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

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

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.

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.

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

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.

HD490 AFD Software

Figure 1: AFD module web browser conﬁguration page

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.

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.

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.

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.

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