junger B45 User manual

4ch digital audio delay
b45
release 3.0

FOREWORD
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
Thank you for buying and for using the 4-channel Digital Audio
Delay B45.
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 Delay
B45.
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 b45, please do not hesitate to contact
us.
0
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

CONTENTS
1
2. Function description ...........................................…….............
2-1
2-1
2-2
2-3
2-4
2-4
2-4
2-5
2-5
2-6
2-6
2.1 Basic description ...........................................…….................
2.2 Block diagram ..............................................…….................
2.3 Remote system ...............................................................…..
2.4 Link function / channel configuration .........................…........
2.5 Display of delay time .......................................................…..
2.6 Video format ....................................................................…..
2.7 Auto tracking .................................................................... …
2.7.1 Auto tracking by video sync ...............................……....
2.7.2 Auto tracking by TTL control signal ........................……
2.7.3 Auto tracking with offset ..........................................……
3. Installation ............................................................................
3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-3
3-3
3-4
3-5
3.1 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 .................................……............
4-1
4-1
4-2
4-3
4-4
4-4
4-5
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 Auto Tracking mode ......................................
4.5 Selection of SDI Split Mode ..............................…….............
4.6 Selection of SDI audio group ...........................……..............

5-1
5-1
5-2
5-2
5-3
5-3
5-4
5. Setup ..............................................……..............……………....
5.0 Description of setup operation ...........................................
5.1 Starting and selection of edit menus ..................................
5.2 Main display .......................................................................
5.3 Adjustment of delay time setup parameters .......................
5.4 Storage of presets .............................................................
5.5 Menu overview ..................................................................
6-1
6-1
6-2
6-2
6-2
7-1
7-1
7-1
7-2
8-1
9-1
6. Operation ............................………….......................................
6.0 Description of operation .....................................................
6.1 Working with presets .........................................................
6.2 Recall of presets ................................................................
6.3 Adjustment of delay time ...................................................
7. Boot display and trouble shooting ............................................
7.1 Boot display .......................................................................
7.2 Error messages and trouble shooting ................................
7.3 Initialization the unit ............................................................
8. Technical specifications ...........................................................
9. Warranty and service information ...........................................

2. FUNCTION DESCRIPTION
FUNCTION DESCRIPTION
2.1
BASIC
DESCRIPTION
2
The programmable digital audio delay b45 is a professional
studio device for delaying of 4 digital audio channels.
Digital audio delay b45 is working with a new processing
algorithm developed by Jünger Audio. It is possible to change
the delay time "glitch free" - without changing of pitch, without
noises or clicks. Readjustment of audio delay time under live
conditions - inaudible and fast done with the digital audio delay
b45!
The four channel configuration matches the audio capability of
Digital VTR's. B45 can be used as remotable and programmable
audio delay in digital video systems.
The unit is programmable,easy to operate and requires only a
limited number of settings for fast and efficient audio processing.
• 4 channel programmable digital audio delay
• "glitch free" changing of delay times
• auto tracking function
• up to 1,2 s delay time per channel
• user friendly preset and recall system
• external sync mode, AES/EBU or VIDEO
• RS-422 interface for serial remote
• GPI interface for parallel remote control input, tally output
operation manual b45, chapter 2 -Function description- page 2-1

2. FUNCTION DESCRIPTION
2.2
BLOCK DIAGRAM
page 2-2 operation manual b45, chapter 2 -Function description-

2. FUNCTION DESCRIPTION
The digital audio delay b45 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 preselected address is valid with next power-on reset.
Up to 16 delays b45 can be controlled from one remote panel
brc4x.
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.
2.3
REMOTE SYSTEM
operation manual b45, chapter 2 -Function description- page 2-3

2. FUNCTION DESCRIPTION
2.4
LINK FUNCTION /
CHANNEL
CONFIGURATION
The LINK function is used for channel configuration regarding
delay time adjustment. It eables convenient setting of delay time
for a group of audio channels. Following links or channel
configuration are possiblel:
CH1 + CH2 + CH3 + CH4 (all 4 channels linked)
CH1 + CH2 CH3 + CH4 (two linked pairs)
CH1 CH2 CH3 CH4 (all channel independent)
The LINK function is a basic setting and is valid for all presets.
All linked channels are working with the same delay time.
Adjustment of delay time is valid for linked channels at the same
time.
The display is showing delay time for all four presets (not more
for individual channels) if all four channels are linked (P1 ...P4).
2.5
DISPLAY OF DELAY
TIME
The adjusted delay time can be displayed in various time scale
formats. The time scale format is to select in DELAY menu. The
resolution for the adjustment is changing with selection of
specific time scale format. For some formats (f.i. frames)
adjustment is possible in larger steps only.
Time scale format can be different for different presets. Time
scale format will be stored by storing adjustments into the preset.
2.6
VIDEO FORMAT To get the right delay time (as absolut time value) it is necessary
to set the correct video format (PAL/NTSC). The video format is
to select in setup menu.
If the unit is synchronized to video reference the selection of
video format is done automatically independent of the video
format selection in setup menu.
page 2-4 operation manual b45, chapter 2 -Function description-

