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Brainstorm Electronics DXD8 Operation Manual

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DXD8/PTP
PTP Firmware option for the DXD-8 Universal Clock
Operations manual
Version 2.15
October 2021
All materials herein © Brainstorm Electronics, Inc.
Brainstorm Electronics reserves the right to change or modify the contents of this manual at any time.
Brainstorm Electronics, Inc.
www.brainstormtime.com

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Summary of Contents for Brainstorm Electronics DXD8

  • Page 1 PTP Firmware option for the DXD-8 Universal Clock Operations manual Version 2.15 October 2021 All materials herein © Brainstorm Electronics, Inc. Brainstorm Electronics reserves the right to change or modify the contents of this manual at any time. Brainstorm Electronics, Inc. www.brainstormtime.com...

  • Page 2: Table Of Contents

    Page 2 DXD8/PTP User Manual (rev 2.15) Table of Content 1. Introduction ..........................2. Installation ..........................3. Reference & Sync Menus ......................3.1 REFERENCE MENU (MENU 1.1) ................3.2 SYNC PARAMETERS (MENU 1.2) ................4. PTP Menus ..........................4.1 PORT MODE (MENU 5.1) ..................
  • Page 3 DXD8/PTP User Manual (rev 2.15) Page 3 11. Positional change from an External PTP Grandmaster ............... 11.1 JUMP TO RELOCK ....................12. Typical PTP use ........................12.1 HYBRID SYNC GENERATOR ACCEPTING MULTIPLE REFERENCES ......12.2 DISTRIBUTED PTP VS. INDIVIDUAL GRANDMASTERS WITH GNSS .......

  • Page 4: Introduction

    2. Installation Before installing the DXD8/PTP, be sure to update your DXD-8 with the latest firmware, available on the Brainstorm website. When you purchased your DXD/PTP, you received a unique authorization key, a series of 4 numbers, separated by periods.

  • Page 5: Reference & Sync Menus

    DXD8/PTP User Manual (rev 2.15) Page 5 3. Reference & Sync Menus Installing the PTP option will affect some of the menus and offer new choices. Please refer to the DXD-8 manual for instructions on how to navigate through the menus and how to change some of the settings..

  • Page 6: Ptp - Clock / Grandmaster (Menu 5.2)

    Page 6 DXD8/PTP User Manual (rev 2.15) 4.2 PTP - CLOCK / GRANDMASTER (MENU 5.2) Menu 5.2 lets you set the following fields for the PTP port. • Domain: 0 to 127; default = 0 • Priority 1: 0 to 255 •...

  • Page 7: Port Timing (Menu 5.4)

    DXD8/PTP User Manual (rev 2.15) Page 7 4.4 PORT TIMING (MENU 5.4) • Announce Interval: -3 to 4 (1/8sec - 16sec) Sets the rate at which the master will send Announce messages. These messages are used to determine which device will be the Grandmaster using the BMCA (Best Master Clock Algorithm) Per IEEE 1588 this value should be uniform throughout a domain.

  • Page 8: Rtc (Real Time Clock)

    Page 8 DXD8/PTP User Manual (rev 2.15) IMPORTANT NOTE When using a reference without date & time information such as video sync, there will be a date & time adjustment in the TOD count so that video frame edges are correctly aligned. The internal TOD is always creating internal frame references that are aligned as required with Jan 1, 1970 (PTP epoch).

  • Page 9: What Is Required For A Time Jam To Ptp

    DXD8/PTP User Manual (rev 2.15) Page 9 5.2.3 WHAT IS REQUIRED FOR A TIME JAM TO PTP? 1. Reference must be BNC A or BNC B (menu 1.1). The BNC input must be set properly in menus 2.1 and/or 3.1.

  • Page 10: Ltc Generator 1 & 2 (Menus 8.2 & 8.3)

    LTC FEATURE KEY NOT FOUND To purchase please contact your Brainstorm dealer. Feature Keys are unique for each serial number. Please refer to the DXD/LTC manual for information. To purchase the DXD/LTC, please contact you Brainstorm Electronics dealer. 8. Display 8.1 Main Rotation 8.1.1 MAIN ROTATION FOOTER...

  • Page 11: Status

    DXD8/PTP User Manual (rev 2.15) Page 11 • REFERENCE SOURCES - PTP Mode When PTP Mode is selected in the reference menu, the Reference Sources page indicates the settings and the state of the PTP port in colors for easy identification as well as the PTP domain to its right.
  • Page 12 Page 12 DXD8/PTP User Manual (rev 2.15) • 8.2.3 PTP PORT STATUS PAGE • The upper section of the PTP Port Status page includes: the mode of the port the PTP State the domain number, the delay mechanism, the PTP version and the PTP profile selected for the port.

