RME Audio Hammerfall HDSPe MADIface, User Manual

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User's Guide HDSPe MADIface
© RME
19.2 Clock Modes - Synchronisation
AutoSync
AutoSync guarantees that normal record and record-while-play will always work correctly If no
valid input signal is found, the card automatically switches to clock mode ‘Master’. In certain
cases however,
AutoSync may cause feedback in the digital carrier, so synchronization breaks
down. To remedy this, switch the clock mode to 'Master'.
Thanks to its AutoSync technique and lightning fast PLL, the HDSPe is not only capable of han-
dling standard frequencies, but also any sample rate between 28 and 200 kHz.
SyncCheck
If several digital devices are to be used simultaneously in a system, they not only have to oper-
ate with the same sample frequency but also be synchronous with each other. This is why digi-
tal systems always need a single device defined as ‘master’, which sends the same clock signal
to all the other (‘slave’) devices.
Remember that a digital system can only have one master! If the HDSPe’s clock mode is
set to Master, all other devices must be set to Slave.
SyncCheck serves as simple check and display tool of the current clock situation. It indicates
whether there is a valid signal (Lock, No Lock), or if there is a valid and synchronous signal
(Sync) at the MADI input.
In practice, SyncCheck provides the user with an easy way of checking whether all digital de-
vices connected to the system are properly configured. With SyncCheck, finally anyone can
master this common source of error, previously one of the most complex issues in the digital
studio world.