Albalá Ingenieros DEM3000C01 User manual

DEM3000C01
DUAL AES/EBU AUDIO EMBEDDER IN SD-SDI DIGITAL VIDEO
Version 1.0
Albalá Ingenieros, S.A.
Medea, 4 - 28037 Madrid - Spain
04 January 2018 - © Albalá Ingenieros S.A. - All rights reserved

DEM3000C01

DEM3000C01
DUAL AES/EBU AUDIO EMBEDDER IN SD-SDI DIGITAL VIDEO
Version 1.0
1. DESCRIPTION ...................................................................................................................... 5
1.1. The DEM3000C01 .......................................................................................................................... 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. Power considerations ................................................................................................................. 12
3.5. Module configuration ................................................................................................................ 12
3.6. Installing the module in the mounting frame ................................................................... 13
3.7. Interconnection ............................................................................................................................ 15
3.7.1. Electrical SDI video connections .................................................................................... 16
3.7.2. Digital audio connections ................................................................................................ 16
4. OPERATION ...................................................................................................................... 17
4.1. Front panel description .............................................................................................................. 17
4.2. Configuration from the front panel ...................................................................................... 18
4.3. Module remote control and supervision ............................................................................. 19
4.3.1. Details of the DEM3000C01 registers ......................................................................... 20
5. GLOSSARY ........................................................................................................................ 25
6. REGULATIONS .................................................................................................................. 27
7. VERSIONS ......................................................................................................................... 29

DEM3000C01

Albalá Ingenieros | Manual DEM3000C01
1. DESCRIPTION
1.1. The DEM3000C01
The DEM3000C01 module is a embedder of AES/EBU-format digital audio
AES/EBU-format digital audio into SDI video signals as per SMPTE 272M-AC. The
DEM3000C01 consists of two identical sections that can insert two streams of digital
audio, the equivalent of four channels of analog audio, into each SDI video signal. The
audio to be embedded must have a sampling frequency of 48kHz and be synchronized
to the video. The module includes digital audio reference outputs as per AES11 that are
generated from the input SDI video and can be used to synchronize other sources of
digital audio when needed.
The DEM3000C01 operates with binary encoded video at 270 and 360Mbit/s for both
525 and 625 line systems.
The module provides a pushbutton and various LEDs on the front panel in order to select
and indicate into which group the audio will be embedded. This and other operations
can also be performed remotely by installing a communications controller in the same
mounting frame as the DEM3000C01.
The reserved fields of the SDI stream for (EDH) error detection are both processed and
updated completely.
It is possible to monitor the DEM3000C01 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 DEM3000C01 is a TL3000 terminal line module and can be housed in a three rack
unit (3 RU) UR3000 mounting frame or a 1 RU UR3100 mounting frame.
5

Albalá Ingenieros | Manual DEM3000C01
1.2. Features
•Dual embedder for inserting AES/EBU digital audio into SD-SDI digital video as per
SMPTE 272M.
•Provides two sections, each of which can embed two digital audio streams into a video
group.
•Embeds 20 or 24 bit, 48kHz AES/EBU digital audio streams in sync with the video
signal.
•Provides automatic equalizers at the inputs capable of compensating 300+ meters of
Belden 8281 cable.
• The video output for each section is distributed to two connectors.
• Provides two balanced, transformer isolated digital audio inputs per section.
• Provides two transformer isolated AES11 reference digital audio outputs per section.
• Performs complete EDH packet processing.
•Ability to remove all audio groups contained within the incoming SDI signal before
embedding.
• Front panel indicator for SDI signal absence and EDH errors.
• Front panel indicators for the audio groups used in the SDI signal.
•Front panel indicators for z-flag violations and incorrect sampling frequency in the
AES/EBU signal.
• Front panel button for selection of audio group for insertion.
•Module control and supervision can be done remotely when the mounting frame is
equipped with a communications controller module.
•One UR3000 mounting frame can house up to 12 DEM3000C01 modules. If power
supply redundancy is required and FA3000 or FA3001 modules are used then only 10
modules can be housed in the mounting frame. If PSU3300 or PSU3301 modules are
used for this purpose then up to 12 modules can be installed.
• One UR3100 mounting frame can house up to three DEM3000C01 modules.
• Low power.
6

