BRUEL & KJAER 4409 Guide de l'utilisateur

Response Test Unit Type 4409

Test Records Types

2007-08-09

The

test

unit

and

ecordings

have

been

designed

aid

the

accurate

investigat

ons

the

frequency

sponse

sound

reproducing

equipment

i.e.

record

~Iayersl

tape

& film

recorders

etc.

BRUEL

KJ.N..H

N",rum,

Denmark.

I!E

800500

.;:>"

BRUKJA, Cop

enhagen.

Telex: 5316

440Q

Response

Test

Unit

Type 4409

Test Records

Types

2007

-~09

FEBRUARY

1964

Contents

1. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Purpose

the

Equ

ipm

ent

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

Description

the

Test

Records

...

.....

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

.........

General.

. . . . . . .

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

Recording Characteristics

...........

...

......

. .

. . .

.....

Recorded

Level

Tolerances

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

.....

.........

Response

Test

Unit

Type

4409

......

....

......

....

Channel Selector

.......

...........

....

.......

....

......

.......

. . 14

Equalizing Filter

........

....

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

...........

Synchro

-Starter

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

.........

...

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

General Description

......

....

. .

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

.......

Functioning .

......

...

. . .

.....

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

2. Operation

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

......

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

...

.........

Practical

Hints

for

Use

the

Test-Records

.....

. .

...

......

...

Aut

omatic

Frequency

Response

Plotting

...

.....

......

. .

....

Automatic

Gliding

Frequency

Cross-Ta

Measurements

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

General .

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

Operating Procedure

........

...

. .

....

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

...

Synchronous

Filtering

Adjustment

...

. .

........

....

. 22

Automatic

Distortion

Measurements

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

........

Examples

Practical Results

.....

...

....

......

.. ..

. . .

... ...

....

Use

e Te

Record

QR 2008 .

.....

....

.....

....

.........

Spot

Frequencies ...

....

.....

.........

..........

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

1 Kc/s Reference

Tones

....

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

100

C/S

Tracking

Test

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

.....

.. ..

.....

......

....

Tone

Arm

Resonance

.....

...

......

....

...

... ...

.....

Test

Tape

Recorders

etc.

....

...

.........

....

........

.. ..

Synchro-Start

Continuous

Recording

...

........

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

Specifications .

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

....

......

.....

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

...........

DESCRIPTION

1. Description

Purpose of the Equipment.

e Response Test U

nit

Type 4409 is

int

ended for use

with

the B & K a

c fre

res

pon

se plotting e

quipm

en investigating

e fre

ency

espo

nse of so

d re

cing e

quipm

ent.

1 shows an example in

whi

ch the

09 a

a test record are

vol

e testing of a stereo

onic

record

player.

vel recor

1.1. Meas

uring

t-up

for a

om a

c plo

ttin

e frequen

espo

nse

of a stereopilOnic reco

play

er.

The 4409 fulfils

thr

ee differe

fun

ns:

(a) cha

el sel

e case of stereo

onic equipme

either

man

ually,

one

cha

el is inves

gat

omatically

recur

ing

quen

2 cis for a

omatic cross-ta

or co

arison meas

eme

(b) e

qnali

zation, by differe

RC filters,

e recording

cha

acter

istic of the

test

reco

rd.

(c)

sync

onization

e pape

r-driv

e of

e Level Recorder

Type

05 with

e reference r

ord

ings (reco

tap

und

er re

ion.

thu

s possible to a

omatically

e frequency response

the sound

produ

cing

uipm

ent. A typical expe

rim

al result is shown in Fi

1.2.

DESCRI

ION

ere

recorder

int

egrated

with

e re

produc

er, as

case

tap

reco

motion

pictur

systems

etc., refere

e reco

rdin

gs are taken

from

e consta

voltage

output

generator,

but

the

cas

phonogr

testing,

accurate

refere

disc

ordin

are

eded.

The

Gliding

Frequency

Reco

rdin

Type

2007 a

2009

are

especially

designed

for

purpo

y res

pons

e investiga

tion

They

provide

OOODOODaOODDOOOODOOO

OOO

OOODODOO

aOOOQOO

OOOOoooooooo

"':!!'.'

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

......,.....

.....

1(1

:IS

........

StereophoniC

piCk.

type

«I

Ortof

SPII.G

No 1

Fil

ter

l in"

2007

Mod1

----

~~-

LUoo.r.,

,...

lOdS

::..s,.,~

~f_s..

...

OIO

1123

1.2.

Typical

perimental result obtained

means

le se

t-up

Fig.

1.1.

(Test

of a

high

qllality stereophonic head

esenting a certain unbalance).

