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MANUALE D’USO – Sezione 1
USER MANUAL - Section 1
BEDIENUNGSANLEITUNG - Abschnitt 1
CARACTERISTIQUES TECHNIQUES - Section 1
Le avvertenze nel presente manuale devono essere osservate congiuntamente al “Manuale d’uso - Sezione2”.
The warnings in this manual must be observed together with the "User Manual - Section 2".
Die Warnungen in diesem Handbuch müssen in Verbindung mit der "- Bedienungsanleitung - Abschnitt
2" beobachtet werden.
Les avertissements dans ce manuel doivent être respectées en collaboration avec le "Caratteristiques
Techniques - Section 2".
AA800W / UPA800
ENGLISH
9
AA800W ANTENNA AMPLIFIER
1 DESCRIPTION
The AA 800W programmable increase antenna amplifier (UHF band) is supplied together with two
BNC/BNC cables of 40 cm length in a 2 pieces kit.
This amplifier permits to compensate the losses caused by possible long sections of cable to
antennas, from AS6W distributor. Use can be made of the AA 800W amplifier both with RDA800W
directional antennas and OWBA omnidirectional wide-band antennas.
By means of the AA 800W amplifier you can:
- Improve the signal "coverage" in the working zone.
- Increase the useful range of radio-microphones, in this way permitting installations
even on wide surfaces such as stadiums or sports halls.
2 INSTALLATION
Two AA 800W amplifiers shall be used, one per antenna.
3 CONNECTION
The following description shows the connection of the AA 800W antenna amplifier to the RDA800W
directional antenna or to the OWBA omnidirectional antenna together with AS6W distributor.
- Set the “Phantom Power” button, positioned on the back of AS6W distributor to ON,
in this way the antenna amplifiers will be fed by means of BNC connector that carries also the radio-
frequency signal.
Check that the green led positioned on the front panel of AS6W is on (fig. 1)
- Make use of the 40 cm cable provided in the kit to connect the RDA800W directional
or OWBA omnidirectional antenna with the stand adapter provided in kit to the antenna amplifier
input connector (figg. 2-3).
ENGLISH
10
Make use of a BNC/BNC 50 Ohm cable (not included) to connect the “RECEIVER” connectors of the
antenna amplifiers to the INPUT A and B connectors of the antenna distributor: the switching on of
GREEN LED“ON” of AA800W indicates that the system is being fed correctly.
The length of above-said cable is determined by the type of connection to be carried out.
The antenna amplifier is provided with a deviator that permits to change the increase from 5 to 10,
to 15, to 20dB.
AA800W / UPA800
ENGLISH
11
The table below shows the various types of conductors with different length and relevant
amplification. With these data, every operator can decide, according to the available cable and the
length of the section for the specific application, how to set the AA800W increase selector.
ENGLISH
12
* Considering the 10 mm thickness, the cable shall be cabled with “N” connector and then connected
to the antenna amplifier (AA800W) and to the antenna distributor (AS6W) by means of an N-BNC
adapter.
# Suggested in most of configurations and easily available
As an example, if antennas have to be positioned at forty meters approx. from where receives and
antenna distributor are located, it is sufficient to make use of a BNC/BNC cable of RG223/U type, of
approx. length of 40 meters and to set the AA 800W increase to 20 dB (or to make use of a BNC/BNC
cable of RG213/U type, of approx. length of 40 meters and to set the increase to 10 dB).
4 OPTIMAL POSITIONING OF THE ANTENNAS
The installation of the antennas close to the stage or to the working zone of the transmitters ensures
an optimal radio coverage as well as a high standard of immunity to external interference. This is
possible thanks to the AA800W antenna amplifier. Even in INDOOR use many advantages can be
got by positioning the receivers in one environment together with other devices in control room and
the antennas at a certain distance in the same premise where the transmitters are located (even
without an available socket). In this case, such an arrangement would solve the problem generated
by the wall reflections, that normally reduce the range of the radio equipment.
