Sennheiser Musical Instrument SKM 3072 U x SKM 3072 U User Manual

INSTRUCTIONS FOR USE  
SKM 3072-U  
SKM 3072-U-x  
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INSERTING THE BATTERY  
DISPLAY  
SWITCHING ON/OFF THE SKM 3072-U  
REMOVING THE PROTECTION / IDENTIFICATION CAP  
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Operating controls  
SET button  
̃ button  
̅ button  
POWER button  
In the standard display (after switch-on),  
the display provides information on  
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battery status  
SELECTING THE DISPLAY MODE  
“TRANSMISSION FREQUENCY“ OR “CHANNEL“  
transmission frequency or channel number  
In the setting mode,  
the display provides information on  
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sensitvity of the microphone input  
“lock mode” function  
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ADJUSTING THE SENSITIVITY  
SELECTING A TRANSMISSION FREQUENCY/CHANNEL  
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Noise reduction with HiDyn plus™  
Progress you can hear:  
This transmitter is equipped with HiDyn plus, the Sennheiser noise  
reduction system that reduces RF interference. It increases the signal-to-  
noise ratio in wireless audio transmission to up to 110 dB. The 96 dB  
dynamic range of a CD is thus considerably surpassed.  
HiDyn plusis a wideband compander system which compresses the AF  
level on the transmitter side in a ratio of 2:1 (related to dB), and expands  
it in exactly the same way on the receiver side. The optimisation of the  
dynamic range and the supporting effect of the control amplifier in the  
transmitter effectively reduce modulation problems.  
ASSIGNING A CHANNEL NUMBER  
HiDyn plushas been specially developed for use in high quality  
radiomicrophone systems.  
Note:  
Only receivers which are also equipped with  
HiDyn pluscan work correctly in combination  
with the SKM 3072-U hand-held transmitter. If  
this is not the case, the dynamic range is  
drastically reduced and the transmission sounds  
high and shrill. HiDyn pluscannot be switched  
off on the SKM 3072-U hand-held transmitter.  
ACTIVATING THE LOCK MODEFUNCTION  
DEACTIVATING THE LOCK MODEFUNCTION  
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7
Changing the microphone head  
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Putting the transmitter into operation  
The SKM 3072-U’s interchangeable microphone head ensures suitability  
for various applications. Two different microphone heads are available:  
Switching on the SKM 3072-U  
Switch the SKM 3072-U on by briefly pressing the POWER button.  
The microprocessor performs a self test which can be followed  
on the display.  
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ME 3005 e:  
ME 3005 :  
condenser microphone head with  
super-cardioid pick-up pattern  
(included in the supply schedule)  
suitable for vocals / “close-miking”  
After about 2 seconds, the PLL has locked and the SKM 3072-U  
hand-held transmitter is ready for operation on the preselected  
frequency.  
condenser microphone head with  
super-cardioid pick-up pattern suitable  
for speech applications and greater  
talking distances  
The display now indicates the preset frequency or channel  
number (u chapter 13). The available battery status is also  
indicated (u chapter 10).  
To change the microphone head, unscrew the existing microphone head  
and remove it, then put the new microphone head on the SKM 3072-U  
and screw it tight.  
Switching off the SKM 3072-U  
Switch the SKM 3072-U off by pressing the POWER button for  
more than a second.  
OFF” briefly appears on the display and then the display goes off.  
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Inserting the battery / rechargeable accupack  
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To insert the battery, unscrew the microphone head and remove  
it. The battery compartment is underneath the microphone head.  
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Unlock and open the lid of the battery compartment.  
Insert the 9 V PP3 battery (IEC 6 LR 61) with the contacts  
pointing downwards. Observe the correct polarity when inserting  
the battery! In case you insert the battery the wrong way round,  
it will not connect so that the transmitter will not be damaged.  
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Close the lid of the battery compartment and lock it.  
Put the microphone head on the SKM 3072-U and screw it tight.  
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Battery operation  
Accupack operation  
12 Unlocking and removing the protection/  
identification cap  
10 Display of battery /  
rechargeable accupack status  
Press the corrugated area below the microphone body to unlock the  
protection/identification cap and push the cap backwards until you meet  
resistance. The operating controls are now accessible.  
