Kenwood FL-180A Manuel utilisateur

PRINTED

JAPAN

B50-7693-00

96009(N)

KENWOOD

WOW

FLUTTER

METER

FL-180A

INSTRUCTION

MANUAL

KENWOODCORPORATION

WOW

FLUTTER

METER

FL-180A

The

FL-180A

wow

flutter

metermeasureswowand

flutter

ofvarioustypesofsound

recordingmachines,videorecordingmachinesandmanyotherrotarymachinessuch

taperecorders,

VTR's

andturntablesinaccordance

with

theJIS

(Japan),

NAB

(U.S.A),

CCIR

(France)

andDIN(Germany)standards.

Before

using,pleasereadthisinstructionmanualcarefullytoinsurethemaximum

performanceandtrouble-freeoperationofyour

FL-180

CONTENTS

FEATURES

••••3

SPECIFICATIONS

• 4

PANEL

CONTROLS

AND

THEIR

FUNCTIONS

Front

panel• 6

Rear

panel••••••• ••••••9

PRECAUTIONS

• • ..10

OPERATIONS

• 11

Preparation

foroperation••••11

Operatingprocedures• • 11

Operationofwow

flutter

meter• 11

Output

terminalon

Rear

Panel

• 12

Operationoffrequencycounter• 13

MAINTENANCE

• • • 14

FEATURES

•Minimumoperating

input

voltageisaslowsas0.5mV,permitingmeasurements

ofwowand

flutter

directly

from

a small

output

tapeheadorPHONOcartridge.

•The

FL-180

A hasa widerangeofmeasurementrange(0.003to10%)andis

ready

foruse

with

professionaltyperecordersandotherrotarymachines.

•RMSvalues

(JIS),

meanvalues(NAB)andpeakvalues

(CCIR/DIN)

canbe

directlyreadaccordingtointernationalstandards.

•Combinationofwowand

flutter,

weightedorunweighted,canbemeasuredon

the

basis

ofDINstandards.Itisalsopossibletomeasurewowand

flutter

separately.

•Highstabilitycrystaloscillatorsareincorporatedtoprovide3 kHzand3.15kHz

recordingsignalsource.

•

Besides

measuringwowand

flutter,

the

FL-180

A alsoindicatesthefrequency

ona

4-digit

frequencycounter.

The

frequencycounterreferencetimecanbeusedforcrystalcontroland

selectionofACpowerfrequency(50/60Hz).

•The

FL-180

A canbeswitchedtooperateasa frequencycounter.

•Flickeringofthe

monitor

lampallowswowand

flutter

measurement

without

adjustingthe

input

levelandfrequency.Ifthe

FL-180

A isusedasa frequency

counter,the

monitor

lampflickerswhen

input

frequencyexceeds9.999kHz

(gatetime: 1 sec),indicatingoverflowofthefrequency.

input

frequencyexceeds55kHz(gatetime: 0.1

sec.),

the

monitor

lamp

goes

out,indicatingthatthefrequencyisoutofthemeasurementrange.

•ACandDCvoltage

output

terminalsareprovidedforconnectinga frequency

analyzer

suchasoscilloscope,penrecorder,

digital

memoryscopeorFFT

analyzer

toobservewaveformsandanalyzefrequencies.ACvoltageis

proportional

towow

flutter

andDCvoltage

proportional

towow

flutter

andthe

speed

ofrevolution.

SPECIFICATIONS

Wow

flutter

metersection

Measuringcenterfrequency:

Within

3 kHz± 300

Hz(JIS,

NAB,

CCIR)

Within

3.15kHz+300Hz(DIN)

nput

level: 0.5mV—100mV,5 mV—30V,tworanges

Input

impedance:

300

kO+ 20%,unbalanced

Wow

flutter

measurement

range:

0.003-10%

(5mV~30Vrange)

U 1 O I

IMUO

0.01-10%

(0.5mV~100mVrange)

Display

system:

RMS

value(JIS)

Meanvalue(NAB)

Peak

value

(CCIR,

DIN)

Display

accuracy:

