Albalá Ingenieros, S.A. DAB2008C01 User manual

Brand
Albalá Ingenieros, S.A.
Model
DAB2008C01
Type
User manual
DAB2008C01
ANALOG AUDIO OUTPUT FRONT-END FOR THE AUDIOFLEX BUS OF THE
TL2000 TERMINAL LINE
Version 1.0
Albalá Ingenieros, S.A.
Medea, 4 - 28037 Madrid - Spain
20 April 2016 - © Albalá Ingenieros S.A. - All rights reserved
DAB2008C01
DAB2008C01
ANALOG AUDIO OUTPUT FRONT-END FOR THE AUDIOFLEX BUS OF THE TL2000
TERMINAL LINE
Version 1.0
1. DESCRIPTION ...................................................................................................................... 5
1.1. The DAB2008C01 ........................................................................................................................... 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. Installing the module in the mounting frame ................................................................... 12
3.5. Interconnection ............................................................................................................................ 12
3.5.1. Analog audio connections ............................................................................................... 13
4. OPERATION ...................................................................................................................... 15
4.1. Front panel description .............................................................................................................. 15
4.2. Functional description ............................................................................................................... 16
4.3. Module remote control and supervision ............................................................................. 18
4.3.1. Details of the DAB2008C01 registers .......................................................................... 19
5. GLOSSARY ........................................................................................................................ 23
6. REGULATIONS .................................................................................................................. 25
7. VERSIONS ......................................................................................................................... 27
DAB2008C01
Albalá Ingenieros | Manual DAB2008C01
1. DESCRIPTION
1.1. The DAB2008C01
The DAB2008C01 is a module from the TL2000 family that extracts eight channels of
analog audio from the AUDIOFLEX bus.
AUDIOFLEX is an internal bus provided by the UR2000 mounting frame that is formed by
two lines: M2S (Master to Slave) and S2M (Slave to Master), that interconnect all the
slots of the frame. Each of the two lines can multiplex up to 64 channels of audio
sampled at 24 bits, 48kHz grouped in eight time slots, each of which contains eight
audio channels.
The DAB2008C01 de-multiplexes eight audio channels from one of the AUDIOFLEX bus
lines and converts them to analog with a full scale level of 22dBu. It employs 24 bit
converters operating at the 48kHz sampling frequency of the AUDIOFLEX bus.
The ADB2008C01, DAB2008C01, DDB2008C01, DEB2008C01 and IMB2000C01 were all
designed to operate together using the two lines of the AUDIOFLEX bus such that when
they are properly configured they create a multiple audio format audio switching matrix
compatible with analog audio, AES/EBU, AES67 and MADI.
The module includes an audio processing unit between the AUDIOFLEX bus and the
external connections that permits adjustment of the level and phase reversal for each of
the audio channels. The gain adjustment runs from 24 to -39dB in 0.5dB steps and can
also be muted.
In order to operate properly, the DAB2008C01 module requires a reference signal that it
takes from the internal 13.5MHz synchronization bus of the UR2000 mounting frame.
This signal can be generated by a GNSS receiver module such as the GPS2000C01 if one
is installed in the same frame or the module itself can function as the AUDIOFLEX bus
master, which is usually the case for the IMB2000C01.
It is possible to monitor the DAB2008C01 status remotely using a communications
controller module installed in the same mounting frame. In addition, certain controller
modules provide SNMP management and the ability to record events in a file including
date and time information for further analysis.
The DAB2008C01 is a TL2000 terminal line module and can be housed in a two rack unit
(2 RU) UR2000 mounting frame.
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Albalá Ingenieros | Manual DAB2008C01
1.2. Features
•Analog audio output interface for the AUDIOFLEX bus of the UR2000 mounting frame
from the TL2000 family.
•AUDIOFLEX is a data bus that is formed by two lines: M2S (Master to Slave) and S2M
(Slave to Master), that interconnect all the slots of a UR2000 mounting frame. Each of
the two lines can multiplex up to 64 channels of audio sampled at 24 bits, 48kHz
grouped in eight time slots, each of which contains eight audio channels.
