junger b40 User manual

DIGITAL
AUDIO
TOOLBOX
model b40
operations manual
rev. 3.1
Justus-von-Liebig-Straße 7, 12489 Berlin, Germany
Telefon: [phone] - 0 Fax: [phone] – 46
www.junger-audio.com

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 1998
FOREWORD
Thank you for buying and for using the 4-channel Digital Audio
Toolbox b40.
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.
0
Please read this manual carefully to ensure you have all the
information you need to use the 4-channel Digital Audio Toolbox
b40.
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, setting-
up or using the b40, please do not hesitate to contact us.

CONTENTS
1
2. Location of parts and controls ............................................. 2-1
2-1
2-3
2-4
2-5
2-5
2.1 Front panel .....................................................................
2.2 Rear panel .....................................................................
2.3 Switches and jumpers for configuration ..........................
2.4 Selection of SDI Split Mode ............................................
2.5 Selection of SDI audio group ...........................................
3. Installation ........................................................................... 3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-3
3-3
3-4
3-5
3-6
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 ..........................................
3.8 Block diagram .................................................................
4-1
4-1
4-2
4-2
4-3
4-3
4-3
4-3
4-4
4-4
4. Operation .............................................................................
4.1 Mode .............................................................................
4.2 Recalling and storing of presets .....................................
4.3 Mono switching ................................................................
4.4 Ø-Reverse ......................................................................
4.5 Input gain ........................................................................
4.6 Matrix ...............................................................................
4.7 Output gain .....................................................................
4.8 Monitor .............................................................................
4.9 Bypass .............................................................................

5-1
5-1
5-1
5-2
5. Boot display and trouble shooting ............................................
5.1 Boot display .......................................................................
5.2 Error messages and trouble shooting ................................
5.3 Initialization the unit ............................................................
6-1
6-1
6-1
6-3
7-1
8-1
6. Application notes ......................................................................
6.1 B40 series with SDI interface .............................................
6.2 Basic working modes with SDI ...........................................
6.3 Remote control with brc4x ..................................................
7. Technical specifications ...........................................................
8. Warranty and service information ...........................................

2. LOCATION OF PARTS AND CONTROLS
Operation manual b40, chapter 2 -control elements and displays- page 2-1
LOCATION OF PARTS AND
CONTROLS
All control elements gives direct access.
In menu modes the alphanumeric display above the related
button or rotary knob is showing the specific function.
fig. 1: front panel b40
INPUT selection of digital input
SYNC selection of sync input
PRESET 1...4 storage and recall of presets 1...4
Ø-REV 180° phase reverse for ch1/2 or 3/4
MONO mono switching of ch1/2 or ch3/4
CH 1...4 selection (push) and adjustment (turn)
of input gain (GAIN)
2.1.
FRONT PANEL
2
Output level
display
Preset buttons Input level
display
CONTROL
ELEMENTS
mode
input 1/2
input 3/4
input gain
Output level
meter selection
Output
gain
Mains
switch
Input/sync
selection
Ø-Rev, Mono switching
Input gain
Mix-Matrix

2. LOCATION OF PARTS AND CONTROLS
Operation manual b40, chapter 2 -control elements and displays- page 2-2
INPUT 1...4 selection of input channel matrix
and then
OUTPUT 1...4 selection of output channel
to set or reset connecting points of the matrix
output gain
CH 1...4 selection (push) and adjustment (turn)
of output gain
monitor
OUTPUT selection of output level display
BYPASS switches bypass on and off

2. LOCATION OF PARTS AND CONTROLS
2.2.
REAR PANEL
DIGITAL
OUTPUTS
DIGITAL
INPUTS
SYNC IN
BASIC
SETTINGS
SDI IN-/
OUTPUT
SERIAL
REMOTE
IN/OUT
GPI REMOTE
IN/OUT
fig. 2: rear panel b40
POWER INPUT
IEC mains input connector 230 V, 50 Hz (UK: 240 V, 50 Hz; JAPAN: 100 V,
60Hz; USA: 127 V, 60 Hz) with integrated fuse
REMOTE
serial remote interfacee RS-422
connector: 9pin SUB-D, input - male, output - female
GPI
paralle remote interface
TALLY-out TTL-level
connector: 9pin SUB-D, male
GPI-in TTL-level
connector: 9pin SUB-D, female
SYNC
AES/EBU input for ext. sync signal (AES 3 format, 75 Ohm, unbal)
connector: BNC socket
VIDEO input for video sync signal (blackburst, 75 Ohm, unbal)
connector: BNC socket
SDI IN / OUT (only for SDI-Version!)
Input/output for serial digital video (ITU-R BT.601, SMPTE 272M-A)
Format: • Video: 270 Mb/s, 525/625 line rate, 75 Ohm,
BNC socket
DIGITAL IN
input for AES/EBU standard format
connector: XLR female panel jack
1- ground, 2-3 signal, balanced
connector: BNC socket 75 Ohm, unbalanced
DIGITAL OUT
output for AES/EBU standard format
connector: XLR male panel jack
1- ground, 2-3 signal, balanced , 4 Vpp
connector: BNC socket 75 Ohm, unbalanced, 0.5V pp
hardware bypass: relais are connecting related inputs and outputs if power
is failed
Operation manual b40, chapter 2 -control elements and displays- page 2-3