±5%

full

scale

(at4 Hz)

Frequency

response:

Weightedcharacteristic: Inaccordance

with

JIS,NAB,

CCIR/DIN

(at

0.2-200Hz)

Wowcharacteristic: 0.5-6Hz(-3dB±1dB)

(JIS/NAB)

0.3~6Hz(-3dB±1 dB)

(CCIR/DIN)

Fluttercharacteristic: 6-200Hz(-3dB±1dB)

Unweightedcharacteristic: 0.5-200Hz(-3dB+ 1dB)

(JIS/NAB)

0.3-200Hz(-3dB+1dB)

(CCIR/DIN)

Roll

off:

Less

than0.5Hz; morethan-6dB/oct

(JIS/NAB)

than200Hz; morethan-15dB/oct

(JIS/NAB)

Less

than0.3Hz; morethan-6dB/oct

(CCIR/DIN)

than200Hz; morethan-15dB/oct

(CCIR/DIN)

Maximum

input

voltage:

100V

(DC+ACpeak)

nput

monitor

Level

monitor

lampONatmorethan0.5mV/5mV

input

Frequency

countersection

Measuringfrequencyrange: 0.01-55.00kHz(gate

time

: 0.1s)

0.010—9.999kHz(gate

time

: 1s)

nput

level: lOOmVrms— 30Vrms

nput

impedance:

300kO

+ 20%(unbalanced)

Countingcapacity: Decimalsystem,

4-digit

LEDmemorydisplay

Reference

time

Reference

time

frequency:

10.080

MHz

(built-in

crystal)

powerfrequency(AClinepower)

Reference

time

frequency

accuracy

5x10~5(0—40°C)

(built-in

crystal)

Refer

toACpowersupplyaccuracy.(AClinepower)

Gate

time

s,0.1s

Circuitandratingaresubjecttochange

without

noticedueto

developmentsintechnology.

Measurementaccuracy: ±(1

digit

+ reference

time

accuracy)

Maximum

input

voltage:

100V

(DC+ ACpeak)

nput

monitor

Level

monitor

lampgoesonat100mV

input

ormore.

(Flickers

input

frequencyexceeds"9.999kHz"

with

the

GATE

TIME

button

released.Turnsoffif

input

frequencyexceeds55.00kHzbeyondthemeasurement

range

with

the

GATE

TlME

button

depressed.)

Outputterminals

Recording

output

signal

Signal

frequency:

kHz,3.15kHz

Accuracy

5X105

Output

voltage: 0.2Vrms+20%(open

output)

Output

impedance:

600

0+20%

(unbalanced)

Distortionfactor:

Less

than1 %

(6Q0O

terminated)

Drift

output

terminal

(DRIFT)

Output

voltage: Approx.DC+ 1 V,foreach+

% offrequency

drift

Output

impedance:

600X1+

20%(unbalanced)

Scope

output

terminal(TO

SCOPE)

Output

voltage: Approx.3Vrmsof

full

seale

Output

impedance:

600

0 +

20%

(unbalanced)

Recorder

output

terminal

(RECORDER)

Output

voltage: Approx.DC1 V of

full

scale

Output

impedance:

6000+

20%(unbalanced)

Power

requirements

Voltage:

100/120/220+ 10%,216V-250V,50/60Hz

Power

consumption: Approx.14W

Operatingtemperature

0-40TC

Dimensions

Width

260mm

(

) dimentionsinclude Height150mm(171)

protrusion

from

basic Depth305mm(360)

outline

dimentions.

Weight Approx.5.2kg

Accessories

Connectingcord

with

plugsandclips

(CA-36)

1 piece

cord••••••1 piece

Instructionmanual1 copy

Replacement

fuse

(0.5

A)••••••••••2 pieces

(0.3

A)••••2 pieces

PANEL

CONTROLSANDTHEIRFUNCTIONS

Fig.

1 Frontpanel

FrontPanel

(DPOWER

Power

switch.

Press

( j») the

pushbutton

switchandthe

4-digit

frequency

displayLED® indicates"0000"(noinput).The

FL-180

A isreadyfor

operation.

