greenMachine Testor AV Sync Analyzer User Guide

greenMachine Testor AV Sync Analyzer

Product Information

GreenMachine Titan Broadcast Television Equipment

The GreenMachine Titan is a broadcast television equipment designed and manufactured by LYNX Technik AG. It is a versatile and powerful solution for managing video and audio signals in a broadcast environment. The product is subject to change without notice, and no part of the user manual can be reproduced or transmitted without the express written permission of LYNX Technik AG. LYNX Technik AG may have patents, trademarks, copyrights, or other intellectual property rights covering the subject matter in this document.

Product Usage Instructions

Introduction

The GreenMachine Titan is designed for use in a broadcast environment, where it can be used to manage video and audio signals. Before using the product, it is important to familiarize yourself with the user manual and any updates or changes that may have been made since its publication.

Application

The GreenMachine Titan can be used for a variety of applications, including video and audio routing, signal processing, and signal conversion. The product is designed to work with a range of formats and can be customized to meet the needs of specific broadcast environments.

Product Setup Requirements

Before using the GreenMachine Titan, ensure that you have all the necessary components and equipment in place. This includes compatible cables, power sources, and any additional hardware required for your specific application. Refer to the user manual for more information on setup requirements.

Product Quick-Setup Guide

The quick-setup guide provides step-by-step instructions on how to deploy the GreenMachine Titan for different applications. The guide includes information on supported formats, deploying Testor Constellation, and AV Sync Generator. Refer to the user manual for more detailed instructions on each of these topics.

Supported Formats

The GreenMachine Titan supports a wide range of video and audio formats, including SD, HD, and 4K resolutions. The product can also handle a variety of signal types, such as HDMI, SDI, and composite video. Refer to the user manual for a complete list of supported formats.

Deploying Testor Constellation

Testor Constellation is a powerful tool for testing and verifying video signals. The GreenMachine Titan can be used to deploy Testor Constellation and perform tests on incoming signals. Refer to the user manual for instructions on how to deploy Testor Constellation using the GreenMachine Titan.

AV Sync Generator

The GreenMachine Titan includes an AV Sync Generator that can be used to ensure that audio and video signals are synchronized correctly. The AV Sync Generator can be configured to work with different signal types and can be customized to meet the needs of specific applications. Refer to the user manual for instructions on how to configure the AV Sync Generator.

For more information on using the GreenMachine Titan, refer to the user manual or contact LYNX Technik AG support.

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 the 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.

Introduction

This quick reference guide provides information related to the greenMachine Testor AV Sync feature. The function of an AV Sync is to generate a specific test signal overlay with embedded audio on the generator side and to detect the presence of an AV sync test signal and measure/verify the audio/video time delays on the analyzer side. It is also used for verifying if the audio channels are swapped.

The AV Sync Generator allows multiple existing test signals in gM Testor constellation to be be overlayed with a specific AV Sync overlay. The generated Test Signal includes both video and audio markers, which use the “GLITS” (BBC) audio test signal standard for that purpose. The video marker consists of a horizontal black line in the center of the video image, flashing into one frame every four seconds (the “Black Flash”). In addition, two black bars moving towards each other and and colliding in the middle (commonly referred to as “Clap Bars”) indicate the upcoming Black Flash to the watcher. The audio markers are small gaps in the tone that begin with a precise timing relationship to the Black Flash. The used Audio Signals work with 4 different frequencies, to be able to detect audio channel swaps.

The AV Sync Analyzer is able to measure signals with the generated AV Sync overlay. Measurements can be shown via GUI as well as in the form of measurement overlays on the output of the analyzer. The measurement results refresh every 4 seconds. The analyzer enables simultaneous timing measurement of up to four AV sync input test signals (in Testor Quad mode) in LynxCentraal or via 3° party applications using RemotelF, a LYNX Technik Protocol. Additionally, in Testor Quad mode one input can be overlayed with the sync measurements and routed to the SDI Out 4 or to the optical/HDMI ports. In Testor 4K mode, for quad-link 12G signals, the output with overlay will be available on all ports (electrical, optical, HDMI.

For single link 12G signal, the output will be available on Out 4 electrical port and Opt-Out 2 optical port. In Testor quad mode, the overlay feature is available on only one processing channel, while the remaining inputs can be used as additional simultaneous measurement inputs. Testor 4K mode consists of only one processing channel and therefore when AV Sync overlays are activated, the test generator functionality will be disabled. This Quick Reference Guide is designed to help you setup a greenMachine Testor AV Sync and provides step- by-step instruction on its operation.

Application

The application of AV Sync as below:

1. Allows generating and measuring of audio and video timing in a broadcast signal chain
2. It allows an operator to identify AV timing mismatch via GUVoverlay promptly and make adjustments accordingly.
3. It avoids guesswork and provides a more accurate measurement. It reduces unwanted errors significantly.

