Omnitronic UHF-400 User manual

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Gardez ce mode d’emploi pour des
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Guarde este manual para posteriores usos.
BEDIENUNGSANLEITUNG
USER'S MANUAL
MODE D'EMPLOI
MANUAL DEL USUARIO
UHF-400
Wireless Microphone Set

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OPERATING INSTRUCTIONS
UHF-400
Wireless Microphone System
CAUTION!
Keep this device away from rain and moisture!
Unplug mains lead before opening the housing!
For your own safety, please read this user manual carefully
before you initial start-up.
Every person involved with the installation, operation and maintenance of this device has to
- be qualilfied
- follow the instructions of this manual
- consider this manual to be part of the total product
- keep this manual for the entire service life of the product
- pass this manual on to every further owner or user of the product
- download the latest version of the user manual from the Internet
1. INTRODUCTION
Thank you for having chosen an OMNITRONIC UHF-400. If you follow the instructions given in this manual,
we can assure you that you will enjoy this device for many years.
Unpack your OMNITRONIC UHF-400.
Please make sure that there are no obvious transport damages. Should you notice any damage, do not take
the device into operation and immediately consult your local dealer.
1.1 Features
Complete UHF microphone system
• Stationary receiver
• With two rubber antennas
• Operation in the low-interference UHF-band (730-820 MHz)
• With LED-display for power supply and signal input
• Squelch-control to eliminate the possibility of annoying noise bursts coming through your receiver
• With output level control
• With external transformer
• Latest transmission technology in a rugged metal housing
• Set includes 4 wireless microphones in a practical transport suitcase
• For 2 x 1.5 V Mignon batteries (type AA)
• Operation range 100 meters
• Delivery includes 4 colour caps for the individual mics on stage
• Delivery includes 8 batteries (type AA)
• Delivery includes 1 meter jack-jack cable for connecting the receiver to the audio mixer

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2. SAFETY INSTRUCTIONS
This device has left our premises in absolutely perfect condition. In order to maintain this condition and to
ensure a safe operation, it is absolutely necessary for the user to follow the safety instructions and warning
notes written in this user manual.
Important:
Damages caused by the disregard of this user manual are not subject to warranty. The dealer will
not accept liability for any resulting defects or problems.
Always plug in the power unit least. Make sure that the power-switch is set to OFF position before you
connect the device to the mains.
Keep away from heaters and other heating sources!
If the device has been exposed to drastic temperature fluctuation (e.g. after transportation), do not switch it
on immediately. The arising condensation water might damage your device. Leave the device switched off
until it has reached room temperature.
Never put any liquids on the device or close to it. Should any liquid enter the device nevertheless, disconnect
from mains immediately. Please let the device be checked by a qualified service technician before you
operate it again. Any damages caused by liquids having entered the device are not subject to warranty!
Always disconnect from the mains, when the device is not in use or before cleaning it.
CAUTION: Turn the amplifier on last and off first!
Please note that damages caused by manual modifications on the device or unauthorized operation by
unqualified persons are not subject to warranty.
Keep away children and amateurs from the device and the batteries!
CAUTION: High volumes can cause hearing damage!
There are no serviceable parts inside the device. Maintenance and service operations are only to be carried
out by authorized dealers.
3. OPERATING DETERMINATIONS
This device is a set of a wireless single antenna receiver and a wireless microphone. The receiver is allowed
to be operated with a direct current of 12-18 V and was designed for indoor use only. The microphone is only
allowed to be operated with with 2 x 1.5 V Mignon batteries, AA and was designed for indoor use only.
Batteries are hazardous waste which need to be disposed of appropriately. If the device is to be disposed,
the batteries have to be removed first.
Make sure that the poles are correct when inserting the battery.
Never let batteries lying around openly as there is the danger that these can be swallowed by children or
domestic animals. Immediately consult a doctor when batteries are swallowed!
Leaking or damaged batteries can cause irritations when getting into contact with the skin. In this case use
appropriate protective gloves.
Make sure that the batteries cannot be short-circuited, thrown into the fire and be charged. There is a danger
of explosion.
Never spill any liquids on the device. Should any liquid enter the device nevertheless, remove the batteries
immediately. Please let the device be checked by a qualified service technician before you operate it again.
Any damages caused by liquids having entered the device are not subject to warranty!

