Tektronix DC 509 Manual de usuario

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erate

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it

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f

Ο

WA-

TIME

,

α-- "

Τγ

1

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Α

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t

V

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TS

Θ

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εχτ

DC

509

Un

iversal

Coun

te

r

/Time

r

;

Ε

S

ΕΣ

ϋR

ΕΜ

W

-1Z

ΤΟΡ

1

ΠΑ

R

Τ

iXT

INPUTS

i

ΛΑ 52 -^

.

:-

2ΕφF

~`

Υρχ

=-

;

ΜΟΥι

,~

ι

ι

S

PE

CI

F

ICATIO

N

I

nstrument

Descri

p

tion



Stan

d

ar

d

Accessories

M

easurement

results

are displaye

d

in

an

eight-digit

LED

readout, with

t

he

decimal

p

oint

automatically p

ositioned

.

The

displayed

count

overflow

is

indicated

byα

flashing

dis-

play

.

The

counter

also

uses

three

digits of

the

seven-seg-

ment

LED

display

to

indicate

internal

or operating

error

codes

and

two

digits

for

external

signal

p

robe

compensation

results

.

The

DC

509

can

b

e

equipped

with

an

optional,

oven

con-

trolle

d

,

10

MHz

crystal

oscillator

to obtain αh

ighly

stable

and

precise

internal

time

base

.

Instrument

Options

Section

1-DC

509

The

DC

509

is

α

o

ne-wide,

universal

counter/timer

p

lug-



1

Instruction

Manual

in

.

It

features

reciprocal

frequency, p

erio

d

,

events

Βd

uring

Α

a

nd

Totalize

measurements

to

135

MHz,

time

interval

and



1

Cable

assembly,

bnc-to-tip

j

ack

widths

features

10

n

s

single-shot

resolution,

for

timing

mea-

surements

.

For

repetitive

timing

measurements,

averaging

and

pseudo-random

time

base

modulation

circuitry

p

rovi

des



.

increased

accuracy

over

α

wide

range

of

in

p

ut

signals

.

NOTE

R

efer

to

t

he

tabbed

Accessories

p

age

at the rear

of

The

DC

509

provides

trigger

level

outputs

at

b

oth t

he



t

his

manual

for

more

information

.

front

p

anel

and

rear

interface for

increased

measurement

convenience

.

Shaped

outputs

and

an

arming

input

are

indi-

vidually

available

at

either

the

front

panel

or

the rear

inter

face

.

B

oth

C

hannel

Α

and

Channel

Β

may

also be

sourced



P

erformance

Con

d

itions

from

either

the

front

p

anel

or the

rear

interface

using

the

front

panel

switch

.

The

limits

state

d

in

the

P

erformanceRequirements

col-

umns

of

the

following

tables

are

valid

only

if

the

DC

509

has

b

een

calibrated

at

an

ambient

temperature

b

etween

+20°C

and

+30°C

and

is

operating

at

an

ambient

temperature

b

e-

tween

0°C

and

+50°C,

u

nless

otherwise

stated

.

Information given

in

the

Supp

lemental

Information

and

Descrip

tion

columns

of

the

following

tables

is

provided

for

user

information

only

and

should

not b

e

interpreted

as P

er-

formance

Check

re

q

uirements

.

The

DC

509

must

be

operated

or

stored

in

an

environ-

mentwhose

limits

are

described

u

nder

E

nvironmental

Characteristics

.

Option

01

replaces

the

internal

10

MHz

time b

ase

(clock)



Allow

at

least

20

minutes

warm-up

time

for

operation

to

circuit

with α

self-contained

prop

ortional

tem

p

erature con-



specified

accuracy,

60

minutes

after

storage

in

α

h

igh

hu-

trolled

oven

oscillator

for

increased

accuracy

and

stability

.



midity

environment

.

S

p

ecification-DC

509

In

p

ut

F

re

q

uency

R

ange

F

ront

Pa

n

el(

E

xt)

DC

Coupled

Χ

1

Χ

5

C

h

aracter

i

st

i

cs



P

e

rf

o

r

m

a

n

ce

R

e

qu

i r

e

m

en

ts



S

u

pp

lemental

I

n

fo

r

mation

AC

Cou

p

led

R

ear

I

n

terface

(Int)

DC

Cou

p

led

AC

Cou

p

led

In

pu

t

Sensitivity

Χ

1

Attenuation

DC

Cou

p

led

AC

Coupled

Χ

5

Attenuation

Accuracy

(AC

or

DC

Co

u

pled)

M

i

n

im

u

m

Input

P

ulse

W

i

d

t

h

In

p

ut

Dynamic

R

ange

Trigger

L

evels

Manual

R

ange

A

U

TO

TR

IG

R

ange

Accuracy

Auto-Trigger

Sensitivity

Table

1-1

ELE

CT

R

ICA

L

C

H

A

R

ACT

ER

ISTICS

C

HA

NNEL

Α

an

dCH

A

NNEL

Β

I

NPU

TS

>

Ο

Hz

to

%f

F

UN

CTIO

N

_-10

Hz

to

%f

F

UN

CTIO

N

>

0

Hz

to

-_50

MHz

.

