EEG HD490 Manuale utente

HD490 AFD Software
Modular Add-On for HD490 Closed
Caption Encoder
EEG Enterprises, Inc.
586 Main Street
Farmingdale, New York 11735
TEL: (516) 293-7472 FAX: (516) 293-7417
Copyright © EEG Enterprises, Inc. 2009-2012
All rights reserved.

HD490 AFD Software
Contents
1 Introduction 2
1.1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 AFD Code Reference 3
3 Using the HD490 AFD Software 4
3.1 Connecting to the Web-based Configuration . . . . . . . . . . 4
3.2 Settings on the Configuration Panel . . . . . . . . . . . . . . 6
3.2.1 Input Setup . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2.2 Output Setup . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2.3 Data Continuity . . . . . . . . . . . . . . . . . . . . . . 7
3.2.4 Preset Default . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.5 Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2.6 Add Code Swap Rules . . . . . . . . . . . . . . . . . . . 9
A Appendix A 10
A.1 Network Automation Protocol . . . . . . . . . . . . . . . . . . 10
Copyright 2009-2011, EEG Enterprises, Inc. All rights reserved.
The contents of this manual may not be transmitted or reproduced
in any form without the written permission of EEG.
The revision date for this manual is September 18, 2012.
Copyright © EEG Enterprises, Inc. 2009-2011 1

HD490 AFD Software
1 Introduction
1.1 System Overview
The EEG HD490 AFD Software is a flexible and versatile module running
on the HD490 Closed Caption Encoder that encodes and recovers Active
Format Descriptors (SMPTE 2016-1-2007). The HD490 can be used to
statically insert any legal AFD code on each video field in HD VANC,
or in a privately-defined custom XDS packet in HD or SD. The software
also provides low-latency dynamic switching between AFD sources, with
configurable priority between upstream encoded data, presets, and a
simple network automation protocol. The encoder also features an AFD
input/output switching matrix which allows users to pick desired input
sources and produce a single consistent AFD packet for each field of the
output signal. Additionally, the webtools allow the user to set code swap
rules that enable dynamic mapping from one AFD code at the input to
another at the output
The HD490 AFD software is ideal for complex broadcast environments
requiring continuous AFD data on programming, commercials and in-
terstitials, and more. The switching and data continuity features pro-
vide frame-by-frame AFD service confidence, and make the HD490 a
key piece in creating an AFD-enabled 100% HD workflow.
2 Copyright © EEG Enterprises, Inc. 2009-2011

HD490 AFD Software
2 AFD Code Reference
The table below shows the AFD codes that are defined by SMPTE stan-
dard for a 16x9 coded frame.
Table1: AFD codes and meanings
Active Format Description AFD Code
Unknown (assumed same as coded frame) 0000
Reserved 0001
Full frame 16:9 image 0010
Pillarbox 14:9 image, horizontally centered 0011
Letterbox image, vertically centered 0100
Reserved 0101
Reserved 0110
Reserved 0111
Full frame 16:9 image 1000
Pillarbox 4:3 image, horizontally centered 1001
Full frame 16:9 image, all image areas protected 1010
Pillarbox 14:9 image, horizontally centered 1011
Reserved 1100
Pillarbox 4:3 image, with alternative 14:9 center 1101
Full frame 16:9 image, with alternative 14:9 cen-
ter
1110
Full frame 16:9 image, with alternative 4:3 cen-
ter
1111
Copyright © EEG Enterprises, Inc. 2009-2011 3

HD490 AFD Software
3 Using the HD490 AFD Software
3.1 Connecting to the Web-based Configuration
Initial configuration of the AFD software tool is accessed through the
HD490 web-browser configuration page hosted on your encoder.
1. To access the configuration page, use a standard Ethernet cable
on the rear panel to connect your HD490 encoder to your local
network.
2. Use the front panel LCD screen and button pad to set the HD490
IP address and subnet mask. These must be valid settings for your
network, or you will not be able to communicate with the encoder.
3. Access the encoder’s web configuration pages from any PC on the
same local network by typing the IP address you assigned to the
encoder into a web browser.
4. From the main configuration page, there will be links to all of your
installed modules along the top bar. Click the top panel link labeled
‘AFD.’
5. The AFD configuration page you will see is shown in Figure 1.
4 Copyright © EEG Enterprises, Inc. 2009-2011

HD490 AFD Software
Figure 1: AFD module web browser configuration page
Copyright © EEG Enterprises, Inc. 2009-2011 5

