Lynx P DM 5240 D User manual

LYNXTechnik AG
Broadcast Television Equipment
© 2011 - 2017 LYNX Technik AG all rights reserved
®
Reference Manual
P DM 5240 D
P DM 5240 U
SD/HD/3G Multi-format digital Audio Embedder / Deembedder
Revision 2.1 – May 2017
This Manual Supports Device Revisions:
P DM 5240 Firmware Revision
626
Control System GUI Release
8.2.0
Information in this document is subject to change without notice. No part of this document may be reproduced or
transmitted in any form or by any means, electronic or mechanical for any purpose, without express written permission of
LYNX Technik AG.
LYNX Technik AG may have patents, patent applications, trademarks, copyrights or other intellectual property rights
covering the subject matter in this document. Except as expressly written by LYNX Technik AG, the furnishing of this
document does not give you any license to patents, trademarks, copyrights or other intellectual property of LYNX Technik
AG or any of its affiliates.
LYNX Technik AG
Brunnenweg 3
D 64331 Weiterstadt
Germany
www.lynx-technik.com

P DM 5240 Reference Manual. Rev 2.1
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Contents
Contents...............................................................................................................2
Warranty...............................................................................................................4
Regulatory information ........................................................................................5
Europe......................................................................................................................................... 5
Declaration of Conformity ....................................................................................................... 5
USA............................................................................................................................................. 5
FCC 47 Part 15....................................................................................................................... 5
Getting Started.....................................................................................................6
Packaging.................................................................................................................................... 6
ESD Warning............................................................................................................................... 6
Preventing ESD Damage........................................................................................................ 6
Caution.................................................................................................................................... 6
Product Description .............................................................................................7
Key Features............................................................................................................................... 7
Video Input Formats.................................................................................................................... 8
Video Output Formats................................................................................................................. 8
Audio Processing ........................................................................................................................ 9
Functional Diagram................................................................................................................... 10
Module Layout........................................................................................................................... 11
Connections .......................................................................................................12
Video......................................................................................................................................... 12
Audio......................................................................................................................................... 12
Installation .........................................................................................................13
Settings and Control ..........................................................................................13
DIP Switch Settings................................................................................................................... 14
Factory Preset Condition ...................................................................................................... 15
Auto Store............................................................................................................................. 15
Reset Button ......................................................................................................................... 15
Alarm/LED Status Indicators..................................................................................................... 16
LED 1: SDI Status................................................................................................................. 16
LED 2: Audio Status.............................................................................................................. 16
Alarm LED............................................................................................................................. 16
Power LEDs.......................................................................................................................... 16
Local/Remote LED................................................................................................................ 16
Control System GUI............................................................................................17
Overview ................................................................................................................................... 18
Video Path ............................................................................................................................ 18
Audio Routing ....................................................................................................................... 18
flexGUI path highlighting and signal patching....................................................................... 19
Timing and Delays..................................................................................................................... 19
Audio Infastructure.................................................................................................................... 19
Audio Content Detection....................................................................................................... 20

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Sample Rate Conversion...................................................................................................... 20
Audio Processing.................................................................................................................. 21
Audio Crossbars ................................................................................................................... 22
Embedder ............................................................................................................................. 22
AES Port Setup......................................................................................................................... 24
Device Event Tab ...............................................................................................24
Parameters.........................................................................................................25
All Control is through Parameters............................................................................................. 26
General GUI functions........................................................................................27
Device Properties.................................................................................................................. 27
Locate ................................................................................................................................... 27
New Control Window ............................................................................................................ 27
Rename................................................................................................................................. 28
Save Settings Now................................................................................................................ 28
Lock....................................................................................................................................... 28
Reset Factory Defaults ......................................................................................................... 28
Settings Management........................................................................................................... 28
Specifications ....................................................................................................29
Service ...............................................................................................................30
Parts List............................................................................................................................... 30
Technical Support................................................................................................................. 30
Contact Information...........................................................................................30

