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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.
15.1 HYBRID SYNC GENERATOR ACCEPTING MULTIPLE REFERENCES
One of the original concept behind the DXD line was to generate ‘legacy’ sync and PTP sync simultaneously so that all
equipment could be kept perfectly synchronized. But, for added flexibility, the DXD-‘s can also be set up to lock to any
‘legacy’ sync or to PTP as illustrated below. These choices are available in the Reference menu.
To reference an IP island to black burst
(traditional infrastructure), set the DXD-8 as follows:
-
Reference = INPUT A/Vid
-
Port Mode = On
-
Priority 1 = Low enough to win the BMCA (preferred master)
➡
The IP Island locks to the PTP port (Master state)
To reference a legacy island to PTP
(IP infrastructure), set the DXD-8 as follows:
-
Reference = PTP Mode
-
Port Mode = On
➡
The Legacy Island locks to BNC outputs (WC, AES, Video Sync, as required)
A/V OVER IP
EQUIPMENT
WORD CLOCK
PTP
GRANDMASTER
HOUSE SYNC
BLACK & BURST