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Do not shake the device. Avoid brute force when operating the device.
When choosing the installation-spot, please make sure that the device is not exposed to extreme heat,
moisture or dust. There should not be any cables lying around. You endanger your own and the safety of
others!
Do not operate the device in extremely hot (more than 30° C) or extremely cold (less than 5° C)
surroundings. Keep away from direct insulation (particularly in cars) and heaters.
Operate the device only after having familiarized with its functions. Do not permit operation by persons not
qualified for operating the device. Most damages are the result of unprofessional operation!
Never use solvents or aggressive detergents in order to clean the device! Rather use a soft and damp cloth.
Please use the original packaging if the device is to be transported.
Please consider that unauthorized modifications on the device are forbidden due to safety reasons!
If this device will be operated in any way different to the one described in this manual, the product may suffer
damages and the guarantee becomes void. Furthermore, any other operation may lead to dangers like short-
circuit, burns, electric shock, etc.
3.1 Approval
This wireless microphone system was tested in accordance with the European standards EN 300422-2, EN
301489-09 and EN 60065. Consequently, this product adheres to the R&TTE-Directive of the European
Union and does not need an individual EC type examination of every member state.
In some countries, the operation of this wireless microphone system needs to be approved by your telecoms
regulatory authority. Please refer to your authority as listed below:
Telecoms & Postal Regulatory
Authorities in Europe
Austria Rundfunk und Telekom
Regulierungs-GmbH
www.rtr.at
Belgium Belgian Institute of postal
services and telecommunications
(BIPT)
www.bipt.be
Czech Republic Czech
Telecommunication Office
www.ctu.cz
Denmark National Telecom
Agency
www.tst.dk
Finnland Finnish Communications
Regulatory Authority (FICORA)
www.ficora.fi
France Autorité de Régulation
des Télécommunications (ART)
www.art-telecom.fr
Greece National
Telecommunications Commission
(EET)
www.eett.gr
Hungary Communication
Authority (HIF)
www.hif.hu
Iceland Post and Telecom
Administration (PTA)
www.pta.is
Ireland Commission for
Communications Regulation
(ComReg)
www.comreg.ie
Italy Italian Communications
Authority (AGC)
www.agcom.it
Latvia Telecommunication State
Inspection
www.vei.lv
Liechtenstein Office for
Communications (AK)
www.ak.li
Lithuania Radio Administration
www.rrt.lt
Luxembourg Institut
Luxembourgeois des
Télécommunications (ILT)
www.etat.lu/ILT
Netherlands Onafhankelijke Post
en Telecommunicatie Autoriteit
(OPTA)
www.opta.nl
Agentschap Telecom
www.agentschap-telecom.nl
Ministry of Economic Affairs
www.ez.nl
Norway Norwegian Post and
Telecommunications Authority
(NPT)
www.npt.no
Poland Urzad Regulacji
Telekomunikacji (URT)
www.urt.gov.pl
Portugal Autoridad Nacional De
Comunicaçòes (ICP-Anacom)
www.anacom.pt
Slovenia Agencija za
telekomunikacije, radiodifuzijo in
pošto
www.atrp.si
Spain Comisión del Mercado de
las Telecomunicaçiones (CMT)
www.cmt.es
Sweden National Post and
Telecom Agency (PTS)
www.pts.se
Switzerland Federal Office for
Communications
www.bakom.ch
UK Office of Telecommunications
(Oftel)
www.oftel.gov.uk
Postal Services Commission
(Postcomm)
www.postcomm.gov.uk/
Radiocommunications Agency
www.open.gov.uk/radiocom

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Telecoms & Postal Regulatory
Authorities in the Rest of the
World
Argentina Comisión Nacional de
Comunicaciones (CNC)
www.cnc.gov.ar
Australia Department of
Communications, Information
Technology and the Arts
www.dca.gov.au
Brazil Anatel
www.anatel.gov.br
Canada Canadian Radio-
television and
Telecommunications Commission
(CRTC)
www.crtc.gc.ca
Colombia Ministerio de
Comunicaciones
www.mincomunicaciones.gov.co
Hong Kong Office of the
Telecommunications Authority
(OFTA)
www.ofta.gov.hk
Japan Ministry of Public
Management, Home Affairs,
Posts and Telecommunications
www.soumu.go.jp
Korea Ministry of Information and
Communication (MIC)
www.mic.go.kr
Mexico Secretaría de
Comunicaçiones y Transportes
(SCT)
www.sct.gob.mx
Taiwan Ministry of Transportation
and Communications (MOTC)
www.motc.gov.tw/welcome.htm
Thailand Post and Telegraph
Department (PTD)
www.ptd.go.th
USA Federal Communications
Commission (FCC)
www.fcc.gov
Postal Rate Commission (PRC)
www.prc.gov
4. DESCRIPTION OF THE DEVICE
Frontpanel:
(1) Receiver-modules
(2) Power switch
Receiver-module:
(3) Power-LED
(4) RF-LED
(5) AF-LED
(6) Squelch-control
(7) Volume-control

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Rear panel:
(8) Antenna connector B
(9) Power supply socket
(10) Audio output socket
(11) Channel 1-4 output sockets
(12) Antenna connector A
(13) Microphone grille
(14) Battery-LED
(15) ON/OFF-switch
(16) Battery cover
(17) Antenna
CONNECTIONS
Connect the wireless receiver via the Audio Out-socket and a standard microphone lead with a microphone
input socket of your mixer.
Adjust the antennas vertically.
Plug the connection cable of the power-unit with the DC IN-socket. Plug the power unit into your outlet.
Inserting/Replacing the batteries
Please refer to the explanations under Operating Determinations.
Open the battery cover on the bottom and remove it.
If replacing the batteries, remove the old batteries from the battery compartment. Only replace complete
battery-sets.
Leaky or damaged batteries might cause cauterisation when in contact with the skin; therefore, use suitable
protective gloves.
Caution!
Danger of explosion when battery is replaced improperly.
Only replace by the same type or similar types recommended by the manufacturer.
Remove empty batteries in accordance with the instructions of the manufacturer.
Insert the batteries and make sure that the poles are correct.
Replace the battery cover and close it.