HD490 AFD Software
3.2 Settings on the Configuration Panel
The web-based configuration page controls the input and output behav-
ior of the HD490 AFD tool. You must press the Apply button before any
configuration changes take effect. You can press the Revert button at
any time to before pressing Apply to cancel the changes that have not
gone into effect yet.
3.2.1 Input Setup
GPI Switches
Use this field to control the AFD function of each of the encoder’s GPI
switches. If an AFD code is selected, that code will be forced on the
output whenever the corresponding switch is triggered. Select ’Off’ to
reserve a GPI switch for caption relocation or other software modules.
For physical and electrical details on the GPI connector, please refer to
the HD490 product manual.
Network Automation Protocol
Check this box to enable AFD control through the encoder’s telnet-style
network automation socket. Only codes triggered from the GPI will have
higher priority than network automation data. Details on the automation
protocol can be found in the Appendix.
Upstream VANC Packet
Check this box to enable recovery of upstream encoded AFD codes in
VANC. If you uncheck the box all upstream VANC codes are ignored.
Upstream XDS Packet
Check this box to enable recovery of upstream encoded AFD codes in
XDS. To be recovered, upstream codes must have the same private packet
ID listed in the Output Setup packet ID field and be written with a com-
patible encoder device.
XDS Priority over VANC
Check this box to give recovered XDS codes priority over recovered
VANC codes when both are present. The default behavior (unchecked)
is to give VANC codes priority.
6 Copyright © EEG Enterprises, Inc. 2009-2011

HD490 AFD Software
Preset Default
Check this box to enable insertion of the static AFD code listed in the
Preset Default AFD code field. The preset code has the lowest priority
and will be inserted when all other sources of data are either disabled
or not active.
3.2.2 Output Setup
VANC Packet
Check this box to enable insertion of AFD VANC packets on the output
video. If this box is not checked, no VANC data will appear.
VANC Line
This field sets the line number that the VANC data will be inserted onto.
XDS Packet
Check this box to enable insertion of XDS packets containing AFD codes
on the output video. These will appear on Line 21 of an SD–SDI signal, or
in the 608 compatibility region of the EIA–708 CC packets on an HD-SDI
signal.
Packet ID
This field sets the private packet ID that will be used for both recovery
and insertion of AFD XDS packets. This legal range for this hex value is
D01 to D7F.
3.2.3 Data Continuity
VANC
This field sets the number of frames that the HD490 will continue out-
putting an AFD code from an upstream VANC source if that source stops
sending AFD data. This feature can be used to ensure that AFD data will
be encoded on every frame at the output even if an upstream source
is only encoded on same frames. However, using this feature creates a
switching latency between the time when upstream VANC AFD disap-
pears and time when it is replaced in the output by data from XDS or
the preset.
Copyright © EEG Enterprises, Inc. 2009-2011 7

HD490 AFD Software
XDS
This field sets the number of frames that the HD490 will continue out-
putting an AFD code from an upstream XDS source without seeing any
new upstream XDS packets. This feature is critical for use of the XDS
recovery feature because XDS cannot be sent on every frame due to
Line 21 bandwidth limitations. The hold delay will need to be set to
100 frames or more in many environments. This does create a switch-
ing latency between the time when the last XDS AFD packet appears
in a stream and the time when that code is replaced in the output sig-
nal by data from a preset or VANC (if XDS Priority over VANC is set).
Therefore, the hold delay should be set to the lowest value that gives
continuous operation in your environment.
3.2.4 Preset Default
AFD Code
This field selects the AFD code that will be inserted statically when no
other source of AFD data is recovered. The text below the selection box
gives the definition of the selected code.
3.2.5 Status
The status section auto-refreshes approximately once every 2 seconds
to provide up-to-date information about the unit.
Current Source
This field reports the source of the AFD code that is currently being
encoded to the output video signal. You will see one of PRESET, XDS,
VANC, TCP (network automation), GPI, TRANSPARENT, or STRIP. If you
see TRANSPARENT in the current source window, it means that the
upstream VANC is passing through completely unchanged. If you see
STRIP in the current source window, it means that upstream VANC is
being removed and nothing is being inserted in its place.
AFD
This field reports the AFD code that is currently being encoded to the
output video signal.
8 Copyright © EEG Enterprises, Inc. 2009-2011

HD490 AFD Software
3.2.6 Add Code Swap Rules
The code swap rules tool enables dynamic mapping from one AFD code
at the input to another at the output. This feature is useful in situations
where other equipment has automatically stamped the video signal with
undesirable AFD codes, or for any situation in which problematic AFD
codes arrive on the signal. If there is no code swap rule specified for
a code, the default behavior is to show the code on the output signal
whenever it appears on the input signal.
To select the incoming AFD code to be switched, use the drop down list
located underneath the Incoming Code label and click on the desired
code. Then, use the drop down list located underneath the Switch To
label to select the AFD code you would like the incoming code to be
switched to. Click on the Add button to the right of the two drop down
lists to add the code swap rule.
Once a code swap rule has been added, it appears in the table labeled
Existing Rules, where the Incoming and Outgoing codes are listed next
to each other, followed by a Remove button. To delete a code swap rule,
go to the line in the table where the swap rule is and click the Remove
button to the right of the code swap rule.
Copyright © EEG Enterprises, Inc. 2009-2011 9
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