2. FUNCTION DESCRIPTION
2.7
AUTO TRACKING
The digital audio delay b45 can be used in Auto Tracking Mode.
Auto Tracking means the control of current delay time by specific
generated control signal. Together with the „glitch free“ changing
of delay time Auto Tracking works without any noises or
detoriation in the audio signal.
The control signal for auto tracking can be generated in different
ways. Depending on the generation of the control signal it is
causing a different maximum length of auto tracking delay time.
There are two basic methods to generate the control signal. First
one is the comparison of two video signals. The video program
signal (VIDEO TRACKING) will be compared with video
reference (VIDEO SYNC). Difference in time between both
vertical intervals is used as auto tracking delay time. Second way
is to use a TTL signal. The length in time of the pulse signal is
measured and will be used as current delay time.
Selection of auto tracking mode is done by setting jumper J2 on
tracking board (see also 4.4).
The digital audio delay b45 can generate the auto tracking
control signal by comparison of two video signals. To calculate
the auto tracking delay time the algorithm compares the video
program signal (VIDEO TRACKING) with video reference
(VIDEO SYNC). The difference in time between both vertical
intervals is used as auto tracking delay time. The maximum
difference and in this way the maximum delay time is one video
frame (PAL = 40 ms).
VIDEO
SYNC
VIDEO
TRACKING
t
vt - tracking delay time
t = tvt
2.7.1
AUTO TRACKING BY
VIDEO SYNC
operation manual b45, chapter 2 -Function description- page 2-5

2. FUNCTION DESCRIPTION
2.7.2
AUTO TRACKING
BY TTL CONTROL
SIGNAL
The digital audio delay b45 can generate the auto tracking
control signal by using a TTL control signal. To calculate the auto
tracking delay time the detection circuit is measuring the HIGH
period of the TTL input signal. The length in time of the HIGH
period is used as delay time for auto tracking. The maximum
delay time shouldn’t be more as the maximum memory capacity
of the delay (see technical specifications). Otherwise it produces
a memory overflow and an error message will be displayed.
Every new positive pulse at TTL input is measured and is
overwriting the last calculated value.
page 2-6 operation manual b45, chapter 2 -Function description-
VIDEO
SYNC
VIDEO
TRACKING
TTL PULSE
t
vt - tracking delay time
t = tvt
2.7.3
AUTO TRACKING
WITH OFFSET
There is the possibility to activate auto tracking even if a fixed
delay time is preadjusted. The already adjusted delay time is an
offset to the auto tracking delay time. Please note that the overall
delay time consisting of delay offset and auto tracking delay time
shouldn’t be more as the maximum memory capacity of the
delay (see technical specifications). Otherwise it produces a
memory overflow and an error message will be displayed. The
use of the unit is blocked to prevent deteriorated audio signals at
digital output.
tvmax = maximum memory capacity per channel
auto tracking video with offset, error message overflow
auto tracking video with offset
auto tracking TTL with offset, error message overflow
Note! In auto tracking TTL auto tracking delay time can be
longer as one videoframe!

3. INSTALLATION
INSTALLATION
3.1
UNPACK THE UNIT
3.2
POWER SUPPLY
3
The digital audio delay b45 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 delay b45 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 delay b45 is equipped with standard connectors
(see also chapter 3).
Before connecting the digital audio delay b45 switch the power
off at all connected units.
The digital audio delay b45 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 delay b45 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
Operation manual b45 chapter 3 -installation- page 3-1

3. INSTALLATION
3.6
SYNCHRONIZATION
OF
DIGITAL OUTPUT
The digital audio delay b45 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 input is active!
page 3-2 Operation manual b45, chapter 3 -installation-

3. INSTALLATION
3.7
REMOTE
CONTROL
3.7.1
GPI REMOTE
CONTROL
(PARALLEL
REMOTE)
The Digital audio delay b45 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 not used
6 BYPASS L I bypass on
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 b45 chapter 3 -installation- page 3-3

3. INSTALLATION
3.7.2
TALLY OUT The Digital audio delay b45 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 LIMITER H O limiter on
6 BYPASS H O bypass on
7 SYNC ch1/2 H O input 1/2 locked
8 SYNC ch3/4 H O input 3/4 locked
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
page 3-4 Operation manual b45, chapter 3 -installation-

3. INSTALLATION
3.7.3
SERIAL REMOTE
CONTROL
(RS-422)
The Digital audio delay b45 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 b45 chapter 3 -installation- page 3-5

4. LOCATION OF PARTS AND CONTROLS
LOCATION OF PARTS AND
CONTROLS
All control elements give direct access.
In menu modes the LCD-panel shows specific functions.
4.1.
FRONT PANEL
preset
buttons setup
section
4
CONTROL
ELEMENTS
Adjustment knob,
select und escape
buttons
mains
switch
fig1: front panel b45
PRESET 1...4 selection of presets 1...4
CONTROL selection (push) and adjustment (turn)
of parameters
SELECT selection of menus (for adjustment of
parameters)
EXIT exit of adjustment menus and return to
level display
Operation manual b45, chapter 4 -location of parts and controls- page 4-1

4. LOCATION OF PARTS AND CONTROLS
4.2.
REAR PANEL
DIGITAL
INPUTS
SYNC IN DIGITAL
OUTPUTS
BASIC
SETTINGS
SDI IN-/
OUTPUT
SERIAL
REMOTE
IN/OUT
GPI REMOTE
IN/OUT
fig. 2: rear panel b42
POWER INPUT
IEC mains input connector 230 V, 50 Hz (UK: 240 V, 50 Hz; JAPAN: 100 V,
60 Hz; USA: 127 V, 60 Hz) with integrated fuse
REMOTE
serial remote interface 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)
with embedded audio
Format: 270 Mb/s, 525/625 line rate, 75 Ohm,
connector: 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
page 4-2 Operation manual b45, chapter 4 -location of parts and controls-