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Warranty
LYNX Technik AG warrants that the product will be free from defects in materials and
workmanship for a period of two (3) years from the date of shipment. If this product
proves defective during the warranty period, LYNX Technik AG at its option will either
repair the defective product without charge for parts and labor, or will provide a
replacement in exchange for the defective product.
In order to obtain service under this warranty, customer must notify LYNX Technik of the
defect before expiration of the warranty period and make suitable arrangements for the
performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by LYNX Technik, with shipping
charges prepaid. LYNX Technik shall pay for the return of the product to the customer if
the shipment is within the country which the LYNX Technik service center is located.
Customer shall be responsible for payment of all shipping charges, duties, taxes and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure, or damage caused by improper use or
improper or inadequate maintenance and care. LYNX Technik shall not be obligated to
furnish service under this warranty a) to repair damage resulting from attempts by
personnel other than LYNX Technik representatives to install, repair or service the
product; b) to repair damage resulting from improper use or connection to incompatible
equipment; c) to repair any damage or malfunction caused by the use of non LYNX
Technik supplies; or d) to service a product which has been modified or integrated with
other products when the effect of such modification or integration increases the time or
difficulty servicing the product.
THIS WARRANTY IS GIVEN BY LYNX TECHNIK WITH RESPECT TO THIS PRODUCT
IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. LYNX TECHNIK
AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. LYNX TECHNIK`S RESPONISIBILITY
TO REPAIR AND REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE
REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.
LYNX TECHNIK AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTIAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF
WHETHER LYNX TECHNIK OR THE VENDOR HAS ADVANCE NOTICE OF THE
POSSIBILITY OF SUCH DAMAGES.

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Regulatory information
Europe
Declaration of Conformity
USA
FCC 47 Part 15
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
Note: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to the part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at their own expense.
We LYNX Technik AG
Brunnenweg 3
D-64331 Weiterstadt
Germany
Declare under our sole responsibility that the product
TYPE: P DM 5240 D; P DM 5240 U
To which this declaration relates is in conformity with the following
standards (environments E1-E3):
EN 55103-1 /1996
EN 55103-2 /1996
EN 60950-1 /2006
Following the provisions of 89/336/EEC and 73/23/EEC directives.
Winfried Deckelmann
Weiterstadt, October 2011
Place and date of issue Legal Signature

P DM 5240 Reference Manual. Rev 2.1
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Getting Started
Most CardModules are installed into the rack frames and system tested in the factory. If
this is an upgrade part or service exchange item then the module is supplied in a padded
cardboard carton which includes the CardModule, rear connection plate and mounting
screws.
Packaging
The shipping carton and packaging materials provide protection for the module during
transit. Please retain the shipping cartons in case subsequent shipping of the product
becomes necessary. Do not remove the module from its protective static bag unless
observing adequate ESD precautions. Please see below.
ESD Warning
This product is static sensitive. Please use caution and use preventative measures to
prevent static discharge or damage could result to module.
Preventing ESD Damage
Electrostatic discharge (ESD) damage occurs when electronic assemblies or the
components are improperly handled and can result in complete or intermittent failure.
Do not handle the module unless using an ESD-preventative wrist strap and ensure that it
makes good skin contact. Connect the strap to any solid grounding source such as any
exposed metal on the rack chassis or any other unpainted metal surface.
Caution
Periodically check the resistance value of the antistatic strap. The measurement should
be between 1 and 10 MOhms.

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Note. Please check connected peripheral equipment before using the P DM 5240 to
make sure the audio ports of the P DM 5240 are configured correctly, e.g. an output
is not connected to an output of another device, this might damage the equipment.
Product Description
The P DM 5240 Module is a high performance SD/HD/3GBit/s audio embedder and
deembedder for AES digital audio streams.
Four external AES ports are provided which can be switched by the user individually as
AES inputs or outputs. These AES ports are provided as balanced AES3 audio inputs or
outputs on a 25 pin SubD connector (P DM 5240 D) and as unbalanced AES3id audio
inputs or outputs on 75Ohm MiniDIN connectors (P DM 5240 U).
All deembedded and external AES input streams can be processed in an audio
processing stage incl. mono gain, stereo downmix, mute, overload and silence detection
as well as a 1kHz test tone generator.
DolbyE processing is included in the audio processing stage, i.e. one encoded DolbyE
stream can be synchronized to the SDI clock domain and the Guard Band is
automatically aligned.
NOTE: The P DM 5240 is delivered from the factory preconfigured with 2 external AES
Inputs and 2 external AES outputs. See page 24 for information on re-
configuration of the signal direction of each AES port.
Key Features
•Support for SDTV, HDTV and 3GBit/s standards
•Automatic video standard and format detection
•Audio ports can be individually configured as inputs or outputs
•Existing embedded audio can be deembedded
•Delete, replace or shuffle existing embedded audio
•Mono audio crossbar
•Audio processing (mono gain, test tone, mute, phase invert, mix, overload and
silence detection)
•Embedded audio group selection
•Selectable Horizontal and Vertical Video Blanking