Albalá Ingenieros | Manual DEM3000C01
1.3. Block diagram
7

Albalá Ingenieros | Manual DEM3000C01
DEM3000C01
8

Albalá Ingenieros | Manual DEM3000C01
2. SPECIFICATIONS
SD-SDI digital video signal input
Connector BNC
Impedance 75Ω ± 1 %
Return loss >15dB up to 360 MHz
Number of inputs 1 per section, 2 sections
Equalizable cable length:
Belden 8281 >300 m
SD-SDI digital video signal output
Connector BNC
Impedance 75Ω ± 1 %
Return loss >15dB up to 360 MHz
Number of outputs 2 per section
Amplitude 800mVpp ± 10 %
Rise and fall time (20 % - 80 %) 1.1 ns typ.
SD-SDI digital video signal
Signal format According to SMPTE ST 259 standard
Bit rate 270 or 360Mbit/s
Embedded audio format According to SMPTE 272M
standard, 48kHz
synchronous with video
Input to output delay 630 ns
AES/EBU digital audio signal input
Connector Plug-in terminal,
3.81mm pitch
Impedance 110Ω ± 20 %
Type Transformer balanced
Encoding and electrical characteristics According to
EBU Tech. 3250-E/AES3
standard
Sampling rate 48kHz synchronous with video
Number of inputs 2 per section
AES/EBU digital audio reference signal output
Connector Plug-in terminal,
3.81mm pitch
Impedance 110Ω ± 5 %
Type Transformer balanced
9

Albalá Ingenieros | Manual DEM3000C01
Encoding and electrical characteristics According to
EBU Tech. 3250-E/AES3 and AES11
standards
Sampling rate 48kHz synchronous with video
Number of outputs 2 per section
General
Maximum power supply current + 410 / - 410 mA
Operating temperature range 0 .. 50 °C
Approximate weight 400 g
10

Albalá Ingenieros | Manual DEM3000C01
3. INSTALLATION
THE DEM3000C01 MODULE CONTAINS ELECTRONIC DEVICES SENSITIVE TO
ELECTROSTATIC DISCHARGE. Always use antistatic bags clearly identified
with a high degree of shielding for storage and transportation.
The DEM3000C01 module is composed of two parts: one DEM3000P01 main board and
one DEM3000P02 rear board. Both parts must be installed in a UR3000 or UR3100
mounting frame following the instructions in the corresponding section of this chapter.
3.1. Initial inspection
Verify that the package has been properly handled during transport. After opening the
packaging, check that one DEM3000P01 main board and one DEM3000P02 rear board
are inside.
Follow the instructions in this manual to install this module in the mounting frame.
You must notify your Albalá Ingenieros distributor or dealer of any damage or defects
observed.
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 TL3000 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. When a module is installed in an empty bay of a mounting
frame, it is necessary to mount the rear board that is part of that module.
Prior to installing this board, the mounting frame must be disconnected
from the power supply network. This is required because in addition to the
risk of electrocution for the person handling the device it is possible that a
high instantaneous current coming from the power supply could damage
the connectors and components of the mounting frame and/or the rear
board.
11

Albalá Ingenieros | Manual DEM3000C01
•The DEM3000C01 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.
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. Power considerations
The UR3000 and UR3100 mounting frames can house as many DEM3000C01 modules
as will fit in them.
3.5. Module configuration
The block of DIP switches S1 is used for selection of the desired operating mode upon
startup. This configuration can be changed later using the control software if the
mounting frame where the module is installed also has a communications controller.
-Switch 1 is used to deactivate the embedding function of Section A of the module.
Switch 4 is used to deactivate embedding for Section B. When the module is not
embedding audio the SDI video at the output is exactly the same as the signal
received at the input.
-Switch 2 activates the function that erases all the audio groups embedded in the
input SDI video signal for Section A. Switch 5 performs the same function for Section
B.
-Switch 3 is used when a single AES/EBU stream (two channels of audio) is to be
inserted into a group in Section A. Switch 6 performs the same function for Section B.
-Switch 7 selects the bit length of the audio being embedded. When 24 bits is selected
then extended audio packets are used to embed the 24 bit signals obtained from the
A/D converters.
12