• The module includes eight balanced analog audio outputs.
•The analog audio outputs are obtained by de-multiplexing eight audio channels from a
time slot of the AUDIOFLEX M2S line and converting them the analog with a full scale
level of 22dBu.
•The module includes an audio processing unit that can adjust the level and reverse the
phase of any of the audio channels.
•The module supervises the signal level of all the audio channels that it uses.
Furthermore, an overload threshold can be set so that an alarm is generated is any of
the channels surpasses the set threshold.
• Provides 16 presets for storing the module's configuration.
•Module control and supervision can be done remotely when the mounting frame is
equipped with a communications controller module.
• Low power.
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Albalá Ingenieros | Manual DAB2008C01
1.3. Block diagram
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Albalá Ingenieros | Manual DAB2008C01
DAB2008C01
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Albalá Ingenieros | Manual DAB2008C01
2. SPECIFICATIONS
Analog audio signal output
Connector Sub-D 25 pin female
Impedance 73Ω ± 1 %
Type Active balanced
Number of outputs 8
Difference between a 600Ω loaded output and an unloaded output 1 dB
Maximum output level 22 dBu
Output offset voltage <30 mV
Short-circuitable outputs Yes
Digital to analog converter
Number of bits 24
Sampling rate 48kHz free-run or locked to DCAB clock
Pass-band ripple +0,1/ -0,5 from 20Hz to 20 kHz
Signal to Noise ratio (S/N):
Unweighted >100dB measured with a
1kHz, -60dBFS tone,
20Hz to 20kHz
Harmonic distortion plus noise (THD+N) <85dB measured with a
1kHz, 0dBFS tone,
output loaded withn 600 Ω
Crosstalk between channels <-80dB measured a 1 kHz
General
Power consumption 4.5 W outputs unloaded
Operating temperature range 0 .. 50 ºC
Approximate weight 160 g
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Albalá Ingenieros | Manual DAB2008C01
DAB2008C01
10
Albalá Ingenieros | Manual DAB2008C01
3. INSTALLATION
THE DAB2008C01 MODULE CONTAINS ELECTRONIC DEVICES SENSITIVE TO
ELECTROSTATIC DISCHARGE. Always use antistatic bags clearly identified
with a high degree of shielding for storage and transportation.
3.1. Initial inspection
Verify that the package has been properly handled during transport. After opening the
packaging, check that the DAB2008C01 module is 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 TL2000 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.
•The DAB2008C01 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.
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Albalá Ingenieros | Manual DAB2008C01
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. Installing the module in the mounting frame
The following steps should be followed in order to install a DAB2008C01 module in the
mounting frame.
1 - Remove the blank panel covering the front of the empty slot chosen for installing the
DAB2008C01 in the mounting frame.
2 - Insert the DAB2008C01 module into the front of the mounting frame. The edges of
the card slide into two plastic guides inside the mounting frame.
3 - Secure the module to the mounting frame using the two front screws.
After these steps, the module is ready to be connected to other equipment.
3.5. Interconnection
The arrangement of the front panel connectors of the DAB2008C01 module is shown in
the following figure.
Front panel of the DAB2008C01
The DAB2008C01 provides eight analog audio outputs (OUT1 - OUT8) via the ANALOG
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Albalá Ingenieros | Manual DAB2008C01
AUDIO OUT connector.
The following image shows the arrangement of the outputs on the terminals of the
connector.
The front panel has not been designed to support mechanical stress. All cabling in the
rack where the mounting frame is located should be properly supported so that the front
panel does not provide mechanical support.
3.5.1. Analog audio connections
The analog audio outputs are balanced, use a 25 contact Sub-D female connector and
their characteristic impedance is 73Ω.