2. LOCATION OF PARTS AND CONTROLS
Some basic settings are to select by switches on the rear panel
or by switches and jumpers at the internal circuit boards of the
unit. These settings can occur general changes for operation
and should made by qualified engineering staff only.
Rear panel
Following switches in the REMOTE- field at rear panel are used
for configuration of the unit.
SDI Bypass switches SDI bypass on/off (see also 3.10)
(only for SDI version!)
LOCAL Setting of FRONT PANEL operation mode
ENABLE Unit can be controlled by front panel and by
serial remote interface.
DISABLE Unit can be controlled only by using serial remote
interface. Front panel is locked.
Note: DISABLE is only activated if serial remote
control is connected!
ADDR
Selection of the device address for serial
remote, 16 device addresses selectable
Note: Within a line of remote controlled units every
device needs a different address! The selected
2.3
SWITCHES AND
JUMPERS FOR
CONFIGURATION
address is valid after next power-on reset of the unit.
Internal
To set any internal jumper or switches it is necessary to open
the unit.
PLEASE DO NOT MAKE ANY ALTERATIONS WITH THE
MAINS STILL CONNECTED TO THE UNIT!
Loosen the screws on the top cover and remove. Then you can
see all jumper and switches as shown in the drawing below.
After setting of jumper or switches reassemble the unit in
opposite order.
Operation manual b40, chapter 2 -control elements and displays- page 2-4

2. LOCATION OF PARTS AND CONTROLS
Main
board
SDI
Interface
J1
SDI Split
SW1&2- SDI group
selection and others
B4x
Download
switch
Units with SDI interface can be used in SDI split mode:
Audio in path SDI input > AES output
Audio out path AES input > dsp processing > SDI output
(see also 3.9)
dsp
processing
AES
out
SDI
out
SDI
in
B4x
Split Mode
AES
in
External device
AES
in
AES
out
The selection of split mode (SDI DIRECT) is made by setting
jumper J1 on main board of the unit.
The 4-channel processors of b40 series fitted with SDI-interface
are compatibel with the standard SMPTE 272M-AB. They
support 48 kHz synchronous audio sampling with 20 bit word
length.
2.4
SELECTION OF
SDI SPLIT MODE
2.5
CONFIGURATION
OF SDI INTERFACE
The standard allows up to four groups each of four mono audio channels.
(Usually used by most of D-VTR's and other equipment is Group 1 with 48
kHz synchronous sampling.)
Group selection and other settings are to configure with
switches on the SDI board as described following:
Operation manual b40, chapter 2 -control elements and displays- page 2-5

2. LOCATION OF PARTS AND CONTROLS
Settings on SDI interface board:
Group selection for receiver: valid anytime
TRANSMITTERRECEIVER
TX-GR0
TX-GR1
CASCADE
PACK
TEST
RX-GR0
RX-GR1
SWAP0
SWAP1
EXCHNG
SDI-
Interface
for transmitter: valid only in PACK or in CASCADE
mode
GR0 GR1
group 1 - -
group 2 x -
group 3 - x
group 4 x x
x – switch is set to ON
Channel swap for receiver:
SWAP0 swaps channel 1&2
SWAP1 swaps channel 3&4
EXCHNG swaps pairs 1/2&3/4
PACK
- generates a new audio frame structure (is deleting all former existing
embedded audio!)
- is embedding selected TX group as first audio group within SDI stream
- necessary if no audio was embedded before
CASCADE
- generates a new audio group as selected (TX group) within existing
frame structure (is overwriting all data of this group if it was already
existing)
- necessary if a new group should be embedded and if audio in other
groups was embedded previously
- is matching ideally the structure which was generated by PACK mode
(It is recommended to use PACK mode for generating audio
structure and embedding the first group before using CASCADE to
embedd further audio groups!)
Please note: As long as PACK and CASCADE are not set the embedder is
inserting in the group which is determined by RX group selection. The
embedder is replacing the existing audio if it was embedded previously.
If group 1 is selected and no audio structure is existing at the input the
embedder is switching to PACK mode for group 1automatically!
If group 2,3 or 4 is selected and no audio structure is existing for this group
the embedder is not inserting audio data (use PACK or CASCADE!).
Test not in use
Operation manual b40, chapter 2 -control elements and displays- page 2-6