Albalá Ingenieros | Manual DEM3000C01
- Switch 8 configures the module to insert two audio groups into an SDI video signal.
These switches comes preset to ON from the factory.
SECTION A S1 ON S1 OFF
Switch 1. Embed enable yes no
Switch 2. Erase before embed no yes
Switch 3. Number of channels per group 4 2
SECTION B
Switch 4. Embed enable yes no
Switch 5. Erase before embed no yes
Switch 6. Number of channels per group 4 2
COMMON
Switch 7. Audio sample bit length 20 24
Switch 8. Operating mode 2 sections
1 group
1 section
2 groups
3.6. Installing the module in the mounting frame
The steps needed to install the DEM3000C01 module with the rear board in the
mounting frame are:
1 - Disconnect all power cords from the power supplies of the mounting frame.
2 - Remove the blank panels covering the front and rear of the empty bays chosen for
installing the DEM3000C01 in the mounting frame.
3 - Install the DEM3000P02 rear board ensuring that its 12-pin connectors are properly
aligned with the mounting frame´s mating connectors. Check that the orientation of
the board is correct by looking at the placement of the text printed on it according to
the illustration below.
4 - Attach the rear board to the mounting frame with two M3 metric screws and tighten.
5 - Verify that the main board is configured according to the user requirements. The
configuration process is detailed later in the INSTALLATION section of this manual.
6 - Insert the DEM3000P01 board (main board of the DEM3000C01 module) into the
front of the mounting frame. The edges of the card slide into two plastic guides inside
the mounting frame.
7 - Affix the main board to the mounting frame using the two screws included on the
front panel.
After these steps, the module is ready to be connected to other equipment.
13

Albalá Ingenieros | Manual DEM3000C01
Details for installation of the module in 3 RU mounting frames
Details for installation of the module in 1 RU mounting frames
14

Albalá Ingenieros | Manual DEM3000C01
3.7. Interconnection
The following figure shows the DEM3000C01 module rear board connector layout.
Rear view of the DEM3000C01
The DEM3000C01 module provides two digital video inputs (IN-A,IN-B) and two outputs
(OUT1-A,OUT2-A,OUT1-B,OUT2-B) per section. It also has four AES/EBU digital audio
inputs (A1,A2,B1,B2) and four AES/EBU digital audio reference outputs (A3,A4,B3,B4).
The connectors labeled SPARE-A and SPARE-B are not used.
The rear interconnection board is not designed to withstand mechanical stress. The
wiring must be fastened properly to the frame where the mounting frame is housed to
prevent the rear board from supporting the weight of the cables.
15

Albalá Ingenieros | Manual DEM3000C01
3.7.1. Electrical SDI video connections
All electrical SDI video connections are BNC type. The following suggestions should be
kept in mind when wiring the electrical signals.
BNC connectors used on cables must be suitable for the high frequencies of digital
video signals: it is strongly recommended to use high quality connectors from well
known manufacturers.
All coaxial cable used must be Belden 8281 or similar. This type provides the greatest
lengths because it is used to calculate the equalizers in the DEM3000C01. Cables
carrying signal between the module and the devices should use single piece
construction, avoiding spliced sections with double BNC female or barrel connectors.
If it is necessary to split the cable into two sections the same type of wire should be
used in both sections.
The use of analog video coaxial cables RG-59 type or similar is not recommended for
digital video except for very short distances.
3.7.2. Digital audio connections
Digital audio inputs are balanced and use 3.81mm pitch terminal block connectors.
Digital audio outputs are balanced, use 3.81mm pitch terminal block connectors and
their characteristic impedance is 110Ω.
For digital audio connections 110Ω characteristic impedance, two-wire shielded cable
is preferred. The GND terminal allows connection of the cable shield.
16

Albalá Ingenieros | Manual DEM3000C01
4. OPERATION
This section describes the significance of the front panel indicators of the DEM3000C01
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 DEM3000C01
The panel contains the following elements:
17

Albalá Ingenieros | Manual DEM3000C01
In the CH. A FAIL and CH. B FAIL boxes:
SDI: Red. Error in the serial digital video signal. This LED lights up when no
signal is present, when the signal does not have the correct binary velocity
or when the cable is too long and the signal arrives with too much
attenuation. Reception of a video signal with EDH or checksum errors in
the audio packets will cause this LED to blink at one second intervals.
AES 1,
AES 2: Red. These LEDs light up when no signal is present at any of the digital
audio inputs or when the sampling rate of the audio received is not
48kHz. The corresponding LED will blink twice within approximately one
second each time that the internal memory overflows or is erased due to
a lack of synchronization with the video signal or when the parity bit of
the audio received is incorrect.
In the central box:
1/2/3/4: Green. These LEDs light up at low intensity to indicate which audio groups
are present in the SDI signal. Whichever LED is lit the brightest indicates
the embedded audio group that is currently being embedded.
GROUP SEL.: Pushbutton. Used to select the group in which the AES/EBU streams will
be embedded.
4.2. Configuration from the front panel
The DEM3000C01 embedder has two independent sections, each of which can embed
an audio group. The SDI stream can carry up to four audio groups, where each group
consists of two or four audio signals that have been independently encoded at 20 or 24
bits. Selection of the group to be embedded is done via a pushbutton on the front panel
or from a computer if the mounting frame has a communications controller installed.
The pushbutton operates in the following manner:
1.- Press and hold the button for more than one second to select the group for Section A
or for more than two seconds to select the group for Section B.
2.- The green audio group LED that was brightest will begin to blink at approximately
one-half second intervals, indicating that the module is in configuration mode.
3.- Use brief presses of the button to make the LED corresponding to the audio group to
be embedded blink.
4.- Press and hold the button for more than one second to confirm the selection.
5.- The associated LED stops blinking and the group to be embedded changes to the
group with the brightest LED.
18