©OSC(JIS,NAB,CCIR/DIN)

Recordingsignalselectswitch.

Press

( m. ) the

pushbutton

switchand3.15kHz

signal(DIN)isavailableattheOSC

OUTPUT

(3).Byreleasing(JL)theswitch,

3.0kHz(JIS,NAB,

CCIR)

signalis

obtained

attheOSC

OUTPUT

(3).

Note

Whenmeasuringwowand

flutter

ofeachstandard,thisswitchshouldsetto

theappropriatestandard.

(3)

OSCOUTPUT

Recordingsignal

output

terminal.A sinewavesignalofthefrequencyselected

bytherecordingsignalselectswitch(2)is

outputted.

The

output

voltageis200

mVrms,

output

impedanceis600ohmand

distortion

factoris1 %. Selectthe

desiredstandardwhenmeasuringwowand

flutter

ofa taperecorder,etc.

®INDICATION(JIS)

Standardselectswtichformeasuringwowand

flutter.

Press

the

pushbutton

switchandthemeter@

will

indicateRMSvalueofJISstandard.

®INDICATION(NAB)

Press

thepushbuttonswitchandthemeter@ willindicatea meanvalueof

NAB

standard.

®INDICATION(CCIR)

Press

thepushbuttonswitchandthemeter@ willindicatea peakvalueof

CCIR

standard.

(7)

INDICATION(DIN)

Press

thepushbuttonswitchandthemeter® willindicatea peakvalueof

DINstandard.

®FUNCTION(WTD)

This

switchisusedtoselectthefrequencycomponentcontainedinwowand

flutter

tobemeasured.Bypressingthepushbuttonswitch,weightedwowand

flutter

ofeachstandardaremeasured.

(9)FUNCTION(WOW)

pressingthepushbuttonswitch,wow

with

frequencycomponentof0.5~6Hz

(0.3-6

Hz)(-3dB)canbemeasured.[ ( ) for

CCIR/DIN

]

©FUNCTION

(FLUTTER)

pressingthepushbuttonswitch,

flutter

with

frequencycomponentof6~200

(~3dB)canbemeasured.

®FUNCTION(UNWTD)

pressingthepushbuttonswitch,wowand

flutter

on0.5~200Hz(0.3~200Hz)

bandcanbemeasured.[ ( ) for

CCIR/DIN

]

©INPUT

Inputterminalformeasuringwow

flutter

andfrequency.

The

input

impedanceis300kO,andthemaximum

input

voltageis100V(DC+

peak).

LEVEL

nput

sensitivityselectswitchformeasuringwowand

flutter.

Press

(JB.)the

pushbuttonswitchandwow

flutter

canbemeasured

with

morethan5mV

input

voltage.

Release

( JL)theswitchtomeasurewowand

flutter

with

morethan

0.5

input.

©MODE

This

switchisusedtoselectthemodeofmeasurement; wow

flutter

frequency.

Press

thepushbuttonswitchandthe

FL-180

A functionsasa frequencycounter

covering10— 9999Hz.

Release

theswitchtomeasurewowand

flutter.

®RANGE

This

switchisusedtoselectthewow

flutter

measurementrange.Itselectsa

maximumof6 ranges,0.03%,0.1%,0.3%,1%,3%,and10%

full

seale.

GATE

TIME

This

pushbutton

isusedtoselectthegatetime.

Press

this

pushbutton

(button

engaged)tosetthegate

time

to0.1secondand

themeasurementrangeto00.01to55.00kHz.

Press

itagain

(button

released)tosetthegate

time

to1 secondandthe

measurementrangeto0.010to9.999kHz.

OVERFLOW/LEVEL

MONITOR

Duringmeasurementofwow

flutter,

the

monitor

lampwiII

light

whenan

input

signalofspecifiedlevel(selectedby

LEVEL

©)andfrequency(3kHz,3.15kHz)

±300Hzispresent.

Duringmeasurementoffrequency,thislamp

will

also

light

whena signalof

specified

input

level(morethan100mV)ispresent.

