User manual

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 75Ω 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 75Ω 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.