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

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.

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.

Albalá Ingenieros | Manual DAB2008C01

1.3. Block diagram

Albalá Ingenieros | Manual DAB2008C01

DAB2008C01

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

Albalá Ingenieros | Manual DAB2008C01

DAB2008C01

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.

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

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.

Albalá Ingenieros | Manual DAB2008C01

DAB2008C01

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

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.

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.

Albalá Ingenieros | Manual DAB2008C01

HUB/SWITCH

TL2000

COMMUNICATIONS

CONTROLLER MODULE

OTHER TL2000

MODULES

Ethernet

REMOTE CONTROL UNIT

TLE2001 PSU2000 PSU2000

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)

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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Albalá Ingenieros, S.A. DAB2008C01 User manual

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