DUAL 1 INPUT TO 6 OUTPUTS ANALOG AUDIO

AAD3000C03
DUAL 1 INPUT TO 6 OUTPUTS ANALOG AUDIO DISTRIBUTOR WITH
TRANSFORMER BALANCED INPUTS AND LOW LEVEL MICROPHONE SIGNAL
SENSITIVITY
Version 1.0
Albalá Ingenieros, S.A.
06 June 2016 - © Albalá Ingenieros S.A. - All rights reserved
Medea, 4 - 28037 Madrid - Spain
AAD3000C03
AAD3000C03
DUAL 1 INPUT TO 6 OUTPUTS ANALOG AUDIO DISTRIBUTOR WITH
TRANSFORMER BALANCED INPUTS AND LOW LEVEL MICROPHONE SIGNAL
SENSITIVITY
Version 1.0
1. DESCRIPTION ...................................................................................................................... 5
1.1. The AAD3000C03 ........................................................................................................................... 5
1.2. Features ............................................................................................................................................. 6
1.3. Block diagram .................................................................................................................................. 7
2. SPECIFICATIONS ................................................................................................................. 9
3. INSTALLATION .................................................................................................................. 11
3.1. Initial inspection .......................................................................................................................... 11
3.2. Safety instructions ...................................................................................................................... 11
3.3. Environmental considerations ................................................................................................ 12
3.4. Power considerations ................................................................................................................. 12
3.5. Module configuration ................................................................................................................ 12
3.6. Installing the module in the mounting frame ................................................................... 13
3.7. Interconnection ............................................................................................................................ 14
3.7.1. Analog audio connections ............................................................................................... 15
4. OPERATION ...................................................................................................................... 17
4.1. Front panel description .............................................................................................................. 17
4.2. Module remote control and supervision ............................................................................. 18
5. GLOSSARY ........................................................................................................................ 19
6. REGULATIONS .................................................................................................................. 21
7. VERSIONS ......................................................................................................................... 23
AAD3000C03
Albalá Ingenieros | Manual AAD3000C03
1. DESCRIPTION
1.1. The AAD3000C03
The AAD3000C03 module is a low distortion audio amplifier-distributor ideal for use in
professional production environments. It provides two identical, independent channels
for use with two monophonic signals or one stereophonic signal.
Each channel provides a discrete gain adjustment from 0 to 20dB in 4dB steps and a
continuous gain adjust on the front panel of ±2dB. The input is transformer balanced.
This version provides high gain for amplification and distribution of microphone signals.
Each channel provides six electronically balanced outputs. Both channels use
independent integrated circuits to ensure a high degree of separation between them.
The AAD3000C03 is a TL3000 terminal line module and can be housed in a three rack
unit (3 RU) UR3000 mounting frame or a 1 RU UR3100 mounting frame.
The AAD3000 family includes a group of modules that all distribute signals between
their inputs and outputs, with the following variants:
• AAD3000C01: A standard distributor.
• AAD3000C02: A standard distributor with an added isolation transformer for each
input. This transformer provides electrical isolation but not safety isolation, and cannot
be used to isolate hazardous voltages from the input signal.
• AAD3000C03: A standard distributor with an added isolation transformer and a 60dB
amplifier for each input. This device has been designed for conversion of microphone
signals to line level signals. The transformer provides electrical isolation but not safety
isolation, and cannot be used to isolate hazardous voltages from the input signal.
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Albalá Ingenieros | Manual AAD3000C03
1.2. Features
• Analog audio signal distributor.
• Provides two independent channels.
• Each channel distributes one audio input to six outputs.
• Excellent intermodulation.
• Inputs are transformer balanced to eliminate ground loops.
• Electronically balanced outputs.
• Provides an amplifier with selectable gains of +6 or +60dB.
• Low impedance outputs can drive loads of up to 600Ω at maximum signal levels.
• Each channel provides gain adjustment from 0 to 20dB in 4dB steps.
• Each channel provides fine gain adjustment with a range of 4dB via front panel
potentiometers.
• Allows combination of the two channels to provide one monaural signal with 6dB
attenuation before summing via internal jumper.
• One UR3000 mounting frame can house up to 12 AAD3000C03 modules. If power
supply redundancy is required and FA3000 or FA3001 modules are used then only 10
modules can be housed in the mounting frame. If PSU3300 or PSU3301 modules are
used for this purpose then up to 12 modules can be installed.
• One UR3100 mounting frame can house up to three AAD3000C03 modules.
• Low power.
