ecifie

d

-3

d

B

fr

e

qu

en

cy

of

t

he

vertical

system

re

p

laces

any

fr

e

qu

e

n

cies

i

n

t

heab

ove

ta

b

le

w

h

e n

t

he

nu

m

b

e

r

in

t

h

e

table

is

g

r

eate

r

t

han

t

h

e

vertical

am

p

lifie

r

up

pe

r

-3

dB p

oi

n

t

.

E

xternal

Trigge

r

In

pu

t

M

aximum

I

np

ut

V

oltage

In

pu

t

R

a

n

dC

L

evel

R

an

ge

(ex-

clu

d

i

n

g

Ρ

-

Ρ

AU

TO)

B

rig

h

t

B

ase-

L

ine

Ρ

-

Ρ

A

U

TO

O

p

e

r

a-

tion

Sen

sitivity

Altit

ude

Non-Operating

Tran

s

po

r

tatio

n

F

i

n

is

h

2

W

ill

n

ot

t

r

igge

r

on

si

n e

waves

of

3

d

ivisio

n

s

o

r

less

i

n

te

rn

al

o

r 1

.5

volts

exte

rn

al

b

elow

120

H

ertz

.



W

e

i

g

h

t

C

h

aracteristic

ΕΧΤ

ΕΧΤ

=

10

ENV

I

R

O

NMENTA

L

CHA

R

ACT

ER

ISTICS

C

h

aracte

r

istic

C

h

aracteristic

Dime

n

sions

500

V

(DC

+

P

ea

k

AC)

.

500

V

Ρ

-

Ρ

AC

at

1

k

ilo

h

e r

tz

or

less

1

mego

h

m

with

in

2%

ο

,

20 p

icofa

r a

d

s

wit

h

in

2

picofara

ds

At

least

+3

.5

volts

to

-3

.5

volts

At

least

+35

volts

to

-35

volts

Swee

p

free-ru

ns

in

ab

sence

of

trig-

gering

signal

i

n

A

U

TO

and Ρ

-

Ρ

A

U

TO

0

.5

d

iv

internal,

250

m

V

exte

rn

al

200

Hz

to

10

MH

z

.

1

.5

d

iv

internal,

750

m

V

external

10

MH

z

to

100

MH

z

TA

BLE

1-2

TA

BLE

1-3

P

erformance

P

erfo

r

mance

To

50,000

feet

an

d

-55

°

C

Q

u

alified

un

d

er

N

ational

Safe

T

r

an

-

sit

Committee

test

p

roce

du

re

1

Α

,

Category

Ι

Ι

PH

YSICA

L

CH

A

R

ACT

E

R

ISTICS

P

erfo

r

mance

F

ro

n

t

Pan

el

is

a

no

d

ize

d

aluminum

14

1/4

i

n

c

h

es

long

by 2 5/8

inc

h

es

wi

d

e

b

y 5

inc

h

es

h

ig

h

overall

A

b

o

u

t 1

3/4

p

ound

s

Ch

a

r

acteristic

P

erformance

N

ominal

F

re

quency

R

es

p

on

se

System

-3dB

p

oi

n

ts in

7500-series

oscillosco

p

es

L

ower

-3dB

U

pp

er

-3

dB

AC

16

H

z

500

kH

z

AC

LF

REJ

70

k

H

z

500

kH

z

AC

HF

REJ

16

H

z

100

kH

z

DC

DC

500

kH

z

Trigger

Sensitivity Triggeri

n

g

M

inimum

Trig-

F

requency

gering

Signal

Ran

ge'

R

e

q

uired

Cou

p

li

ng

ΙΝΤ

ΕΧΤ

AC

30

H

z

to

0

.3

Div

150

m

V

10

MHz

10

MH

z

to

1

.5

Div

750

m

V

100

MH

z

AC

LF

REJ

30kH

z

to

0

.3

Div

150

m

V

10

MH

z

150

kH

z

to

150

m

V

10

MHz

10

MH

z

to

1

.5

Div

750

m

V

100

MHz

AC

HF

REJ

Z

30 Hz

to

0

.3

Div

150

m

V

50

kH

z

DC DC

to

10

MHz

0

.3

Div

150

m

V

10

MH

z

to

1

.5

Div

750

m

V

100

MH

z

Si

n

gle

Sweep

Triggering re

qu

irements

same

as

no

r

mal

swee

p

.