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Video Input Formats
The module has a multi-format serial digital input with automatic input detection. The
module will detect the following input standards and configure the input stage
automatically for operation in the connected format.
SDTV Formats
HDTV Formats
525 / 59.94Hz
1080i / 50Hz
625 / 50Hz
1080i / 59.94Hz
1080i / 60Hz
1080p / 23.98Hz
1080p / 24Hz
1080p / 25Hz
1080p / 29.97Hz
1080p / 30Hz
1080psf / 23.98Hz
1080psf / 24Hz
1080psf / 25Hz
720p / 23.98Hz
3GBit/s Formats
720p / 24Hz
1080p / 50Hz
720p / 25Hz
1080p / 59.94Hz
720p / 29.97Hz
1080p / 60Hz
720p / 30Hz
720p / 50Hz
720p / 59.94Hz
720p / 60Hz
Video Output Formats
Same as the input format or the pre-selected format if no input is connected (see above).

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Audio Processing
The module will de-embed the complete audio payload from the incoming SDI stream (4
AES groups = 8 AES streams = 16 mono channels), and passed to the AES audio
processing infrastructure, along with up to 8 external AES inputs.
The type of audio (PCM, DolbyE or Audio Data) is detected by the module automatically.
PCM Audio using the sample rate converters will be free from any audio interference
(“pops and clicks”) when frames are dropped or repeated by the frame synchronizer.
NOTE: If an encoded DolbyE audio signal is detected by the module the associated SRC
and the following audio processing will be switched off automatically. For
asynchronous DolbyE streams, the DolbyE functionality should be enabled on the
respective path. See page 20 for details.

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Functional Diagram
Figure 1: Functional Diagram

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Module Layout
Figure 4: Card Edge
Figure 2: Rear Termination
Panel
P DM 5240-D
Figure 3: Rear Termination
Panel
P DM 5240-U
Figure 5: Board Layout

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Connections
Video
The PDM 5240 uses standard 75 Ohm BNC connectors for SDI connectivity. We
recommend the use of high quality video cable for digital video connections to reduce the
risk of errors due to excessive cable attenuation. Max cable lengths the module will
support are shown below.
SDTV = 250m Belden 8281 (270Mbits/s)
HDTV = 140m Belden 1694A (1.4Gbits/s)
3GBit/s = 80m Belden 1694A (2.97Gbits/s)
NOTE: Due to the compact design of the connection plate it will be necessary to use a
connection tool to secure the BNC video connectors.
Audio
The module provides for both Unbalanced (AES3id on MINI DIN connectors) and
Balanced (AES3) external audio connections.
The P DM 5240 U versions provides MiniDIN (DIN1.0/2.3) connections
for unbalanced AES3id
The P DM 5240 D versions provides a SubD25 connector for balanced AES3
(pin layout see table below and Figure 6)
Pin Number
Connection
Pin Number
Connection
1
14
2
15
3
16
4
17
5
18
6
19
7
AES 4 +
20
AES 4 -
8
AES 4 GND
21
AES 3 +
9
AES 3 -
22
AES 3 GND
10
AES 2 +
23
AES 2 -
11
AES 2 GND
24
AES 1 +
12
AES 1 -
25
AES 1 GND
13
n.c.
It is recommended to use high
quality screened (twisted pair)
cable for the balanced audio
connections. LYNX Technik
provides optional audio breakout
cables which will bring out all
audio connections to in line XLR
connectors. Model number R AC
M 25-8 or R AC F 25-8
Figure 6: SubD25 Audio connector
(looking into connector from back of module)