3. INSTALLATION
Operation manual b40, chapter 3 -installation- page 3-1
INSTALLATION
3.1
UNPACK THE UNIT
3.2
POWER SUPPLY
3
The digital audio toolbox b40 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 b40 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 b40 is equipped with standard
connectors (see also chapter 3).
Before connecting the digital audio toolbox b40 switch the power
off at all connected units.
The digital audio toolbox b40 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 b40 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
CONNECTIONS
3.4
RACK MOUNTING
3.5
OPERATION
SAFETY

3. INSTALLATION
Operation manual b40, chapter 3 -installation- page 3-2
3.6
SYNCHRONIZATION
OF
DIGITAL OUTPUT
The digital audio toolbox b40 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 with
the SYNC button in MODE field. 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)
EXT SYNC locks with the clock frequency at the
external sync input (AES/EBU)
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.
Pushing the SYNC button switches sync input. Selected sync
input is marked by lighting LED. Note: SDI sync is available only
if SDI input is active! If SDI sync is selected only SDI input LED
lits. All LED’s in sync display are switched off!

3. INSTALLATION
3.7
REMOTE
CONTROL
3.7.1
GPI REMOTE
CONTROL
(PARALLEL
REMOTE)
The digital audio toolbox b40 can be remote-controlled by
means of parallel GPI contacts.
use : remote-controlled changeover of presets
connector: D-SUB 9pin, female
Pin assignments
5 1
9 6
Pin Signal name Logic I/O Functions
1 PRESET1 L I call preset1
2 PRESET2 L I call preset2
3 PRESET3 L I call preset3
4 PRESET4 L I call preset4
5 FACTORY-
PRESET
L I call factory-preset,
not alterable
6 BYPASS L I bypass, for the time of
low level
7 not used
8 not used
9 GROUND Ground
Electrical specification:
GPI input On: connection to ground
Off: open
signal input level L: 1,5V or less, min. 50ms
level H: 3,5V or more
min. 50 ms
+1,5V
+3,5V
Operation manual b40, chapter 3 -installation- page 3-3

3. INSTALLATION
3.7.2
TALLY OUT
The digital audio toolbox b40 can signal specific device statuses
via parallel Tally lines.
use: Control of the remote-controlled changeover of
presets
connector: D-SUB 9pin, male
Pin assignments
5 1
9 6
Pin Signal name Logic I/O Functions
1 PRESET1 H O preset1 recalled
2 PRESET2 H O preset2 recalled
3 PRESET3 H O preset3 recalled
4 PRESET4 H O preset4 recalled
5 OVERLOAD H O overlevel at digital output
ch1...4
6 BYPASS H O bypass on
7 not used
8 NO SYNC H O no or invalid sync signal
9 GND Ground
Electrical specification:
signal input level L: 1,5V or less
level H: 3,5V or more
TALLY OUT
max. 25 mA
+5 V
110 Ohm
Operation manual b40, chapter 3 -installation- page 3-4

3. INSTALLATION
3.7.3
SERIAL REMOTE
CONTROL
(RS-422)
The digital audio toolbox b40 can be remote-controlled by
means of serial remote RS-422.
use : remote-controlled changeover of presets
protocol: available on request
connector: D-SUB 9pin, input - male
output - female
Pin assignments
The cable is wired 1:1 completely, the shield of the cable must be connected
on both ends!
5 1
9 6
REMOTE IN
Pin Signal name Functions
1 DSR + out Data set ready
2 DSR - out
3 SENSE in Interrogation Remote
4 RXD + out Receive data
5 RXD - out
6 DTR + in Data terminal ready
7 DTR - in
8 TXD + in Transmit data
9 TXD - in
REMOTE OUT
Pin Signal name Functions
1 DSR + in Data set ready
2 DSR - in
3 GND GND
4 RXD + in Receive data
5 RXD - in
6 DTR + out Data terminal ready
7 DTR - out
8 TXD + out Transmit data
9 TXD - out
Electrical specification:
signal in-/outputs TTL-level
Operation manual b40, chapter 3 -installation- page 3-5