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Albalá Ingenieros | Manual AAD3000C03
1.3. Block diagram
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Albalá Ingenieros | Manual AAD3000C03
AAD3000C03
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Albalá Ingenieros | Manual AAD3000C03
2. SPECIFICATIONS
Analog audio signal input
Connector
Impedance
Type
Common mode rejection ratio (CMRR):
at 50 Hz
at 20 kHz
Maximum common mode range
Maximum input level
Analog audio signal output
Connector
Impedance
Type
Number of outputs
Difference between a 600Ω loaded output and an unloaded output
Maximum output level
Output offset voltage
Short-circuitable outputs
Analog audio signal
Gain adjust range:
Continuous
Discrete
Frequency response
3 dB cuttoff frequency:
Upper
Crosstalk between channels
Crosstalk between modules
Noise
Plug-in terminal,
3.81mm pitch
>5 kΩ
Transformer balanced
>75 dB
>70 dB
±60 V
18 dBu
Plug-in terminal,
3.81mm pitch
73Ω ± 1 %
Active balanced
6 per section
1 dB
24 dBu
<30 mV
Yes
±2 dB
6 - 26dB / 60 - 80dB with
4dB steps
±0.1dB from 20Hz to 20 kHz
>30 kHz
<- 80dB measured with a 1kHz
tone and 60dB gain
<- 100dB measured with a 1kHz
tone and 0dB gain
<- 120dBu measured from
20Hz to 20kHz,
Rg = 200Ω and 60dB gain
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Albalá Ingenieros | Manual AAD3000C03
Harmonic distortion plus noise (THD+N)
General
Maximum power supply current
Operating temperature range
Approximate weight
10
<- 52dB measured with a 1kHz
maximum level tone,
60dB gain and
output loaded with 600 Ω
+ 500 / - 500 mA
0 .. 50 °C
400 g
Albalá Ingenieros | Manual AAD3000C03
3. INSTALLATION
THE AAD3000C03 MODULE CONTAINS ELECTRONIC DEVICES SENSITIVE TO
ELECTROSTATIC DISCHARGE. Always use antistatic bags clearly identified
with a high degree of shielding for storage and transportation.
The AAD3000C03 module is composed of two parts: one AAD3000P06 main board and
one XAD3000P02 rear board. Both parts must be installed in a UR3000 or UR3100
mounting frame following the instructions in the corresponding section of this chapter.
3.1. Initial inspection
Verify that the package has been properly handled during transport. After opening the
packaging, check that one AAD3000P06 main board and one XAD3000P02 rear board are
inside.
You must notify your Albalá Ingenieros distributor or dealer of any damage or defects
observed.
Follow the instructions in this manual to install this module in the mounting frame.
3.2. Safety instructions
• This equipment must be connected to a mains outlet with a protective
earth connection. Never use extension cords that do not have protective
earthing connection. The lack of an effective electrical connection between
the ground pin in the mains input connector of the equipment and the
protective earth of the electrical power distribution can cause serious harm.
• All modules of the Albalá Ingenieros TL3000 terminal line can be
hot-plugged or unplugged without suffering any damage or affecting the
processes that are currently taking place in other modules in the same
mounting frame. When a module is installed in an empty bay of a mounting
frame, it is necessary to mount the rear board that is part of that module.
Prior to installing this board, the mounting frame must be disconnected
from the power supply network. This is required because in addition to the
risk of electrocution for the person handling the device it is possible that a
high instantaneous current coming from the power supply could damage
the connectors and components of the mounting frame and/or the rear
board.
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Albalá Ingenieros | Manual AAD3000C03
• The AAD3000C03 module and the mounting frame should always be
installed, maintained, operated and removed by personnel with sufficient
technical qualifications. The equipment should never be placed in damp
areas, near splashing liquid, or in explosive or corrosive atmospheres.
Neither modules nor mounting frames can be used in applications that
could endanger human life.
3.3. Environmental considerations
This symbol indicates that this equipment must be deposited at a collection
point for proper waste treatment once it has reached the end of its useful
life.
3.4. Power considerations
The power supplies in the mounting frames of the TL3000 family have been designed to
supply 6 W/slot. The power consumption of the majority of the TL3000 family of
modules is less than 6 W under all conditions, therefore each mounting frame can house
as many modules as it has slots.
Under normal circumstances (with music or vocal signals with levels of 4dBu) the power
consumption of the AAD3000C03 is less than 6 W and therefore up to 12 modules can
be installed in a UR3000 mounting frame or up to three modules in a UR3100.
If the AAD3000C03 is used to distribute signals with a higher average level and the
outputs are loaded with 600Ω then the power consumption of the module can exceed
the 6 W reserved per slot. In such cases the total number of AAD3000C03 modules that
can be installed in a mounting frame is lower than the number of available slots.
Use the following expression to calculate the actual power consumption of the
AAD3000C03 and to determine how many modules can be installed in a given mounting
frame without exceeding the capabilities of its power supply:
Power Consumption = 5 W + (P output (W)/0.6) * Number of Outputs Used
3.5. Module configuration
This module must be configured before installation in the mounting frame. The
configuration process is described in detail in the corresponding paragraph in the
OPERATION section.