The total duration

one plot is 35 sec. between

instant

the

pick-up

is put d

n on

e record QR 2007

and

e ins

tant

e set-up is r

to start a new plot.

ntinuou

frequency

sweeps

cis to

with

late

ral

mod

the QR 2007

and

left, rig

, late

ral

, ve

rtical

modul

ations on

2009.

The

Pickup

Test

Reco

Typ

2008 i

her ha

, designed

for

meas

eme

fixed frequencies

and

for

ton

e a

res

ance

investigation

It is

int

for

pick-Up design

work

and

also

for

general

purpo

se chec

com

bin

with

the gliding

ncy

reco

rds

en c

plotting

quipm

not

ava

ilable.

Description

the

Tcst

Records.

General.

The

B & K

referenc

e recordings are delivered

box

containing

five ide

ntical

vinylite reco

rds

and

one

instruction

manu

al (Fig. 1.3).

Both

sides

eac

record

being

tical, a

total

ten sides

are

ava

ilabl

a large enough

ntit

y to g

uar

ee a great

numb

ings

without

1. DESCRIPTION

alteration

the

characteristics.

This

number,

however, is

greatly

dependent

care

exercised in

e use

the

records.

conserving

one

side as a

reference, it is possible to

check

e service

lif

each

record

use.

Fig. 1.3. Gliding

Frequency

Recordings

Type

QR 2007.

The

cutting

process and

dimensions

are in

accordance

with

the

Recor.:-

ndation

Int

erna

tional

Electrotechnical

Commission (

lEC

98/98-1)

recogniz

most

countries.

The

detailed

specifications

are

given

the

end

this

manual.

The

reproduction

e label

the

QR 2007 (Fig. 1.4)

and

the

photograpb

section

record,

illuminat

a grazing

light

beam

(Fig. 1.5),

how

exact

composition

the

recordings

The

2008 a

2009

are

desc

rib

ed in

the

same

way

figures 1.6

through

1.9.

The

original

sinusoidal

signal

used

for

recording

disc

tracks

was

obtained

from

a B & K B

eat

Frequency

Oscillator

with

especially

low

distortion.

For

the

ecor

din

e gliding

frequency

bands

the

frequ

ncy

the

signal

was

vari

according

to a

fun

ction

time

which

was

purely

logarithmic

within±

2.2 %

± 1.3 cis.

This

tolerance

is e

qual

tolerance

the

termination

the

recorded

frequency

when

using

the

Gliding

Frequ

ncy

Records

e exact specified

rot

tion

speed

(45

rpm

)

and

assuming

logarithmic

sweep.

DESCRIPTION

All rights res

erv8a

Briiel & Kjan

Copenhage

n Denmark

Monophonic

Gliding

Frequency

Record

20-20000

cIs

Type

2007

r.p.m.

Frequency Sweeps: logarithmic

cIs to

kc/s in

seco

nds

Start Marking

(20

cIs point): Cease of

the

1 kc/s

gnal preceeding each ba

Recording Characteristic:

e Standard

No.3

without treble emphasis

(constant velocity above 1 kcfs) .

Recorded Velocity at 1

/s: 3.16

em!s

m.s.

Bands

10:

lateral cut

/63695

1.4.

bel of

e QR 2007.

2007

Bands 1 to

: A B

cis

8/9 octave per

5. Section of tile QR 2

7 sh

ing tile succession of

glidin

g fre

ency

eceded

a 1

kc/s

sta

reference signal.

igh

reserved

Briiel & Kjmr

Copenhagen

Denmark

Pick-up

Test

Record

Section

r~~i~~

1~:

,~~~~j~~

~s~Oc

~~s~

i~2:i5

~ ~~d

ul~t

Sand

° l

eft

modulation (A). Sand 2:

° right modulation (B).

Section

2 0

Section

Reference Tones, 1 kcls, 4 x 60

sec

. ' Lateral Tracking Test,

Velocity level : 2.24 cm/

sec.

(45

100

cIs

(A+

B), 5 x 15

sec

cmls lateral or vertical)

Sand

1: 0.

peak

amplitude

::~~

:~~

ff~t

(

~~)

::~~

: "

Sand 3:

atera~

(A+B)

Sand

0.004

Sand

4: vertical

(A-B)

SlInd 5: 0.005

Sect

ion 4

Vertical Tracking

Test

section

3 but

vertical

(A-

B) modulation.