Wh

en

triggere

d

,

swee

p

generato

r

p

ro

du

ces

o

n

e

swee

p

only

.

Internal

T

r

igger

1

nanosecon

d

or

less

at

75

mega-

J

itter

h

ertz

General

T

h

e

Type

71350

p

lug-in

unit

op

erates

with

α

Te

k

tronix

7000-series

indicator

oscillosco

p

e

and

α

7A-series

vertical

p

lug-in

unit to

form

α

co

mp

lete

oscillosco

pe

system

.

To

effectively

use

t

he

Ty

p

e

71350

its

op

eration

and

ca

p

abilities

s

h

ould

be

known

.

T

h

is

section

d

escri

b

es

the

o

p

eration

of

t

he

front-

p

anel

controls,

gives

first-time

an

d

general

o

p

er-

ating

information

an

d

lists

some

basic

a

pp

lications

for

th

is

instrument

.

Installation

T

he

Ty

pe

71350

is

d

esigne

d

to

o

p

erate

i

n

t

h

e

h

orizo

n

tal

p

lug-in

com

p

artments

of

Tek

tronix

7000-series

oscillo-

sco

p

es

.

T

h

e

Ty

p

e

71350

can

also

be

installe

d

in

α

vertical

p

lug-in

com

p

artment

to

provi

de

α

sweep

t

h

at

runs

vertically

on

t

he

CRT

.

However,

w

h

en

use

d

in

t

h

is

manner,

t

h

ere

is

no

retrace

bla

nk

ing

or

internal

triggering

p

rovision

an

d

t

he

unit

may

not

meet

t

he

s

p

ecifications

given

in

Section

1 .

T

he

instructions

in

t

h

is

manual

are

written

for

use

of

t

he

Ty

p

e

71350

in

α

h

orizontal

p

lug-in

com

p

artment

of

t

he

oscillosco

pe

.

Wh

en

t

he

Ty

pe

71350

is

use

d

with

an

oscillosco

p

e

w

h

ic

h

h

as

two

h

orizontal

p

lug-in

com

p

artments,

install

th

is

unit

in

T

he Β

(rig

h

t)com

partment

.

T

h

en,

if

α

d

elaying-swee

p

unit

is

installe

d

in

t

h

e

Α

(D

EL

AYI

NG

TIME

BAS

E

)

com

p

artment,

d

elaye

d

-swee

p

op

eration

is

available

.

T

h

e

Ty

p

e

71350

will

operate

p

r

op

erly

i

n

t

he

Α

com

p

artment

for

all

h

o

r

izontal

mo

d

es of

op

e

r

atio

nexce

p

td

elaying

sweep

.

To

install

t

h

e

Ty

p

e

71350

into

α

p

lug-in

com

p

artment,

p

us

h

it

in

until

it

fits

firmly

into

t

he

in

d

icator

p

lug-in

com-

p

artment

.

To

remove,

pull

the

release

latc

h

(see

F

ig

.

2-1)

to

d

isengage

t

he

unit

from

t

he

indicator

an

d

pull

it

out

of

t

he

p

lug-in

com

partment

.

Even th

oug

h

t

h

e

h

orizontal

gain of

t

he

in

d

icator

oscillosco

p

e

is

stan

d

ar

d

ize

d

to

minimize

ad

j

ustment

w

h

en

inserting

p

lug-in units,

t

h

e

sweep

calibra-

tion

of

t

h

e

Ty

p

e

71350

s

h

oul

d

be

ch

ec

k

e

d

w

hen

it is

inserte

d

into

t

h

e

in

d

icator

to

verify

measurement

accuracy

.