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 DAB2008C01
DAB2008C01
14
Albalá Ingenieros | Manual DAB2008C01
4. OPERATION
This section describes the significance of the front panel indicators of the DAB2008C01
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 DAB2008C01
In addition to the connectors previously described in the Interconnection section the
front panel includes the following indicators and controls:
In the STATUS box:
AUD.: This LED lights up in green when the audio level after any gains applied does not
pass the overload threshold for any of the channels and no saturation results
from the gains applied. Otherwise, this LED lights up in red.
BUS: This LED lights up in green when the reference signal from the internal
synchronization bus of the mounting frame has been detected and the module
has locked to the reference, the AUDIOFLEX stream has been detected, the stream
is error-free and the audio channels to be de-multiplexed are present in the
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Albalá Ingenieros | Manual DAB2008C01
stream. Otherwise, the LED lights up in red.
4.2. Functional description
AUDIOFLEX is a data bus that is formed by two lines: M2S (Master to Slave) and S2M
(Slave to Master), that interconnect all the slots of a UR2000 mounting frame. Each of
the two lines can multiplex up to 64 channels of audio sampled at 24 bits, 48kHz
grouped in eight time slots, each of which contains eight audio channels.
The 64 channels of audio for each of the lines of the AUDIOFLEX bus are grouped in eight
time slots, each of which contains eight audio channels. The insertion or reading of the
eight audio channels contained in a slot are always performed by the same module.
In order to identify correctly the different time slots the UR2000 mounting frame must
always have a module installed that acts as a master - normally the IMB2000C01. This
module inserts an alignment header on the bus's M2S line. If this header is not present,
the DAB2008C01 module will indicate an error in the stream from the bus.
The DAB2008C01 module provides eight analog audio outputs that are generated from
eight audio channels taken from one of the slots of the AUDIOFLEX M2S line.
The four audio channels that the module extracts from the M2S line of the AUDIOFLEX
bus are always taken from the same time slots. This slot can be assigned manually or
automatically. For manual assignment the user indicates the slot number to be used for
the extraction of the eight audio channels, whereas in automatic assignment the user
indicates the base slot of the mounting frame, and the time slots are assigned starting
from this number. For example, if the base slot of the frame is 10, the module installed
in Slot 10 will take the eight audio channels from Time Slot 1, the module installed in
Slot 11 will take the eight audio channels from Time Slot 2, and so on.
The DAB2008C01 signals an error when one of the audio channels in the AUDIOFLEX bus
is not present. In Automatic Mode this same error is flagged if the base slot of the
mounting frame and the position of the module in the frame try to generate a time slot
that is outside the range of 1 to 8. For example, if the base slot is 10 and the module is
located in Slot 8.
As with all devices that manage digital audio, the DAB2008C01 module requires a
reference signal to synchronize to. This signal is taken from an internal synchronization
bus provided by the UR2000 mounting frame. This signal can be generated by a GNSS
receiver module such as the GPS2000C01 if it is installed in the same mounting frame, or
the module itself can act as the master for the AUDIOFLEX bus, which is normally the
IMB2000C01. If the UR2000 reference signal is not detected or the DAB2008C01 cannot
lock to it, the corresponding error flag is set.
The DAB2008C01 module provides an audio processing module between the AUDIOFLEX
bus and the external connections that permits level adjustment and/or phase reversal
for each of the audio channels. The range of gain adjustment is from 24 to -39dB is
0.5dB steps, as well as mute. If the adding gain produces saturation in one of the audio
channels then a clipping flag is raised.
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Albalá Ingenieros | Manual DAB2008C01
The module allows supervision of the signal level of all the audio channels being
processed after the gain is applied. Furthermore, an overload threshold can be set that
generates an alarm is the level of any audio channels passes the limit.
The DAB2008C01 module performs the digital-to-analog conversion of the audio at 24
bits with a sampling frequency of 48kHz and a full scale level of 22dBu.
The DAB2008C01 module provides 16 user-configurable presets.