Setup requirements

Before setting and configuring the Testor AV Sync Analyzer, ensure the following requirement are met:

1. The greenMachine Titan version used is 903 and above.
2. The LynxCentraal version installed must be 1.1.4 for Windows
3. The T estor constellation is deployed on the green Machine.

Note: The Testor AV Sync is supported on both Testor 3G Quad and 4K mode.

Quick-Setup Guide

Supported Formats

The greenMachine Testor AV sync supports the same video format as supported by the greenMachine Testor constellation.

Testor Quad Mode

Testor 4K Mode

Deploying Testor Constellation

A new greenMachine Testor comes with the pre-deployed Testor constellation. In case the constellation type needs to be changed, follow the below steps:

AV Sync Generator

• The Testor AV Sync Generator allows to add AV Sync test signal requirements to some of the existing test signals in the Testor constellation.

Enable AV Sync Generator in LynxCentraal

• The behavior and setup for the AV Sync Test Generator works the same way in Testor Quad and 4K mode. The example below shows the Quad mode.

Step 1: Go to Green> Control> Main> Video; the following page is displayed:

Step 2: Zoom into the global section to the Generator tab of the channel, by double-clicking on the Generator tab you like to use. The example below shows the first channel:

Step 3: Choose the test signal, you like to use and enable the AV Sync Generator with the corresponding On/Off switch in the settings of the test signal.

• The greenMachine will now overlay the AV Sync Overlay to the test signal fill the audio channels automatically with the different dinus tones.

AV Sync Generator supported test signals

Note: The test patterns Convergence Grille, EBU AV Sync, Flash Black, Flash White, Four-Level PLUGE, Full field Black, HOR PLUGE BT.814 HLG, HOR PLUGE BT.814 PO, Persistence Test and Strobe are not supported by the AV Sync Generator.

AV Sync Analyzer

• The Testor AV Sync Analyzer allows viewing of timing sync of a AV sync input test signal via the output overlay of the greenMachine or via LynxCentraal. The third party application can also use RemotelF for timing measurement information.

_ Note: _The Testor Quad mode consists of four 3G processing channel while Testor 4K mode consists of one 12G single link processing channel. The Testor AV Sync analyzer overlay is supported only on one channel.

Viewing AV timing sync on greenGUI

• A user can get the AV timing sync information on the greenGUI by following the below steps:

Testor Quad Mode

Step 1: Go to Control> Main> Video; the following page is displayed:

Step 2: Connect the AV sync test signal on any SDI input port 1-4. The example below shows the SDI input connected to input port 1.

_ Note: _An AV sync input test signal, for AV sync timing analysis, is only supported on Input 1 to 4 and the optical inputs. The HDMI input does not support this functionality yet.

Step 3: Zoom into the AV timing block on the corresponding processing channel to which the AV sync input test signal is connected:

Step 4: The AV timing gives the following information:

1. Embedded SDI AV timing
2. External Audio AV timing

Step 5: The Embedded SDI tab will provide timing information of the embedded audio on the AV sync input test signal. The information will be displayed based on the scenarios discussed below:

• Scenario 1: An AV sync test signal connected at the input source:

• In this scenario, the left column provides information on whether the audio channel consists of a “Glits” tone or not.

• If the audio channel frequency does not match with the Glits tone frequency, then the actual audio channel frequency will be displayed as shown in the picture below:

• An audio channel swap can be easily identified by checking the sequence of the audio group and the left and right channels, as shown below:

• In the example above, AES 2 (Group B) is swapped with AES 1 (Group A).

• The middle section will represent the audio early or audio delay graphically.

• The “Sync” column will provide the audio delay measurement in ms. Delayed audio will have a measurement in +ms and early audio will have a measurement in -ms.

Scenario 2: A video signal without a AV sync test signal connected to the input (No Glitz test tone present)

• In this scenario, the left column will indicate the actual frequency in Hz of the audio channels but will not indicate the Glitz tone.
• The “Sync” column will indicate NIA as the AV sync test signal is absent.

Scenario 3: No si nal connected at the in ut source.

• In this scenario, the left column will indicate “OHz,” and the Sync column will display N/A.

Note: When an existing AV sync test signal is disconnected from the greenMachine, the values displayed in the AN timing will remain and will not reset to o. This may also happen to the audio channels that are not present on the SDI. This is a known issue and will be resolved in subsequent releases.

Step 6: To get the external audio timing information, click on External Audio, the following page will be shown:

Testor Quad Mode

Testor 4K Mode

• The external audio page will provide AV sync information of 8 external Analog/ digital audio channels.

Testor 4K Mode

Step 1: Go to Control> Main> Video; the following page is displayed:

Step 2: Connect a AV sync test signal on SDI input port IN 1-4 for 2SI 12G SDI 2SI or IN 4 for 12G SDI.