The

lampflickerswhen

input

frequency

exceeds

9.999kHz

with

the

GATE

TlME

button

released(gate

time

: 1 second),indicatingoverflowofthefrequency.

Itgoesoutwhen

input

frequency

exceeds

55.00kHz

with

the

GATE

TlME

button

depressed(gate

time

: 0.1second),indicating

that

thefrequencyisout

ofthemeasurementrange.

Note

The

lampflickersmomentarilyatthe

time

ofpowerON.

This

isnormaland

notanindicationoftrouble.

FREQUENCY

The

4-digit

redLEDindicatesthefrequency

during

wow

flutter

orfrequency

measurement.

®CarryingGrip

Use

this

grip

whencarryingthe

FL-180

Meter

This

meterindicateswow

flutter

fordirectreading.Itprovidestwo

full

scale

readingsof"10"and"3"whichcorrespondtoeach

position

ofthe

RANGE

switch© .

Ifthemeterisnotzeroedmechanically,adjustit

with

a standardscrewdriver.

@>Stand

This

standcanbelockedby

pulling

inthe"arrow"direction(seeFig.2).

Fig.

2 Useofauxiliary

foot

Stand

Rear

Panel

Fig.

Rear

panel

CordReel

This

cordreelisusedtostorethepowercordforcarryingconvenience.

Fuse

Holder

0.3A fuseisusedforoperatingthe

FL-180

A on220V or240V ACpower.

For

operationon100Vor120V,itshouldbereplacedwitha 0.5A

fuse.

Note:

Never

usea fusewithdifferentcurrentrating.

®PowerConnector

powerconnector.UsethesuppliedACcord.

®PowerSelectorSwitch

Set

thisswitchtothecorrectpowervoltage.

GNDTerminal

Groundterminal.

Note:

Before

using,the

FL-180

A mustbeproperlyearthed.Improperearthingcan

result

inelectrical

shocks.

SCOPE

voltageproportionaltowow

flutter

isavailableatthisterminal.The

output

voltageisabout3V

full

scale

andthe

output

impedanceisabout

600X1.

Used

forobservingwaveformsoranalyzingfrequencies.

DRIFT

Drift

output

terminal.Thefrequency

drift

isaboutDC+

V for+1%andthe

output

impedanceisabout

600X1.

. The

output

voltageisproportionaltothe

speed

ofrevolutionofequipmentundertest.

RECORDER

This

terminalprovidesDCvoltageproportionaltometerreadingduring

measurement

ofwow

flutter.

The

output

voltageisabout

full

scale

andthe

output

impedanceis6000.

REFERENCE

FREQUENCY

This

switchisusedtosetthefrequencycounterreferencetimeforcrystal

controlorACpowersynchronization.

Hz— For50Hz

areas

Hz—For60Hz

areas

CRYSTAL

— Crystalcontrol

®VoltageNameplate

Use

specifiedpowervoltageand

fuse.

PRECAUTIONS

Donotexposethe

FL-180A

todirectsunlight.Notethat

excessive

temperature

rise

resultsinunstableperformanceordamagestransistorsandIC's.

Avoidusingthe

FL-180

A inlocationswithhightemperatureandhumidity.

Usethe

FL-180

A invibration-freelocations.Vibrationcan

cause

misoperation.

ACpowerfluctuationshouldbewithin± 10%oftheratedvoltage(MAX.

250V).

Power

frequencyis50/60Hz.

BeforethepoweristurnedON,checkthemechanicaIzero

point

ofthemeter.

The

FL-180

A shouldbeusedundertemperaturesof0 to40

"C.

Inmeasuringwow

flutter,

confirmtheapplicablestandardandcondition.

Themaximuminputvoltageis100V(DC+ AC

peak).

Donotapplya volya

voltagein

excess

ofthis

limit.

Neverconnectexternalvoltagetothe

output

terminals.

Topreventelectrical

shocks,

therearpanel)toanappropriateearth

point.

10.

Whenmeasuringwow

fitter,

the

FL-180

A mustbep laceduprightly; otherwise,

accurate

measurementscannotbeobtained.

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