Clock Modes - Synchronization - RME Audio Hammerfall HDSPe AIO User Manual

The DDS dialog requires the HDSPe AIO to be in clock mode Master! The frequency setting
will only be applied to this one specific card!
Changing the sample rate in bigger steps during record/playback often results in a loss of
audio, or brings up warning messages of the audio software. Therefore the desired sample
rate should be set at least coarsely before starting the software.
DDS
Activates all settings of this dialog.
Value
Shows the sample rate as adjusted in
this dialog. The sample rate is defined
by the basic setting (Frequency), the
multiplier, and the position of the acti-
vated fader.
Frequency
Sets a fixed basic sample rate, which
can be modified by multiplier and
fader.
Freq. Multiplier
Changes the basic sample rate into
Single, Double or Quad Speed mode.
Coarse
Fader for coarse modification of the
basic sample rate. Click Active to activate it. Minimum step size 1 Hz.
Fine
Fader for fine modification of the basic sample rate. Click Active to activate it. Minimum step
size 1 Hz.
Notes on the faders
A mouse click within the fader area, above or below the fader know, will move the fader with the
smallest step size up or down. Holding the Ctrl key while clicking will cause the fader to jump to
its center (0).
19.3 Clock Modes - Synchronisation
In the digital world, all devices are either the 'Master' (clock source) or a 'Slave'. If several digi-
tal devices are to be used simultaneously in a system, they not only have to operate with the
same sample frequency but also be synchronous with each other. This is why digital 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'.
The HDSPe AIO's intelligent clock control is very user-friendly, being able to switch between
clock modes automatically. Selecting AutoSync will activate this mode.
User's Guide HDSPe AIO © RME
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