AEQ LIVE 20 TR Bedienungsanleitung
AEQ LIVE 20 TR
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USER MANUAL
ED 05/07
AEQ LIVE 20 TR
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LIVE 20 TR USER’S MANUAL
1. LIVE 20 TR General description
1.1 General Description
1.2Construction
1.3 Front panel description
1.4 FCC Compliance
1.5 Warning to Users
2. LIVE 20 TR Hardware description
2.1 On/Off Switch
2.2 Display and channel selector
2.3 Audio input
2.4 TX Antenna connector
2.5 Low battery indicator
2.6 Audio level adjustment
2.7 Peak audio indicator
2.8 Power supply
2.9 Other connectors
3. LIVE 20TR Technical specifications
3.1 Technical characteristics
3.2 Mechanical specifications
4. ACCESORIES
5. CH-20 BATTERY CHARGER
5.1 General description
5.2 Front and rear view
5.3 Connection and starting to work
5.4 Indications
5.5 Characteristics
5.6 Protections
5.7 Connectors pin-outs
ANNEX 1 – Connector pin-out
ANNEX 2 – Security recommendations
A.E.Q. Warranty
AEQ LIVE 20 TR
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1. LIVE 20 TR GENERAL DESCRIPTION
1.1 LIVE 20 TR GENERAL DESCRIPTION
The AEQ LIVE 20 TR is a high specification FM transmitter for portable and
mobile service.
The signal generators together with the RF output module and the audio
processor forms a high quality transmitter capable of faithfully broadcasting
work in any situation. Transmit frequency are delivered in digital frequency
synthesizers and allow the selection of up to 16 pre-programmed channels.
The audio processor allows the use of dynamic microphones as well as line
level sources.
A mechanized aluminium enclosure assures outstanding mechanical stability
and immunity to interference and crosstalk.
In standard service the LIVE 20 TR is powered by a removable rechargeable
battery pack, which can be recharged in the unit as well. Also supplied with the
LIVE 20 TR is a ¼ wavelength centered antenna.
A 9 pin sub-D connector in the left side of the unit allows external
reprogramming.
AEQ LIVE 20 TR
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1.2 CONSTRUCTION
The boards of the AEQ LIVE 20 TR are made of epoxy glass fiber type FR4
with a thickness of 1,6 mm, 2 side type.
The AEQ LIVE 20 TR is equipped with Surface Mounted Devices (SMD) that
give the equipment a high grade of robustness.
If one SMD is damaged, the defective component should be replaced with a
new one.
Do not sense unsoldered components, even if they seem to be faultless.
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1.3 FRONT PANEL VIEW
AUDIO
PHONES 2CH RX CH TX
PEAK
LOW
DSP
ANT RX
AUDIO IN
ANT TX
BAT
POWERPOWER
GAIN
PHONES 1VOL
OO
1123
4567
AEQ LIVE 20 TR
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1.- ON/OFF switch
2.- Display and channel selector
3.- Audio input
4.- Tx antenna connector
5.- Low battery indicator
6.- Audio level adjustment
7.- Peak audio indicator
Note: The Rx section is not equipped
1.4 FCC Compliance
This device complies with part 15 of the FCC rules. Operation is subject to the
condition that this device does not cause harmful interface.
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
1.5 Warning to Users
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
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2. LIVE 20 TR HARDWARE
2.1 ON/OFF SWITCH
To switch on the equipment you must act over the switch labelled POWER.
When the “power” switch is activated, the internal microcontrollers will start
executing some routines. Once the routines have been successfully executed,
the equipment will provide the RF output power.
Until the microcontrollers have finished with the verification of the PLLs locking,
the equipment will not provide RF power to the output.
The equipment will automatically start in the last selected channel.
2.2 DISPLAY AND CHANNEL SELECTOR
The equipment is provided with a selector and an hexadecimal display in order
to select the working frequencies.
The display will show the selected channel in hexadecimal format (0 to F).
The channel push button selector allows to the user to change the selected
channel. It has a little action delay to prevent undesired frequency changes.
If the user maintains the button pressed, then the channel display changes
continuously.
The 16 registries can only be changed by factory staff connecting a PC to the
SUB-D(9p), located in one side of the equipment.
The frequency range of each equipment is specific and is adjusted at the factory
before shipment.
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CHANNEL FREQUENCIES:
CHANNEL FREQUENCY
0 161.00000
1 161.00625
2 161.01250
3 161.01875
4 161.02500
5 161.03125
6 161.03750
7 161.04375
8 161.05000
9 161.05625
A 161.06250
B 161.06875
C 161.07500
D 161.08125
E 161.08750
F 161.09375
2.3 AUDIO INPUT
The audio input connector Is a XLR, 3 pin audio connector which allows the
connection of any kind of balanced or unbalanced audio signal source with
levels varying from MIC level to LINE level.
2.4 TX ANTENNA CONNECTOR
The TX Antenna connector Is a BNC connector used to connect the proper
antenna to the equipment.
The user can choose to connect the antenna to the equipment directly or to
connect an antenna with a cable.
The output impedance of this port is 50 ohms.
This port can be used as well to check the equipment specifications in a
laboratory bench.
2.5 LOW BATTERY INDICATOR
The low-battery indicator Is a red LED that shows the battery working status.
If the red led stays dark, then the battery is still in good working conditions.
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If the red led is lighting, then means that the approximate remaining work time is
around 20 minutes.
The decision to send the low battery message to the red light is taken by one of
the inner microcontrollers.
One ADC (Analog to Digital Converter) takes the battery voltage data and then
the microcontroller takes the decision to turn on or not the red led.
2.6 AUDIO LEVEL ADJUSTMENT
The audio GAIN selector is a multi-position switch that provides audio level
adjustments for a wide variety of audio sources.
Its associated set of precision resistors allows the user to select gain preset
ranging from MIC level sources to LINE level sources.
This feature is very useful so that the user doesn’t need any type of external
attenuator to accommodate any type of audio signal source to the equipment
audio signal envelope.
2.7 PEAK AUDIO INDICATOR
When the red led is flashing, then the user is achieving the peak modulation
deviation.
This indicator is very usefully to adjust the GAIN pot in order to have the best
signal to noise ratio (SNR).
2.8 POWER SUPPLY
The LIVE 20 TR is powered by an internal Lithium / Ion battery DR-202. Please
never substitute this battery for any other or connect the equipment to any
external feeder.
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To re-charge a battery you must only use the charger supplied with the
equipment.
Before operating the equipment, please ensure that the battery is fully charged.
During normal (HI POWER) operation with fresh batteries you can expect more
than 4 hours of continuous operation.
It is also possible to check the charge of the battery by clicking the rounded
push button and the looking at the status of the 4 LEDs next to it.
2.9 OTHER CONNECTORS
In one side of the unit the user will find two connectors: one to charge the
internal Li-Ion battery, the other one to program the internal microcontrollers.
The first connector is a standard low power supply connector to give the user
the possibility to charge the battery from the external supplied charger.
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