5 TECHNICAL SPECIFICATIONS
Types of conductors
Length of cable
Recommended
amplification
RG 58 (diameter 5 mm)
RG 58 ( diameter 5 mm )
RG 58 ( diameter 5 mm )
RG 58 ( diameter 5 mm )
From 3 to 8 metres
From 9 to 14 metres
From 15 to 20 metres
From 21 to 26 metres
5 dB
10 dB
15 dB
20 dB
RG 223/U ( diameter 5 mm)#
RG 223/U ( diameter 5 mm)#
RG 223/U ( diameter 5 mm)#
RG 223/U ( diameter 5 mm )#
From 5 to15 metres
From 16 to 25 metres
From 26 to 35 metres
From 36 to 45 metres
5 dB
10 dB
15 dB
20 dB
RG 223/U (diameter 10 mm )
RG 223/U (diameter 10 mm)
RG 223/U (diameter 10 mm)
RG 223/U (diameter 10 mm)
From 10 to 30 metres *
From 31 to 45 metres *
From 46 to 64 metres *
From 65 to 80 metres *
5 dB
10 dB
15 dB
20 dB
Frequency range
470-870 MHz
Gain
selectable 5dB-10dB-15dB-20dB
Power supply
8 Vcc @ 70mA (REMOTE POWER (AS6W)
Noise figure
0.9 dB
Compression point
1 dB = 17.8 dBm
OIP3 = 33 dB
Input and Output
standard BNC connectors
Input and Output impedance
50 Ohm
AA800W / UPA800
ENGLISH
13
UPA 800 PROGRAMMABLE ATTENUATOR
1 DESCRIPTION
The UPA 800 programmable attenuation antenna attenuator (UHF band) is supplied together with
two BNC/BNC cables of 40 cm length in a 2 pieces kit.
This attenuator permits to increase the immunity to the external noises when joined to the AS6W
antenna distributor.
Use can be made of the UPA 800 attenuator with RDA800W directional antennas.
By means of UPA 800 attenuator you can:
- Make use of many radio-microphones in a very small space, very close to directional
antennas without risking any intermodulation
- Make the radio-microphones immune to external interference.
2 INSTALLATION
In many applications it is necessary to use two programmable attenuations UPA800, one for each
antenna dell'AS6W
3 CONNECTION
The following description shows the connection of the UPA 800 antenna attenuator to the RDA800W
directional antenna together with AS6W distributor.
- Set the “Phantom Power” button, positioned on the back of AS6W distributor to ON, in this
way the antenna attenuators will be fed by means of BNC connector that carries also the radio-
frequency signal. Check that the green led positioned on the front panel of AS6W is on (fig. 1)
- Make use of the 40 cm cable to connect the RDA800W directional to the antenna amplifier
input connector (fig. 2).
ENGLISH
14
Make use of a BNC/BNC 50 Ohm cable connect the “RECEIVER” connectors of the antenna
attenuators to the INPUT A and B connectors of the antenna distributor: the switching on of the RED
LED “ON” of UPA800 indicates that the system is being fed correctly. The antenna attenuator is
provided with a deviator that permits to vary the signal attenuation from 2dB – 6dB –12dB or 18dB.
The table below shows the attenuation suggested depending on the distance between the
directional antennas and transmitters on the stage, as reference 2 meters of coaxial cable between
the antenna and the splitter AS6W.
Distance between directional antennas and
transmitters
Recommended attenuation
for UPA800
Less than 5 mt
12 dB
From 5 to 15 mt
6 dB
From 16 mt to 36 mt
2 dB
Over 36 mt
Attenuation not necessary
It is recommended to do some tests on the practice field if there is a group of microphones very
close to the antennas and other more distant microphones, this is one of the most critical
applications for any type of microphone.
4 RECOMMENDED ATTENUATION
For example: if the situation allowed to place the directional antenna to the stage (less than 5
metres from the artists who use wireless microphones), selecting an attenuation of 12 dB is
equivalent to a double advantage:
1) most of intermodulation events would be avoided (saturation in the receiver
input step)
2) possible external noises would be hugely attenuated (more than 50 times).
Also the useful range of the system would be decreased but, anyway, it would be much
higher than 50 metres (well beyond the maximum requirement of the application).
5 TECHNICAL SPECIFICATIONS
Frequency range
470-870 MHz
Attenuation
selectable 2dB-6dB-12dB-18dB
Power supply
8 Vcc @ 70mA (REMOTE POWER (AS6W)
Input and Output
standard BNC connectors
Input and Output impedance
50 Ohm
Features, specification and appearance of products are subject to change
without notice.
dBTechnologies reserves the right to make changes or improvements in design
or manufacturing without assuming any obligation to change or improve
products previously manufactured.
A.E.B. Industriale Srl
Via Brodolini, 8
Località Crespellano
40053 VALSAMOGGIA
BOLOGNA (ITALIA)
Tel. +39 051 969870
Fax +39 051 969725
www.dbtechnologies.com
info@dbtechnologies-aeb.com
Codice 420120236
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