The display indicates the (remaining) capacity of the battery / rechargeable  
accupack in use. The display differs for battery or accupack operation.  
Battery operation:  
The protection cap can be exchanged. To do so, push the cap further  
backwards over the resistance. If several SKM 3072-U hand-held  
transmitters are used simultaneously, the protection cap – which is supplied  
in various colours – also serves as an identification mark.  
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If all eight LCD segments are showing, the full battery capacity is  
available.  
If four LCD segments are showing, about half of the battery  
capacity is still available.  
If the battery is going flat, only the last LCD segment is showing  
and the “LoBAt” warning flashes in alternation with the display of  
the transmission frequency / channel number. You should replace  
the battery within the next ten minutes.  
13 Display of transmission frequency or  
channel number  
After you have switched on your SKM 3072-U, the microprocessor  
performs a self test which can be followed on the display. After about two  
seconds, the PLL has locked on the preselected transmission frequency  
and the standard display – the preselected transmission frequency or the  
channel number – is shown.  
Accupack operation  
(display only if the Sennheiser BA 1032 accupack is used):  
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If only the LCD segment on the right is showing, the accupack  
can be used.  
With the ̃/̅ buttons you can now choose the content of the display i.e.  
whether the transmission frequency or the channel number is displayed.  
Your selection is stored and remains stored even if the transmitter is  
switched off and on again.  
If the accupack is going flat, only the last LCD segment on the  
left is showing and the “LoBAt” warning flashes in alternation  
with the display of the transmission frequency / channel number.  
You should replace the accupack within the next ten minutes.  
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Intermediate capacities are not displayed. When a new accupack  
is inserted the right-hand LCD segment will indicate full capacity.  
As the accupack discharges this segment will remain on showing  
that the accupack is usable, when the accupack approaches full  
discharge the display will switch to showing the left-hand LCD  
segment as a warning (as described above).  
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̅ button: The display of the transmission frequency is quite  
important for the technician as he can check in which channel  
grid the transmission is taking place, if the channels are interfering  
with each other and so on.  
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̃ button: The channel number – which is the same for both  
transmitter and receiver – is easier to monitor for the user on  
stage.  
Accupacks from other manufacturers cannot be “identified” by the  
electronics and their capacity is therefore not displayed correctly.  
11 Sennheiser transmitters report their  
battery status to the receiver  
Together with the RF signal, the SKM 3072-U transmits inaudible  
information on its remaining battery or accupack capacity to the receiver.  
This information can be evaluated with the Sennheiser EM 3031/EM  
3032/EM 3532 or EM 1046 receivers.  
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With only three buttons, you can adjust any function  
on the receiver on the transmitter  
14 Basic functions of the  
Sennheiser operating menu  
15 Adjusting the sensitivity  
When briefly pressing the SET button, the display indicates the preselected  
sensitivity. The possible settings for the ME 3005 e microphone head are  
the following:  
A special feature of the Sennheiser 3000 series is the similar operation of  
transmitters and receivers. In stressfull situations, for example on stage  
or during a live show or presentation, it is important that the transmitter  
is easy to operate and that adjustments to the transmitter settings can be  
made quickly and “without looking. Therefore, the necessary operating  
steps for each device must be similar.  
0 dB  
for singers with soft voices  
- 10 dB  
for singers with normal voices using  
the microphone at a greater talking distance  
for singers with loud voices  
- 20 dB  
- 30 dB  
for rock singers / “close-miking”  
Press the SET button to get into the setting mode.  
The possible settings for the ME 3005 microphone head are the following:  
By briefly pressing the SET button, the display begins to flash and  
you enter the top menu level. By briefly pressing SET again, the  
display switches to the next menu and so on.  
0 dB  
for speakers with soft voices  
- 10 dB  
for speakers with normal voices using  
the microphone at a greater talking distance  
for speakers with loud voices  
- 20 dB  
- 30 dB  
for “close-miking” (e.g. presentations)  
Press the ̃/̅ buttons to adjust the settings of the selected menu.  
With the ̃/̅ buttons you can now select a different sensitivity. If you  
do not press the ̃/̅ buttons or the SET button for more than 14 seconds,  
the setting mode is automatically left and the microprocessor switches  
back to the standard display.  
