© 2007 Merging Technologies
Quintessence User Manual
19
Word Clock
The word clock connection offers a bi-directional signal flow, software controlled directly by
Pyramix/VCube. This is typically used for clocking the Mykerinos audio engine from external AV equipment
such as AD/DA converters, workstations or player/recorders. (Set Audio Synchronization Source to
WordClock
in Settings) Alternatively external equipment can be clocked from the Mykerinos audio engine,
using the same connection (Set Audio Synchronization Source to
Internal
, or other valid clock source in
Settings
)
This innovative I/O brings a more robust word clock signal capable of driving longer 75
Ω
impedance
cables. It has been tested on cable runs of up to 50m length.
The word clock port may be terminated on the MTCHIO board with the JP1 jumper. If this feature is used,
be sure to open the jumper JP5 located on the Mykerinos board to avoid double termination.
Tip:
On multi-board systems, one or more slave Mykerinos cards can be used to send out WordClock
through their own WordClock I/O (which defaults to output) while being synchronized by the TC/Master
Mykerinos through
MTCHIO
’s WordClock I/O. This requires the use of (old), optional TC-Breakout cable(s).
Video Ref In and Video Ref Out
Video Ref In
offers clocking of either or both the Mykerinos audio and TimeCode engines from an external
video reference signal generated by a House Sync Video generator or a video player/recorder. A switch
has been added to easily enable/disable the 75
Ω
termination for the incoming video signal. (Set Audio
Synchronization Source and/or TC Reference to
Video
in Settings)
Video Ref Out
mirrors video reference signals seen at the Video Ref In connector.
Note:
Please ensure that the Mykerinos on-board termination jumper
JP4
is set to
OPEN
when using this connector (This is factory set to open for all systems shipped in the
Quintessence AV Case. Please also refer to the Mykerinos User Manual to locate this
jumper).
LTC Out and LTC In
The
LTC In
connection accepts balanced signals as well as unbalanced signals. The
LTC Out
connection
offers a fully balanced output signal, whose gain can be remote controlled by Pyramix/VCube.
LTC
, stands
for Linear Time Code, it is also commonly known as
SMPTE/EBU
.
Minimum input voltage, in single ended mode, is 0.3Vpp
Maximum input voltage, in single ended mode, is 5.3 Vpp.
Minimum input voltage, in differential mode, 0.2 Vpp.
Maximum output voltage in differential mode is 2 Vpp with a gain adjustable directly in Pyramix in 3dB
steps.
LTC In
will accept LTC TimeCode generated by equipment such as video player/recorders and
workstations. Set Pyramix/VCube to
Chase
in the Transport Panel and set TC Source to
LTC
in Settings
(Pyramix) or in the Transport Panel (VCube)
LTC Out
will generate an LTC TimeCode mirroring the TimeLine’s time ruler for a 3rd party workstation or
video player/recorder to lock to. Set LTC Generator to
On
and adjust signal level in General Settings
Note:
In order for your entire system to be accurately synchronized both the LTC “master”
and the LTC “slave” will need to also share a common clock reference such as Video Ref
and/or WordClock.
Summary of Contents for Quintessence
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