• Use program jumper J3 to set the module to either sum both channels (A+B) or not
(A/B).
• Set the gain range using program jumpers J4 and J5 according to the values shown in
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Albalá Ingenieros | Manual AAD3000C03
the silkscreening.
• Set the desired gain value to +6dB or + 60dB using program jumpers J1 and J6.
3.6. Installing the module in the mounting frame
The steps needed to install the AAD3000C03 module with the rear board in the
mounting frame are:
1 - Disconnect all power cords from the power supplies of the mounting frame.
2 - Remove the blank panels covering the front and rear of the empty bays chosen for
installing the AAD3000C03 in the mounting frame.
3 - Install the XAD3000P02 rear board ensuring that its 12-pin connectors are properly
aligned with the mounting frame´s mating connectors. Check that the orientation of
the board is correct by looking at the placement of the text printed on it according to
the illustration below.
Details for installation of the module in 3 RU mounting frames
Details for installation of the module in 1 RU mounting frames
4 - Attach the rear board to the mounting frame with two M3 metric screws and tighten.
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Albalá Ingenieros | Manual AAD3000C03
5 - Verify that the main board is configured according to the user requirements. The
configuration process is detailed later in the INSTALLATION section of this manual.
6 - Insert the AAD3000P06 board (main board of the AAD3000C03 module) into the front
of the mounting frame. The edges of the card slide into two plastic guides inside the
mounting frame.
7 - Affix the main board to the mounting frame using the two screws included on the
front panel.
After these steps, the module is ready to be connected to other equipment.
3.7. Interconnection
The following figure shows the AAD3000C03 module rear board connector layout.
Rear view of the AAD3000C03
The AAD3000C03 module provides two analog audio inputs (IN-A, IN-B) and six outputs
(OUT1-A to OUT6-A, OUT1-B to OUT6-B) per section. The connectors labeled SPARE-A y
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Albalá Ingenieros | Manual AAD3000C03
SPARE-B are not used.
The distributor's balanced outputs are generated with two independent amplifiers - one
with a gain of +1 and the other with a gain of -1. If unbalanced operation is desired then
the number of outputs per channel is doubled (12 instead of six), however the maximum
output signal level cannot exceed 18dBm over 600Ω. Keep in mind that the output
marked with the negative (-) sign is 180o out of phase with the signal at the output
marked by a positive (+) sign.
The rear interconnection board is not designed to withstand mechanical stress. The
wiring must be fastened properly to the frame where the mounting frame is housed to
prevent the rear board from supporting the weight of the cables.
3.7.1. Analog audio connections
Analog audio inputs are high impedance, balanced and use 3.81mm pitch terminal
block connectors. If another termination resistance is required, a resistor with the
desired termination value can be externally mounted between the + and - terminals.
The analog audio outputs are balanced, use 3.81mm pitch terminal block connectors
and their characteristic impedance is 73Ω.
For analog audio connections two-wire shielded cable is preferred. The GND terminal
allows connection of the cable shield.
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Albalá Ingenieros | Manual AAD3000C03
AAD3000C03
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Albalá Ingenieros | Manual AAD3000C03
4. OPERATION
This section describes the significance of the front panel indicators of the AAD3000C03
module and their remote control and monitoring ability.
4.1. Front panel description
The appearance of the front panel and the elements it contains are shown in the
following illustration.
Front panel of the AAD3000C03
The AAD3000C03 provides to independent gain controls. One of these is the fine adjust,
located on the front panel of the module and provides a range of ±2dB. The second is a
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Albalá Ingenieros | Manual AAD3000C03
coarse adjust in 4dB steps and a range between 0 and 20dB. The total gain for each
channel is the sum of these two controls and therefore has a total range of -2dB to
+22dB.
Due to the optional high gain provided, either +6dB or +60dB can be added
independently to each channel. The total gain of the channel is the sum of of its three
gain controls and ranges from +4dB to + 60dB. To amplify signals from dynamic
microphones the +60dB gain option should be selected using jumpers J1 and J6. A total
gain of 0dB is not possible in this high gain version of the module.
4.2. Module remote control and supervision
The AAD3000C03 CANNOT be remotely controlled or supervised.
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Albalá Ingenieros | Manual AAD3000C03
5. GLOSSARY
dB
Logarithmic measurement to express ratios of power.
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Albalá Ingenieros | Manual AAD3000C03
AAD3000C03
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Albalá Ingenieros | Manual AAD3000C03
6. REGULATIONS
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Albalá Ingenieros | Manual AAD3000C03
AAD3000C03
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Albalá Ingenieros | Manual AAD3000C03
7. VERSIONS
Ver.
Date
0.0
1.0
12-11-2014
06-06-2016
Description
Preliminary Version
First version
Albalá Ingenieros, S.A.
Medea, 4 - 28037 Madrid
Spain
+34 913274453
www.albalaing.com
[email protected]