Sennheiser SK 1012-6-7-9-90 Puttingintoservice, HiDyn+ limiter, The, L, :, tion, 'OI""'N, Application Operatingmode, HiDyn, "Test, Useonly, tion"ON, HiDynoff, HiDynoff, diagramOC

Puttingintoservice

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Insertingthe batteries

Installthe batteriesasshownin FiguresA andB.

Importantnote:Useonly alkaline-man- ganesecellsl

The maximumoperatingperiodwill dependon the transmittermodel:

SK1012-6:	approx.32 hours
SK1012-7/SK1012-9
SK1012-90:	approx. 8 hours

Usingrechargeablebatteriesis advanta- geouswherethe devicewill be in regular

operation.Thebatteriesneednot be re- movedfrom the deviceif the SZL1010

chargingunitis used.Theconnectionbet- weenthe chargingunit andthe batteryis madevia chargingcontact7. The maxi- mumoperatingperiodon a singlecharge will dependon thetransmitter model beingused:

SK	1012 -6:	approx.5.5 hours
SK	1012-7 /SK	1012-9
SK1012-90:		approx.1.5hours

Connectingmicrophones

A varietyof microphonescan be connected at the 8-prongmicrophonesocket5; the choiceof microphonewill dependon

the applicationin whichthe transmitteris used.

Werecommendthefollowingmicropho- neswhenusingthe SK1012as a hand- held,lavalieror stand-mountedmicro- phone

MKE 2012(omnidirectional), MKE4012(cardioid) pockettransmitter

MKE2 R(omnidirectional),MKE10, MKE10 R(omnidirectional), MKE40 R(cardioid)

The microphonemodelscited aboveare electretmicrophoneswhichdrawtheir voltage supplyfrom the transmitter.

Dynamicmicrophonescanalsobe con- nected:TheDA1012and DA1012U con-

nectorcablesrequiredfor this purpose are availableas accesoryitems.

Socketwiring ~'OI""'N

diagramOC

, -, - -- _:6 .

L, :

Importantnote:Contacts6 and7 areto bejumpedwhenoperatingwithoutremote control;otherwisethe transmittercannot be put into service.Sennheisermicro- phonessuitedfor connectionto this transmitterandthe DA1O12andDA1012U connectorcablesalreadycontainthese jumpers.

Setting the operating mode

Switch6 is usedto set the transmitterfor oneof threeoperatingmodes:

HiDyn

Operationwith compandersystem.AGC amplifierdefeated.

HiDyn+ limiter

Operationwith compandersystem.AGC amplifieractivated.

HiDynoff

Compandersystemdefeated.AGCampli- fier activated.

Whichoperatingmodeis rightfor the application?

Application Operatingmode

Pockettransmitter HiDyn Hand-held,lavalieror standmicrophone HiDynorHiDyn+

limiter, if

extremefluctua- tions in the acoustic

pressurelevelare anticipated.

TheHiDynoff setting is to be selected onlywhenusingreceiverswhichare not fitted with a compandersystem.

Switchingon the transmitter / Adjusting the modulation

Switchingon the transmitter Putswitch1 in its "Test" position;the greenLED3 must light.If it doesnot,the batteryis installedincorrectlyor is dis- charged.Thisbatterytest isto be made

everytimethe transmitteris put intoser- vice.

Afterthe batterytest put switch1 in posi-

tion"ON".

Settingthe modulation

Putswitch1 in its "Test"setting.Attach or holdthe microphonein the positionin whichit wililater be usedand makea speakingtest.A long"E" pronouncedcon- tinuouslyis suitableas a test tone.Turn control4 untilthe red LED2 lightsonly

brieflyduringvolume peaks.If the receiver isfitted with a deviationindicator,ad-

just the sensitivityso that a deviationof 30% is readduringvolumepeaks.

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