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Albalá Ingenieros | Manual DAB2008C01
HUB/SWITCH
TL2000
COMMUNICATIONS
CONTROLLER MODULE
OTHER TL2000
MODULES
Ethernet
Ethernet
Ethernet
Ethernet
REMOTE CONTROL UNIT
TLE2001 PSU2000 PSU2000
TLE2001 PSU2000 PSU2000
UR2000 INTERNAL BUS
UR2000 INTERNAL BUS
Module remote control and supervision
4.3. Module remote control and supervision
The DAB2008C01 requires remote control for configuration.
In order to perform remote configuration and supervision of the module an optional
TL2000 family remote communications controller must be installed in the mounting
frame.
The main function of the communications control module is to interface between a
10/100 Ethernet port and the internal bus of the mounting frame. The following
illustration shows the most common control situations: from a computer or control
panel via Ethernet.
Certain communications control modules provide additional, more advanced functions
such as an SNMP agent, logging of status changes of the modules and a Web interface
for remote control, etc.
Software for simple configuration and supervision with a GUI for multiple modules can
Albalá Ingenieros | Manual DAB2008C01
The following functions of the DAB2008C01 can be performed remotely:
-Supervision of the status of the AUDIOFLEX bus and verification of the proper
configuration of the buses of the mounting frame.
- Assignment of the time slot for the AUDIOFLEX bus.
- Configuration of the gain and phase reversal of each channel.
- Configuration of the overload threshold.
- Supervision of the audio signals.
4.3.1. Details of the DAB2008C01 registers
The DAB2008C01 module provides control and status registers that can be read and
written by means of specific commands described in the communication control
module user manuals.
The parameter information grouped in the CONTROL or RAM sections is stored in
volatile memory. Any modifications to the parameters will be lost when the module
power supply is disconnected unless the "EEPROM Save" button within the software
has been pressed.
The STATUS section parameters are read-only and cannot be modified.
The EEPROM section parameters are rarely used and are stored directly in non-volatile
memory.
The parameters that can be controlled and supervised remotely for each version of
the firmware are listed below:
VERSION 1.X
CONTROL
Name add ext msk snmp trap Description
ACTIVE_PRESET 0x00 0x3F Y N Shows the active preset
32=Preset 1, 33=Preset 2, 34=Preset 3, 35=Preset 4, 36=Preset 5, 37=Preset 6,
38=Preset 7, 39=Preset 8, 40=Preset 9, 41=Preset 10, 42=Preset 11, 43=Preset
12, 44=Preset 13, 45=Preset 14, 46=Preset 15, 47=Preset 16, ?=None
LOAD_PRESET 0x00 0x7F Y N Allows loading a preset
64=Preset 1, 65=Preset 2, 66=Preset 3, 67=Preset 4, 68=Preset 5, 69=Preset 6,
70=Preset 7, 71=Preset 8, 72=Preset 9, 73=Preset 10, 74=Preset 11, 75=Preset
12, 76=Preset 13, 77=Preset 14, 78=Preset 15, 79=Preset 16, ?=''
SAVE_PRESET 0x00 0xFF Y N Allows saving a preset
128=Preset 1, 129=Preset 2, 130=Preset 3, 131=Preset 4, 132=Preset 5,
133=Preset 6, 134=Preset 7, 135=Preset 8, 136=Preset 9, 137=Preset 10,
138=Preset 11, 139=Preset 12, 140=Preset 13, 141=Preset 14, 142=Preset 15,
143=Preset 16, ?=''