_-10

Hz

to

-_50

MHz

.

_-20

m

V

rms

(56

.6

m

V

ρ

-

p)

from

>

0

H

z

to

,100

MH

z

.



R

ms

val

u

es

for

Sine

W

aves

f

r

om

25

Ω

source

_-40

m

V

rms

(113

m

Vρ

-

p)

from

100

MH

z

to

-_

f

FUNCTION

_-20

m

V

rms

(56

.6

m

V

ρ

-

p)

from _-10

H

z

to

-_100

MH

z

.

_-40

m

V

rms

(113

m

V

ρ

-

p)

from

100

MH

z

to

f

fun

ctio

n

3ns@115m

V

ρ

-

ρ

.

±

3

.2

V

.

+3

.200

to

-3

.175

V

wit

h 25

m

V

resolutio

n

.

See

Fu

nctio

ns

Specifications

Typically

_-5%

ρ

-

ρ

ab

errations

.

_-2%

at

DC

-3

.2

_-

V

.

--+3

.2

m

Vin

.



ρ

-

ρ



_-3

V

.



(

F

or



Input



Signal

risetimes

_-5

ns)

V

in

ρ

-

ρ

_-15V

.

(

F

or

I

np

ut

Signal

risetimes

_5

ns)

±15

m

V

±40

Ει

V

/°C



reference

d

to

25°C

.

(Typical)

,125

m

Vρ

-

ρ

times

attenuator

.

_-20

H

z

to

-_100

MHz

.



Duty

cycle

in

d

e

p

endent

.

Trigger

poi

n

t

is

set

once

(eac

h

time

t

he

button

is

de-

p

ressed)

to

α

nominal

50%

of

t

he

ρ

-

ρ

i

np

ut

signal

.

F

or

signals

from

DC

to

20

H

z

t

he

level

will

still

be

set

between

0%

an

d

100%

b

ut

will

not

necessarily

be

t

h

e

50%

p

oint

.

M

aximum

In

p

ut

V

oltage

Front

Panel

Χ

1

Input

Imp

edance

Front

Panel

Χ

1,

Χ

5

Slope

Trigger

L

evel

Output

Accuracy

Χ5

R

ear

Interface

Χ

1,

Χ

5

R

ear

Interface

Χ

1,

Χ

5

Characteristics

Table

1-1

(cont)

Performance

R

equirements

CHANNEL

Α

and

Β

I

NPUTS

(cont)

W

ithin

±10

mV

of

internal

DC

trigger

level

voltage

.

(Actual

triggering

voltage

is

subject

to

changes

in

input signal-to-noise

r

atio

and

risetime

.)

See

resolution

and

accuracy

statements

.

1

Μ

4

±2%,

_-30

p

F

5012

±

10%

@

dc

.

Independently

selectable

.

(+)

for

counting

p

ositive

pulses

.

(-)

for

counting

negative

p

ulses

.

ARMING

INPUT,

SHAPED

OUTPUTS

Supplemental

Information

V

pk

Χ

200

V



400,

DC

to

50

kHz

V

P-

ρ

P-P



20/f

MHz,

50

kHz

to

1

.33

MHz

.

V

P-P

_-15,

1

.33

MHz

to

150

MHz

.

V

pk

_-200

V



<400

DC

to

5

MHz

.

P-P

V



Χ

2000/f

MHz,

5

MHz

to

80

MHz

.

V

P-P

P-P

Χ

25,

80

MHz

to

150

MHz

.

V

pk

,

3

.6

V

.

(-13

V

_-V

.

_-+

13

V,

Χ

1)

(-65

_-V

.

in

+65

V,

Χ

5)

Arming

Input



Arming

is

not

recommended

for

Chan-

nel

Α

frequencies

,70

MHz

.

Pulse

R

es

p

onse



Ρω

_-100

ns

(V

H

--2

.4,

V

L

--0

.4)



Armed



when



Vin



,2

.4

.



Disarmed

when

V

.

_-0

.4

V

.

Maximum

Safe

In

p

ut

V

oltage



V

pk

_-10

V

.



Ι

.

n

low

;

3

.2

mA

(2

standard

TTL

loads)

Shaped Out

p

uts

Delay

from

front

p

anel



13 ns

typically

Am

p

litude



0

to

-_+0

.3

V

from

50112

ground

referenced

source

.

R

isetime



1



1

3

ns

into

50

<

.2

(ty

p

ical)

Specification-DC

509