Sennheiser SKM 3072-U-x User Manual download pdf (Page 10)

22 Safety instructions

 Never open electronic devices! This must only be done by

authorised personnel and is all the more important for current-

carrying units.

 As far as possible, use your SKM 3072-U in dry rooms only. When

you are using the SKM 3072-U outside, it must be protected against

direct moisture. In outdoor applications, always use a windshield.

 Use a damp cloth for cleaning your SKM 3072-U. Do not use any

solvents.

23 Technical Data / Dimensions

RF output power typ. 30 mW

Transmission frequencies 1- 32

Frequency range 470 - 960 MHz

Frequency preparation PLL synthesizer

Max. switching bandwidth 32 MHz

Frequency deviation ≤ 10 kHz

Spurious emission ≤ 4 nW

Modulation/pre-emphasis wideband FM/50 µs

Nominal/peak deviation (1kHz) ± 40 kHz/± 56 kHz

Noise reduction system HiDyn

plus

™

AF frequency response 80 - 18,000 Hz

Signal-to-noise ratio 110 dB(A)

THD (1 kHz/nom. dev.) ≤ 0.3 %

Sensitivity adjustable in 4 steps of 10 dB

Max. sound pressure level 154 dB SPL (ME 3005 E)

Power supply 9 V alkaline, IEC 6 LR 61

(or rechargeable accupack)

Power consumption

at nominal voltage approx. 50 mA

Operating time

with alkaline battery approx. 8 h

with rechargeable battery approx. 2 h

Dimensions in mm 255 x 50

Weight incl. battery approx. 350 g

Supply schedule SKM 3072-U 1 SKM 3072-U hand-held

transmitter with ME 3005 e

mic head

1 9 V PP3 battery

1 MZQ stand adaptor

8 colour-coded protection caps

1 storage case

1 operating instructions

Supply schedule SKM 3072-U-x 1 SKM 3072-U hand-held

transmitter with ME 3005

mic head

1 9 V PP3 battery

1 MZQ stand adaptor

8 colour-coded protection caps

1 storage case

1 operating instructions

21 Error checklist

 Transmitter does not work:

Battery is flat, replace the battery! ( chapter 8), battery is not

inserted or inserted the wrong way round. Transmitter is defective

(=> send transmitter to a Sennheiser service department!).

 No transmission:

Receiver or transmitter are not switched on or transmission

frequency does not agree with receiving frequency.

 Short hissing noise or short interruption:

Position of receiving antennæ is unfavourable. Make sure that there

is a “free line of sight” between the transmitter and the antennæ.

 Microphone gain too low / microphone overmodulated :

Sensitivity adjusted too low / too high

(=> adjust sensitivity!  chapter 15).

 After switch-on, the display first indicates “3072-U“ and then

“LoBAt”,the transmitter switches off:

Remaining battery capacity is not sufficient for operation

(=> replace battery!  chapter 8).

 Transmitter switches off during operation:

After “LoBAt” – alternating with the display for frequency/channel

number – has been shown for a certain amount of time, the battery

has become completely flat, the transmitter has switched off

(=> replace battery!  chapter 8).

 Transmitter cannot be switched off:

“Lock mode” function is activated. “Loc” is briefly indicated on

the display (=> deactivate “lock mode“ function!  chapter 18).

 Transmitter cannot be switched to “CHxxx”:

No channel number is entered, “CH---” is briefly indicated,

transmitter switches back to frequency display (=> enter a channel

number!  chapter 17).

 Strong twittering:

Two transmitters operate on the same frequency, the preselected

frequency is subject to interference (=> change the transmission

and receiving frequency!  chapter 16).

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Sennheiser SKM 3072-U-x User Manual Page 10

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