3. INSTALLATION
3.8
BLOCK DIAGRAM
Operation manual b40, chapter 3 -installation- page 3-6

4. OPERATION
operation manual b40, chapter 4 -Operation- page 4-1
OPERATION
4.0
DESCRIPTION OF
OPERATIONS
4
The use of the digital audio toolbox b40 is very easy.
The setup or the programming of the digital audio toolbox b40
is made by adjustment of various parameters and settings.
The description is made related to the functional blocks on the
front panel.
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
mode
recalling and storing of presets
mono
Ø-rev
input gain
matrix
output gain
monitor
bypass
Following syntax is used:
SYMBOL ACTIVITY
describes
how to use
button or
rotary knob
turn
p
ush + turn
p
ush
describes
action or function of
button or
rotary knob

4. OPERATION
Selection of digital signal input
INPUT selection of digital signal input
(SDI is for SDI-version available only!)
Selection of sync signal input
SYNC selection of sync-signal input
1/2 unit is synchronized with AES input
channel 1/2 (AES 48kHz)
EXT unit is synchronized with AES input
signal at external sync input
VIDEO unit is locked to video signal at video
input (with 48kHz)
SDI unit is locked to SDI signal at SDI
input (with 48kHz)
Note: SDI sync is available only if SDI input is active! If SDI sync is selected
only the SDI input LED lits. All LED’s in sync display are switched off!
All adjusted parameters of Ø-REV, MONO, INPUT GAIN,
MATRIX and OUTPUT GAIN can be stored into presets.
Recall of presets
preset buttons
1...4 recall of preset 1...4
Storage of presets
preset buttons
1...4 after appr. 3 sec. of pushing continously a
preset button all current adjustments will be
stored into this preset, yellow LED blinks
two times.
Note: All former stored preset values are overwritten at the
moment of new storage into this preset! Just as after
initialization of the unit all presets are overwritten with factory
setups.
The MONO function is adding together both input channels 1/2 or
3/4 and distributes the mix signal to both channels. There is no
level reduction or correction included!
4.1
MODE
push
push
4.2
RECALLING AND
STORING OF
PRESETS
push
push
+hold
4.3
MONO
operation manual b40, chapter 4 -Operation- page 4-2

4. OPERATION
The Ø-REV function turns the phase of the input signals around
180°. Repeated pushing the REV button switches the following
modes:
Ø-REV CH 1 (or CH3)
Ø-REV CH 2 (or CH4)
Ø-REV CH 1+2 (or CH3+4)
Red LED’s gives information about Ø-REV status.
Adjustments for MONO and Ø-REV will be stored into the
presets.
INPUT GAIN means linear amplification of input signals. The
input gain can be changed in steps of 0.1 dB , within a range
from -15...+15 dB.
Adjustment of GAIN is channel independent. GAIN adjustment is
stored into the presets.
GAIN
selection of channel
GAIN
adjustment of gain for selected channel
The matrix is to configure with the INPUT buttons and the
OUTPUT buttons.
1. selection of input channel by pushing related INPUT button
2. selection of requested output channel by pushing related
OUTPUT button.
This procedure is to repeat up to all necessary connection are
routed.
The configuration of the matrix is stored into the presets.
After mixing together several input channels output level will be
increased. If excessive level at the output occurs one has to
reduce output level by reducing the OUTPUT GAIN (see also
4.8 Monitor). The output gain can be changed in steps of 0.1 dB
, within a range from -15...+15 dB.
Adjustment of GAIN is channel independent. OUTPUT GAIN
adjustment is stored into the presets.
4.4
Ø-REV
4.5
INPUT GAIN
push
turn
4.6
MATRIX
4.7
OUTPUT GAIN
GAIN
selection of channel
GAIN
adjustment of gain for selected channel
push
turn
operation manual b40, chapter 4 -Operation- page 4-3

4. OPERATION
operation manual b40, chapter 4 -Operation- page 4-4
OUTPUT buttons 1/2 or 3/4 are switching the related output
signal to the meter display in this section.
The meter display does not allow a precise adjustment, but it
does give an indication of the existence and the level of digital
output signals.
If excessive level at the output occurs (if digital audio samples
at the maximum permissable positive or negative sample value
occur at the digital output) then the red clip-LED at the
extreme right-hand end of the level meter lights up and indicates
overloads which are present in the output signal.
4.8
MONITOR
p
ush
1/2 or 3/4 selection of output meter signal
4.9
BYPASS
BYPASS is bypassing the signal processing of the unit.
BYPASS is working for all configurations.
p
ush
BYPASS switching bypass on or off
display: red LED is lighting