Depending on the menu selected, you can adjust the following  
settings by pressing the t/s buttons:  
on the receiver  
on the transmitter  
receiving frequency  
receiving channel  
sensitivity of the microphone input  
transmission  
frequencytransmission channel  
“lock mode” function  
Note:  
In order that you can instantly test the new sensitivity, the  
setting becomes effective immediately without having to  
be stored.  
Press the SET button to store the setting.  
Settings which are “relevant to the transmission reliability” or  
have an impact on the complete radiomicrophone system have to  
be stored before they become effective. To store a setting, press  
the SET button for more than a second. “Sto” briefly appears on  
the display, indicating that your setting has been stored. The  
display then switches back to the standard display.  
Tip:  
Try out each sensitivity several times. For soundchecks please  
bear in mind that the volume may appear to be higher during  
rehearsal in an empty room than later during the show. Experience  
also shows that the user will normally speak louder in front of the  
audience.  
If you do not press the ̃/̅ buttons or the SET button for more  
than 14 seconds, the setting mode is automatically left and the  
microprocessor switches back to the standard display.  
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17 Entering and assigning a channel number  
16 Selection of possible transmission frequencies  
You can assign channel numbers to the pre-programmed frequencies (u  
chapter 16). These channel numbers (from 001 to 255) can be entered  
directly on the SKM 3072-U hand-held transmitter.  
Your SKM 3072-U hand-held transmitter can be operated on one of up  
to 32 different frequencies. These frequencies and their sequence are pre-  
programmed by the factory and must only be changed by your Sennheiser  
distributor who has the required specialist equipment.  
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Press the SET button to get into the setting mode.  
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Press the SET button to get into the setting mode. If you press SET  
again, the display indicates the transmission frequency in  
alternation with the channel number.  
If you press SET twice, either “CH---” or the channel number  
which has been assigned to the currently selected transmission  
frequency begins to flash on the display.  
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With the ̃/̅ buttons you can now change the transmission  
frequency.  
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With the ̃/̅ buttons you can now select the desired channel  
number. Holding down a button initiates fast search, continually  
cycling from the beginning.  
If the transmission frequencies have been assigned channel  
numbers, the channel numbers are indicated in alternation with  
the transmission frequencies. If no channel numbers are assigned,  
CH---” appears on the display. => Entering and assigning a  
channel number (u chapter 17)  
Press the SET button for more than a second to store your setting.  
Set” briefly appears on the display, indicating that the new setting  
has been stored. The display then switches back to the standard  
display.  
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Press the SET button for more than a second to store your setting.  
Sto” briefly appears on the display, indicating that the new setting  
has been stored. The display then switches back to the standard  
display.  
Note:  
If you do not press any of the three programming buttons for  
more than 14 seconds, the transmitter returns to the frequency to  
which it was last set and the display switches back to the standard  
display. The channel number which was last selected is also kept.  
Note:  
Only after your setting has been stored – i.e after you have pressed  
the SET button for more than a second – does the PLL switch to  
the new transmission frequency, the display then ceases to flash.  
You can discontinue your preselection by briefly (!) pressing the  
SET button.  
If you do not press any of the three programming buttons for  
more than 14 seconds, the transmitter returns to the frequency to  
which it was last set and the display switches back to the standard  
display.  
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18 Locking the POWER button /  
19 Suitable Sennheiser receivers  
Lock modefunction  
Your SKM 3072-U hand-held transmitter optimally matches any of the  
Sennheiser 3000 series receivers.  
You can lock the POWER button of your SKM 3072-U to prevent accitental  
switching off by a user inexperienced in handling the transmitter.  
EM 3031  
EM 3032  
EM 3532  
Cat. no. 04000  
Locking the POWER button  
Cat. no. 04200  
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Press the SET button to get into the setting mode.  
Cat. no. 04400 (not pictured)  
If you press SET three times, “Loc” begins to flash on the display.  
The SKM 3072-U can also be used with any receiver of the 1000 and  
5000 series, receivers of the 1000 series, however, cannot receive the battery  
status information.  
Press the SET button for more than a second to store your setting.  
Sto” briefly appears on the display, indicating that the new setting  
has been stored. The display then switches back to the standard  
display.  
The frequencies of your SKM 3072-U are pre-programmed by the factory.  
In case you want to change these frequencies, please contact your  
Sennheiser distributor who has the required specialist equipment.  