• Configure the UHD Controls information as per the connected SDI signal in the settings that could be found at the location hi listed below:

Note: Ensure that the correct input source is selected via Input crossbar.

The link is connected to the UHD Control In container as highlighted below:

Step 3: Zoom into the AV timing block as shown below:

The AV timing gives the following information:

1. Embedded SDI AV timing (Link 1 to Link 4)
2. External Audio AV timing

Step 4: The Embedded SDI (Link 1 to 4) tab will provide timing information of the embedded audio on the AV sync test signal. A 1 2G SDI signal supports 64 audio channels. These audio channels are arranged in 4 groups with 16 channels each. Each rou is dis la ed in a se arate tab, as shown below:

Step 5: The External Audio AV Timing provides sync information on the external audio interface:

Viewing AV timing sync via overlays

A user can get the AV timing sync information via overlays by following the below steps:

Step 1: On the Control> Main> Video page, zoom into the AV Sync block inside the Global container as shown below:

• For Tester Quad Mode
• For Tester 4K mode

Step 2: Select AV Sync overlay source from the drop-down options, as shown below:

• For Tester Quad Mode
• For Test or 4K Mode

The AV Sync overlay source can also be configured by selecting the signaling flow from the GUI as shown below:

Note: When AV Sync Overlay Source is selected, the AV Sync block will be automatically connected to Path 4 output in Testor Quad mode or Path 1 in Testor 4K Mode. The connected path can no longer be used as a Test Generator.

Step 3: Select Overlay Select in Testor Quad Mode or Overlay Select UHD in Testor 4K Mode from the drop-down options as shown below:

• For Test or Quad Mode
  • Select Embedded SDI for the audio sync information overlay embedded in the SDI signal. Select External AES for the audio sync information overlay on the external audio interface.
• For Testor 4K Mode
  • Select Embedded SDI Link 1 to 4 for the audio sync information overlay embedded in the SDI signal. Select External AES for the audio sync information overlay on the external audio interface.

Step 4: Optional: Choose “Overlay Auto Hide” if you like to have the Overly hided, if no compatible AV sync test signal is connected to the channel input, on the check-box shown below:

Step 5: Connect output port for monitoring.

Testor Quad Mode: In Testor Quad mode, the electrical output for the AV Sync Analyzer overlay is fixed to OUT 4. Alternatively, the HDMI and optical ports can also be routed via output video crossbar to receive AV Sync measurement overlay. Electrical output 1 to 3 are fixed for the Test generator purpose.

Testor 4K Mode: In Testor 4K Mode, for signals up to 3G, the selected overlay will be displayed on all the output ports including electrical, HDMI and optical ports. For 12G SDI single link, the video signal with the selected overlay will be available on OUT 4 electrical port, Optical OUT 2 and HDMI out.

Step 6: Connect Out 4 port for monitoring and viewing the AV Sync information overlay as shown below:

Note: If the AV Sync overlay output is enabled, the reference source automatically jumps to the selected Overlay Video Source. If you want to use the Overlay feature with only one greenMachine, there must be a clock/sync uncupled device (e.g. a Frame Sync) between gM Output and gM Input.

Technical Support

• If you have any questions or require support, please contact your local distributor for further assistance.
• Technical support is also available from our website: http://support.lynx-technik.com/
• Please do not return products to LYNX without an RMA. Please contact your authorized dealer or reseller for more details.
• More detailed product information and product updates may be available on our website: www.lynx-technik.com

Contact Information

Please contact your local distributor; this is your local and fastest method for obtaining support and sales information. LYNX Technik can be contacted directly using the information below.

LYNX Technik AG

• Brunnenweg 3
• D-64331 Weiterstadt Germany
• Phone: +49 (0)6150 18170
• Fax: +49 (0)6150 1817100
• info@lynx-technik.com
• www.lynx-technik.com

LYNX Technik, Inc.

• 26366 Ruether Ave,
• Santa Clarita CA, 91350 USA
• Phone: (661) 251 8600
• Fax: (661) 251 8088
• info@lynx-usa.com
• www.lynx-usa.com

Lynx-Technik Pte Lt

• 114 Lavender Street
• CT Hub2 #05-92 Singapore 338729
• Phone: +65 6702 5277
• Fax: +65 6385 5221
• Mobile: +65 97127252
• infoasia@lynx-technik.com

LYNX Technik manufactures a complete range of high-quality modular interface solutions for broadcast and Professional markets, please contact your local representative or visit our website for more product information.

© 2023 LYNXTechnik AG

References

• Support : LYNX Technik AG - Technical Support
• LYNX Technik AG
• LYNX Technik AG
• LYNXTechnik USA - LYNX Technik USA

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