Sennheiser SK 1012-6-7-9-90 Troubleshooting checklist, Technical data, -30%, +55°C, -10°C and+ 55°Candfor, Speciticdatator SK1012-9, Detect, Specitic, Possiblecauses, Speciticdata tor SK

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Troubleshooting checklist

Detect	Possiblecauses
Nofunction,	1. Batterydischarged
LED3 doesnot light	2. Batteryreversed
	3. Microphonenot connected
Nofunction,	Insufficientbatteryvoltage
LED3 lightsfaintly
Acousticfeedback	"HiDyn"at the receiverswitchedoff or the receiverbeing
	usedis not equippedwith a compandersystem.
Limiteddynamics	Operatingmodeswitch6 inthe "HiDynoff" setting
NotransmissionalthoughtheTransmitterfrequencydoesnot matchthe receiver
transmitteris switchedon	frequency
Distortion	1. Inputsensitivityset too high
	(see"Adjustingthe modulation")
	2. Microphonedefective

THDat nominalswingand1000Hz . . . .

Audiofrequencyresponse. . .

Attenuationabovethe upper

limitingfrequency ..
Currentconsumption
Powersupply ...	..........
Operatingtime in dependencefrom
batterytype used	. . . . . . . . . . . .

Dimensionsincludingmicrophone. . Weightwith batteryandmicrophone

Extentof delivery.	. . . . . . . . . . .
Speciticdata tor SK 1012-7
RF-outputpowerinto dummyload1
radiatedpower. . ..	.....
Currentconsumption.	...	.

~1%

40 Hzto 12 kHz+ 1dB1- 3 dB)

>18 dBI oe!. (activelow- passfilter) approx.15mA

9 V batteryIEC6 F22

NiCd-accuapprox.5.5h, e.g.VartaTr 7/8; alkali-manganeseapprox.32 h,

e.g. MalloryMN1604 150x 46 x 24 mm

approx.226 g 1transmitter,1SZU1008neckstrap

100mW/approx.lOmW approx.40 mA

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Technical data

Carrierfrequency. . . . . . . . . . . . . . . .

SK 1012-6

1frequencybetween32 and45 MHz

Operatingtime in dependencefrom batterytype used

NiCd-accuapprox.1.5h, e.g.VartaTr 7/8; alkali-manganeseapprox.8 h,

e.g. MalloryMN1604

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Frequencydrift for temperaturesbetween -10°Cand+ 55°C andfor

supplyvoltagevariationsfrom
+1O%and-30%	. .

RF-outputpowerinto dummyload1

radiatedpower. . . . . . . . .

Powerof radiatedharmonics andspurious. . . . . . . . .

Modulation1 preemphasis Nominalswing. . . . .. . ..

Peakswingin modeof operation HiDyn . . . . . . . . . . . .

HiDyn+ Limiter. . . . .

HiDynoff . . . .. ........

S/N ratioat inputsensitivity10 mV andHiDyn(peakswing)

betterthan:!: 2.5 kHz

10 mW1~ 1mW

~4nW

FM1 50 fls :!: 8 kHz

:!: 10 kHz

:!: 8 kHz

:!: 8 kHz

> 89 dB,typ. 92 dB (DIN45500,

curveA, rms)

Speciticdatator SK1012-9

Carrierfrequency. . . . . . . . . . .

Frequencydrift for temperaturesbetween

-10°Cand+ 55°Candfor

supplyvoltagevariationsfrom +10% and -30% . . .. .."

RF-outputpowerinto dummyload1

radiatedpower. . . . . . . . . . . . . .

Powerof radiatedharmonics

andspurious. . . . .' .......

Currentconsumption. .. ..' . Operatingtime in dependencefrom batterytype used

1frequencybetween138and 220 MHz

betterthan:!: 3.5 kHz

50 mW1approx.30 mW

~50 nW approx.40 mA

NiCd-accuapprox.1.5h, e.g.VartaTr 7/8; alkali-manganeseapprox.8 h,

e.g. MalloryMN1604

AF-inputsensitivityfor nominalswing. .

Inputimpedance . . . . . . .
Rangeof sensitivitycontrol
atl mVsensitivity	....

Overloadrangeof limitingamplifier .

> 76 dB,typ. 79 dB (CCIR468, peak)

adjustable,max.1 mV,min.200 mV

approx.40 kQ

46 dB (typ.)

30dBat max.sensitivity

6dB at min.sensitivity

Speciticdata tor SK 1012-90		1frequencybetween138and220 MHz
Carrierfrequency. ..	. .. .
Frequencydrift for temperaturesbetween
-lOGeand+55°C andfor
supplyvoltagevariationsfrom		betterthan :!: 3.5 kHz
+ 10%and -30% . .

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