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DXD/PTP
PTP option for the DXD-8 Universal Clock
DXD/GPS
GPS option for the DXD Universal Clock
DXD/OCXO
OCXO option for the DXD Universal Clock
Operations manual
Version 2.10
January 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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Table of Contents
Related Manuals for Brainstorm Electronics DXD/PTP
Summary of Contents for Brainstorm Electronics DXD/PTP
- Page 1 OCXO option for the DXD Universal Clock Operations manual Version 2.10 January 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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Page 2: Table Of Contents
DXD/PTP/GPS User Manual (rev 2.10) Table of Content 1. Introduction ..........................2. Installation ..........................2.1 DXD/PTP INSTALLATION (Firmware) - DXD-8 ONLY ..........2.2 DXD/GPS & DXD/OCXO INSTALLATION (Hardware) ..........3. Reference & Sync Menus ......................3.1 REFERENCE MENU (MENU 1.1) ................ - Page 3 DXD/PTP/GPS User Manual (rev 2.10) Page 3 11.2.3 PTP STATUS PAGE .................... 12. General Information on PTP ....................12.1. TIME AND PHASE ....................12.2. WHAT IS PTP? ....................12.3. A/V OVER IP APPLICATIONS ................12.4. PTP DESCRIPTION ..................... 12.5. SELECTING A GRANDMASTER ................
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Page 4: Introduction
2.1 DXD/PTP INSTALLATION (FIRMWARE) - DXD-8 ONLY Before installing the DXD/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
DXD/PTP/GPS User Manual (rev 2.10) Page 5 3. Reference & Sync Menus 3.1 REFERENCE MENU (MENU 1.1) Two new choices are available for reference selection based on the installed options: GPS and PTP Mode. GPS is straightforward, like the other references available to the DXD-8. When selected, it becomes the DXD reference. If GPS reception drops out, the DXD will switch to internal crystal until GPS reception resumes. -
Page 6: Ptp - Clock / Grandmaster (Menu 5.2)
Page 6 DXD/PTP/GPS User Manual (rev 2.10) 4.2 PTP - CLOCK / GRANDMASTER (MENU 5.2) This menu lets you set the following fields for the Grandmaster PTP port. • Domain: 0 to 127; default = 0 • Priority 1: 0 to 255 •... -
Page 7: Gps Receiver
DXD/PTP/GPS User Manual (rev 2.10) Page 7 5. GPS Receiver The GPS menus will only appear if the optional GPS receiver (model DXD/GPS) is installed in your DXD-8. Otherwise the following message will appear: DXD/GPS NOT INSTALLED The GPS Receiver is required for these menus. -
Page 8: Gps Menus
Page 8 DXD/PTP/GPS User Manual (rev 2.10) 6. GPS Menus 6.1 SATELLITES SELECTION (MENU 6.1) The DXD/GPS receiver is a multi-GNSS (Global Navigation Satellite System) timing receiver able to receive concurrently the signals of multiple navigation satellite systems. GPS was the first GNSS system deployed but today, other satellite navigation systems are in operation such as GLONASS of Russia, Galileo of Europe, BeiDou (Compass) of China. -
Page 9: Dxd/Ocxo
DXD/PTP/GPS User Manual (rev 2.10) Page 9 7. DXD/OCXO The DXD/OCXO is an optional Oven-Controlled Crystal Oscillator for the DXD series. It achieves a very high frequency stability providing greater long-term time and TOD accuracy (+/-10ppb, equivalent to less than +/-10 frames per year). The DXD/OCXO is particularly recommended when using the DXD/GPS option as the greater stability of the OCXO will minimize drift during long GPS dropouts. -
Page 10: Rtc (Real Time Clock)
Page 10 DXD/PTP/GPS User Manual (rev 2.10) 8.1 RTC (Real Time Clock) A backup clock, called the RTC (Real Time Clock) is included in the DXD. It is set at the factory (date & time) and runs continuously, even when the unit is turned off as it is powered by an internal battery. -
Page 11: Time Menus
DXD/PTP/GPS User Manual (rev 2.10) Page 11 9. Time Menus 9.1 TIME STANDARDS (MENU 7.1) The following time standards are available on the DXD-8 in addition to the local time: • TAI: International Atomic Time, an atomic coordinated time that has been measuring time continuously since 1955 with no leap seconds. -
Page 12: Time & Date Display (Menu 7.3)
Feature Key has not been found. 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. -
Page 13: Display
DXD/PTP/GPS User Manual (rev 2.10) Page 13 11. Display 11.1 Main Rotation 11.1.1 MAIN ROTATION FOOTER • Reference: When PTP Mode is selected in the reference menu, the display in the Main Rotation pages indicates REF: PTP on the left of the reference line with 4 different options to its right: “Master: External”... -
Page 14: Status
Page 14 DXD/PTP/GPS User Manual (rev 2.10) 11.2 Status Pages Status pages are available on the main display while in the STATUS mode. To activate the STATUS mode, press the [ STATUS key. The Status LED illuminates to confirm your selection. This firmware update includes the following new Status pages. -
Page 15: General Information On Ptp
DXD/PTP/GPS User Manual (rev 2.10) Page 15 12. General Information on PTP 12.1. 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 16: Selecting A Grandmaster
Page 16 DXD/PTP/GPS User Manual (rev 2.10) 12.5. 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 17: Delay Measurement Mechanism
DXD/PTP/GPS User Manual (rev 2.10) Page 17 12.7. 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 18: Ptp Port States
Page 18 DXD/PTP/GPS User Manual (rev 2.10) 13. 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 19: Positional Change From An External Ptp Grandmaster
DXD/PTP/GPS User Manual (rev 2.10) Page 19 14. 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 20: Typical Ptp Use
Page 20 DXD/PTP/GPS User Manual (rev 2.10) 15. 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 21: Distributed Ptp Vs. Individual Grandmasters With Gnss
DXD/PTP/GPS User Manual (rev 2.10) Page 21 15.2 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 22: Guidelines For Configuring Ptp (Precision Time Protocol)
Page 22 DXD/PTP/GPS User Manual (rev 2.10) 16. 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
DXD/PTP/GPS User Manual (rev 2.10) Page 23 16.3 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 DXD/PTP/GPS User Manual (rev 2.10) 17.3 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
DXD/PTP/GPS User Manual (rev 2.10) Page 25 18. Appendix 18.1 Appendix A: Installing the DXD/GPS Installation should be performed carefully by a qualified person, using the usual precautions. To avoid electrostatic discharges, be sure to ground yourself properly. 1. Disconnect power 2. -
Page 26: Appendix C: Gnss Antenna Recommendations
Page 26 DXD/PTP/GPS User Manual (rev 2.10) 18.3 Appendix C: GNSS Antenna Recommendations Below are recommendations for active and passive antennas. Both can be used with the DXD/GPS. However, the distance between the antenna and the receiver is an important factor in selecting the proper antenna. The GPS signal is very weak and needs to be amplified to travel down a long cable to the receiver. -
Page 27: Appendix D: Factory Presets
DXD/PTP/GPS User Manual (rev 2.10) Page 27 18.4 Appendix D: Factory Presets The following are the factory default settings for the new DXD menus: BNC INPUT COLOR FRAMING BNC INPUT TIME JAM SOURCE BNC INPUT TIME JAM RESYNC 5 msec... - Page 28 Page 28 DXD/PTP/GPS User Manual (rev 2.10)