Section

Logarithmic Frequency

Sweep

s 10 cIs -100 cIs

161

sec

Start

Marking (10 cIs point):

cessation

of the 1 kcls

sig

nal

ecorded

lever~~~~~~~t

~~~

i~~d~·0.OO

113

peak.

Sand

1: 45° left

(A)

Sand 3: lateral

(A+

Sand

2: 45° right (B)

Sand

vertical

Sect

ion 6

ction

but

wit

sma

groove

spe

~.cord

",.~\

(63696

tJd on

ORTO

FON

e.o.U

Fig. 1.

Label 0/

e QR

5sot

freguencies

-16-12.5-10

kc/s

.6 cm/sec rms)

·1kc/s reference

tone

(3.16

cm/secl

(compliance) A+B

Tracking test 1

100

CIS

bands

increasing amp!. A

001

0.005

10-100

cIS

SWl!ePS

} A

constant amplitud B

(0.00113

peak)

A+B

for tone arm

A-8

reSonance

first

section

}

2008

(33h

rpm)

+61~2

DESCRIPTION

Fig. 1.7. Section 0/

e QR 2008 sh

ing

the

succession 0/ bands.

DESCRIPTION

~::-

I Briiel &

Kjcer

Copenhagen Denmark

Stereophonic

Gliding

Frequency

Record

20-20000

cis

Type

2009

r.p.m.

,6.

Frequency Sweeps: Logarithmic

cIs to

c/s

secon

Start Marking

(20

cIs

Cease

the 1 kc/s

signal

preceeding each band

Recording Characteristic:

IEC

Standard N

o.3

without

treble

emphasis

(constant

vel

ocity

above 1 kc/s)

Recorded

Velocily.t

1 kc

/s:

2.24 em!s

.s. in

° modulation

(3.16

/s in lateral and

vertica

l m

odulat

ions)

Bands 1 and 5:

° left m

odulatio

(A)

Bands 2 and

° right modulation (9 )

Bands 3 and 7: lateral modulation

(A+

Bands 4 and

vertica

l modulation

- B)

Fig.

Label

e QR 2009.

-V-

AtS

A+S

A-S

Fig. 1.9. Section

the

QR 2009

showing

the

succession

gliding frequen

bands preceded

a 1

kc/s

start and reference signal.

1. DESCRIPTION

Recording Characteristics.

Pick-ups

should

be tested

with

reference

the

internationally

recognized

characteristics

are

int

ded

give co

nstant

output

function

frequ

ency. Gliding

frequency

records

hould

general

cut

according

the

recording

character

istics

shown

Fig.

1.10-bottom

the

case

the

B & K Gliding

Frequency

Records

, a

charact

ristic

shown

top

Fig. 1.10,

which

converted

qualizing

filter

measuring

chain

appropriate

characteristics

has

been

adopted.

The

reaso

for

the

high

fre-

quency

level

limitation

the

record

that

tru

reproduction

intended,

radius

curvature

the

modulated

groove

wall

must

main

apprec

bly

larger

than

stylus

tip

radius

The

wave-length

ing

termined

the

chosen

groove

speed,

and

stylus

tip

radius

being

norm

alized

15-

for

stereophonic

pick-ups

this

sets a

IIII

I I I I II

HttIT

/ Recording Characteristic

".....

Gliding Frequency Records

ClR

2007 &

ClR

2009

IIII

I I I I II

IIII

: -20

f.- 50

100

200

500

1000

2000

10000 20000

r--

Type

1,409

Equilizing Filters Characteristics /

db IN

Filter

Switch pas: I.E

.C.

Curve 2, "

":I.E.C

. Curve 3

I I

r>-

Filter StitCh

pas.:

Lin.

.1:-::=':'

0 II

III

I I

100

200 500

1000

2000 10000 20000

+:::

:1:111

=::1

:::::=::

::=::

TotaL

Characteristics I

(TfiS

f~12001/19+4t09I

H++t

+-+-f-

H+Ht

,,"-llri

+10

H--f-jf++

++-

+-+++++++--++-++

w!+.l1If-H

lter Switch pas. :

lin

f----

H+H+++-++-~

~\++~~~~--++~~_+H

_10f----

H +

H+

tl-+9-V

-t-+

-tFilter

SwitchP05

I.E.G.

curve~

II "I I " :

1.~

-20

t==T-+-t-ttttl

I--t--t--++-t-t+lttt-III

-++-+-++

H+

1tt--H

III

I I

IIII

100

200 500 1000 2000 10000 20000

{.6

Z32~

Fig. 1.10. Recording characteristics available

when

using

the

Gliding Frequency

Recordings

connection

with

the

Response

Test

Unit

Type

4409.

The

curve

no. 3 is specified

the

International Electrotechnical

Commission

in its

publication

no.

98-1 for steI'Cophonic recordings.

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