DXD-16 Universal Clock

A PTP Grandmaster with GPS, merged with a precision Reference Generator

DXD-16 Universal Clock combines PTP, GPS and legacy Sync to keep traditional Audio/ Video equipment and the IP network in perfect sync, making the DXD truly Universal

DXD-16 Universal Clock Front Panel
DXD-16 Hybrid System Diagram


Flexibility and easy integration
  • PTP Grandmaster
  • 4 independent Ethernet ports
  • Synchronizes to a PTP network, a GPS clock or a legacy reference
  • 6 legacy reference generators
  • 16 user-definable BNC outputs (WC, AES, VID SYNC or 10MHz)
  • 2 user-definable external reference BNC inputs with failover for redundancy
  • Remote control via web browser
  • Multiple options: GPS receiver, OCXO, Time Code

IEEE 1588 Network Sync

Barinstorm’s DXD-16 can be either a PTP Grandmaster, slave or Boundary Clock. PTP (Precision Time Protocol), defined in IEEE 1588, has been broadly adopted by manufacturers as a network synchronizing standard, which means that the DXD-16 can work in a number of systems. PTP profiles supported by the DXD-16 include AES67 and SMPTE 2059.

As a Boundary Clock, the DXD-16 can be a slave to a Grandmaster on one of its attached networks, synchronize its internal clocks to that Grandmaster, and distribute the same Grandmaster time in its role as PTP master to the remaining attached networks. Alternatively it can itself fulfill the function of Grandmaster and be PTP master on all attached networks.

Four Gigabit Ethernet ports (RJ45) are available on the DXD-16. The different ports can be used independently or as primary and secondary pairs. Each network connector supports an electrically and logically independent network, with the DXD-16 acting as a PTP timing bridge. The DXD-16 is not a network switch, and for security reasons, no information flows from any network port to any other.

DXD-16 Universal Clock Rear Panel

Customize Your Units with Universal Outputs

6 independent sync pulses and clocks are generated simultaneously by the DXD-16 and are routed to the 16 BNC universal outputs. Universal Outputs offer great flexibility compared to dedicated outputs as they can be configured for any of the generated legacy reference signals. This includes all standard SD and HD video sync formats (Black Burst and HD tri-level sync), word clock and AES-3id (at rates from 32 to 384 KHz, plus all the necessary pull-up/down, including 24:25 conversions, even VSO) and 10MHz.

Accurate and Versatile Clock Generator

A high-accuracy internal crystal oscillator (TCXO) provides a very stable frequency reference (+/- 1ppm). An optional oven-controlled oscillator (OCXO) can be installed. External legacy signals can also be used as reference, such as Word Clock, AES, Video Sync (SD & HD) or a 10MHz tone. The generated outputs have extremely low jitter. The output rates are independent from the reference rate which means that any rate can be extracted from any reference such as 59.97 from 25FPS for example.

DXD as a PTP Slave or PTP Grandmaster

  • It has the capability of being a PTP slave or a PTP Grandmaster and gives the operator exceptional flexibility:
  • As a stand-alone Master locked to its internal oscillator or GPS, it will provide sync to the network via PTP ports and to the legacy equipment via the The Brainstorm Unique Universal Outputs, simultaneously.
  • As a PTP master, the DXD can lock to an external sync source such as 10 MHz sine wave, Word Clock, AES or any standard Video Sync so the IP network locks to the existing sync sources.
  • As a PTP slave, it can generate legacy sync to keep the legacy equipment locked to the network.
DXD-16 Slave and PTP Grandmaster


A GPS receiver can be installed in either unit. GPS not only provides an extremely accurate timing source, it also enables DXD’s in remote locations to be locked and in phase with one another. Additionally, with the GPS option, the DXD will have a higher priority as a PTP Grandmaster.

Remote DXDs Locked to GPS Ref

Auto Fail-over

When using an external reference, a second source can be connected as fallback in case of failure. If the external reference becomes unusable, the DXD-16 continues generating, locked either to the alternate source or to the internal oscillator and re-locks to the reference when it reappears. These transitions occur smoothly and gradually with no sync shock to the system.

Battery Backup

The internal time-of-day clock is battery backed-up to keep it running while power is off.

Power Redundancy

An internal 100-240 VAC power supply is provided as is a DC input for an external 12VDC source. The unit can operate with either of these power sources and either can act as a back-up for the other with auto switch-over in the event of a failure.

Alarm and Remote

GPIO inputs (3) and outputs (3) are included.

All functions and settings can be monitored and altered via a web browser.