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Installation
If this module was supplied as part of a system it is already installed in the rack
enclosure. If the module was supplied as a field upgrade please follow the installation
procedure below.
NOTE Observe static precautions when handling card.
Please see ESD warnings on Page 7.
Each Card Module is supplied with a rear connection panel and mounting screws. Please
follow the procedure below for the installation of the card module into the Series 5000
Card Frame.
NOTE. This module should be installed in the R FR 5012 RackFrame with a Fan Front
Cover, to ensure sufficient airflow into the RackFrame.
We recommend you power the RackFrame down before installing any additional modules
into an existing RackFrame.
1. Select a free two slot space in the card frame where the CardModule will be
located.
2. Remove the blank connection panels from the rear of the rack (if fitted)
3. Install the rear connection panel using the screws supplied. Do not tighten the
screws fully
4. Slide the card module into the card frame and carefully check the CardModule
connects to the rear connection plate. The card should fit easily and should not
require excessive force to insert - if you feel any resistance, there could be
something wrong with the rear connection panel location. Do not try and force
the connection this may damage the connectors. Remove the rear connection
panel and check alignment with the CardModule.
5. Insert and remove the CardModule a few times to ensure correct alignment and
then tighten the two screws to secure the rear connection plate.
6. Power up the rack and check the module LED’s and matrix display illuminate.
Check the module is automatically logged into the control system device tree.
(It may take a few seconds for the control system to “discover” the new module)
Settings and Control
The P DM 5240 has an integrated micro-controller, which enables the module to be
configured and controlled locally via the dip-switch or from remote when using one of the
optional controllers and control software.

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Once set, all settings are automatically saved in non-volatile internal memory. (Flash
RAM) The module will always recall the settings used prior to power down. See section
“Save Settings Now” on page 28 for more details.
DIP Switch Settings
Switch
Setting
Function
1
ON
Enable Local Adjustment
OFF
Disable Local Adjustment
2
ON
Audio Embedder for Group 1 active
OFF
No Embedding for Audio Embedder Group 1
3
ON
Audio Embedder for Group 2 active
OFF
No Embedding for Audio Embedder Group 2
4
ON
Audio Embedder for Group 3 active
OFF
No Embedding for Audio Embedder Group 3
5
ON
Audio Embedder for Group 4 active
OFF
No Embedding for Audio Embedder Group 4
6
ON
Erase content in H-Blanking interval
OFF
Content in H-Blanking interval preserved
7
ON
Erase content in V-Blanking interval
OFF
Content in V-Blanking interval preserved
8
n.a.
n.a.
Figure 7: Card Edge switches and LED positions

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DIP Switch 1 enables local adjustments. Setting it to ON enables the setting of the other
DIP switches to configure the module. Setting it to OFF will prevent any
local DIP switch settings from taking effect.
NOTE: It is recommended to set DIP switch #1 to OFF to prevent from accidental
changes to the stored module configuration if the switches are moved.
DIP Switch 2 configures the audio embedder for embedded Group 1. Setting it to ON
enables the embedder: Group 1 will be embedded, replacing the previous
content of Group 1 (if any). Setting it to OFF disables the embedder for
Group 1.
DIP switch 3 configures the audio embedder for embedded Group 2. Setting it to ON
enables the embedder: Group 2 will be embedded, replacing the previous
content of Group 2, if any. Setting it to OFF disables the embedder for
Group 2.
DIP switch 4 configures the audio embedder for embedded Group 3. Setting it to ON
enables the embedder: Group 3 will be embedded, replacing the previous
content of Group 3, if any. Setting it to OFF disables the embedder for
Group 3.
DIP switch 5 configures the audio embedder for embedded Group 4. Setting it to ON
enables the embedder: Group 4 will be embedded, replacing the previous
content of Group 4, if any. Setting it to OFF disables the embedder for
Group 4.
DIP Switch 6 enables blanking of the complete horizontal blanking interval (all HANC
data will be removed from SDI). Note that Audio Embedding (Group 1-4)
also modifies the HANC space by adding / replacing data.
DIP Switch 7enables blanking of the complete vertical blanking interval (all VANC data
will be removed from SDI).
Factory Preset Condition
The P DM 5240 is delivered programmed and preset for the following mode of operation:
Switch 1 ON Local Adjustment Enabled
Switch 2 ON Embedders for Group 1 enabled
Switch 3 ON Embedders for Group 2 enabled
Switch 4 ON Embedders for Group 3 enabled
Switch 5 ON Embedders for Group 4 enabled
Switch 6 OFF HANC data passes unmodified (except Audio Groups)
Switch 7 OFF VANC data passes unmodified
Auto Store
The current settings are stored to the local Flash RAM 10 seconds after the last
modification. As a confirmation, the Alarm LED flashes three times, see below. See
section “Save Settings Now” on page 28 for more details.
Reset Button
If this button is pressed for 5 seconds, all internal parameters will be reset to their factory
default values. To confirm this reset, the device will blink all LEDs once (OFF – ON –
OFF) and then return to their normal state.