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With the ON/OFF-switch, you can switch the device on and off. When switching the device on, the red LED
shortly lights up. In this case, the power supply is sufficient.
When the batteries are getting weaker, the red LED is permanently illuminated. In this case, the batteries
have to be replaced.
If the red LED does not light up when switching on, there are either no batteries inserted or the poles are
wrong.
If the microphone is not used, switch it off via the slide switch. If the device will not be used for a longer
period of time, remove the batteries in order to avoid battery leakage.
In order to have a long battery life, you should only use alcaline batteries.
5. OPERATION
With the ON/OFF-switch, you can switch the device on and off. When switching the device on, the red LED is
illuminated.
If microphone signals are being received, the RF-LED is illuminated.
For optimum receiving please follow these instructions:
•Maintain a line-of-sight between the transmitter and receiver antennas, if possible. Avoid placing
transmitter and receiver where metal or other dense materials may be present.
•Avoid placing the receiver near computers or other RF generating equipment.
•The Squelch-control is factory preset at the 12 o’clock position for optimum performance. No further
adjustment is normally required. However, it is possible to adjust the squelch control to emphasize either
signal quality or system range.
To raise the squelch threshold, rotate the control clockwise. This causes the receiver to demand a higher
quality signal (less noise before muting), but it reduces the operating range.
To lower the squelch threshold, rotate the control counterclockwise. This allows a lower quality signal
through (more noise before muting), but it extend s the operating range.
Adjust the signal output level via the Volume-control.
If the receiver is no longer used, please turn the Volume-control to 0 and switch the device off.
IMPORTANT: Every wireless microphone installation is a unique situation, and can present a variety of
problems. Never attempt a live performance without first conducting a test of the system in the performing
area. If major changes (additional wireless systems or intercoms, relocation of scenery, etc.) have been
made since the last test, check the wireless system again - as close to performance time as possible.
6. PROBLEM CART
PROBLEM: REMEDY:
No power. Check the connection cable of the power unit and any extension-cables.
No sound; receiver RF-
LED does not flash.
Make sure POWER switches on transmitter and receiver are on.
Check transmitter Power-LED to ensure that battery is providing power.
Replace battery if necessary.
Check receiver squelch setting.
Make sure that the receiver is in the line of sight of the transmitter. If
necessary, reduce the distance between transmitter and receiver.
No receiver sound;
receiver RF-LED flashes.
Turn up the receiver audio output LEVEL control.
Check for proper connection between receiver and microphone mixer.
Talk into the microphone and observe the receiver RF-LED. If it flashes, the
problem is elsewhere in the sound system.
Received signal is noisy
or contains extraneous
sounds with transmitter
on.
Check transmitter Power-LED to ensure that battery is providing power.
Remove local sources of RF interference, such as lighting equipment .
Two transmitters may be operating on the same frequency. Locate and turn
one off.

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Signal may be too weak. If possible, move receiver closer to the transmitter.
Adjust receiver Squelch-control.
Noise from receiver with
transmitter off.
Adjust receiver Squelch-control.
Remove local sources of RF interference, such as lighting equipment.
Reposition the receiver.
Momentary loss of sound
as transmitter is moved
around performing area.
Reposition receiver and perform another test and observe the RF-LED. If
audio drop-outs persist, mark these dead spots in the performing area and avoid
them during the performance.
7. CLEANING AND MAINTENANCE
Disconnect from mains before starting maintenance operation!
DANGER TO LIFE!
We recommend a frequent cleaning of the device. Please use a soft lint-free and moistened cloth. Never use
alcohol or solvents!
There are no servicable parts inside the device except for the batteries. Maintenance and service operations
are only to be carried out by authorized dealers.
In order to replace the battery please refer to "Inserting/exchanging the batteries".
Should you need any spare parts, please use genuine parts.
Should you have further questions, please contact your dealer.
8. TECHNICAL SPECIFICATIONS
Wireless receiver:
System: Switching Diversity, one channel
Carrier frequency: UHF 730 - 820 MHz
Frequency stability: ±0.002 %
S/N-ratio: >90 dB
Selectivity: >80 dB
Dynamic range: >80 dB
Modulation method: FM-frequency modulation
Coverage: 80 m (with line-of-sight)
AF response: 40 - 16,000 Hz
Audio output: Mono ¼" jack-socket
Power supply: 13-18 V DC, 500 mA
Power consumption: 5 W
Dimensions: 483 x 250 x 44 mm
Weight: 1 kg
Wireless microphone:
RF power output: 30 mW
Coverage: 100 m (with line-of-sight)
Power supply: 2 x 1.5 V Mignon batteries (type AA)
Current consumption: approx. 55 mA
Battery life: approx. 8-10 hours
Dimensions: 50 x 260 mm
Weight: 400 g
Please note: Every information is subject to change without prior notice. 27.04.2005 ©