User manual

- 11 -
9 Sync Features
Provision for all Video/TC related signals (LTC, and Video Sync) is both on a 8-pin Mini-Din connector (for external connection)
and on a 16-pin header (for internal connection).
The Mykerinos board supports all standard Video formats such as PAL/NTSC, and all Tri-level HDTV formats as a reference
synchronization source.
For Mykerinos only:
The Video Out can also serve as VITC output and/or TC burn-in output.
VITC can only be extracted from standard video formats.
Here are the different possibilities offered by either the Video/TC bracket or breakout cable:
• NTSC/PAL Video Reference Input + HDTV reference sync source Input
• Wordclock I/O
• NTSC/PAL Video Output
• LTC (SMPTE/EBU) Timecode Input (balanced, nominal 2 Vp-p)
• LTC (SMPTE/EBU) Timecode Output (unbalanced, programmable level)
The breakout cable allows Mykerinos/-X to lock to a video “house sync” or a Wordclock reference and read & generate LTC.
For Mykerinos only:
This option also adds the capability to "burn" a Time code "insert" in the video output signal.
This interface has provision for one BNC input CVS1In, one BNC output CVS Out, one BNC input/output WCK, one XLR Female
for LTC input and one XLR Male for LTC output.
This interface is quite similar in functionality to the Video/TC bracket option. The main difference is in the video loop through mode,
which is not available with the breakout cable.
9.1 Signal Description
9.1.1 CVS1 IN
This input accepts a composite PAL/NTSC or Tri-level HDTV video signal that can be used by Mykerinos/-X to lock its audio
sampling rate to a video reference. The CVS1 input should be used for the main “house sync” or "black-burst" reference video signal.
For Mykerinos-X only:
A 75 Ohm termination can be applied on the input signal via software configuration.
For Mykerinos only:
It is also possible to use the CVS1 input as a VITC source (only standard PAL and NTSC rates).
Historically all the Mykerinos boards were shipped with jumper JP4 closed, which activates the 75Ω video termination on CVS1IN
signal. Dated from Mid-April 2006, Merging has decided to ship all the Mykerinos boards with JP4 open (MB1 S/N 15489 - …,
MB2 S/N 13364 - … and MB5 S/N 17449 - …).
See below an extract of the ECO MYK013 for a technical detailed explanation:
“Historically all the Mykerinos boards were shipped with jumper JP4 closed, which activates the 75Ω video termination on CVS1IN
signal.
Exception was made when a Mykerinos board is integrated into a Merging Workstation (Pyramix or VCube). In that case, this jumper
is left open by Merging to avoid a double video termination, one on the Mykerinos board (JP4) and one on the chassis rear panel
(switch).
Then, on most cases, the integration of the Mykerinos board into a Merging Workstation is left to the discretion of the Dealers
themselves or to an official assembly sub-contractor.
As many persons may be involved in this process, an error on JP4 may occur at different moments between the final assembly
process, the shipment department, and the integration into the Merging Workstation.
Due to the increasing percentage of Mykerinos boards integrated in a Merging chassis since 2005 and to avoid a double termination
on JP4, Merging has decided to ship all the Mykerinos boards (from serial numbers indicated above) with JP4 open, without