MAN_N_AUTO 0x01 0x01 Y N It allows selecting the slot working mode
0=Auto, 1=Manual
BASE_SLOT 0x01 0x7C Y N Base rack slot
= x
SLOT_USED 0x02 0x0F Y N Employed slot (read)
0=1, 1=2, 2=3, 3=4, 4=5, 5=6, 6=7, 7=8, 8=None
OVLD_LEVEL 0x03 0xFF Y N It allows selecting the overload audio level
= (x - 255)/4 dBFS (0=Mute)
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Albalá Ingenieros | Manual DAB2008C01
BUS_TIME_MSK 0x04 0x01 N N Synchronization internal rack bus fail mask
0=Disabled, 1=Enabled
UNLOCK_MSK 0x04 0x02 N N Synchronization internal rack bus unlocked mask
0=Disabled, 1=Enabled
BUS_AUD_MSK 0x04 0x04 N N Audio bus fail mask
0=Disabled, 1=Enabled
BUS_AUD_ERR_MSK 0x04 0x08 N N Audio bus errors mask
0=Disabled, 1=Enabled
AUD_CLIP_ER_MSK 0x04 0x10 N N Audio clipping error mask
0=Disabled, 1=Enabled
AUD_PRES_MSK 0x04 0x20 N N Audio presence fail mask
0=Disabled, 1=Enabled
AUD_OVLD_MSK 0x04 0x80 N N Audio overload fail mask
0=Disabled, 1=Enabled
RAM
Name add ext msk snmp trap Description
GAIN0 0x00 0x0700 0x7F N N Gain applied to the analogue output 1
= 24-x/2 dB
PHASE0 0x00 0x0700 0x80 N N Phase gain applied to the analogue audio output 1
0=Normal, 1=Inverted
GAIN1 0x01 0x0700 0x7F N N Gain applied to the analogue output 2
= 24-x/2 dB
PHASE1 0x01 0x0700 0x80 N N Phase gain applied to the analogue audio output 2
0=Normal, 1=Inverted
GAIN2 0x02 0x0700 0x7F N N Gain applied to the analogue output 3
= 24-x/2 dB
PHASE2 0x02 0x0700 0x80 N N Phase gain applied to the analogue audio output 3
0=Normal, 1=Inverted
GAIN3 0x03 0x0700 0x7F N N Gain applied to the analogue output 4
= 24-x/2 dB
PHASE3 0x03 0x0700 0x80 N N Phase gain applied to the analogue audio output 4
0=Normal, 1=Inverted
GAIN4 0x04 0x0700 0x7F N N Gain applied to the analogue output 5
= 24-x/2 dB
PHASE4 0x04 0x0700 0x80 N N Phase gain applied to the analogue audio output 5
0=Normal, 1=Inverted
GAIN5 0x05 0x0700 0x7F N N Gain applied to the analogue output 6
= 24-x/2 dB
PHASE5 0x05 0x0700 0x80 N N Phase gain applied to the analogue audio output 6
0=Normal, 1=Inverted
GAIN6 0x06 0x0700 0x7F N N Gain applied to the analogue output 7
= 24-x/2 dB
PHASE6 0x06 0x0700 0x80 N N Phase gain applied to the analogue audio output 7
0=Normal, 1=Inverted
GAIN7 0x07 0x0700 0x7F N N Gain applied to the analogue output 8
= 24-x/2 dB
PHASE7 0x07 0x0700 0x80 N N Phase gain applied to the analogue audio output 8
0=Normal, 1=Inverted
Name add ext msk snmp trap Description
STATUS
Name add ext msk snmp trap Description
BUS_SYNC_FAIL 0x01 0x01 Y Y Synchronization internal rack bus fail
0=OK,1=Fail
BUS_SYNC_UNLCK 0x01 0x02 Y Y Synchronization internal rack bus unlocked
0=OK,1=Fail
BUS_AUD_FAIL 0x01 0x04 Y Y Audio bus fail
0=OK,1=Fail
BUS_AUD_ERROR 0x01 0x08 Y Y Audio bus errors
0=OK,1=Fail
AUD_CLIP_ER 0x01 0x10 Y Y Audio clipping error
0=OK,1=Fail
AUD_PRES_FAIL 0x01 0x20 Y Y It lights up when the backplane bus does not have all the audio channels the
module is required to read
0=OK,1=Fail
AUD_OVLD_FAIL 0x01 0x80 Y Y Audio overload fail
0=OK,1=Fail
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Albalá Ingenieros, S.A. DAB2008C01 User manual

Brand
Albalá Ingenieros, S.A.
Model
DAB2008C01
Type
User manual
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