merging mykerinos Manuel D’Utilisation
Merging Technologies
9
Mykerinos User Manual
7 Sync Features
Provision for all Video/TC related signals (VITC, 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 Video Out
can also serve as VITC output and/or TC burn-in output.
The Mykerinos board supports all standard Video formats such as PAL/NTSC, and all Tri-level HDTV
formats as a reference synchronization source. 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/VITC Video Reference Input + HDTV reference sync source Input
connector (for external connection) and on a 16-pin header (for internal connection). The Video Out
can also serve as VITC output and/or TC burn-in output.
The Mykerinos board supports all standard Video formats such as PAL/NTSC, and all Tri-level HDTV
formats as a reference synchronization source. 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/VITC Video Reference Input + HDTV reference sync source Input
• NTSC/PAL/VITC Video 2 Input or Wordclock I/O
• NTSC/PAL/VITC 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 to lock to a video “house sync” or a Wordclock reference, read &
generate VITC and read & generate LTC. 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
Input/Output CVS2In/WCK, one BNC output CVS Out, one XLR Female for LTC input and one XLR
Male for LTC output.
It is quite similar in functionality to the Video/TC bracket option. The main difference is in the loop
through mode, which is not available with the breakout cable. Therefore the standard recommended
setup is to have JP4 closed on the Mykerinos card to terminate the CVS1In signal with 75 Ohms on
board and to leave open the similar jumper on the Video/TC bracket (to avoid double termination).
The breakout cable allows Mykerinos to lock to a video “house sync” or a Wordclock reference, read &
generate VITC and read & generate LTC. 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
Input/Output CVS2In/WCK, one BNC output CVS Out, one XLR Female for LTC input and one XLR
Male for LTC output.
It is quite similar in functionality to the Video/TC bracket option. The main difference is in the loop
through mode, which is not available with the breakout cable. Therefore the standard recommended
setup is to have JP4 closed on the Mykerinos card to terminate the CVS1In signal with 75 Ohms on
board and to leave open the similar jumper on the Video/TC bracket (to avoid double termination).
7.1 Signal
Description
7.1.1 CVS1 IN
This input accepts a composite PAL/NTSC or Tri-level HDTV video signal that can be used by
Mykerinos 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. It is also possible to use this input as a
VITC source (only standard PAL and NTSC rates).
Note: for proper operation this input should be terminated, with a 75ohm resistor, by closing the
jumper JP4 on Mykerinos when connected to the breakout cable.
Mykerinos 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. It is also possible to use this input as a
VITC source (only standard PAL and NTSC rates).
Note: for proper operation this input should be terminated, with a 75ohm resistor, by closing the
jumper JP4 on Mykerinos when connected to the breakout cable.
7.1.2 CVS2IN / WCKIn&Out
This connector can be used, under software control, in 3 modes: Video 2 IN, Wordclock IN or
Wordclock OUT.
When fed with a video signal it may be used as a secondary VITC source or an alternate video input to
be used for the TC window inserter. It is however not possible to use it as the primary external video
reference signal and requires at all times a "house-sync" signal connected to CVS1IN for proper
operation.
Note: when used as a secondary Video Input with the breakout cable, it should be terminated with a
75ohm resistor by closing the jumper JP5 on Mykerinos.
When software configured as a WCK Input it accepts an external Wordclock reference signal between
0.2 and 5 Vp-p.
When software configured as a WCK Output it provides a 5 V TTL-compatible signal with 100-Ohm
output impedance.
Note: whenever used with a Wordclock signal (either Input or Output), do not terminate (JP5 open) on
Mykerinos and on the Video/TC bracket.
Wordclock OUT.
When fed with a video signal it may be used as a secondary VITC source or an alternate video input to
be used for the TC window inserter. It is however not possible to use it as the primary external video
reference signal and requires at all times a "house-sync" signal connected to CVS1IN for proper
operation.
Note: when used as a secondary Video Input with the breakout cable, it should be terminated with a
75ohm resistor by closing the jumper JP5 on Mykerinos.
When software configured as a WCK Input it accepts an external Wordclock reference signal between
0.2 and 5 Vp-p.
When software configured as a WCK Output it provides a 5 V TTL-compatible signal with 100-Ohm
output impedance.
Note: whenever used with a Wordclock signal (either Input or Output), do not terminate (JP5 open) on
Mykerinos and on the Video/TC bracket.