  • Page 13: General Information On Ptp

    DXD8/PTP User Manual (rev 2.15) Page 13 9. General Information on PTP 9.1. TIME AND PHASE Precise time information has always been crucial in traditional production and broadcast environments. To keep the different video and audio sources synchronized properly, two different references were typically used, one providing time information (time code), the other phase information (black &...

  • Page 14: Selecting A Grandmaster

    Page 14 DXD8/PTP User Manual (rev 2.15) 9.5. SELECTING A GRANDMASTER An algorithm called the BMCA (Best Master Clock Algorithm) is used to determine which clock will be used as the PTP Grandmaster. As defined in the IEEE 1588 standard, this selection is done autonomously based on the following criteria and in...

  • Page 15: Delay Measurement Mechanism

    DXD8/PTP User Manual (rev 2.15) Page 15 9.7. DELAY MEASUREMENT MECHANISM To synchronize clocks, the delay between the clocks must be known. There are two mechanisms to measure the delay called End to End (E2E) and Peer to Peer (P2P).

  • Page 16: Ptp Port States

    Page 16 DXD8/PTP User Manual (rev 2.15) 10. PTP Port States When PTP MODE is selected as the reference, the REFERENCE SOURCES Status Display page indicates the PTP state of the DXD-8. This is similar to the PTP PORTS page on the DXD-16 where all 4 ports are shown.

  • Page 17: Positional Change From An External Ptp Grandmaster

    DXD8/PTP User Manual (rev 2.15) Page 17 11. Positional change from an External PTP Grandmaster When the DXD is referenced to an external PTP Grandmaster and a disruption or an error causes a positional change in the PTP Grandmaster, the DXD will respond differently based on how it has been set by the operator.

  • Page 18: Typical Ptp Use

    Page 18 DXD8/PTP User Manual (rev 2.15) 12. Typical PTP use The DXD-8 was designed to be a reliable high precision sync generator as well as a very flexible one. Several features were incorporated in the design with flexibility in mind such as the universal outputs. For PTP, several options are available giving the user many choices.

  • Page 19: Distributed Ptp Vs. Individual Grandmasters With Gnss

    DXD8/PTP User Manual (rev 2.15) Page 19 12.2 DISTRIBUTED PTP VS. INDIVIDUAL GRANDMASTERS WITH GNSS In this example, DXD-8’s are installed in several studios. In order to keep them in sync, 2 different options are available: Distributed PTP Individual Grandmasters with GNSS reference The first illustration shows distributed PTP where all the DXD-8’s are PTP slaves to an external Grandmaster;...

  • Page 20: Ptp V1 (Ieee Std 1588-2002) Implementation - Firmware Option

    13. PTP v1 (IEEE Std 1588-2002) Implementation - Firmware Option The translation between PTPv1 and PTPv2 is implemented as specified in section “18. Compatibility Requirements” of IEEE Std 1588-2008 (PTPv2). It is available on the DXD-8 with the PTP option (DXD8/PTP). 13.1 SELECTING PTP V1 PTPv1 mode is selected in the PTP menu PORT CONTROLS.

  • Page 21: Avb - Ieee 802.1As (Gptp) Firmware Option

    2020 (802.1AS-2020). AVB support is optional on the DXD-8 and is purchased separately (DXD8/AVB). After the AVB Feature Key has been installed in menu 10.5, the 2 versions of AVB can be selected in the Port Control menus under PTP Version.

  • Page 22: Guidelines For Configuring Ptp (Precision Time Protocol)

    Page 22 DXD8/PTP User Manual (rev 2.15) 15. Guidelines for configuring PTP (Precision Time Protocol) Only a few years ago, setting up a network was not a task most audio or video engineers were concerned with. This was the responsibility of the IT department. Nowadays, it has become an important part of more and more installations and, as we move towards A/V over IP, careful advance planning of the network and proper configuration is necessary, demanding a new...

  • Page 23: Networking Hardware

    DXD8/PTP User Manual (rev 2.15) Page 23 15.3 NETWORKING HARDWARE • PTP-aware: PTP is implemented in some networking hardware often referred to as ‘PTP-aware’, meaning either as an IEEE 1588 “Transparent Clock” or “Boundary Clock”. This includes switches and routers. Transparent Clocks and Boundary Clocks are designed to improve accuracy particularly in large and busy environments.

  • Page 24: Time Jam Time Out

    Page 24 DXD8/PTP User Manual (rev 2.15) 16.3 TIME JAM TIME OUT An error message will appear when the conditions for a requested Time Jam are not met. 1. Menu 1.1: Reference must be Input A or Input B. ERROR 2.

  • Page 25: Appendix

    DXD8/PTP User Manual (rev 2.15) Page 25 17. Appendix 17.1 Appendix A: Factory Presets The following are the factory default settings for the new DXD menus: 1.2 SYNC PARAMETERS BNC INPUT COLOR FRAMING BNC INPUT TIME JAM SOURCE BNC INPUT TIME JAM RESYNC...

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