Junger Audio b43 User Manual
4ch digital audio toolbox
b43
release 2.1.1
FOREWORD
Thank you for buying and for using the 4-channel Digital Audio
Toolbox b43.
Not only you have aquired the latest generation of digital
dynamic range processing, but also a piece of equipment which
is unique in its design and specification.
Please read this manual carefully to ensure you have all the
information you need to use the 4-channel Digital Audio Toolbox
b43.
The unit was manufactured to the highest industrial standards
and went through extensive quality control checks before it was
supplied.
If you have any comments or questions about installing, settingup or using the b43, please do not hesitate to contact us.
0
The information contained in this manual is subject to change without notice.
This manual is the copyright of Jünger Audio. All reproduction and copying, other than for legal owner’s
personal use, or disclosure of part or whole to a third party, is not allowed without prior written
authorization by Jünger Audio. © Jünger Audio, Berlin 2004
1
CONTENTS
2. Function description .......................................….
2.1 Basic description ...........................................
2.2 Block diagram .............................................
2.3 Audio signal processing ................................
2.3.1 Gain .......................................................
2.3.2 Setting the matrix ..................................
2.3.3 Fader function ....................................…
2.3.4 Delay ……………………………………..
2.3.5 Transparent mode ………………………
2.4 Level display ................................................
2.5 Remote system ................…………..............
3. Installation .........................................................
3.1 Unpack the unit ...........................................
3.2 Power supply ................................................
3.3 Connections ...........................…...................
3.4 Rack mounting ..........................…................
3.5 Operation safety ..........................……..........
3.6 Synchronization of digital output ..….............
3.7 Remote Control ..................……...................
3.7.1. GPI Remote Control ......…….............
3.7.2. Tally Out .............………....................
3.7.3. Serial Remote Control .......…….........
4. Location of parts and controls ............………......
4.1 Front panel ......................……......................
4.2 Rear panel ...........................………..............
4.3 Switches and jumpers for configuration ........
4.4 Selection of SDI Split Mode ......…….............
4.5 Configuration of SDI interface…....................
2-1
2-1
2-2
2-3
2-3
2-3
2-3
2-3
2-3
2-4
2-4
3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-3
3-3
3-4
3-5
4-1
4-1
4-2
4-3
4-4
4-4
5. Setup ..……..............................................................................
5.0 Description of setup operation ...........................................
5.1 Starting and selection of edit menus ..................................
5.2 Main display .......................................................................
5.3 Adjustment of setup parameters .........................................
5.4 Storage of presets .............................................................
5.5 Edit selection menu …………………………………………..
5.6 Input setup menu ...............................................................
5.7 Output setup menu ............................................................
5.8 Fade time …………………………………………………….
5.9 Basic settings .....................................................................
6. Operation .................................................................................
6.0 Description of operation .....................................................
6.1 Working with presets .........................................................
6.2 Recall of presets ................................................................
7. Boot display and trouble shooting ............................................
7.1 Boot display .......................................................................
7.2 Error messages and trouble shooting ................................
7.3 Initialization the unit ............................................................
8. Application notes ......................................................................
8.1 B40 series with SDI interface .............................................
8.2 Basic working modes with SDI ...........................................
8.3 Remote control with brc ....................................................
9. Technical specifications ...........................................................
10. Warranty and service information ...........................................
5-1
5-1
5-2
5-3
5-3
5-3
5-4
5-4
5-4
5-5
5-5
6-1
6-1
6-2
6-2
7-1
7-1
7-1
7-2
8-1
8-1
8-1
8-3
9-1
10-1
2. FUNCTION DESCRIPTION
FUNCTION DESCRIPTION
The programmable digital audio toolbox b43 is a professional
studio device for simple processing of 4 digital audio channels.
It is easy to change, to process and to rearrange up to 4 signals
with the audio toolbox b43. Level corrections for stereo or quad
mixes, channel swapping, fades - efficient and fast done with the
toolbox b43. It is not necessary to use a production mixer for
duplication, dubbing or simple editing - b43 has the functionality.
The four channel configuration matches the audio capability of
Digital VTR's. B43 can be used as remotable and programmable
audio breakout box in digital video systems.
The unit is easy to operate and requires only a limited number of
settings for fast and efficient audio production.
• 4 channel programmable digital audio toolbox
• user friendly preset and recall system
• 4 x 4 mix-matrix
• input and output gain control, automated fader function
• audio delay, level/overload display
• pairwise bit transparent mode input to output
• extern sync mode, AES/EBU or VIDEO (or SDI if
optional SDI-interface is present)
• RS-422 interface for serial remote
• GPI interface for parallel remote control, tally output
2
2.1
BASIC
DESCRIPTION
operation manual b43, chapter 2 -Function description- page 2-1
2. FUNCTION DESCRIPTION
2.2
BLOCK DIAGRAM
page 2-2 operation manual b43, chapter 2 -Function description-
2. FUNCTION DESCRIPTION
All signal processing is done in the digital domain by Texas
Instruments floating point signal processors. The use of 32 bit
word length for calculation ensures that there is no deterioration
in signal quality, even if an audio signal with a maximum word
length of 24 bit is input into the processing of the unit.
GAIN means linear amplification of input or output signals. The
input or output gain can be changed in steps of 0.1 dB , within a
range from -15...+15 dB.
Adjustment of GAIN is channel independent.