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Alarm/LED Status Indicators
LED 1: SDI Status
LED Color
Indication
Green 
SDI input ok
Yellow 
SDI ok but unsupported standard
(no embedding takes place)
Red 
SDI input missing
LED 2: Audio Status
LED Color
Indication
Green 
All used audio inputs present and ok
Yellow 
•At least one output embeeded group is missing
one AES signal and Embedder event enabled
•At least one external Audio Input is missing but
routed to be embedded.
Red 
•At least one output embedded group is missing
both AES signals and Embedder event is enabled
•At least one external Audio Input has no signal.
NOTE: LED 3 and LED 4 are not used (always OFF).
Alarm LED
The (slightly larger) Alarm LED on the lower edge of the
module is visible through the RackFrame’s front cover and
provides a general indication of the module status.
LED Color
Indication
Green 
Normal Operation
Yellow 
•SDI Input format not supported
•Some audio input (ext. or embedded) is
missing one or more channels
Red 
•SDI Input missing
•Some audio input (ext. or embedded)
is missing all channels
Yellow flashing 
“Locate Device” activated from Control System
triple yellow flash

Saving current configuration to local flash-RAM
Power LEDs
Power 1
Indication
Green

Power from Main PSU ok
Off 
No power from Main Power Supply
Power 2
Indication
Green 
Power from Redundant PSU ok
Off 
No power from Redundant PSU
Local/Remote LED
LED Color
Indication
Green Local control via DIP switches active, all settings
according to local DIP switches
Off Current DIP settings may have been
overwritten through remote control
Figure 8: Card Edge LEDs
NOTE: If one of the Power LEDs
should be OFF while the
corresponding PSU is working
correctly, then please contact
technical support for a
verification of the board’s power
input fuse.

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Control System GUI
All LYNX CardModules support a computer interface which allows setting the modules
parameters using a simple GUI interface. Access to all standard features and in some
cases extended features is possible using this interface. The complex nature and
extensive user settings provided on the P DM 5240 requires the use of the control
system.
NOTE Any settings made using the control system overrides any local settings made on
the module. All settings are stored in internal flash ram and will survive power
Figure 9 shows the complete module GUI. The “Device Info” area across the top contains
information about the module including name and firmware revision. The “Position” area
displays the modules position and physical location. This is useful if the device is installed
as part of a larger installation.
NOTE: The Locate button (in the “Position” area) is a useful tool to quickly identify a
module in larger systems. Activating “Locate” will flash the module’s alarm LED in
yellow color. (this does not affect the module’s operation in any way).
This function will be stopped automatically (timeout).
Figure 9: P DM 5240 in APPolo GUI

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The “Event Log” at the bottom of the screen displays an individual timestamp’ed message
for any error or warning condition in the system. The same information can always be
found in the APPolo Control System’s textual logfiles.
The primary GUI screens and functions are described in the following sections.
Overview
The MAIN Tab (Figure 10) visualizes the module’s functionality. The audio and video
signals are presented flowing from left to right. Selections are made using onscreen
sliders, radio buttons, drop down selections and checkboxes. The screen can be zoomed
in/out using the mouse-wheel or the navigation tool in the top left corner of the screen.
When zooming closer, the contents of the individual boxes will become visible.
Video Path
The SDI video input on the left delivers its signal first to an Audio Deembedder (for
extraction of all contained audio channels).
Blanking of the H- and V- interval (HANC / VANC) can be enabled to completely remove
all contents form the respective ANC area.
The Embedder will embed the specified groups into the SDI output stream, replacing an
existing Audio Group, if already present. The resulting output SDI stream is available on
two separate BNC connectors.
Audio Routing
All 8 AES channels are deembedded from the SDI input. In addition, up to 4 external AES
inputs can be used. This makes a total of up to 12 AES inputs that can be processed and
then assigned to any one of the outputs (SDI embedder and up to 4 external AES
outputs). Further details can be found in the following sections.
NOTE: there are a total of 4 external AES ports. Each of the port can be configured to be
an input or an output port. See page 24.
Figure 10: P DM 5240 MAIN Tab