T

h

e

p

rocedure

for

ch

ec

k

ing

t

he

u

nit

is

given

und

er

Swee

p

Cali

b

ration

C

h

ec

k

in

t

h

is

section

.

FR

O

N

T-

P

A

NEL

CO

NTR

O

LS

AND

CO

NNE

CTO

RS

General

S

E

CTIO

N

2

O

PER

ATI

N

G

I

N

ST

RU

CTIO

N

S

Ch

ange

information,

if

any,

affecti

n

g

t

h

is

sectio

n

will

be

fou

nd

at

t

h

e rear

of

t

h

e

manual

.

All

controls

re

q

uire

d

for

the o

p

eration

of

t

h

e

Ty

p

e

71350

are

locate

d

on

t

he

front

p

anel of

t

he

unit

(see

F

ig

.

2-2)

.

To

ma

k

e

full

use

of

the

ca

p

abilities

of

t

h

is

instrument,

t

h

e

Fig

.

2-1

.

L

ocatio

n

of

release

latc

h

.

Triggering

Controls

Type

71350

ope

r

ator

s

h

oul

d

be

familiar

wit

h

t

h

e

functio

n

an

d

use

of

eac

h

of

t

h

ese

controls

.

Α

brief

d

escri

p

tion

of

t

h

e

front-

p

anel

con

trols

an

d

connector

is

give

n h

ere

.

M

ore

d

etaile

d

information

is

given

un

d

er

General

O

p

erati

ng

Information

.

LEVEL

/S

L

O

PE



Selects

t

h

e

am

p

litu

dep

oint

and

slo

p

e

of

trigger

signal

on

w

h

ic

h

t

h

e

sweep

is

triggere

d

.

Wh

en

t

h

e

in

d

ica

tor

line

on

t

he

outer

ring

is

to

t

h

e

left

of

center,

t

he sweep

is

triggered

on

t

he

p

ositive-going

slo

p

e

of

t

he

trigger

signal,

as

sh

own

by

t

he

p

ositive-going

waveform

.

To

t

he

rig

h

t

of

center,

t

he

swee

p

is

trig-

gere

d

on

t

he

negative-going

slo

p

e

of

t

h

e

trigge

r

signal as

s

h

own

b

y

t

he

negative-going

waveform

.

TR

IG'D



L

ig

h

t

in

d

icates

t

h

at

t

h

e

swee

p

is

triggere

d

an

d

will

p

ro

du

ce

α

d

is

p

lay

with

correct

setting

of

t

he

POSI

TION

control

and

t

he

controls

on

the

associate

d

vertical

unit

and

in

d

i-

cator

oscilloscope

.

Operati

ng

Instructio

n

s-Type

71350

MOD

E

2-2

Series

of

push

-button

switc

h

es to

select

t

he

trigger

mo

d

e

.

Selected

mo

d

e

is

in

d

icate

d

by

lig

h

te

d

but-

ton

.

Ρ

-

Ρ

A

U

TO

:

Swee

p

automatically

triggere

d

at

p

oint

selecte

d by

t

he

LEVEL/SLOPE

control

w

h

en

the

trigger

signal re

p

etition rate

is

above

about

200

h

ertz

an

d

wit

h

in

t

h

e

fre

q

uency

range

selecte

d

by

t

he

CO

UPL

I

NG

F

ig

.

2-2

.

F

ro

n

t-

P

anel

cont

r

ols

a n

d

co

nn

ector

.

switc

h

.

Triggere

d

swee

p

can

be

obtaine

d

t

h

roug

hout

t

he

entire

range

of th

e

LEVEL

/S

L

O

PE

control

.

Wh

en

the

trigger

re

p

eti-

tion

rate

is

below

t

he

lower

fre-

q

uency

limit

(or

above upp

er

limit

for

AC

HF

REJ)

or

w

hen

t

he

trigger

signal

is

ina

d

eq

uate,

t

he sweep

free

runs

at

t

h

e

swee

p

rate selecte

d

by

t

he

ΤΙΜΕ

/DI

V

switc

h

to

pro

d

uce α

reference

trace

.