Setting the matrix means to set or to reset the crosspoints of the
4x4 mix-matrix. Because this matrix is a mix-matrix each output
line can be the sum of up to all four input lines. Amplifying and
mixing the input signals can make OVERLOAD! If an Overload
appears, the output level display shows the corresponding
„OVER“-message.
A fade is started automatically every time, if a matrix point is
modified. This fade is a linear change of input gain from current
value to infinity (or the other way) at a specific time (FADE
TIME).
fader function each recall of preset is starting fade in or fade
out depending on matrix setting
set of matrix point > fade in
reset of matrix point > fade out,
If at an output line the input crosspoints of different channels
become set and reset at the same time a linear crossfade is
made between these input signals.
FADE TIME adjustable fade time (0 .. 5 sec)
For each input channel there is an audio delay available. The
delay is adlustable between 0 and 160 ms in steps of 1 ms.
The delay can be used to give a correction if the audio signals
are in the right timing.
In case that the input signal (audio pair 1/2 or/and 3/4) is not
audio (but AC-3, Dolby E, MPEG..) the input can be feeded
directly to the related output bit transparent (no bit changes). The
unit is switching to transparent automatically if “non audio” flag
in the Channel Status Bit of the AES signal is set. Otherwise
transparent mode can be set manually by the user.
2.3
AUDIO SIGNAL
PROCESSING
2.3.1
GAIN
2.3.2
SETTING THE
MATRIX
2.3.3
FADER FUNCTION
2.3.4
DELAY
2.3.5
TRANSPARENT
MODE
operation manual b43, chapter 2 -Function description- page 2-3
2. FUNCTION DESCRIPTION
2.4
LEVEL DISPLAY
There are two level displays available - input level and output
level display (For all four channels). The audio level is
displayed as bargraph. This display is not scaled. Two
segments are appr. 2dB of audio level. The level display gives
information about the existence and the size of the audio
signals.
2.5
REMOTE SYSTEM
i 3: IIII i 4: IIIIIIIIII
Only the output level display can show an overload. If an
overload appears, the output level display shows the
corresponding „OVER“-message.
The digital audio toolbox b43 is fitted with an serial remote
interface in RS-422 format.
Every device needs a device address to be registered in a
remote system. The address can be selected with the ADDR
switch on the rear panel. 16 addresses are selectable (0..F).
The changed address is valid with next power-on reset.
Up to 16 toolboxes b43 can be controlled from one remote panel.
Device model name and device address are to recognize using
the remote protocol of serial remote interface by an automation
system or by PC. With it various boxes can be combined in one
remote system or remote chain. However a maximum of 16
devices per model can be controlled in one chain.
I 1: IIIIIII i 2: IIIIIII
I = input level O = output level
page 2-4 operation manual b43, chapter 2 -Function description-
3. INSTALLATION
INSTALLATION
The digital audio toolbox b43 was carefully packed in the factory
and the packaging was designed to protect the equipment from
rough handling. Please examine carefully the packaging and its
contents for any signs of physical damage, which may have
occured in transit.
The digital audio toolbox b43 is a device under the safety
category Schutzklasse 1 in keeping with the VDE 0804
standards and may only used with power supply installations
built according to regulations.
Check the voltage details printed at the rear panel are the same
as your local mains electricity supply.
The digital audio toolbox b43 is equipped with standard
connectors (see also chapter 3).
Before connecting the digital audio toolbox b43 switch the power
off at all connected units.
The digital audio toolbox b43 is made as standard 19“ unit (EIA
format). It occupies 1 RU (44 mm height) space in a rack.
Please allow at least addititonal 3“ depth for the connectors on
the rear panel.
When installing the unit in a 19“ rack the rear side of the unit
needs some support, especially for mounting in flight cases.
The digital audio toolbox b43 should not be installed near units
which produce strong magnetic fields or extreme heat. Do not
install the filter processor directly above or below power
amplifiers.
If, during operation, the sound is interrupted or displays no longer
illuminate, or if abnormal odor or smoke is detected immediately
disconnect the power cord plug and contact your dealer or
Jünger Audio.
3
3.1
UNPACK THE UNIT
3.2
POWER SUPPLY
3.3
CONNECTIONS
3.4
RACK MOUNTING
3.5
OPERATION
SAFETY
Operation manual b43, chapter 3 -installation- page 3-1
3. INSTALLATION
3.6
SYNCHRONIZATION
OF
DIGITAL OUTPUT
The digital audio toolbox b43 has a digital signal output only. To
the problem-free combination of following digital devices, the
digital signal processing can be locked to an external clock
reference. The selection of the corresponding input is made in
the SYNC MODE menu. If the chosen sync input is connected
with the sync signal, this signal is used for synchronization
automatically. The digital output signal can be clocked with the
following clock frequencies:
CH 1/2 locks with the clock frequency of the input signal at
digital input CH 1/2 (AES/EBU, 48 kHz)
EXT SYNC locks with the clock frequency at the
external sync input (AES/EBU, 48 kHz)
VIDEO locks with the clock at the Video sync input
(internal 48 kHz)
SDI VIDEO locks with the clock at the SDI input
(internal 48 kHz)
Both digital outputs CH 1/2 and CH 3/4 are locked with same
clock frequency.
Note: SDI sync is available only if SDI interface is installed!
page 3-2 Operation manual b43, chapter 3 -installation-
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