Here you can create the content that will be used within the module.

Remote Control – Coming Soon

  • Embedded web server
    • The DXD is accessed with a browser
      • Monitor the unit
      • Change settings
      • Upload firmware
  • Web page header includes:
    • Device info (name, serial no…)
    • REF info,
    • LOCK status
    • System Time (TOD)
    • GPS status
  • Unit is monitored via the Status page
  • Settings are changed via Configuration pages
DXD Remote Browser Interface

DXD-16 Specifications

PTP: 4 independant Gigabit Ethernet ports (RJ-45)
Configurable as a Grandmaster, slave or Boundary clock
Complies with IEEE-1588 V2 – options are available for V1 & AVB
Unicast / Multicast operation
Reference Generator:

Generates simultaneously up to 6 different rates in any of these formats:

  • Word clock – rates from 32 to 384 KHz
  • AES – rates from 32 to 96 KHz
  • Video sync:
    • NTSC/PAL black burst
      • 525/29.97/30i
      • 625/23.98/24/25i
    • HD tri-level sync
      • 720/23.98/24/25/29.97/30/50/59.94/60P
      • 1080/25/29.97/30i
      • 1080/23.98/24/25/29.97/30sF
      • 1080/23.98/24/25/29.97/30/50/59.94/60p
  • 10MHz
Universal Outputs: 16 outputs – in 6 different groups
BNC – 75Ω
Output signal: any of the generated legacy references
Oscillators: TCXO: +/- 1ppm
OCXO: +/-10ppb (option)
External Sync Sources: Word clock
Video sync (Black Burst or HD tri-level sync)
GPS (option)
Universal Inputs:

2 BNC input connectors w/ 75Ω termination switch
Accepts the following input signals:

  • Word clock
  • AES
  • Video sync (Black Burst or HD tri-level sync)
  • 10 MHz
Remote control: Web browser
3 GPIO inputs (DB-25)
Alarm: 3 GPIO outputs (DB-25)
Battery backup: An on-board battery keeps the internal time-of-day clock running while power is off
Presets: 10 presets can be programmed for quick recall
Display: 2.4” TFT LCD – 240 x 320 resolution
Power: AC: 100-240 VAC – Internal power supply with IEC inlet
DC: 12 VDC @ 5A – 4 pin circular input connector for external DC power source
Dual power sources with auto switch-over in case of failure for redundancy
Dimensions: 19” x 1.75” x 8”
GNSS/GPS Internal
Receiver (option):
The DXD-16 can be fitted with an Internal GNSS/GPS receiver.
The option includes an SMA antenna input connector. An antenna is required (not included).


How many different sync signals and rates can the DXD-16 generate simultaneously?

The DXD-16 can generate up to 6 different sync signals similtaneously in any combination of WC, AES, Video Sync or 10MHz. These sync signals are then sent to the 16 universal outputs. At any standard (and non-standard) rate.

Can the DXD-16 be set up to have 16 video sync outputs, 1080p tri-level sync for example?

Yes, the Universal Outputs can be set to any of the formats mentioned in FAQ #1 above, which means that, if 16 outputs of 1080p tri-level sync is what is needed, the DXD-16 can be set up to do just that.

Are the 4 DXD-16 Ethernet ports identical?

Each network connector supports an electrically and logically independent network. From a PTP standpoint, the 4 ports are identical but firmware updates and remote control are from port #4 only.

What is the purpose of the DXD-16 Real Time Clock (RTC)?

The RTC is a backup clock used by the DXD-16 to guarantee that Time-of-Day (TOD) will always be present. Here is how it works:

Just after power up, the DXD-16 transfers the date & time information from the RTC to the main System Time (TOD); when the DXD-16 locks to a new reference, if that reference does not have date & time, the TOD simply continues counting along its current time sequence; if it has date & time, that information is transferred to the TOD.

The RTC is battery-powered and is continuously running. It can be adjusted manually or set for automatic update from GPS or NTP in menu 8.2.

What is the best way to use the DXD-16 NTP client?

Menu 6.2 refers to a ‘Pseudo’ Client Mode because, when enabled, the NTP time is not automatically sent out to the server side. Instead, the Time-of-Day received from the external NTP server can be

  • transferred manually to the System Time (menu 6.2) or
  • transferred automatically to the Real Time Clock (menu 8.2).

When NTP is available, it is recommended to set it to update the RTC automatically in menu 8.2 (AUTO UPDATE RT CLOCK > NTP). This way, the DXD-16 will always start with a relatively accurate TOD (see previous FAQ on the RTC).