The POWER button is now locked. If POWER is accidentally  
pressed, the display briefly indicates “Loc” and then switches back  
to the standard display. With the ̃/̅ buttons, however, you can  
still choose the content of the display i.e. whether the transmission  
frequency or the channel number is displayed.  
20 Recommended accessories  
ME 3005 microphone head, for presentations Cat. no. 04573  
Unlocking the POWER button  
MZW 4032 A windshield, anthracite  
Cat. no. 02978  
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When briefly pressing SET, “Loc” begins to flash on the display.  
Now press the SET button for more than a second.  
MZW 4032 windshield with  
colour-coded identification rings, various colours  
The display switches back to the standard display and the buttons  
can now be operated as usual.  
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21 Error checklist  
22 Safety instructions  
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Transmitter does not work:  
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Never open electronic devices! This must only be done by  
authorised personnel and is all the more important for current-  
carrying units.  
Battery is flat, replace the battery! (u chapter 8), battery is not  
inserted or inserted the wrong way round. Transmitter is defective  
(=> send transmitter to a Sennheiser service department!).  
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.  
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No transmission:  
Use a damp cloth for cleaning your SKM 3072-U. Do not use any  
solvents.  
Receiver or transmitter are not switched on or transmission  
frequency does not agree with receiving frequency.  
Short hissing noise or short interruption:  
23 Technical Data / Dimensions  
RF output power  
Transmission frequencies  
Frequency range  
Frequency preparation  
Max. switching bandwidth  
Frequency deviation  
Spurious emission  
Modulation/pre-emphasis  
Nominal/peak deviation (1kHz)  
Noise reduction system  
AF frequency response  
Signal-to-noise ratio  
THD (1 kHz/nom. dev.)  
Sensitivity  
Position of receiving antennæ is unfavourable. Make sure that there  
is a “free line of sight” between the transmitter and the antennæ.  
typ. 30 mW  
1- 32  
470 - 960 MHz  
PLL synthesizer  
32 MHz  
10 kHz  
4 nW  
wideband FM/50 µs  
40 kHz/ 56 kHz  
HiDyn plus™  
80 - 18,000 Hz  
110 dB(A)  
0.3 %  
adjustable in 4 steps of 10 dB  
154 dB SPL (ME 3005 E)  
9 V alkaline, IEC 6 LR 61  
(or rechargeable accupack)  
Microphone gain too low / microphone overmodulated :  
Sensitivity adjusted too low / too high  
(=> adjust sensitivity! u chapter 15).  
After switch-on, the display first indicates 3072-Uand then  
LoBAt,the transmitter switches off:  
Remaining battery capacity is not sufficient for operation  
(=> replace battery! u chapter 8).  
Max. sound pressure level  
Power supply  
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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! u chapter 8).  
Power consumption  
at nominal voltage  
Operating time  
with alkaline battery  
with rechargeable battery  
Dimensions in mm  
Weight incl. battery  
approx. 50 mA  
approx. 8 h  
approx. 2 h  
255 x 50  
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Transmitter cannot be switched off:  
approx. 350 g  
“Lock mode” function is activated. “Loc” is briefly indicated on  
the display (=> deactivate “lock mode“ function! u chapter 18).  
Supply schedule SKM 3072-U  
1 SKM 3072-U hand-held  
transmitter with ME 3005 e  
mic head  
Transmitter cannot be switched to CHxxx:  
1 9 V PP3 battery  
No channel number is entered, “CH---” is briefly indicated,  
transmitter switches back to frequency display (=> enter a channel  
number! u chapter 17).  
1 MZQ stand adaptor  
8 colour-coded protection caps  
1 storage case  
1 operating instructions  
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Strong twittering:  
Two transmitters operate on the same frequency, the preselected  
frequency is subject to interference (=> change the transmission  
and receiving frequency! u chapter 16).  
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  
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Änderungen vorbehalten  
Subject to alterations  
Sous réserve de modification  
Con riserva di modifiche  
Reservado el derecho a introducir modificaciones  
Wijzigingen voorbehouden  
Sennheiser electromic GmbH & Co. KG  
D-30900 Wedemark  
Telefon 05130/600-0  
Telefax 05130/600-300  
77427 / A03  
Printed in Germany  
Publ. 01/03  
 

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