Albalá Ingenieros | Manual DEM3000C01
HUB/SWITCH
TL3000
COMMUNICATIONS
CONTROLLER MODULE
OTHER TL3000
MODULES
Ethernet
Ethernet
Ethernet
Ethernet
REMOTE CONTROL UNIT
EIA-RS232
EIA-RS485
TLE3100
LINK
FULLDUP.
100M
RXPCK.
TXPCK.
ERROR
ETHERNET
RXCMD.
TXCMD.
ERROR
EIA-232/485
RX DATA
TX DATA
INT.BUS
DEM3000 DEM3000 DEM3000 DEM3000 DEM30 00 DEM3000 DEM3000 DEM3000 DEM300 0 DEM3000 DEM3000 DEM3000 DEM3000
UR3000 INTERNAL BUS
TLE3100
LINK
FULLDUP.
100M
RXPCK.
TXPCK.
ERROR
ETHERNET
RXCMD.
TXCMD.
ERROR
EIA-232/485
RX DATA
TX DATA
INT.BUS
DEM3000 DEM3000 DEM3000 DEM3000 DEM30 00 DEM3000 DEM3000 DEM3000 DEM300 0 DEM3000 DEM3000 DEM3000 DEM3000
UR3000 INTERNAL BUS
Module remote control and supervision
4.3. Module remote control and supervision
The DEM3000C01 can optionally be remotely controlled/supervised.
In order to perform remote configuration and supervision of the module an optional
TL3000 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, an EIA-RS232 or an EIA-RS485 serial 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, from a computer via an
EIA-RS232 serial port and from a control panel via an EIA-RS485 serial port.
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
be downloaded from the Albalá Ingenieros website.
19

Albalá Ingenieros | Manual DEM3000C01
The following functions of the DEM3000C01 can be performed remotely:
- Selection of the audio group to be embedded.
-Selection of the operating mode, bit depth of the audio, number of channels per field
and erasure before embedding.
-Selection of the alarm conditions that will be displayed via the indicator LEDs on the
front panel.
- Supervision of the status of the audio and video being received.
4.3.1. Details of the DEM3000C01 registers
The DEM3000C01 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 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
EMBED_INS_A 0x00 0x01 Y N Allows selecting if the audio is embedded (Section A)
0=No, 1=Yes
EMBED_MODE_A 0x00 0x02 Y N Allows selecting if the incoming audio groups are deleted before embedding
(Section A)
0=Clear+Insert, 1=Append
EMBED_CH_A 0x00 0x04 Y N Allows selecting the number of AES frames embedded in the group (Section A)
0=2, 1=4
EMBED_INS_B 0x00 0x08 Y N Allows selecting if the audio is embedded (Section B)
0=No, 1=Yes
EMBED_MODE_B 0x00 0x10 Y N Allows selecting if the incoming audio groups are deleted before embedding
(Section B)
0=Clear+Insert, 1=Append
EMBED_CH_B 0x00 0x20 Y N Allows selecting the number of AES frames embedded in the group (Section B)
0=2, 1=4
EMBED_BITS 0x00 0x40 Y N Allows selecting the number of bits of the embedded audio
0=24, 1=20
OPERATING_MODE 0x00 0x80 Y N Allows selecting if the module acts as two one group embedders or as one two
groups embedder
0=1 SDI x 2 groups, 1=2 SDI x 1 group
GROUP_A 0x01 0x03 Y Y Allows selecting the group in which the audio is embedded (Section A)
0=1, 1=2, 2=3, 3=4
GROUP_B 0x01 0x30 Y Y Allows selecting the group in which the audio is embedded (Section B)
0=1, 1=2, 2=3, 3=4
NO_AES1_A_MASK 0x02 0x01 N N Allows masking AES1 signal fail (Section A)
0=Disabled, 1=Enabled
20