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flexGUI path highlighting and signal patching
The flexGUI shows all current signal connections as lines (i.e. it does not show any signal
lines that are actually unused dead ends). Hovering the mouse pointer over any such
signal line will highlight the complete signal path that leads to this point. This illustrates
clearly where the particular signal is coming from. Similarly, the downstream path is
highlighted to show where this signal is going to.
To re-connect a signal (change the routing) you can think of a signal line as a patch-cable
that has to be connected to the desired source. Hovering the mouse-pointer over a
flexible signal will show a handle. Grab the handle (click-and-hold) with the left mouse
button and drag-and-drop it to the new desired source. More details are shown below.
Timing and Delays
Different internal processing paths for audio and video signals require different internal
processing times. Independently from these internal processing delays, a sophisticated
algorithm will make sure that all signals that are received on the input will be delivered
from the outputs in the exact same relative timing.
As an example, embedded audio streams, which are separated from the video by the
audio-deembedder near the input, and which are then routed on internal channels that
are independent and separate from the video infrastructure, will be embedded back into
the video after they have been timing-adjusted to match the processing delay of the video
path.
The internal delay and signal timings can NOT be influenced or modified in the P DM
5240. For applications that require a manual adjustment of such delay values, consider
the use of the LYNX P DM 5280 product.
Audio Infastructure
The complete audio payload of 8 AES is deembedded from the SDI input stream. In
addition, up to 4 external AES inputs can be applied to the module. All of these AES
streams are supplied to the internal audio infrastructure.
Phase Aligned Deembedding
The SDI Audio Deembedder deembedds all of the contained Audio Groups (up to four
Groups) simultaneously. When the deembedder detects a new SDI stream (e.g. after
connecting the signal or after a change of video standard), then the deembedding
process starts for all groups, and all groups will be deembedded with correct phase
alignment between all channels.
There is, however, a particular situation in which a phase aligned deembedding across all
deembedded groups is NOT guaranteed by default: Consider the following scenario:
1. SDI contains audio groups 1 and 2 (audio groups 3 and 4 are not present in
the SDI stream). Both groups are deembedded with a correct phase aligment
between all of their AES streams, as explained above.
2. While SDI stream is being received without interruption, audio group 3 is
added by the upstream embedder. I.e. the HANC content is re-arranged
dynamically, and another additional audio group appears, which has not been
present initially.
3. The SDI Audio Deembedder will start to de-embed the content of the
additional group and deliver the AES content, as usual. The content of new

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group 3, however, is not guaranteed to be phase-aligned with the content of
groups 1 and 2 (which had been there before already).
I.e. if the content of the HANC space is re-arranged to accommodate for an additional
audio group while other audio groups remain present, the additional groups are, by
default, not guaranteed to be deembedded phase-aligned to the previous content.
Such phase-aligned deembedding can optionally be guaranteed, even in the above case.
This can be achieved by enabling the Parameter “DeembPhaseSync” on the “Params”
tab (page 25). As a consequence, all deembedding will be re-initialized on a re-
arrangement of the HANC content. In the above scenario, there would be an audible
disturbance in the contents of groups 1 and 2 when group 3 appears in the HANC.
NOTE The Params-Tab contains another parameter with a similar name:
“DeembPhaseSyncVerify*”. This parameter is ON by default and it guarantees
phase alignment within a stereo-pair. This is not the same as guaranteeing phase
alignment across groups, as explained above.
Audio Content Detection
For every input AES channel, the content type is
automatically detected and displayed in the
APPolo GUI by a single upper-case Letter. The
following indications are supported:
PPCM stream (transparent stereo)
EDolbyE encoded stream
DOther encoded data (e.g. AC-3)
<none> If no letter is displayed at all, then this
AES channel does not currently carry
any data.
NOTE: Automatic Content Detection can be overwritten by manual decision (click onto
the box with the letter ‘P’). This is, however, only recommended for testing
purposes. I.e. in order to achieve best possible signal integrity, it is strongly
recommended to leave the Content Detection algorithm in “automatic” mode.
Sample Rate Conversion
A Sample Rate Converter (SRC) is provided per each external AES input stream. The
SRC will re-sample the input to a 48kHz samping rate as derived from the current SDI
source signal. SRCs are enabled by default (checkbox in APPolo GUI is set to active). If
the content type has been detected as anything but PCM (letter ‘P’, see above), then the
SRC operation will automatically be bypassed. I.e. it is NOT possibile to destroy an
encoded bitstream (such as DolbyE or AC-3) by accidentally leaving the SRC activated.
NOTE: If the input AES stream is already sampled at 48kHz, but if that sampling rate has
not been genlocked to the same REF, then the use of the built-in SRC’s is
mandatory to achieve the correct sampling structure for the internal processing.
Figure 11: Content Detection and SRC